Insight into the Effect of Oxygen Vacancy Concentration on the Catalytic Performance of MnO2

ACS Catalysis ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 4825-4832 ◽  
Author(s):  
Li Li ◽  
Xianghong Feng ◽  
Yao Nie ◽  
Siguo Chen ◽  
Feng Shi ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Vacancy Concentration ◽  
Catalytic Performance ◽  
Oxygen Vacancy Concentration ◽  
Effect Of Oxygen ◽  
Insight Into

Conversion of syngas into light olefins over bifunctional ZnCeZrO/SAPO-34 catalysts: regulation of the surface oxygen vacancy concentration and its relation to the catalytic performance

2021 ◽  
Author(s):  
Yaoya Luo ◽  
Sen Wang ◽  
Shujia Guo ◽  
Kai Yuan ◽  
Hao Wang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Oxygen Vacancies ◽  
Vacancy Concentration ◽  
Catalytic Performance ◽  
Light Olefins ◽  
Oxygen Vacancy Concentration ◽  
Surface Oxygen ◽  
Surface Oxygen Vacancy

Surface oxygen vacancies can improve the formation of methanol intermediates and promote their evolution into olefin products for syngas-to-olefins over Zn0.5CeZrOx/SAPO-34.

scholarly journals Effect of oxygen vacancy concentration on indium tungsten oxide UV-A photodetector

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 87-90 ◽  
Author(s):  
Kuan-Yin Chen ◽  
Sheng-Po Chang ◽  
Chih-hung Lin
Keyword(s):  
Oxygen Vacancy ◽  
Magnetron Sputtering ◽  
Radio Frequency ◽  
Tungsten Oxide ◽  
Vacancy Concentration ◽  
Radio Frequency Magnetron ◽  
Oxygen Vacancy Concentration ◽  
Radio Frequency Magnetron Sputtering ◽  
Uv Photodetector ◽  
Effect Of Oxygen

An indium tungsten oxide (IWO) ultraviolet (UV) photodetector was fabricated with radio frequency magnetron sputtering.

Effect of oxygen vacancy concentration on domain switching of Bi 3.15 Nd 0.85 Ti 3 O 12

2011 ◽  
Vol 94 (3) ◽  
pp. 37002 ◽  
Author(s):  
H. Huang ◽  
X. L. Zhong ◽  
S. H. Xie ◽  
Y. Zhang ◽  
J. B. Wang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Domain Switching ◽  
Vacancy Concentration ◽  
Oxygen Vacancy Concentration ◽  
Effect Of Oxygen

The Effect of Oxygen Vacancy Concentration on Indium Gallium Oxide Solar Blind Photodetector

2018 ◽  
Vol 65 (5) ◽  
pp. 1817-1822 ◽  
Author(s):  
Kuan-Yu Chen ◽  
Ching-Chien Hsu ◽  
Hsin-Chieh Yu ◽  
Yu-Ming Peng ◽  
Chih-Chiang Yang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Gallium Oxide ◽  
Vacancy Concentration ◽  
Oxygen Vacancy Concentration ◽  
Solar Blind ◽  
Indium Gallium ◽  
Effect Of Oxygen

Effect of oxygen vacancy concentration on the absorption spectra of Dy2Ti2O7 crystal

2014 ◽  
Vol 599 ◽  
pp. 170-174 ◽  
Author(s):  
Junbiao Kang ◽  
Zhenxing Fang ◽  
Xiang Chen ◽  
Wei Liu ◽  
Feiyun Guo ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Absorption Spectra ◽  
Vacancy Concentration ◽  
Oxygen Vacancy Concentration ◽  
Effect Of Oxygen

scholarly journals Effect of Oxygen Vacancy Concentration on the Photocatalytic Hydrogen Evolution Performance of Anatase TiO2: DFT and Experimental Studies

2021 ◽  
Author(s):  
Shufang Jia ◽  
Jiaqi Gao ◽  
Qianqian Shen ◽  
Jinbo Xue ◽  
Zhuxia Zhang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Vacancy ◽  
Water Splitting ◽  
Vacancy Concentration ◽  
Experimental Studies ◽  
Chemical Properties ◽  
Electron Transition ◽  
Partial Density ◽  
Oxygen Vacancy Concentration ◽  
Effect Of Oxygen

Abstract Oxygen vacancies (OVs) are important for changing the geometric and electronic structure as well as the chemical properties of anatase TiO2. In this work, we performed a DFT calculation on the electronic structure and catalytic performance of anatase TiO2 (101) with different numbers of OVs. A comparison of the measured XRD results with the simulated ones of TiO2 demonstrates that OVs can cause changes in the crystal structure. The changes in the electronic structure (Mulliken charges, band structure, and partial density of states) and water splitting on TiO2 (101) surfaces were investigated as a function of oxygen vacancy concentration. The results show that the introduction of oxygen vacancy forms impurity levels below the conduction band of Ti 3d orbitals, and electrons can gradually transit from VB to CB through the impurity levels. However, when oxygen vacancy concentration is too high, the maximum electron transition energy increases and the promotion effect of oxygen vacancy on water splitting is weakened. This work would provide more enlightenment and information for the design of defective TiO2 with higher photocatalytic activity.

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