Effects of Fe content on photocatalytic activity of CaTiO3-Fex

被引：9

作者：

Han, Chong ^{[1
]}

Yang, He ^{[1
]}

Xue, Xiang-xin ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met & Mat, Shenyang 110819, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 10期

基金：

中国国家自然科学基金;

关键词：

CaTiO3-Fe-x; methylene blue; photocatalytic activity; kinetics; DOPED TIO2; THIN-FILMS; DRIVEN; DEGRADATION; FABRICATION;

D O I：

10.1016/S1003-6326(14)63463-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

CaTiO3-Fe-x was characterized by X-ray diffractometry, scanning electron microscopy equipped with an energy dispersive spectrometry system, Fourier transform infrared spectra, and UV-visible spectra. Effects of Fe content on photocatalytic activity of CaTiO3-Fe-x were investigated through measuring photocatalytic degradation rate of methylene blue. The results show that chemical compositions of CaTiO3-Fe-x remained unchanged with increasing Fe content from 0 to 4.745%. However, the light absorption ability of CaTiO3-Fe-x exhibited a significant increase with increasing Fe content. Photocatalytic degradation of methylene blue over CaTiO3-Fe-x followed the first-order reaction kinetics. Based on changes of the concentration of methylene blue and its degradation kinetics, CaTiO3-Fe-0.474% has shown to have optimal photocatalytic activity. The degradation rate of methylene blue over CaTiO3-Fe-0.474% was almost 100% under UV-visible light irradiation for 3.0 h. The k(obs) of methylene blue over CaTiO3-Fe-0.474% was 1.33 h(-1) and was 7 times that over CaTiO3-Fe-0.

引用

页码：3215 / 3220

页数：6

共 20 条

[1] The gas-phase photocatalytic mineralization of benzene over visible-light-driven Bi2WO6@C microspheres [J].

Chen, Yilin ;

Cao, Xiaoxin ;

Kuang, Jidong ;

Chen, Zhi ;

Chen, Jingling ;

Lin, Bizhou .

CATALYSIS COMMUNICATIONS, 2010, 12 (04) :247-250

[2] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[3]

[韩冲 Han Chong], 2010, [环境化学, Environmental Chemistry], V29, P831

[4] Controlled synthesis of the ZnWO4 nanostructure and effects on the photocatalytic performance [J].

Jie Lin ;

Jun Lin ;

Yongfa Zhu .

INORGANIC CHEMISTRY, 2007, 46 (20) :8372-8378

[5] Fabrication of high performance thin films from metal fluorocomplex aqueous solution by the liquid phase deposition [J].

Ko, HYY ;

Mizuhata, M ;

Kajinami, A ;

Deki, S .

JOURNAL OF FLUORINE CHEMISTRY, 2003, 120 (02) :157-163

[6] Supercritical preparation of a highly active S-doped TiO2 photocatalyst for methylene blue mineralization [J].

Li, Hexing ;

Zhang, Xinyu ;

Huo, Yuning ;

Zhu, Jian .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2007, 41 (12) :4410-4414

[7] Structural, photophysical and photocatalytic properties of new Bi2SbVO7 under visible light irradiation [J].

Luan, Jingfei ;

Pan, Bingcai ;

Paz, Yaron ;

Li, Yongmei ;

Wu, Xiaoshan ;

Zou, Zhigang .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009, 11 (29) :6289-6298

[8] Low-temperature deposition of TiO2 thin films with photocatalytic activity from colloidal anatase aqueous solutions [J].

Peiró, AM ;

Peral, J ;

Domingo, C ;

Domènech, X ;

Ayllón, JA .

CHEMISTRY OF MATERIALS, 2001, 13 (08) :2567-2573

[9] Solvothermal Synthesis and Photocatalytic Properties of Nitrogen-Doped SrTiO3 Nanoparticles [J].

Sulaeman, Uyi ;

Yin, Shu ;

Sato, Tsugio .

JOURNAL OF NANOMATERIALS, 2010, 2010

[10] Preparation of SrTiO3-supported TiO2 photocatalyst [J].

Tsumura, Tomoki ;

Sogabe, Kazuo ;

Toyoda, Masahiro .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2009, 157 (1-3) :113-115

← 1 2 →