Synchronous construction of CoS2 in-situ loading and S doping for g-C3N4: Enhanced photocatalytic H2-evolution activity and mechanism insight

Zhang, Yazhou; Shi, Jinwen; Huang, Zhifu; Guan, Xiangjiu; Zong, Shichao; Cheng, Cheng; Zheng, Botong; Guo, Liejin

doi:10.1016/j.cej.2020.126135

Cited by 147 publications

(57 citation statements)

References 62 publications

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“…The photocathode after introducing Cu NSA has weaker steady-state PL intensity, indicating the effective suppression of the recombination of photo-generated charge carriers. [31,32] Moreover, the transfer dynamics of charge carriers were further investigated by measuring transient PL decay spectra, the results are shown in Figure 3d and Table S3. The average carriers' lifetime (τ avg ) of the CF/Cu NSA/CuI/P3HT : PCBM photocathode is greater than that of CF /CuI/P3HT : PCBM photocathode, which is consistent with the order of steady-state PL intensity.…”

Section: Resultsmentioning

confidence: 99%

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Zhang

Sun

Zheng

et al. 2021

Chemistry A European J

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The Z-scheme overall solar water splitting is a mimic of natural photosynthesis to convert solar energy into chemical energy. Since the energy levels of most organic semiconductors match well with the hydrogen evolution potential, they have great application prospects as photocathodes in Z-scheme photoelectrochemical systems. However, due to the weak light absorption and difficult carrier separation, the photocurrent density and onset potential of organic photocathodes are still low. To solve these problems, we introduced a copper nanosheets array (Cu NSA) framework under organic layers to increase the surface reaction sites, improve the light absorption and enhance the distribution range of built-in electric field simultaneously. As a result, the photocurrent density and onset potential of poly(3-hexylthiophene) : [6,6]-phenyl-C 61 -butyric acid (P3HT : PCBM) photocathode were enhanced significantly. The onset potential increased by 50 mV to 0.65 V vs. RHE, and the photocurrent density reached À 1 mA cm À 2 at 0 V vs. RHE, which was 18 times that of the sample without Cu NSA. The optimized photocathode was connected with titanium dioxide nanorods array photoanode in a tandem manner to realize the spontaneous overall water splitting. Without bias and co-catalyst, the photocurrent density was maintained at 110 μA cm À 2 and the solar-to-fuel conversion efficiency was 0.14 % in neutral solution. These results provide a feasible method for optimizing the performance of organic photocathodes.

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Section: Resultsmentioning

confidence: 99%

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Zhang

Sun

Zheng

et al. 2021

Chemistry A European J

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“…[5][6][7] So far, a number of heterojunction photocatalysts have been extensively investigated. [8][9][10][11][12][13][14][15][16][17][18][19] However, these conventional photocatalysts have suffered from problems such as poor capacity of visible light absorption, insufficient active sites for hydrogen production, and low efficiency of photo-generated electron-hole pair separation. Most conventional pristine photocatalysts, such as TiO 2 or g-C 3 N 4 , exhibit insufficient photocatalytic efficiency due to their rapid recombination of light-triggered electron-hole pairs.…”

Section: Introductionmentioning

confidence: 99%

Ti₃C₂T_x MXene nanosheets hybridized with bacteriochlorin–carotenoid conjugates for photocatalytic hydrogen evolution

Sun

Fujii

et al. 2022

New J. Chem.

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“…Since the photoelectrochemical water splitting on a titania electrode was discovered by Fujishima and Honda in 1972, [ 1 ] lots of semiconductor‐based photocatalysts were developed to investigate on converting solar energy into chemical energy. [ 2–4 ] Although great achievements have been obtained, most of the photocatalysts still suffer unfavorable obstacles, such as weak photocatalytic stability, low efficiency, or environmental pollution, all of which critically restrict the practical application of the photocatalysis technology. [ 5–7 ] Therefore, developing appropriate photocatalysts that can overcome the above problems is always an essential strategy for the ultimate goal of high‐efficiency photocatalytic H 2 production.…”

Section: Introductionmentioning

confidence: 99%

Nanosized BaSnO₃ as Electron Transport Promoter Coupled with g‐C₃N₄ toward Enhanced Photocatalytic H₂ Production

Kang

Shi

et al. 2021

Advanced Sustainable Systems

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A series of type‐II BaSnO3/g‐C3N4 heterojunction composites are prepared by anchoring BaSnO3 on g‐C3N4 via a facile solvothermal method. BaSnO3 is applied as an electron transport promoter in the field of photocatalytic H2 production under visible light for the first time. BaSnO3 shows excellent performance in collecting and transferring photogenerated electrons from g‐C3N4 to reactive sites, thus effectively inhibiting the recombination of photogenerated electron–holes. Consequently, the photocatalytic H2‐production activity of BaSnO3/g‐C3N4 composite is enhanced up to 3.2 times compared to that of pristine g‐C3N4. This work provides a meaningful reference for the application of electron transport materials in the field of photocatalysis.

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Synchronous construction of CoS2 in-situ loading and S doping for g-C3N4: Enhanced photocatalytic H2-evolution activity and mechanism insight

Cited by 147 publications

References 62 publications

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Ti₃C₂T_x MXene nanosheets hybridized with bacteriochlorin–carotenoid conjugates for photocatalytic hydrogen evolution

Nanosized BaSnO₃ as Electron Transport Promoter Coupled with g‐C₃N₄ toward Enhanced Photocatalytic H₂ Production

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Synchronous construction of CoS2 in-situ loading and S doping for g-C3N4: Enhanced photocatalytic H2-evolution activity and mechanism insight

Cited by 147 publications

References 62 publications

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Organic Photocathode Supported by Copper Nanosheets Array for Overall Water Splitting

Ti3C2Tx MXene nanosheets hybridized with bacteriochlorin–carotenoid conjugates for photocatalytic hydrogen evolution

Nanosized BaSnO3 as Electron Transport Promoter Coupled with g‐C3N4 toward Enhanced Photocatalytic H2 Production

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Ti₃C₂T_x MXene nanosheets hybridized with bacteriochlorin–carotenoid conjugates for photocatalytic hydrogen evolution

Nanosized BaSnO₃ as Electron Transport Promoter Coupled with g‐C₃N₄ toward Enhanced Photocatalytic H₂ Production