Novel Ti3C2/Bi@BiOI nanosheewets with gradient oxygen vacancies for the enhancement of spatial charge separation and photocatalytic performance: The roles of reactive oxygen and iodine species

2021 ◽  
pp. 130764
Author(s):  
Peng Gao ◽  
Zijing Zhang ◽  
Li Feng ◽  
Yongze Liu ◽  
Ziwen Du ◽  
...  
Keyword(s):  
Charge Separation ◽  
Oxygen Vacancies ◽  
Photocatalytic Performance ◽  
Reactive Oxygen ◽  
Iodine Species ◽  
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.

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...

scholarly journals Enhanced charge separation and increased oxygen vacancies of h-BN/OV-BiOCl for improved visible-light photocatalytic performance

RSC Advances ◽  
2019 ◽  
Vol 9 (25) ◽  
pp. 14286-14295 ◽  
Author(s):  
Wenhui He ◽  
Yawen Wang ◽  
Caimei Fan ◽  
Yunfang Wang ◽  
Xiaochao Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Oxygen Vacancies ◽  
Photocatalytic Performance ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

h-BN/OV-BiOCl composites were prepared to improve the visible-light photocatalytic activity of OV-BiOCl.

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

Oxygen vacancies mediated charge separation and collection in Pt/WO3 nanosheets for enhanced photocatalytic performance

2020 ◽  
Vol 507 ◽  
pp. 145133 ◽  
Author(s):  
Juan-Juan Li ◽  
Meng Zhang ◽  
Bo Weng ◽  
Xi Chen ◽  
Jing Chen ◽  
...  
Keyword(s):  
Charge Separation ◽  
Oxygen Vacancies ◽  
Photocatalytic Performance

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.

Sign in / Sign up

Export Citation Format

Share Document