From One to Three: How to Achieve Well-steered Spatial Charge Separation in Janus-like Asymmetrically Graphene Oxide Films for High Photocatalytic Performance

2021 ◽  
pp. 152282
Author(s):  
Ying Wang ◽  
Yuexing Chen ◽  
Yong Liang ◽  
Bolin Wang ◽  
Maojun Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Oxide Films ◽  
Spatial Charge

scholarly journals Enhanced Photocatalytic Activity of BiVO4/Bi2S3/SnS2 Heterojunction under Visible Light

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1294
Author(s):  
Sopheak Meng ◽  
Takaya Ogawa ◽  
Hideyuki Okumura ◽  
Keiichi N. Ishihara
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Charge Separation ◽  
Solvothermal Synthesis ◽  
Photocatalytic Performance ◽  
Binding Energies ◽  
X Ray ◽  
Spatial Charge ◽  
Photodegradation Rate

Heterojunction photocatalysts have attracted a significant amount of attention due to their advantages over a single photocatalyst and, particularly, their superior spatial charge separation. Herein, the BiVO4/Bi2S3/SnS2 heterojunction was synthesized via solvothermal synthesis with different ratios of BiVO4 to SnS2. The photodegradation rate of the 0.03 BiVO4/SnS2 sample for rhodamine B removal is 2.3 times or 2.9 times greater than that of a single SnS2 or BiVO4, respectively. The chemical bond between photocatalysts is confirmed by X-ray photoelectron spectroscopy (XPS), and the synchronized shift observed in binding energies strongly indicates the electron screening effect at the heterojunction. A Z-scheme model is proposed to explain charge transfer pathway in the system, in which the formation of Bi2S3 plays a crucial role in the enhanced photocatalytic performance of the heterojunction.

Controllable in situ synthesis of BiOBrxI1−x solid solution on reduced graphene oxide with enhanced visible light photocatalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 68151-68158 ◽  
Author(s):  
Zhichong Yang ◽  
Fuxing Cheng ◽  
Xiaoping Dong ◽  
Fangming Cui
Keyword(s):  
Solid Solution ◽  
Graphene Oxide ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
In Situ Synthesis ◽  
Deposition Method ◽  
Reduced Graphene ◽  
Photocatalytic Activities ◽  
Visible Light Photocatalytic

BiOBrxI1−x–rGO solid solution photocatalysts have been developed by an in situ controllable deposition method, which possessed exceptional photocatalytic activities due to their more effective charge separation and transportation.

Facet-selective charge separation in layered bismuth-based photocatalysts

2021 ◽  
Author(s):  
Cheng Hu ◽  
Na Tian ◽  
Yihe Zhang ◽  
Hongwei Huang
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Solar Energy Conversion ◽  
Spatial Charge

Facet-selective charge separation in semiconductors has been considered one of the most vital factors to improve their photocatalytic performance and selectivity for solar energy conversion due to the spatial charge...

Synthesis, Characterization, and Light-Induced Spatial Charge Separation in Janus Graphene Oxide

2018 ◽  
Vol 30 (6) ◽  
pp. 2084-2092 ◽  
Author(s):  
Alexander Holm ◽  
Joonsuk Park ◽  
Emmett D. Goodman ◽  
Jiaming Zhang ◽  
Robert Sinclair ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Separation ◽  
Spatial Charge

In Situ Spatial Charge Separation of an Ir@TiO2 Multiphase Photosystem toward Highly Efficient Photocatalytic Performance of Hydrogen Production

2020 ◽  
Vol 124 (31) ◽  
pp. 16961-16974 ◽  
Author(s):  
Ton Nu Quynh Trang ◽  
Nguyen Dang Nam ◽  
Le Thi Ngoc Tu ◽  
Hau Pham Quoc ◽  
Tran Van Man ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Highly Efficient ◽  
Spatial Charge

Core–shell carbon colloid sphere@phosphotungstic acid/CdS as a Z-scheme heterojunction with synergistic adsorption, photothermal and photocatalytic performance

2021 ◽  
Vol 11 (18) ◽  
pp. 6080-6088
Author(s):  
Yongqian Cui ◽  
Zipeng Xing ◽  
Meijun Guo ◽  
Yalu Qiu ◽  
Bin Fang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Phosphotungstic Acid ◽  
Photothermal Effect ◽  
Core Shell ◽  
Spatial Charge ◽  
Visible Light Driven

Core–shell carbon colloid sphere@phosphotungstic acid/CdS exhibits excellent visible-light-driven photocatalytic performance, which is due to the Z-scheme heterojunction favoring the charge transfer and spatial charge separation and the photothermal effect.

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