Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-doped titania

被引：52

作者：

Liu, Jianjun ^{[1
]}

Qin, Wei ^{[1
]}

Zuo, Shengli ^{[1
]}

Yu, Yingchun ^{[1
]}

Hao, Zhengping ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, Fac Sci, Beijing 100029, Peoples R China

[2] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 163卷 / 01期

关键词：

Nitrogen-doped titania; Solvothermal synthesis; Phase transition; Photocatalysis; Methyl orange; LIGHT PHOTOCATALYSIS; NANOCRYSTALLINE BROOKITE; TIO2; RUTILE; ANATASE; PARTICLES; OXIDATION; GROWTH;

D O I：

10.1016/j.jhazmat.2008.06.086

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nitrogen-doped titania nanoparticles consisting of pure anatase, pure rutile and bicrystallites (anatase + rutile and anatase + brookite) have been prepared in TiCl3-HMT (hexamethylene tetramine)alcohol solution under solvothermal process. The effect of the solvent type and amount of HMT as pH adjuster on the phase composition of titania and its visible photocatalytic activity for degradation to MO (methyl orange) was investigated. It is found that anatase gradually transferred to rutile with increase of carbon chain using methanol, ethanol, 1-propanol and 1-butanol as solvent. The pure anatase formed at the pH value of 1-2, while bicrystalline titania (anatase + rutile and anatase + brookite) at that of 7-10 in the presence of methanol. The bicrystalline (anatase + brookite) titania have the best visible photocatalytic activity among all the samples. The -(NO) and -(NH) dopants with an N (1s) binding energy of 400 eV may have positive effects on the visible light photocatalytic activity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：273 / 278

页数：6

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