The promotion effect of surface negative electrostatic field on the photogenerated charge separation of BiVO4 and its contribution to the enhanced PEC water oxidation

2015 ◽  
Vol 51 (14) ◽  
pp. 2821-2823 ◽  
Author(s):  
Mingzheng Xie ◽  
Ji Bian ◽  
Muhammad Humayun ◽  
Yang Qu ◽  
Yujie Feng ◽  
...  
Keyword(s):  
Visible Light ◽  
Electrostatic Field ◽  
Water Oxidation ◽  
Charge Separation ◽  
Negative Charge ◽  
Promotion Effect ◽  
Light Activity ◽  
Photogenerated Charge Separation ◽  
Effect Of Surface

The surface-carried negative charge of BiVO4 is favorable for the charge separation, leading to obviously enhanced visible-light-activity for PEC water oxidation.

Rutile TiO2 single crystals delivering enhanced photocatalytic oxygen evolution performance

Nanoscale ◽  
2021 ◽  
Author(s):  
Bing Fu ◽  
Zhijiao Wu ◽  
Kai Guo ◽  
Lingyu Piao
Keyword(s):  
Catalytic Activity ◽  
Single Crystals ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Charge Separation ◽  
High Surface ◽  
Rutile Tio2 ◽  
Highly Efficient ◽  
Photogenerated Charge Separation

Owing to their scientific and technological importance, the development of highly efficient photocatalytic water oxidation systems with rapid photogenerated charge separation and high surface catalytic activity has highly desirable for...

Rational design of light induced self healed Fe based oxygen vacancy rich CeO2 (CeO2NS–FeOOH/Fe2O3) nanostructure materials for photocatalytic water oxidation and Cr(vi) reduction

2018 ◽  
Vol 6 (24) ◽  
pp. 11377-11389 ◽  
Author(s):  
S. Sultana ◽  
S. Mansingh ◽  
K. M. Parida
Keyword(s):  
Oxygen Vacancy ◽  
Visible Light ◽  
Water Oxidation ◽  
Charge Separation ◽  
Rational Design ◽  
Separation Efficiency ◽  
Nanostructure Materials ◽  
Charge Separation Efficiency ◽  
Uv Visible

Self regenerating oxygen vacancy rich CeO2NS–FeOOH/Fe2O3 hybrids are optimized and show superior charge separation efficiency both in visible and UV-visible light.

Visible-light-driven photocatalytic CO2 reduction over ketoenamine-based covalent organic frameworks: role of the host functional groups

2021 ◽  
Author(s):  
Lianlian Peng ◽  
Shuqing Chang ◽  
Ziling Liu ◽  
Yanghe Fu ◽  
Rui Ma ◽  
...  
Keyword(s):  
Visible Light ◽  
Functional Groups ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Co2 Reduction ◽  
Covalent Organic Frameworks ◽  
Visible Light Driven ◽  
Photogenerated Charge Separation ◽  
Electron Donating Groups

Compared to the electron-withdrawing groups, the electron-donating groups in TpBD can accelerate the photogenerated charge separation and transfer, thereby improving the photocatalytic performance for photocatalytic CO2 reduction.

Eosin Y-sensitized ZnO/TiO2 for efficient visible light photocatalytic hydrogen evolution

2011 ◽  
Vol 1326 ◽  
Author(s):  
Haipei Liu ◽  
Dengwei Jing ◽  
Liejin Guo
Keyword(s):  
Visible Light ◽  
Charge Separation ◽  
Particle Surface ◽  
Excited Electron ◽  
Charge Carriers ◽  
Eosin Y ◽  
Light Activity ◽  
Efficient Charge ◽  
Visible Light Photocatalytic ◽  
Trapping Sites

ABSTRACTIn this work a series of Eosin Y-ZnO(x%)/TiO2 were prepared. ZnO well dispersed on the surface of TiO2, which improves the adsorption of Eosin Y and the excited electron to transfer to the conduction band of TiO2. Therefore the visible light activity of 0.2%Pt-Eosin Y-ZnO(x%)/TiO2 is much higher than that of the 0.2%Pt-Eosin Y-TiO2 and 0.2%Pt-Eosin Y-ZnO. The 0.2%Pt-Eosin Y- ZnO(1.5%)/TiO2 has the highest visible light activity among the catalysts coupled with various ZnO amount, whose activity is increased by a factor of 3.5 compared to that of 0.2%Pt-Eosin Y-TiO2. It is proposed that, 0.2%Pt-Eosin Y-ZnO(1.5%)/TiO2 has the optimal trapping sites of carriers and thickness of the space-charge layer on the TiO2 particle surface, so these factors result a more efficient charge separation, an increased lifetime of the charge carriers, and the enhanced of hydrogen production .

Boosting photocatalytic degradation of ethyl acetate by Z­scheme Au-TiO2@NH2-UiO-66 heterojunction with ultrafine Au as electron mediator

2021 ◽  
Author(s):  
Hongli Liu ◽  
Xiaoyi Chang ◽  
Xiaoxun Liu ◽  
Guiying Li ◽  
Weiping Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Ethyl Acetate ◽  
Charge Separation ◽  
Photocatalytic Oxidation ◽  
Separation Efficiency ◽  
Light Response ◽  
Electron Mediator ◽  
Visible Light Response ◽  
Charge Separation Efficiency ◽  
Photogenerated Charge Separation

TiO2 based photocatalytic oxidation has been regarded as a promising technology for VOCs removal, while it remains challenging by the limited visible light response and low photogenerated charge separation efficiency....

Efficient spatial charge separation in unique 2D tandem heterojunction CdxZn1−xIn2S4–CdS–MoS2 rendering highly-promoted visible-light-induced H2 generation

2021 ◽  
Vol 9 (1) ◽  
pp. 482-491
Author(s):  
Jiakun Wu ◽  
Bowen Sun ◽  
Hui Wang ◽  
Yanyan Li ◽  
Ying Zuo ◽  
...  
Keyword(s):  
Visible Light ◽  
Charge Separation ◽  
Effective Charge ◽  
Active Sites ◽  
H2 Generation ◽  
Highly Efficient ◽  
Spatial Charge

Unique 2D heterostructures CdxZn1−xIn2S4–CdS–MoS2 with effective charge separation, excellent light-harvest, and abundant active sites are highly-efficient for photocatalytic H2 evolution.

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