引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 272次   下载 263 本文二维码信息
码上扫一扫!
分享到: 微信 更多
纤维状TiO2/BiVO4异质结的高可见光光催化性能
马占营*,李小博,周彩华,邓玲娟,范广
作者单位E-mail
马占营* 咸阳师范学院化学与化工学院, 咸阳 712000 mazhanying@163.com 
李小博 咸阳师范学院化学与化工学院, 咸阳 712000  
周彩华 咸阳师范学院化学与化工学院, 咸阳 712000  
邓玲娟 咸阳师范学院化学与化工学院, 咸阳 712000  
范广 咸阳师范学院化学与化工学院, 咸阳 712000  
摘要:
关键词:  
DOI:10.1063/1674-0068/30/cjcp1609175
分类号:
基金项目:This work was supported by the Scientific Research Program Funded by Shaanxi Provincial Education Department (No.2013JK0690), Fundamental Research Funds of Xianyang Normal University (No.14XSYK011, No.12XSYK025), Shaanxi Province Natural Science Foundation (No.2015JQ5188)
TiO2/BiVO4, a Heterojuncted Microfiber with Enhanced Photocatalytic Performance for Methylene Blue under Visible Light Irradiation
Zhan-ying Ma*,Xiao-bo Li,Cai-hua Zhou,Ling-juan Deng,Guang Fan
Abstract:
Novel TiO2/BiVO4 microfiber heterojunctions were constructed using cotton as biomorphic templates. The as-synthesized samples were characterized by scanning electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectra and photocatalytic experiment. The morphology of the as-synthesized TiO2/BiVO4 composites was consisted of a large quantity of microfiber structures with diameter from 2.5 μm to 5 μm, and the surface of samples became more coarse and compact with the increase of weight ratio of TiO2. The TiO2/BiVO4 samples with proper content (10.00wt%) showed the highest pho-tocatalytic degradation activity for methylene blue (MB) degradation among all the samples under visible light, and 88.58%MB could be degraded within 150 min. The enhancement of photocatalytic activity was mainly attributed to the formation of n-n heterojunction at the contact interface of TiO2 and BiVO4, which not only narrowed the band gap of BiVO4 for extending the absorption range of visible light, but also promoted the transfer of charge carriers across interface. A possible photodegradation mechanism of MB in the presence of TiO2/BiVO4 microfibrous photocatalyst was proposed.
Key words:  TiO2/BiVO4  Microfiber  Visible-light-response  Photocatalysis