Patent
Atlas literature
Patent
US 9,637,388Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 4 depicts (a) CV for pGr- 72, NGr and NpGr-72 in 5 m V s" scan rate. (b) Linear sweep voltammograms of pGr- 72, NGr, NpGr- 72 and E-TEK recorded in 0.1 M KOH with the scan rate of 10 m V s- 1 and electrode rotation rate of 1600 rpm. 10
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
Figure 6 depicts (a) Single cell polarization data by using NpGr- 72 and NGr (b) Pt/C (E-TEK) as the cathode catalysts (loading: 2.5 mg cm- 2) and FumaTech FAA as the anion exchange membrane. 40 wt.% Pt/C (E-TEK) (loading: 0.8 mg cm- 2) was 15 used as the anode cata l yst. The operating temperature …
Figure 7 depict Hydrogen adsorption desorption isotherms of pGr- 48 and pGr- 72 at 1 atm pressure and 77 K and (b) weight percentage of hydrogen uptake of pGr- 48 20 and pGr- 72 at 1 atm pressure and 77 K.
Figure 8 EDAX spectra with elemental quantification of (a) NpGr- 72 and (b) NGr. It depicts the higher amount of the doped nitrogen and its chemical environment of NpGr- 72 has been identified by energy dispersive X-ray analysis (EDAX).
Figure 9 Deconvoluted N 1 s spectra of NpGr- 72 and NGr. The various nitrogen 25 moieties as designated for the samples are as follows: (a) NpGr- 72: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic), N₄ (Quaternary) and N₅ (Pyridinic N+ 0 -); (b) NGr: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An in-situ process for simultaneous synthesis of nanoporous graphene (pGr) and photo luminescent graphene quantum dots (GQDs) with no wastage of carbonaceous material comprising; i. dispersing graphene with 25-35 % hydrogen peroxide (H₂₀₂) at room temperature ranging between 25-35 " C followed by increasing the temperature to 60 to 70 " C for 24 to 72 hrs to obtain a mixture of porous graphene (pGr) and graphene quantum dots (GQDs); ii. filtering the resulting mixture to obtain the solution of GQDs as filtrate and residue of pGr; iii. drying the residue as pGr as obtained in step (ii) at a temperature in the range of 40" C-60 " C for 1-3 h; iv. dialysing the filtrate as obtained in step (ii) in dialysis bag for 1- 3 days at 27 to 30" C to obtain solution of GQD; v. etie>4yr nitrogen doping of the porous graphene as obtained in step (iii) to obtain nitrogen doped porous graphene.
The process according to claim 1, wherein the average size of graphene quantum dots as obtained in step (iv) in a single layer is 3-5nm.
The process according to claim 1, wherein the BET surface area of pGr as obtained in step (111) is in the range of 204 to 240 m2 g -1.
T he [[A]] process according to claim 1, wherein the nitrogen doping of the porous graphene surface (pGr)was carried out by, mixing of ethanolic solution of porous graphene (pGr) as obtained in step (iii) with 1, 10 Phenanthroline mixture at 27 to 30 " C for a period ranging between 20 -24 hrs followed by evaporating the solvent by 2of7 Application No. 14/893,658 Amendment "A" dated Reply to Office Action dated thermal evaporation at temperature ranging between 50 to 60 " C for a period ranging between 10-12 hrs to obtain the composite material subsequently heating at temperature ranging between 800 to 900 " C for a period ranging between 1-3 hrs in a furnace saturated with inert atmosphere and cooling, washing to obtain nitrogen doped porous graphene.
