Patent
US 10,539,875KETYL RADICAL INDUCED PHOTOREDUCTION OF GRAPHENE OXIDE; GRAFTING OF METAL NANOPARTICLES ON GRAPHENE BY PHOTOREDUCTION
Joey D. Mangadlao
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,539,875Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates the formation of reduced graphene oxide (rGO) (b) and metallic nanoparticle hybrids (c) by photoreduction of GO (a) with ketyl radical …
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 4 illustrates photo-patterning of GO. (a) Water contact angle of exposed and non- exposed (covered with aluminum foil) region of GO+ l -2959 film. (b) …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 8 illustrates the water contact angle and photo-patterned polystyrene nanocomposite films with and without silver precursor; [0022]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 10 illustrates a proposed mechanism of the photoreduction of GO using 1 -2959; [0024]
FIG. 11 illustrates a selected area electron diffraction (S A ED) pattern of (a) rGO-AuNP, (b) rGO-AgNP and (c) rGO-PdNP; [0025]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
FIG. 20 illustrates an optical image and water contact angles of nanocomposites containing (a) PS, 1-2959 and GO; and (b) PS, 1 -2959, GO and Ag +.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for photoreducing graphene oxide, comprising the steps of: obtaining a composition comprising graphene oxide and a photoinitiator; irradiating the composition with UV radiation thereby reducing the graphene oxide. Original
The method according to claim 1, wherein the UV radiation intensity ranges from 10-100 mW/cm 2 for 10-60 m in at ambient temperature and pressure. Original
The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solution. Original
5. The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solid-state. Original
The method according to claim 1, wherein the UV irradiation is applied to the graphene oxide and photoinitiator in the presence of a polymer. Original
The m ethod according to claim 1, wherein the composition further includes a metal salt that co-reduces to a corresponding metal nanopartic l e that is grafted on the surface of the reduced graphene oxide. Original
A composition produced from the method accordin g to claim 1. Withdrawn
(O ri gina l) The method according to clai m 1, further including the step o f providing a mask prior to a p plication of the UV radiation such that a pattern i s produced. Original
(W ithdrawn) A device comp rising the photore duc ed composition according tO caim 1. Withdrawn
A composition produced b y the method according to clai m 1, wherein the photoinitiator comprises one o r more of a b enz yl ketal, a benz o in ether, a dialkoxy a cetophenone, a hydroxyal k yl phenone, a n aminoakylp h enone, a acy l phosphine oxide, a benzophenone/ami n e, a thioxanthone/amine, a n d a titanocen e. Withdrawn
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
A solution of HMP (20 mM) and GO (1 mg/mL) in THF is placed in a glass vial with a stir-bar and photo-irradiated using a Honle Bluepoint 4 Ecocure irradiation set-up with a 320-390 nm filter at 200-500 mW/cm2 power density. After reaction, solution is centrifuged and re-dispersed in THF for 6 cycles to purify the reduced graphene oxide product.
6 materials1 process step
300 µL of 10 mg/mL GO solution added to 3 mL solution of 20 mM HMP and 10 mM metal precursors (AgCF₃SO3, HAuCl4, (C₆H₅CN)2PdCl₂). Irradiated for 10 min using same irradiation parameters as solution photoreduction. Same purification procedure performed.
2 materials1 process step
The mixture of graphene oxide and photoinitiator is cast or dispersed onto a clean glass slide and thereafter UV radiation is applied for solid-state photoreduction.
3 materials1 process step
Equal volumes of 50 mg/mL polystyrene (250 kDa), 0.5 mg/mL GO and 20 mM HMP are mixed and photo-irradiated to produce a polymer-graphene nanocomposite.
Materials described outside the worked examples.
photoinitiator
polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 320–390 nm | — |
Duration | 10–30 minutes |
Related documents with shared materials, methods, properties, or citations.
