An Oxidant-Free Strategy for Indole Synthesis via Intramolecular C–C Bond Construction under Visible Light Irradiation: Cross-Coupling Hydrogen Evolution Reaction

ACS Catalysis ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 4635-4639 ◽  
Author(s):  
Cheng-Juan Wu ◽  
Qing-Yuan Meng ◽  
Tao Lei ◽  
Jian-Ji Zhong ◽  
Wen-Qiang Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Visible Light Irradiation ◽  
Cross Coupling ◽  
Light Irradiation ◽  
Indole Synthesis

Electrochemical conversion of bulk platinum into platinum single-atom sites for the hydrogen evolution reaction

2020 ◽  
Vol 8 (21) ◽  
pp. 10755-10760 ◽  
Author(s):  
Zhiyuan Wang ◽  
Jia Yang ◽  
Jie Gan ◽  
Wenxing Chen ◽  
Fangyao Zhou ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Single Atom ◽  
Carbon Paper ◽  
Electrochemical Conversion ◽  
Excellent Activity

An electro-filtration strategy is used to access a Pt single-atom sites catalyst on graphite carbon paper at room temperature from Pt foil, assisted by a GOM membrane. It exhibits excellent activity and stability towards HER (with CdS) under visible-light irradiation.

Visual observation of hydrogen bubble generation from monodisperse CoP QDs on ultrafine g-C3N4 fiber under visible light irradiation

2019 ◽  
Vol 7 (45) ◽  
pp. 25908-25914 ◽  
Author(s):  
Yunxiong Zeng ◽  
Yingchun Xia ◽  
Wenjia Song ◽  
Shenglian Luo
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Visible Light Irradiation ◽  
Visual Observation ◽  
Light Irradiation ◽  
Hydrogen Bubble ◽  
Bubble Generation ◽  
Clean Fuels

Solar-driven hydrogen evolution reaction (HER) via water splitting is an attractive technology to address the growing demand for clean fuels.

Photo-enhanced electrocatalysis of sea-urchin shaped Ni3(VO4)2 for the hydrogen evolution reaction

2017 ◽  
Vol 5 (34) ◽  
pp. 18038-18043 ◽  
Author(s):  
Bin Chang ◽  
Gang Zhao ◽  
Yongliang Shao ◽  
Lei Zhang ◽  
Baibiao Huang ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Sea Urchin ◽  
Hydrogen Evolution Reaction ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Tafel Slope ◽  
Excellent Stability

Under visible light irradiation, photoinduced electrons help the sea-urchin shaped Ni3(VO4)2 electrocatalyst achieve a drastic enhancement of HER activity (Tafel slope of 50 mV per decade) and excellent stability without any cocatalysts.

Halloysite Nanoclay Based CdS Formulations with High Catalytic Activity in Hydrogen Evolution Reaction under Visible Light Irradiation

2017 ◽  
Vol 5 (12) ◽  
pp. 11316-11323 ◽  
Author(s):  
Vladimir A. Vinokurov ◽  
Anna V. Stavitskaya ◽  
Evgenii V. Ivanov ◽  
Pavel A. Gushchin ◽  
Denis V. Kozlov ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
High Catalytic Activity

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.

CdS/Ag2S/g-C3N4 ternary composites with superior photocatalytic performance for hydrogen evolution under visible light irradiation

2021 ◽  
Vol 50 (9) ◽  
pp. 3253-3260 ◽  
Author(s):  
Shan Zhao ◽  
Junbiao Wu ◽  
Yan Xu ◽  
Xia Zhang ◽  
Yide Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Synergic Effect

CdS/Ag2S/g-C3N4 ternary composites showed excellent photocatalytic performance toward H2 evolution. Their improved photocatalytic activity could be attributed not only to the synergic effect, but also to the introduction of Ag2S.

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).

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