Materials described outside the worked examples.
graphene
graphene quantum dots (GQDs)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
average size of GQDs (single layer) | 3–5 | graphene quantum dots (GQDs) |
BET surface area of pGr | 204–240 |
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Patent
Atlas literature
Patent
US 9,637,388Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 4 depicts (a) CV for pGr- 72, NGr and NpGr-72 in 5 m V s" scan rate. (b) Linear sweep voltammograms of pGr- 72, NGr, NpGr- 72 and E-TEK recorded in 0.1 M KOH with the scan rate of 10 m V s- 1 and electrode rotation rate of 1600 rpm. 10
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
Figure 6 depicts (a) Single cell polarization data by using NpGr- 72 and NGr (b) Pt/C (E-TEK) as the cathode catalysts (loading: 2.5 mg cm- 2) and FumaTech FAA as the anion exchange membrane. 40 wt.% Pt/C (E-TEK) (loading: 0.8 mg cm- 2) was 15 used as the anode cata l yst. The operating temperature …
Figure 7 depict Hydrogen adsorption desorption isotherms of pGr- 48 and pGr- 72 at 1 atm pressure and 77 K and (b) weight percentage of hydrogen uptake of pGr- 48 20 and pGr- 72 at 1 atm pressure and 77 K.
Figure 8 EDAX spectra with elemental quantification of (a) NpGr- 72 and (b) NGr. It depicts the higher amount of the doped nitrogen and its chemical environment of NpGr- 72 has been identified by energy dispersive X-ray analysis (EDAX).
Figure 9 Deconvoluted N 1 s spectra of NpGr- 72 and NGr. The various nitrogen 25 moieties as designated for the samples are as follows: (a) NpGr- 72: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic), N₄ (Quaternary) and N₅ (Pyridinic N+ 0 -); (b) NGr: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An in-situ process for simultaneous synthesis of nanoporous graphene (pGr) and photo luminescent graphene quantum dots (GQDs) with no wastage of carbonaceous material comprising; i. dispersing graphene with 25-35 % hydrogen peroxide (H₂₀₂) at room temperature ranging between 25-35 " C followed by increasing the temperature to 60 to 70 " C for 24 to 72 hrs to obtain a mixture of porous graphene (pGr) and graphene quantum dots (GQDs); ii. filtering the resulting mixture to obtain the solution of GQDs as filtrate and residue of pGr; iii. drying the residue as pGr as obtained in step (ii) at a temperature in the range of 40" C-60 " C for 1-3 h; iv. dialysing the filtrate as obtained in step (ii) in dialysis bag for 1- 3 days at 27 to 30" C to obtain solution of GQD; v. etie>4yr nitrogen doping of the porous graphene as obtained in step (iii) to obtain nitrogen doped porous graphene.
The process according to claim 1, wherein the average size of graphene quantum dots as obtained in step (iv) in a single layer is 3-5nm.
The process according to claim 1, wherein the BET surface area of pGr as obtained in step (111) is in the range of 204 to 240 m2 g -1.
T he [[A]] process according to claim 1, wherein the nitrogen doping of the porous graphene surface (pGr)was carried out by, mixing of ethanolic solution of porous graphene (pGr) as obtained in step (iii) with 1, 10 Phenanthroline mixture at 27 to 30 " C for a period ranging between 20 -24 hrs followed by evaporating the solvent by 2of7 Application No. 14/893,658 Amendment "A" dated Reply to Office Action dated thermal evaporation at temperature ranging between 50 to 60 " C for a period ranging between 10-12 hrs to obtain the composite material subsequently heating at temperature ranging between 800 to 900 " C for a period ranging between 1-3 hrs in a furnace saturated with inert atmosphere and cooling, washing to obtain nitrogen doped porous graphene.
