Enhanced optical absorption and photocatalytic activity of Cu/N-codoped TiO2 nanocrystals

被引：33

作者：

Wang, S. ^{[1
]}

Yang, X. J. ^{[1
]}

Jiang, Q. ^{[1
]}

Lian, J. S. ^{[1
]}

机构：

[1] Jilin Univ, Coll Mat Sci & Engn, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2014年 / 24卷

关键词：

Cu/N codoping; Nanoparticles; Photocatalysis; Sol-gel; Titanium oxide; NITROGEN-DOPED TIO2; VISIBLE-LIGHT ABSORPTION; ANATASE; DEGRADATION; PROPERTY; BLUE;

D O I：

10.1016/j.mssp.2014.03.029

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Cu/N-codoped TiO2 nanoparticles were prepared by sol-gel technique. Their structure, surface chemical composition, and optical absorption were characterized. All as-prepared samples consisted of the anatase phase. It was found that Cu atoms replaced Ti atom sites, and N atoms occupied the O atom sites and interstitial sites in the TiO2 lattice. The optical absorption results reveal that Cu/N codoping could greatly enhance the absorption of TiO2 in the entire visible region, leading to a decrease in the band-gap energy of TiO2. It also significantly enhanced the solar-driven catalytic activity of TiO2 in the degradation of methylene blue in solution. The sample 2.0 at% Cu/N-codoped TiO2 displayed the highest solar-driven catalytic efficiency among all tested samples. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：247 / 253

页数：7

共 32 条

[1] Enhanced photoelectrochemical responses of ZnO films through Ga and N codoping [J].