One-step electrochemical synthesis and visible-light photocatalytic activities of bismuth titanate coatings: Effect of voltage

被引：8

作者：

Dai, Hui ^{[1
]}

Song, Zuwei ^{[1
]}

机构：

[1] Qingdao Agr Univ, Sch Chem & Pharmaceut Sci, Qingdao 266109, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 01期

关键词：

Films; Electrochemical synthesis; Bi12TiO20; Photocatalysis; TIO2; COATINGS; BI12TIO20; OXIDATION; FILMS;

D O I：

10.1016/j.ceramint.2014.08.090

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanostructured Bi12TiO20 coatings with superior photocatalytic property were controllably fabricated on bismuth substrates by one-step electrochemical method in the alkali electrolytes. It was found that the high voltage spark, which initiated the transformation of Bi2O3 precursor generated at low voltage to sillenite type Bi12TiO20, dominated the formation of bismuth titanate coating. Varying the deposition voltage can effectively tailor the crystallinity, morphology and optical property of the coatings. Bi12TiO20 coating consisting of spherical particles of ca. 30 nm in size and micropores of ca. 100 nm in diameter was obtained at voltage 80 V, exhibiting enhanced visible spectrum absorption and higher photocatalytic ability compared to pure TiO2 films prepared with similar electrochemical method. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：853 / 857

页数：5

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