scholarly journals Realizing high hydrogen evolution activity under visible light using narrow band gap organic photocatalysts

2021 ◽  
Author(s):  
Changzhi Han ◽  
Peihua Dong ◽  
Haoran Tang ◽  
Peiyun Zheng ◽  
Chong Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Conjugated Polymer ◽  
Narrow Band ◽  
Light Irradiation ◽  
High Hydrogen ◽  
Photocatalytic Hydrogen Evolution ◽  
Hydrogen Evolution Rate

Narrow band gap conjugated polymer photocatalysts containing dithieno[3,2-b:2′,3′-d]thiophene-S,S-dioxide show an attractive photocatalytic hydrogen evolution rate of 16.32 mmol h−1 g−1 under visible light irradiation.

Investigation on graphene and Pt co-modified CdS nanowires with enhanced photocatalytic hydrogen evolution activity under visible light irradiation

2015 ◽  
Vol 44 (37) ◽  
pp. 16372-16382 ◽  
Author(s):  
Muhan Cao ◽  
Peifang Wang ◽  
Yanhui Ao ◽  
Chao Wang ◽  
Jun Hou ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Evolution Rate ◽  
High Hydrogen ◽  
Photocatalytic Hydrogen Evolution ◽  
Hydrogen Evolution Rate ◽  
Cds Nanowires ◽  
Hybrid Photocatalyst

A novel hybrid photocatalyst (graphene and Pt comodified CdS nanowires) was prepared for hydrogen evolution. The as-obtained samples showed a high hydrogen evolution rate of 3984 μmol h−1 g−1, which is almost 4 times higher than that of bare CdS nanowires.

Ag2O modified g-C3N4 for highly efficient photocatalytic hydrogen generation under visible light irradiation

2015 ◽  
Vol 3 (30) ◽  
pp. 15710-15714 ◽  
Author(s):  
Ming Wu ◽  
Jun-Min Yan ◽  
Xue-Wei Zhang ◽  
Ming Zhao ◽  
Qing Jiang
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Hydrogen Generation ◽  
Light Irradiation ◽  
Evolution Rate ◽  
High Hydrogen ◽  
Hydrogen Evolution Rate ◽  
Photocatalytic Hydrogen Generation

Ag2O/g-C3N4 shows a high hydrogen evolution rate from water splitting. It is much more efficient than g-C3N4 and Pt/g-C3N4.

Semiconductor Photocatalysts for Solar-to-Hydrogen Energy Conversion: Recent Advances of CdS

2020 ◽  
Vol 16 ◽  
Author(s):  
Yuxue Wei ◽  
Honglin Qin ◽  
Jinxin Deng ◽  
Xiaomeng Cheng ◽  
Mengdie Cai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Noble Metals ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Theoretical Design ◽  
Recent Developments

Introduction: Solar-driven photocatalytic hydrogen production from water splitting is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. In this review, recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. In particular, the factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Background: Photocatalytic hydrogen evolution from water splitting using photocatalyst semiconductors is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. Methods: This review summarizes the recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation. Results: Recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. The factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Conclusion: The state-of-the-art CdS for producing hydrogen from photocatalytic water splitting under visible light is discussed. The future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are also described.

D–π–A-type triphenylamine dye covalent-functionalized g-C3N4 for highly efficient photocatalytic hydrogen evolution

2020 ◽  
Vol 10 (6) ◽  
pp. 1609-1618 ◽  
Author(s):  
Chao Zhang ◽  
Jiandong Liu ◽  
Xingliang Liu ◽  
Shiai Xu
Keyword(s):  
Reaction Mechanism ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient

Reaction mechanism for the higher photocatalytic performance of H2 production of g-C3N4NSs/TC1 under visible light irradiation (λ ≥ 400 nm).

Noble-metal-free Ni3N/g-C3N4 photocatalysts with enhanced hydrogen production under visible light irradiation

2018 ◽  
Vol 47 (35) ◽  
pp. 12188-12196 ◽  
Author(s):  
Lu Chen ◽  
Huijuan Huang ◽  
Yuanhui Zheng ◽  
Wenhao Sun ◽  
Yi Zhao ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Free

Noble-metal-free Ni3N/g-C3N4 heterojunctions that show high photocatalytic hydrogen evolution activity comparable to platinized g-C3N4 were successfully synthesized.

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