Materials described outside the worked examples.
graphene
graphene quantum dots (GQDs)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
average size of GQDs (single layer) | 3–5 | graphene quantum dots (GQDs) |
BET surface area of pGr | 204–240 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,637,388Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 4 depicts (a) CV for pGr- 72, NGr and NpGr-72 in 5 m V s" scan rate. (b) Linear sweep voltammograms of pGr- 72, NGr, NpGr- 72 and E-TEK recorded in 0.1 M KOH with the scan rate of 10 m V s- 1 and electrode rotation rate of 1600 rpm. 10
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
Figure 6 depicts (a) Single cell polarization data by using NpGr- 72 and NGr (b) Pt/C (E-TEK) as the cathode catalysts (loading: 2.5 mg cm- 2) and FumaTech FAA as the anion exchange membrane. 40 wt.% Pt/C (E-TEK) (loading: 0.8 mg cm- 2) was 15 used as the anode cata l yst. The operating temperature …
Figure 7 depict Hydrogen adsorption desorption isotherms of pGr- 48 and pGr- 72 at 1 atm pressure and 77 K and (b) weight percentage of hydrogen uptake of pGr- 48 20 and pGr- 72 at 1 atm pressure and 77 K.
Figure 8 EDAX spectra with elemental quantification of (a) NpGr- 72 and (b) NGr. It depicts the higher amount of the doped nitrogen and its chemical environment of NpGr- 72 has been identified by energy dispersive X-ray analysis (EDAX).
Figure 9 Deconvoluted N 1 s spectra of NpGr- 72 and NGr. The various nitrogen 25 moieties as designated for the samples are as follows: (a) NpGr- 72: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic), N₄ (Quaternary) and N₅ (Pyridinic N+ 0 -); (b) NGr: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An in-situ process for simultaneous synthesis of nanoporous graphene (pGr) and photo luminescent graphene quantum dots (GQDs) with no wastage of carbonaceous material comprising; i. dispersing graphene with 25-35 % hydrogen peroxide (H₂₀₂) at room temperature ranging between 25-35 " C followed by increasing the temperature to 60 to 70 " C for 24 to 72 hrs to obtain a mixture of porous graphene (pGr) and graphene quantum dots (GQDs); ii. filtering the resulting mixture to obtain the solution of GQDs as filtrate and residue of pGr; iii. drying the residue as pGr as obtained in step (ii) at a temperature in the range of 40" C-60 " C for 1-3 h; iv. dialysing the filtrate as obtained in step (ii) in dialysis bag for 1- 3 days at 27 to 30" C to obtain solution of GQD; v. etie>4yr nitrogen doping of the porous graphene as obtained in step (iii) to obtain nitrogen doped porous graphene.
The process according to claim 1, wherein the average size of graphene quantum dots as obtained in step (iv) in a single layer is 3-5nm.
The process according to claim 1, wherein the BET surface area of pGr as obtained in step (111) is in the range of 204 to 240 m2 g -1.
T he [[A]] process according to claim 1, wherein the nitrogen doping of the porous graphene surface (pGr)was carried out by, mixing of ethanolic solution of porous graphene (pGr) as obtained in step (iii) with 1, 10 Phenanthroline mixture at 27 to 30 " C for a period ranging between 20 -24 hrs followed by evaporating the solvent by 2of7 Application No. 14/893,658 Amendment "A" dated Reply to Office Action dated thermal evaporation at temperature ranging between 50 to 60 " C for a period ranging between 10-12 hrs to obtain the composite material subsequently heating at temperature ranging between 800 to 900 " C for a period ranging between 1-3 hrs in a furnace saturated with inert atmosphere and cooling, washing to obtain nitrogen doped porous graphene.
Materials described outside the worked examples.
graphene
graphene quantum dots (GQDs)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
average size of GQDs (single layer) | 3–5 | graphene quantum dots (GQDs) |
BET surface area of pGr | 204–240 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,637,388Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 4 depicts (a) CV for pGr- 72, NGr and NpGr-72 in 5 m V s" scan rate. (b) Linear sweep voltammograms of pGr- 72, NGr, NpGr- 72 and E-TEK recorded in 0.1 M KOH with the scan rate of 10 m V s- 1 and electrode rotation rate of 1600 rpm. 10
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
Figure 6 depicts (a) Single cell polarization data by using NpGr- 72 and NGr (b) Pt/C (E-TEK) as the cathode catalysts (loading: 2.5 mg cm- 2) and FumaTech FAA as the anion exchange membrane. 40 wt.% Pt/C (E-TEK) (loading: 0.8 mg cm- 2) was 15 used as the anode cata l yst. The operating temperature …
Figure 7 depict Hydrogen adsorption desorption isotherms of pGr- 48 and pGr- 72 at 1 atm pressure and 77 K and (b) weight percentage of hydrogen uptake of pGr- 48 20 and pGr- 72 at 1 atm pressure and 77 K.
