scholarly journals Origin of the enhanced photocatalytic activity of (Ni, Se, and B) mono- and co-doped anatase TiO2 materials under visible light: a hybrid DFT study

RSC Advances ◽  
2020 ◽  
Vol 10 (70) ◽  
pp. 43092-43102
Author(s):  
Hanan H. Ibrahim ◽  
Adel A. Mohamed ◽  
Ismail A. M. Ibrahim
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Dft Calculations ◽  
Visible Light ◽  
Water Splitting ◽  
Anatase Tio2 ◽  
Dft Study ◽  
Co Doped

Hybrid DFT calculations demonstrate that Ni, Se4+ and Se2− mono-doped and Ni/Se4+ co-doped TiO2 are potential photocatalysts for water splitting and hydrogen production.

Photocatalytic activity of ZrO2 composites with graphitic carbon nitride for hydrogen production under visible light

2019 ◽  
Vol 43 (11) ◽  
pp. 4455-4462 ◽  
Author(s):  
Mohammed Ismael ◽  
Ying Wu ◽  
Michael Wark
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Superior Performance ◽  
Electron Hole ◽  
Effective Electron ◽  
Composite Interface

The synthesized ZrO2/g-C3N4 composites exhibit superior performance in water splitting for hydrogen production due to the effective electron–hole separation at the composite interface.

Photocatalytic Activity of Ce-Doped Hematite for Hydrogen Production

2014 ◽  
Vol 787 ◽  
pp. 46-51 ◽  
Author(s):  
Jia Jia Cai ◽  
Song Li ◽  
Jian Sheng Wang ◽  
Yu Dong Mei ◽  
Yu Ping Ren ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Thermal Oxidation ◽  
Water Splitting ◽  
Carrier Density ◽  
Oxidation Treatment

Hematite is one of the most promising photoanodes for water splitting, but its photoelectrochemical (PEC) efficiency is still low. This work proved that the PEC efficiency of hematite can be improved by Ce doping. The Ce doped hematite was successfully prepared by co-sputtering CeO2 and Fe2O3, and followed by thermal oxidation treatment. The results of J-V test showed that the photocurrent of 5 at.% Ce doped α-Fe2O3 film can reached 1.35mA/cm2 in 1 M NaOH (pH=13.6) at 1.23V vs. NHE, which is nearly 15 times higher than the undoped one. The enhancement of PEC efficiency was proved by the enhancement of absorbance of visible light, as well as increased carrier density after Ce doping.

scholarly journals N and Ti3+ co-doped 3D anatase TiO2 superstructures composed of ultrathin nanosheets with enhanced visible light photocatalytic activity

2015 ◽  
Vol 3 (44) ◽  
pp. 22073-22080 ◽  
Author(s):  
Guoliang Li ◽  
Jie Li ◽  
Gang Li ◽  
Guibin Jiang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Solvothermal Method ◽  
Anatase Tio2 ◽  
Visible Light Photocatalytic Activity ◽  
Ultrathin Nanosheets ◽  
Template Free ◽  
Co Doped ◽  
Visible Light Photocatalytic

A novel 3D-hierarchical anatase co-doped with N and Ti3+ was synthesized via a facile template-free solvothermal method for improved vis-photocatalytic activity.

CdS-Based Photocatalysts for Solar Water Splitting

2021 ◽  
Vol 02 ◽  
Author(s):  
Yimeng Cao ◽  
Chuhong Zhu ◽  
Taotao Wang ◽  
Daochuan Jiang ◽  
Sheng Ye
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Narrow Band ◽  
Heteroatom Doping ◽  
Visible Light Absorption ◽  
Solar Water Splitting ◽  
Band Position

: Photocatalytic water splitting for hydrogen production is a promising pathway for solar energy convention into chemicals. Among various semiconductor-based photocatalysts, cadmium sulfide (CdS) attracted extensive attentions due to the narrow band gap nature (2.4 eV) for efficient visible light absorption, suitable band position for water splitting, and outstanding photocatalytic activity. In this review, we summarize the recent advances for the synthesis of CdS, and modification strategies including heteroatom doping, loading cocatalysts, and hetero/homo-junction fabrication are also presented. Moreover, a brief perspective and challenges on CdS-based photocatalyst are also discussed.

Enhanced visible light photocatalytic activity of Cu2O via cationic–anionic passivated codoping

2015 ◽  
Vol 17 (1) ◽  
pp. 630-637 ◽  
Author(s):  
Yao Jiang ◽  
Hongkunag Yuan ◽  
Hong Chen
Keyword(s):  
Photocatalytic Activity ◽  
Angular Momentum ◽  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Electronic Transition ◽  
Oxygen Production ◽  
Selection Rules ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

To improve the photocatalytic activity of Cu2O for hydrogen production through water splitting, the band edges of Cu2O should be modified to meet the electronic transition of angular momentum selection rules (Δl = ±1) and match with the hydrogen or oxygen production levels.

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