Synthesis amorphous TiO2 with oxygen vacancy as carriers transport channels for enhancing photocatalytic activity

被引：53

作者：

Jia, Tao ^{[1
]}

Zhang, Jing ^{[1
]}

Wu, Jiang ^{[1
,2
]}

Wang, Daolei ^{[1
]}

Liu, Qizhen ^{[3
]}

Qi, Yongfeng ^{[4
]}

Hu, Bin ^{[5
]}

He, Ping ^{[1
]}

Pan, Weiguo ^{[1
]}

Qi, Xuemei ^{[1
]}

机构：

[1] Shanghai Univ Elect Power, Coll Energy & Mech Engn, Shanghai 200090, Peoples R China

[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China

[3] Shanghai Environm Monitoring Ctr, Shanghai 200030, Peoples R China

[4] Yangzhou Univ, Sch Hydraul Energy & Power Engn, Yangzhou 225127, Jiangsu, Peoples R China

[5] Shanghai Jiao Tong Univ, Peoples Hosp 9, Shanghai 200011, Peoples R China

来源：

MATERIALS LETTERS | 2020年 / 265卷

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

Amorphous TiO2; Specific surface area; Defects; Oxygen vacancy; Carriers transport channels; Oxidation; HETEROJUNCTIONS; WATER;

D O I：

10.1016/j.matlet.2020.127465

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An amorphous phase TiO2 was fabricated via a fast and simple hydrolysis method and it was characterized with XRD, TEM, BET, UV-Vis, XPS and EPR. The as-prepared amorphous TiO2 has a specific surface area record-breaking 100 times that of crystal TiO2. The results show that the as-samples had better photocatalytic property, which was evaluated for gas-phase Hg-0 oxidation under LED light, and photocatalytic efficiency reached up to 40%, which is 1.4 times that of commercial P25. It can be mainly attributed to the large specific surface area of amorphous TiO2 providing more reactive sites and its surface oxygen vacancies as carriers transport channels. (C) 2020 Elsevier B.V. All rights reserved.

引用

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