The role of water in reducing WO3 film by hydrogen: Controlling the concentration of oxygen vacancies and improving the photoelectrochemical performance

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成果类型：

期刊论文

作者：

Liu, Yang;Yang, Yahui;Liu, Qiong;Li, Yaomin;Lin, Jie;...

通讯作者：

Li, Wenzhang;Li, Jie

作者机构：

[Li, Jie; Liu, Qiong; Liu, Yang; Li, Wenzhang; Lin, Jie] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.

[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.

[Li, Yaomin] UCL, Dept Chem, London WC1H 0AJ, England.

[Lin, Jie] Xiamen Univ, Pen Tung Sah Micronano Sci & Technol Inst, Xiamen 361005, Fujian, Peoples R China.

[Li, Wenzhang] Cent S Univ, Minist Educ, Key Lab Metallogen Predict Nonferrous Met & Geol, Changsha 410083, Hunan, Peoples R China.

通讯机构：

[Li, WZ; Li, J] C

Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.

语种：

英文

关键词：

Bottles;Electric fields;Electrochemistry;Heterojunction bipolar transistors;High pressure effects;Photoelectrochemical cells;Water vapor;Wetting;Adhesive properties;Built-in electric fields;Chemical equilibriums;Contact angle hysteresis;Different pressures;Photoelectrochemical performance;Photoelectrochemicals;Surface hydroxyl groups;Oxygen vacancies;chemical compound;hydrogen;hydroxyl group;oxygen;tungsten derivative;tungsten trioxide;unclassified drug;water;absorption;adhesion;adsorption;Article;chemical composition;contact angle;contact angle hysteresis;crystal structure;crystallization;dissociation;electric field;electrochemistry;hydrophobicity;parameters;photoelectrochemistry;pressure;priority journal;reduction (chemistry);surface property;water temperature;wettability

期刊：

Journal of Colloid and Interface Science

ISSN：

0021-9797

年：

2018

卷：

512

页码：

86-95

DOI：

10.1016/j.jcis.2017.10.039

基金类别：

The crystal structures of the WO3 films deposited on FTO substrates were analyzed by measuring the X-ray diffraction (XRD) patterns. In Fig. 1, the peaks of the samples are similar. In this figure, the peaks in the range of 25–70° are indexed to SnO2 (JCPDS 46-1088) or the mixture of tetragonal SnO2 (JCPDS 46-1088) and monoclinic WO3 (JCPDS 72-0677). The samples show similar diffraction peak intensities at approximately 37.8°, 51.6° and 65.5° which can be indexed to SnO2 (2 0 0), SnO2 (2 1 1) and

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院系归属：

资源环境学院

摘要：

H2O, as a product of reduced reaction by H2, may affect the chemical equilibrium according to the changing of the pressure ratio of H2O/H2in the system. Meanwhile, the performance may also be influenced by adsorption of H2O on the surface of the material. In this work, the effect of H2O is studied by reducing plate-like array WO3films under different pressure ratio of H2O/H2. It is controlled by changing the water temperature in the washing bottle through which the Ar/H2(80:20) gas flows. The higher water vapor pressure not only decreases the content of W5+but also increases the content of sur...

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The role of water in reducing WO3 film by hydrogen: Controlling the concentration of oxygen vacancies and improving the photoelectrochemical performance

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