Enhanced light harvesting and electron-hole separation for efficient photocatalytic hydrogen evolution over Cu7S4-enwrapped Cu2O nanocubes

2019 ◽  
Vol 246 ◽  
pp. 202-210 ◽  
Author(s):  
Mengmeng Zhang ◽  
Zelin Chen ◽  
Yang Wang ◽  
Jinfeng Zhang ◽  
Xuerong Zheng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Light Harvesting ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Evolution

Bimetallic phosphide NixCo1-xP decorated flower-like ZnIn2S4 for enhanced photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Yumeng Wang ◽  
Tingting Zhang ◽  
Tingting Wei ◽  
Fengyan Li ◽  
Lin Xu
Keyword(s):  
Low Temperature ◽  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Production ◽  
Factors Affecting ◽  
Photocatalytic Hydrogen Evolution ◽  
And Migration

Promoting electron-hole separation and migration is one of the important factors affecting the rate of photocatalytic hydrogen production. Herein, we firstly prepared the NixCo1-xP modified ZnIn2S4 (ZIS) nanoflowers by low-temperature...

Novel CuBr-assisted graphdiyne synthesis strategy and application for efficient photocatalytic hydrogen evolution

2022 ◽  
Author(s):  
Junke Li ◽  
Mei Li ◽  
Hongying Li ◽  
Zhiliang Jin
Keyword(s):  
Hydrogen Evolution ◽  
Hole Mobility ◽  
High Electron ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Evolution ◽  
Synthesis Strategy ◽  
Narrow Bandgap

As a new allotrope of carbon, graphdiyne (GDY) also shows great potential in photocatalysis based on the characteristics of narrow bandgap and high electron-hole mobility. This work synthesized the GDY-CuBr...

scholarly journals Direct probing of atomically dispersed Ru species over multi-edged TiO2 for highly efficient photocatalytic hydrogen evolution

2020 ◽  
Vol 6 (39) ◽  
pp. eabb9823
Author(s):  
Huabin Zhang ◽  
Shouwei Zuo ◽  
Mei Qiu ◽  
Sibo Wang ◽  
Yongfan Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Separation Efficiency ◽  
Structural Evolution ◽  
Photocatalytic Process ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Evolution ◽  
Photogenerated Electrons ◽  
Ru Species ◽  
Kinetics Of

A cocatalyst is necessary for boosting the electron-hole separation efficiency and accelerating the reaction kinetics of semiconductors. As a result, it is of critical importance to in situ track the structural evolution of the cocatalyst during the photocatalytic process, but it remains very challenging. Here, atomically dispersed Ru atoms are decorated over multi-edged TiO2 spheres for photocatalytic hydrogen evolution. Experimental results not only demonstrate that the photogenerated electrons can be effectively transferred to the isolated Ru atoms for hydrogen evolution but also imply that the TiO2 architecture with multi-edges might facilitate the charge separation and transport. The change in valence and the evolution of electronic structure of Ru sites are well probed during the photocatalytic process. Specifically, the optimized catalyst produces the hydrogen evolution rate of 7.2 mmol g−1 hour−1, which is much higher than that of Pt-based cocatalyst systems and among the highest reported values.

scholarly journals One-step scalable synthesis of honeycomb-like g-C3N4 with broad sub-bandgap absorption for superior visible-light-driven photocatalytic hydrogen evolution

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32674-32682 ◽  
Author(s):  
Shanshan Li ◽  
Chun Hu ◽  
Yannan Peng ◽  
Zhihong Chen
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Active Sites ◽  
Light Harvesting ◽  
Photocatalytic Hydrogen Evolution ◽  
Production Activity ◽  
Visible Light Driven ◽  
One Step ◽  
Scalable Synthesis

Integration of a nanostructure design with a sub-bandgap enhances the photocatalytic H2 production activity of g-C3N4via facilitating separation of photogenerated charges while simultaneously increasing the active sites and light harvesting ability.

scholarly journals Enhancing Charge Separation in Conjugated Microporous Polymers for Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Author(s):  
Zhuangfei Qian ◽  
Yajie Yan ◽  
Ziqi Liang ◽  
Xiaodong Zhuang ◽  
Kai A. I. Zhang
Keyword(s):  
Hydrogen Evolution ◽  
Organic Semiconductor ◽  
Charge Separation ◽  
High Efficiency ◽  
Photogenerated Electron ◽  
Limiting Factors ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

The fast recombination of photogenerated electron-hole pairs after charge separation is one of the main limiting factors for achieving high efficiency of organic semiconductor photocatalysts. Herein, we report a conjugated...

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