METAL INTERCALATION IN LAYERED MOS2 DEVICES FOR ENHANCED PHOTODETECTION
STRUCTURE INCLUDING MOLECULAR MONOLAYER AND GRAPHENE ELECTRODE, FLEXIBLE ELECTRONIC DEVICE, AND METHOD OF PRODUCING THE SAME
Patent
Atlas literature
Patent
US 10,539,875Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates the formation of reduced graphene oxide (rGO) (b) and metallic nanoparticle hybrids (c) by photoreduction of GO (a) with ketyl radical …
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 4 illustrates photo-patterning of GO. (a) Water contact angle of exposed and non- exposed (covered with aluminum foil) region of GO+ l -2959 film. (b) …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 8 illustrates the water contact angle and photo-patterned polystyrene nanocomposite films with and without silver precursor; [0022]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 10 illustrates a proposed mechanism of the photoreduction of GO using 1 -2959; [0024]
FIG. 11 illustrates a selected area electron diffraction (S A ED) pattern of (a) rGO-AuNP, (b) rGO-AgNP and (c) rGO-PdNP; [0025]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
FIG. 20 illustrates an optical image and water contact angles of nanocomposites containing (a) PS, 1-2959 and GO; and (b) PS, 1 -2959, GO and Ag +.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for photoreducing graphene oxide, comprising the steps of: obtaining a composition comprising graphene oxide and a photoinitiator; irradiating the composition with UV radiation thereby reducing the graphene oxide. Original
The method according to claim 1, wherein the UV radiation intensity ranges from 10-100 mW/cm 2 for 10-60 m in at ambient temperature and pressure. Original
The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solution. Original
5. The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solid-state. Original
The method according to claim 1, wherein the UV irradiation is applied to the graphene oxide and photoinitiator in the presence of a polymer. Original
The m ethod according to claim 1, wherein the composition further includes a metal salt that co-reduces to a corresponding metal nanopartic l e that is grafted on the surface of the reduced graphene oxide. Original
A composition produced from the method accordin g to claim 1. Withdrawn
(O ri gina l) The method according to clai m 1, further including the step o f providing a mask prior to a p plication of the UV radiation such that a pattern i s produced. Original
(W ithdrawn) A device comp rising the photore duc ed composition according tO caim 1. Withdrawn
A composition produced b y the method according to clai m 1, wherein the photoinitiator comprises one o r more of a b enz yl ketal, a benz o in ether, a dialkoxy a cetophenone, a hydroxyal k yl phenone, a n aminoakylp h enone, a acy l phosphine oxide, a benzophenone/ami n e, a thioxanthone/amine, a n d a titanocen e. Withdrawn
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
A solution of HMP (20 mM) and GO (1 mg/mL) in THF is placed in a glass vial with a stir-bar and photo-irradiated using a Honle Bluepoint 4 Ecocure irradiation set-up with a 320-390 nm filter at 200-500 mW/cm2 power density. After reaction, solution is centrifuged and re-dispersed in THF for 6 cycles to purify the reduced graphene oxide product.
6 materials1 process step
300 µL of 10 mg/mL GO solution added to 3 mL solution of 20 mM HMP and 10 mM metal precursors (AgCF₃SO3, HAuCl4, (C₆H₅CN)2PdCl₂). Irradiated for 10 min using same irradiation parameters as solution photoreduction. Same purification procedure performed.
2 materials1 process step
The mixture of graphene oxide and photoinitiator is cast or dispersed onto a clean glass slide and thereafter UV radiation is applied for solid-state photoreduction.
3 materials1 process step
Equal volumes of 50 mg/mL polystyrene (250 kDa), 0.5 mg/mL GO and 20 mM HMP are mixed and photo-irradiated to produce a polymer-graphene nanocomposite.
Materials described outside the worked examples.
photoinitiator
polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 320–390 nm | — |
Duration | 10–30 minutes |
Related documents with shared materials, methods, properties, or citations.
