[1]刘如东,薛秀玲.纳米TiO2-xNx光催化薄膜的制备及其性能表征[J].华侨大学学报(自然科学版),2010,31(4):438-442.[doi:10.11830/ISSN.1000-5013.2010.04.0438]
　LIU Ru-dong,XUE Xiu-ling.Preparation and Characterization of Nitrogen-Doped Nano-TiO2 Photocatalytic Film[J].Journal of Huaqiao University(Natural Science),2010,31(4):438-442.[doi:10.11830/ISSN.1000-5013.2010.04.0438]
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纳米TiO2-xNx光催化薄膜的制备及其性能表征()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第31卷
期数:
2010年第4期
页码:
438-442
栏目:
出版日期:
2010-07-20

文章信息/Info

Title:
Preparation and Characterization of Nitrogen-Doped Nano-TiO2 Photocatalytic Film
文章编号:
1000-5013(2010)04-0438-05
作者:
刘如东; 薛秀玲
华侨大学化工学院
Author(s):
LIU Ru-dong;  XUE Xiu-ling
College of Chemical Engineering, Huaqiao University, Quanzhou 362021, China
关键词:
TiO2-xNx;  薄膜;  可见光;  光催化;  溶胶-凝胶法
Keywords:
TiO2-xNx;  film;  visible light;  photocatalysis;  sol-gel method
分类号:
O643.36
DOI:
10.11830/ISSN.1000-5013.2010.04.0438
文献标志码:
A
摘要:
采用溶胶-凝胶法制备TiO2溶胶,负载于玻璃微珠表面,并采用NH3气氛焙烧法制得掺氮纳米TiO2薄膜.运用X射线粉末衍射仪、扫描电镜和紫外-可见漫反射吸收光谱等技术,考察不同焙烧温度和负载次数对掺氮的TiO2样品性能的影响.研究结果表明,350,400,450℃热处理的样品的晶相为锐钛矿相,而在500℃时开始出现金红石相,且随温度的进一步升高,金红石相的含量逐渐增多; 掺氮的TiO2样品具有可见光吸收性能,450℃热处理的样品达到最佳,其吸收边红移至约720 nm.另外,薄膜的厚度对样品的光催化性能影响显著,负载3次后,样品对罗丹明B的光催化活性最高.
Abstract:
The TiO2 sol was prepared by sol-gel method and then coated on glass microballoons surface.Nitrogen-doped nano-TiO2 films were prepared by sintering in a NH3 atmosphere with precursors.The effects of different sintering temperature and times of coating on the properties of samples were charactertized by XRD,SEM and UV-Vis diffuse reflectance spectroscopy,etc.The results reveals as follows: XRD patterns indicated that crystalline phase of the samples sintered at 350 ℃,400 ℃ and 450 ℃ are anatase.When sintered beyond 500 ℃,rutile TiO2 was produced and increased with the heating temperature.The UV-Vis diffuse response spectroscopy showed that all of the nitrogen-doped samples Absorbd visible light obviously.The sample sintered at 450 ℃ exhibited a comparative excellent Absorption property,which has red-shifted well into visible region up to 720 nm.In addition,experimental results indicated that the thickness of the films had a significant effect on its photocatalytic performance.After coated three times,the sample showed the highest activity towards RhB degradation.

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备注/Memo

备注/Memo:
福建省青年科技人才创新项目(2005J029)
更新日期/Last Update: 2014-03-23