Figure 8 EDAX spectra with elemental quantification of (a) NpGr- 72 and (b) NGr. It depicts the higher amount of the doped nitrogen and its chemical environment of NpGr- 72 has been identified by energy dispersive X-ray analysis (EDAX).
Figure 9 Deconvoluted N 1 s spectra of NpGr- 72 and NGr. The various nitrogen 25 moieties as designated for the samples are as follows: (a) NpGr- 72: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic), N₄ (Quaternary) and N₅ (Pyridinic N+ 0 -); (b) NGr: N 1 (Pyridinic), N₂ (Pyrrolic), N₃ (Graphitic) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An in-situ process for simultaneous synthesis of nanoporous graphene (pGr) and photo luminescent graphene quantum dots (GQDs) with no wastage of carbonaceous material comprising; i. dispersing graphene with 25-35 % hydrogen peroxide (H₂₀₂) at room temperature ranging between 25-35 " C followed by increasing the temperature to 60 to 70 " C for 24 to 72 hrs to obtain a mixture of porous graphene (pGr) and graphene quantum dots (GQDs); ii. filtering the resulting mixture to obtain the solution of GQDs as filtrate and residue of pGr; iii. drying the residue as pGr as obtained in step (ii) at a temperature in the range of 40" C-60 " C for 1-3 h; iv. dialysing the filtrate as obtained in step (ii) in dialysis bag for 1- 3 days at 27 to 30" C to obtain solution of GQD; v. etie>4yr nitrogen doping of the porous graphene as obtained in step (iii) to obtain nitrogen doped porous graphene.
The process according to claim 1, wherein the average size of graphene quantum dots as obtained in step (iv) in a single layer is 3-5nm.
The process according to claim 1, wherein the BET surface area of pGr as obtained in step (111) is in the range of 204 to 240 m2 g -1.
T he [[A]] process according to claim 1, wherein the nitrogen doping of the porous graphene surface (pGr)was carried out by, mixing of ethanolic solution of porous graphene (pGr) as obtained in step (iii) with 1, 10 Phenanthroline mixture at 27 to 30 " C for a period ranging between 20 -24 hrs followed by evaporating the solvent by 2of7 Application No. 14/893,658 Amendment "A" dated Reply to Office Action dated thermal evaporation at temperature ranging between 50 to 60 " C for a period ranging between 10-12 hrs to obtain the composite material subsequently heating at temperature ranging between 800 to 900 " C for a period ranging between 1-3 hrs in a furnace saturated with inert atmosphere and cooling, washing to obtain nitrogen doped porous graphene.
Materials described outside the worked examples.
graphene
graphene quantum dots (GQDs)
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 1 depicts (a-b) HRTEM images of GQD- 72 in different magnifications. Inset of (a) is the diffraction pattern of GQD- 72 which represents the mono crysat l linity of the material. Inset of (b) is the higher magnification image of GQD- 72, giving 25 the corresponding lattice fringes possessing d …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
average size of GQDs (single layer) | 3–5 | graphene quantum dots (GQDs) |
BET surface area of pGr | 204–240 |
Related documents with shared materials, methods, properties, or citations.
porous graphene (pGr)
nitrogen doped porous graphene
1,10-Phenanthroline
C₁₂H₈N₂
hydrogen peroxide
H₂O₂
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK) The stability of the non-Pt catalysts under electrochemical environments is an important assessment criterion of their suitability in real fuel testing conditions. Hence, in order to compare the sta
hough the electrode catalyst loading in this case was 5 mg cm 2 compared to 2.5 mg cm 2 in the present case.[[C. V. Rao, Y. 30 I shikawa, J.