METAL INTERCALATION IN LAYERED MOS2 DEVICES FOR ENHANCED PHOTODETECTION
STRUCTURE INCLUDING MOLECULAR MONOLAYER AND GRAPHENE ELECTRODE, FLEXIBLE ELECTRONIC DEVICE, AND METHOD OF PRODUCING THE SAME
Patent
Atlas literature
Patent
US 10,539,875Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates the formation of reduced graphene oxide (rGO) (b) and metallic nanoparticle hybrids (c) by photoreduction of GO (a) with ketyl radical …
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 4 illustrates photo-patterning of GO. (a) Water contact angle of exposed and non- exposed (covered with aluminum foil) region of GO+ l -2959 film. (b) …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 8 illustrates the water contact angle and photo-patterned polystyrene nanocomposite films with and without silver precursor; [0022]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 10 illustrates a proposed mechanism of the photoreduction of GO using 1 -2959; [0024]
FIG. 11 illustrates a selected area electron diffraction (S A ED) pattern of (a) rGO-AuNP, (b) rGO-AgNP and (c) rGO-PdNP; [0025]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
FIG. 20 illustrates an optical image and water contact angles of nanocomposites containing (a) PS, 1-2959 and GO; and (b) PS, 1 -2959, GO and Ag +.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for photoreducing graphene oxide, comprising the steps of: obtaining a composition comprising graphene oxide and a photoinitiator; irradiating the composition with UV radiation thereby reducing the graphene oxide. Original
The method according to claim 1, wherein the UV radiation intensity ranges from 10-100 mW/cm 2 for 10-60 m in at ambient temperature and pressure. Original
The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solution. Original
5. The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solid-state. Original
The method according to claim 1, wherein the UV irradiation is applied to the graphene oxide and photoinitiator in the presence of a polymer. Original
The m ethod according to claim 1, wherein the composition further includes a metal salt that co-reduces to a corresponding metal nanopartic l e that is grafted on the surface of the reduced graphene oxide. Original
A composition produced from the method accordin g to claim 1. Withdrawn
(O ri gina l) The method according to clai m 1, further including the step o f providing a mask prior to a p plication of the UV radiation such that a pattern i s produced. Original
(W ithdrawn) A device comp rising the photore duc ed composition according tO caim 1. Withdrawn
A composition produced b y the method according to clai m 1, wherein the photoinitiator comprises one o r more of a b enz yl ketal, a benz o in ether, a dialkoxy a cetophenone, a hydroxyal k yl phenone, a n aminoakylp h enone, a acy l phosphine oxide, a benzophenone/ami n e, a thioxanthone/amine, a n d a titanocen e. Withdrawn
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
A solution of HMP (20 mM) and GO (1 mg/mL) in THF is placed in a glass vial with a stir-bar and photo-irradiated using a Honle Bluepoint 4 Ecocure irradiation set-up with a 320-390 nm filter at 200-500 mW/cm2 power density. After reaction, solution is centrifuged and re-dispersed in THF for 6 cycles to purify the reduced graphene oxide product.
6 materials1 process step
300 µL of 10 mg/mL GO solution added to 3 mL solution of 20 mM HMP and 10 mM metal precursors (AgCF₃SO3, HAuCl4, (C₆H₅CN)2PdCl₂). Irradiated for 10 min using same irradiation parameters as solution photoreduction. Same purification procedure performed.
2 materials1 process step
The mixture of graphene oxide and photoinitiator is cast or dispersed onto a clean glass slide and thereafter UV radiation is applied for solid-state photoreduction.
3 materials1 process step
Equal volumes of 50 mg/mL polystyrene (250 kDa), 0.5 mg/mL GO and 20 mM HMP are mixed and photo-irradiated to produce a polymer-graphene nanocomposite.
Materials described outside the worked examples.
photoinitiator
polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 320–390 nm | — |
Duration | 10–30 minutes |
Related documents with shared materials, methods, properties, or citations.
