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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：工业催化
办公地点：西部校区化工实验楼B321
联系方式：大连市高新区凌工路2号大连理工大学西部校区B321
电子邮箱：ajwang@dlut.edu.cn
Hydrothermal synthesis of well-dispersed ultrafine N-doped TiO2 nanoparticles with enhanced photocatalytic activity under visible light
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论文类型：期刊论文
发表时间：2010-03-01
发表刊物：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
收录刊物：SCIE、EI
卷号：71
期号：3
页面范围：156-162
ISSN号：0022-3697
关键字：Nanostructures; Optical materials; Chemical synthesis; Optical properties; Surface properties
摘要：Ultrafine nitrogen-doped TiO2 nanoparticles with narrow particle size distribution, good dispersion, and high surface area were synthesized in the presence of urea and PEG-4000 via a hydrothermal procedure. TEM observation, N-2 adsorption, XRD, UV-vis spectroscopy, the Raman spectroscopy and XPS analysis were conducted to characterize the synthesized TiO2 particles. The synthesized TiO2 particles were a mixture of 49.5% anatase and 50.5% rutile with a size of around 5 nm. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive Brilliant Blue KN-R under both UV and visible light. The synthesized TiO2 particles showed much higher photocatalytic activity than a commercial P25 TiO2 powder under both UV and visible light irradiations. The high performance is associated to N doping, the reduced particle size, good dispersion, high surface area, and a quantum size effect. (C) 2009 Elsevier Ltd. All rights reserved.