Chemical reduction-induced surface oxygen vacancies of BiVO4 photoanodes with enhanced photoelectrochemical performance

2021 ◽  
Vol 5 (8) ◽  
pp. 2284-2293
Author(s):  
Yong Peng ◽  
Hao Wu ◽  
Mingjian Yuan ◽  
Fang-Fang Li ◽  
Xingli Zou ◽  
...  
Keyword(s):  
Chemical Treatment ◽  
Oxygen Vacancies ◽  
Sodium Sulfite ◽  
Chemical Reduction ◽  
Surface States ◽  
Reducing Agent ◽  
Surface Oxygen ◽  
Photoelectrochemical Performance ◽  
Reduction Activity ◽  
Mild Reduction

A facile chemical treatment employing a reducing agent sodium sulfite with a mild reduction activity is used to alter the surface states of BiVO4 photoanodes. The sulfite-treated BiVO4 (S-BiVO4) exhibits an enhanced photoelectrochemical performance.

Enhanced photoelectrochemical performance of plate-like WO 3 induced by surface oxygen vacancies

2016 ◽  
Vol 68 ◽  
pp. 81-85 ◽  
Author(s):  
Yang Liu ◽  
Jie Li ◽  
Hui Tang ◽  
Wenzhang Li ◽  
Yahui Yang ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
Photoelectrochemical Performance

scholarly journals Влияние микропримесей d-элементов на электронную структуру кристаллитов оксида бария в катодах СВЧ-приборов

2020 ◽  
Vol 46 (3) ◽  
pp. 6
Author(s):  
В.И. Капустин ◽  
И.П. Ли ◽  
А.В. Шуманов ◽  
С.О. Москаленко ◽  
Р.Р. Залялиев ◽  
...  
Keyword(s):  
Electron Spectroscopy ◽  
Oxygen Vacancies ◽  
Barium Oxide ◽  
Surface States ◽  
Microwave Devices ◽  
Surface Oxygen ◽  
Crystallite Surface ◽  
Donor And Acceptor ◽  
Donor Type ◽  
First Time

Using the electron spectroscopy method for chemical analysis, it was experimentally established for the first time that microimpurities of d elements (W, Re, Ni, Pd, Os) in BaO crystallites from the composition of cathodes of microwave devices lead to the formation of donor-type surface states on the crystallite surface, which can partially compensate acceptor-type surface states due to surface oxygen vacancies, which leads to a decrease in the potential barrier on the crystallite surface and, accordingly, to a decrease the magnitude of the work function of the cathode. Key words: cathodes of microwave devices, crystallites of barium oxide, trace elements of d-elements, surface states of donor and acceptor type.

WO3 photoanodes with controllable bulk and surface oxygen vacancies for photoelectrochemical water oxidation

2018 ◽  
Vol 6 (8) ◽  
pp. 3350-3354 ◽  
Author(s):  
Jijie Zhang ◽  
Xiaoxia Chang ◽  
Chengcheng Li ◽  
Ang Li ◽  
Shanshan Liu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Ozone Treatment ◽  
Surface Oxygen ◽  
Photoelectrochemical Performance ◽  
Hydrogen Annealing ◽  
Bulk Oxygen ◽  
Photoelectrochemical Water Oxidation ◽  
Reduced Surface

WO3 nanoflake photoanodes with suitable bulk oxygen vacancies and reduced surface oxygen vacancies are synthesized by hydrogen annealing and ozone treatment, which exhibit excellent photoelectrochemical performance.

Adjusting surface oxygen vacancies prompted perovskite as high performance cathode for solid oxide fuel cell

2021 ◽  
Vol 865 ◽  
pp. 158746
Author(s):  
Yongchao Niu ◽  
Xiaoju Yin ◽  
Chengzhi Sun ◽  
Xueqin Song ◽  
Naiqing Zhang
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Surface Oxygen

Defective Fe3+ self-doped spinel ZnFe2O4 with oxygen vacancies for highly efficient photoelectrochemical water splitting

2019 ◽  
Vol 48 (31) ◽  
pp. 11934-11940 ◽  
Author(s):  
Jianmin Wang ◽  
Yunan Wang ◽  
Xinchao Xv ◽  
Yan Chen ◽  
Xi Yang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Vacancies ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance ◽  
Highly Efficient

Defective Fe3+ self-doped spinel ZnFe2O4 with abundant oxygen vacancies exhibits largely enhanced photoelectrochemical performance.

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