Results 251 to 260 of about 82,292 (297)

Oxygen‐Vacancy‐Enhanced Singlet Oxygen Production for Selective Photocatalytic Oxidation

ChemSusChem, 2020
AbstractOxygen vacancies are usually thought to be beneficial for photogenerated charge separation. In this work, the oxygen vacancies in ov‐Bi2O3 (Bi2O3 with oxygen vacancy) were found to be able to produce 1O2 in the dark owing to chemical adsorption.
Jiajia Wang, Xilong Xu, Yuanyuan Liu, Zeyan Wang, Peng Wang, Zhaoke Zheng, Hefeng Cheng, Ying Dai, Baibiao Huang   +8 more
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Oxygen vacancies in lithium niobate

Applied Physics Letters, 1983
Optical absorption peaks at 760 and 500 nm in LiNbO3 are assigned to oxygen vacancies containing one and two electrons, respectively. The 500-nm band appears after annealing above approximately 500 °C in a vacuum, i.e., a reducing atmosphere, and continues to grow with increasing anneal temperature.
K. L. Sweeney, L. E. Halliburton
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Interaction of oxygen vacancies in yttrium germanates

Physical Chemistry Chemical Physics, 2012
Forming a good Ge/dielectric interface is important to improve the electron mobility of a Ge metal oxide semiconductor field-effect transistor. A thin yttrium germanate capping layer can improve the properties of the Ge/GeO(2) system. We employ electronic structure calculations to investigate the effect of oxygen vacancies in yttrium-doped GeO(2) and ...
Wang, Hao, Chroneos, Alexander I., Dimoulas, Athanasios Dimoulas, Schwingenschlögl, Udo   +3 more
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Oxygen vacancy diffusion in bare ZnO nanowires

Nanoscale, 2014
Oxygen vacancies (VO) are known to be common native defects in zinc oxide (ZnO) and to play important roles in many applications.
Bei, Deng, Andreia, Luisa da Rosa, Th, Frauenheim, J P, Xiao, X Q, Shi, R Q, Zhang, Michel A, Van Hove   +6 more
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Oxygen Vacancies in Barium Oxide

Physical Review, 1953
It has been shown by Dash that an optical absorption band at 2.0 ev occurs in BaO crystals when these are treated in barium or other metal vapors, giving the crystals a blue color. In order to determine the way the stoichiometric excess of metal is present in the lattice, the diffusion of the blue coloration into BaO has been measured over the range ...
R. L. Sproull, R. S. Bever, G. Libowitz
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Radiation Effects and Oxygen Vacancies in Silicates

Science, 1970
Proton and electron irradiation of silicates, minerals, and rocks produces a paramagnetic defect whose resonance spectrum is identical to that of the singly charged oxygen vacancy in silica glass and α-quartz. It is suggested that this defect is characteristic of all structures containing SiO 4 tetrahedra.
A, Chatelain, J L, Kolopus, R A, Weeks
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Oxygen vacancy chemistry in oxide cathodes

Chemical Society Reviews
This review focuses on the chemical thermodynamics and reaction kinetics of intrinsic and anionic redox-mediated oxygen vacancies in oxide cathodes.
Yu-Han Zhang, Shu Zhang, Naifang Hu, Yuehui Liu, Jun Ma, Pengxian Han, Zhiwei Hu, Xiaogang Wang, Guanglei Cui   +8 more
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Oxygen vacancy migration in MLCCS

2018 Pan Pacific Microelectronics Symposium (Pan Pacific), 2018
The multilayer ceramic capacitor (MLCC) has become a widely used electronics component. The MLCC technologies have gone through a number of material and process changes such as the shift from precious metal electrode (PME) configurations which were predominantly silver/palladium to base metal electrodes (BME) dominated by nickel and the expiration of ...
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Oxygen vacancies enhancing acetone-sensing performance

Materials Today Chemistry, 2020
Abstract Cd-doped In2O3 was synthesized by a facile solvothermal, template-free preparation method. The phase structure and properties were characterized by various methods. The surface of Cd-doped In2O3 became coarse compared with that of pure In2O3, according to the scanning electron microscopeimages, which enhanced the ability to absorb the gas ...
Xiangyan Hou, Huanhuan Liu, Yimeng Zhang, Mengpei Jiang, Long Yuan, Jingyu Shi, Changmin Hou   +6 more
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Oxygen vacancy boosted photocatalytic decomposition of ciprofloxacin over Bi2MoO6: Oxygen vacancy engineering, biotoxicity evaluation and mechanism study

Journal of Hazardous Materials, 2019
Herein, efficient visible light driven photocatalytic degradation of ciprofloxacin was realized over Bi2MoO6 with oxygen vacancies (OVs) which can be tunably introduced through a facile solvothermal method via the modulation of tetramethylethylenediamine (TMEDA).
Xiao Xu, Xing Ding, Xianglong Yang, Pei Wang, Shu Li, Zhexue Lu, Hao Chen   +6 more
openaire   +2 more sources