Thickness | 5–9 nm | — |
Thickness | 340–460 nm | — |
Duration | 24–72 hours | — |
Thickness | 3–5 nm | — |
Thickness | 0.7–3 nm | — |
Thickness | 1584–1589 cm | — |
Thickness | 1337–1346 cm | — |
— | ≤ 1.5 eV | — |
porous graphene (pGr)
nitrogen doped porous graphene
1,10-Phenanthroline
C₁₂H₈N₂
hydrogen peroxide
H₂O₂
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK) The stability of the non-Pt catalysts under electrochemical environments is an important assessment criterion of their suitability in real fuel testing conditions. Hence, in order to compare the sta
hough the electrode catalyst loading in this case was 5 mg cm 2 compared to 2.5 mg cm 2 in the present case.[[C. V. Rao, Y. 30 I shikawa, J.
Thickness | 5–9 nm | — |
Thickness | 340–460 nm | — |
Duration | 24–72 hours | — |
Thickness | 3–5 nm | — |
Thickness | 0.7–3 nm | — |
Thickness | 1584–1589 cm | — |
Thickness | 1337–1346 cm | — |
— | ≤ 1.5 eV | — |
porous graphene (pGr)
nitrogen doped porous graphene
1,10-Phenanthroline
C₁₂H₈N₂
hydrogen peroxide
H₂O₂
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK) The stability of the non-Pt catalysts under electrochemical environments is an important assessment criterion of their suitability in real fuel testing conditions. Hence, in order to compare the sta
hough the electrode catalyst loading in this case was 5 mg cm 2 compared to 2.5 mg cm 2 in the present case.[[C. V. Rao, Y. 30 I shikawa, J.
Thickness | 5–9 nm | — |
Thickness | 340–460 nm | — |
Duration | 24–72 hours | — |
Thickness | 3–5 nm | — |
Thickness | 0.7–3 nm | — |
Thickness | 1584–1589 cm | — |
Thickness | 1337–1346 cm | — |
— | ≤ 1.5 eV | — |
porous graphene (pGr)
nitrogen doped porous graphene
1,10-Phenanthroline
C₁₂H₈N₂
hydrogen peroxide
H₂O₂
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 2 depicts (a) UV-Vis spectra of GQD- 72. (b) Photoluminescent excitation (PLE) spectra of GQD- 72. (c) Photoluminescent spectra of GQD- 72 in water. (d) Comparison of PL spectra of different GQDs (GQD- 24, 48 and 72) at the excitation wavelength of 340 nm. 35
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 3 depicts XRD patterns of the prepared samples (b) Raman spectra of Gr, pGr- 72 and GQD- 72 4 WO 2014/188454 PCT/I N₂₀₁₄/000354 5
Figure 5 depicts accelerated durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK).
durability test for (a) NpGr- 72 and (b) 20 wt % Pt/C (E-TEK) The stability of the non-Pt catalysts under electrochemical environments is an important assessment criterion of their suitability in real fuel testing conditions. Hence, in order to compare the sta
hough the electrode catalyst loading in this case was 5 mg cm 2 compared to 2.5 mg cm 2 in the present case.[[C. V. Rao, Y. 30 I shikawa, J.
Thickness | 5–9 nm | — |
Thickness | 340–460 nm | — |
Duration | 24–72 hours | — |
Thickness | 3–5 nm | — |
Thickness | 0.7–3 nm | — |
Thickness | 1584–1589 cm | — |
Thickness | 1337–1346 cm | — |
— | ≤ 1.5 eV | — |