METAL INTERCALATION IN LAYERED MOS2 DEVICES FOR ENHANCED PHOTODETECTION
STRUCTURE INCLUDING MOLECULAR MONOLAYER AND GRAPHENE ELECTRODE, FLEXIBLE ELECTRONIC DEVICE, AND METHOD OF PRODUCING THE SAME
Patent
Atlas literature
Patent
US 10,539,875Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates the formation of reduced graphene oxide (rGO) (b) and metallic nanoparticle hybrids (c) by photoreduction of GO (a) with ketyl radical …
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 4 illustrates photo-patterning of GO. (a) Water contact angle of exposed and non- exposed (covered with aluminum foil) region of GO+ l -2959 film. (b) …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 8 illustrates the water contact angle and photo-patterned polystyrene nanocomposite films with and without silver precursor; [0022]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 10 illustrates a proposed mechanism of the photoreduction of GO using 1 -2959; [0024]
FIG. 11 illustrates a selected area electron diffraction (S A ED) pattern of (a) rGO-AuNP, (b) rGO-AgNP and (c) rGO-PdNP; [0025]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
FIG. 20 illustrates an optical image and water contact angles of nanocomposites containing (a) PS, 1-2959 and GO; and (b) PS, 1 -2959, GO and Ag +.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for photoreducing graphene oxide, comprising the steps of: obtaining a composition comprising graphene oxide and a photoinitiator; irradiating the composition with UV radiation thereby reducing the graphene oxide. Original
The method according to claim 1, wherein the UV radiation intensity ranges from 10-100 mW/cm 2 for 10-60 m in at ambient temperature and pressure. Original
The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solution. Original
5. The method according to claim 1, wherein the UV radiation is applied to the graphene oxide and photoinitiator in solid-state. Original
The method according to claim 1, wherein the UV irradiation is applied to the graphene oxide and photoinitiator in the presence of a polymer. Original
The m ethod according to claim 1, wherein the composition further includes a metal salt that co-reduces to a corresponding metal nanopartic l e that is grafted on the surface of the reduced graphene oxide. Original
A composition produced from the method accordin g to claim 1. Withdrawn
(O ri gina l) The method according to clai m 1, further including the step o f providing a mask prior to a p plication of the UV radiation such that a pattern i s produced. Original
(W ithdrawn) A device comp rising the photore duc ed composition according tO caim 1. Withdrawn
A composition produced b y the method according to clai m 1, wherein the photoinitiator comprises one o r more of a b enz yl ketal, a benz o in ether, a dialkoxy a cetophenone, a hydroxyal k yl phenone, a n aminoakylp h enone, a acy l phosphine oxide, a benzophenone/ami n e, a thioxanthone/amine, a n d a titanocen e. Withdrawn
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
A solution of HMP (20 mM) and GO (1 mg/mL) in THF is placed in a glass vial with a stir-bar and photo-irradiated using a Honle Bluepoint 4 Ecocure irradiation set-up with a 320-390 nm filter at 200-500 mW/cm2 power density. After reaction, solution is centrifuged and re-dispersed in THF for 6 cycles to purify the reduced graphene oxide product.
6 materials1 process step
300 µL of 10 mg/mL GO solution added to 3 mL solution of 20 mM HMP and 10 mM metal precursors (AgCF₃SO3, HAuCl4, (C₆H₅CN)2PdCl₂). Irradiated for 10 min using same irradiation parameters as solution photoreduction. Same purification procedure performed.
2 materials1 process step
The mixture of graphene oxide and photoinitiator is cast or dispersed onto a clean glass slide and thereafter UV radiation is applied for solid-state photoreduction.
3 materials1 process step
Equal volumes of 50 mg/mL polystyrene (250 kDa), 0.5 mg/mL GO and 20 mM HMP are mixed and photo-irradiated to produce a polymer-graphene nanocomposite.
Materials described outside the worked examples.
photoinitiator
polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 illustrates the photographs of GO solutions irradiated with (a) and without (b) 1 -2959 at different time intervals. UV-Vis spectra of c) GO and d) GO …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 320–390 nm | — |
Duration | 10–30 minutes |
Related documents with shared materials, methods, properties, or citations.
METAL INTERCALATION IN LAYERED MOS2 DEVICES FOR ENHANCED PHOTODETECTION
STRUCTURE INCLUDING MOLECULAR MONOLAYER AND GRAPHENE ELECTRODE, FLEXIBLE ELECTRONIC DEVICE, AND METHOD OF PRODUCING THE SAME
thermoplastic polyurethane
poly[oligo(ethylene glycol) methyl methacrylate]
PEGMEMA
cellulose nanomaterial
metal salt
photoinitiator classes (benzyl ketal, benzoin ether, dialkoxy acetophenone, hydroxyalkyl phenone, aminoalkylphenone, acylphosphine oxide, benzophenone/amine, thioxanthone/amine, titanocene)
tetrahydrofuran
THF
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
| — |
— | 282–286 eV | — |
— | 286–290 eV | — |
Thickness | 300–900 nm | — |
Thickness | 0–30 nm | — |
— | 0–1100 eV | — |
thermoplastic polyurethane
poly[oligo(ethylene glycol) methyl methacrylate]
PEGMEMA
cellulose nanomaterial
metal salt
photoinitiator classes (benzyl ketal, benzoin ether, dialkoxy acetophenone, hydroxyalkyl phenone, aminoalkylphenone, acylphosphine oxide, benzophenone/amine, thioxanthone/amine, titanocene)
tetrahydrofuran
THF
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
| — |
— | 282–286 eV | — |
— | 286–290 eV | — |
Thickness | 300–900 nm | — |
Thickness | 0–30 nm | — |
— | 0–1100 eV | — |
thermoplastic polyurethane
poly[oligo(ethylene glycol) methyl methacrylate]
PEGMEMA
cellulose nanomaterial
metal salt
photoinitiator classes (benzyl ketal, benzoin ether, dialkoxy acetophenone, hydroxyalkyl phenone, aminoalkylphenone, acylphosphine oxide, benzophenone/amine, thioxanthone/amine, titanocene)
tetrahydrofuran
THF
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
| — |
— | 282–286 eV | — |
— | 286–290 eV | — |
Thickness | 300–900 nm | — |
Thickness | 0–30 nm | — |
— | 0–1100 eV | — |
thermoplastic polyurethane
poly[oligo(ethylene glycol) methyl methacrylate]
PEGMEMA
cellulose nanomaterial
metal salt
photoinitiator classes (benzyl ketal, benzoin ether, dialkoxy acetophenone, hydroxyalkyl phenone, aminoalkylphenone, acylphosphine oxide, benzophenone/amine, thioxanthone/amine, titanocene)
tetrahydrofuran
THF
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 3 illustrates (a) Raman and (b) XPS spectra of GO (black line), GO+UV (red line) and GO+ l -2959+UV (blue line). (c) WAXS of GO and (d) GO+ 1 -2959+UV; …
FIG. 5 illustrates the photograph and UV-Vis spectra of 0.5 mg/mL solution of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP in M e OH; [0019]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 6 illustrates the (a) Raman and high-resolution XPS spectra of (a) rGO- AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0020]
FIG. 7 illustrates STEM image, particle distribution, and electron diffraction patterns of (a) rGO-AgNP, (b) rGO-AuNP and (c) rGO-PdNP; [0021]
FIG. 9 illustrates a XPS survey scan of GO, GO+UV and GO+ l -2959+UV; [0023]
FIG. 12 illustrates STEM images and EDX spectra of (a) rGO-AgNP, (b) rGO- AuNP and (c) rGO-PdNP recorded across the selected areas (yellow-pt 1 and blue-pt 2 …
FIG. 13 illustrates TEM-EDX mapping of rGO-AuNP. (a) Original STEM image; (b) Au L a line map; (c) image overlay and (d) overall EDX spectrum; [0027]
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 14 illustrates catalytic performance of rGO-AgNP on the degradation of (a) 4- Nitrophenol, (b) Rose Bengal and (c) Methyl Orange as monitored by UV-Vis …
FIG. 15 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of 4-Nitrophenol; [0029]
FIG. 16 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Rose Bengal; [0030]
FIG. 17 illustrates catalytic performance of (a) rGO-AgNP, (b) rGO-AuNP and rGO-PdNP in the degradation of Methyl Orange; [0031]
FIG. 18 illustrates UV-Vis absorbance of (a) 4-Nitrophenol and 4- nitrophenolate, (b) Rose Bengal and (c) Methyl Orange with NaBH 4 alone (w/o catalyst); [0032]
FIG. 19 is a summary of the catalytic performance of graphene metal nanoparticle hybrids in the degradation of 4-NP, RB and MO and (b) reusability of the …
| — |
— | 282–286 eV | — |
— | 286–290 eV | — |
Thickness | 300–900 nm | — |
Thickness | 0–30 nm | — |
— | 0–1100 eV | — |