高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (12): 2246-2252.doi: 10.7503/cjcu20160428

• 物理化学 • 上一篇    下一篇

导电玻璃负载CuO/V2O5复合纳米纤维光电极的制备及光电催化性能

林晓, 李佑稷(), 李铭, 唐宁梅, 李紫琴, 韩志英   

  1. 吉首大学化学化工学院, 吉首 416000
  • 收稿日期:2016-06-13 出版日期:2016-12-10 发布日期:2016-11-18
  • 作者简介:联系人简介: 李佑稷, 男, 博士, 教授, 主要从事纳米材料合成与应用研究. E-mail:bcclyj@163.com
  • 基金资助:
    国家自然科学基金(批准号: 21476095)和湖南省高校科技创新团队支持计划项目资助

Preparation and Photoelectrocatalytic Performance of CuO/V2O5/FTO Composite Nanofibers Electrode

LIN Xiao, LI Youji*(), LI Ming, TANG Ningmei, LI Ziqin, HAN Zhiying   

  1. Department of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China
  • Received:2016-06-13 Online:2016-12-10 Published:2016-11-18
  • Contact: LI Youji E-mail:bcclyj@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21476095) and the Program for Science and Technology Innovative Research Team in Higher Educational Institution of Hunan Province, China

摘要:

以聚乙烯吡咯烷酮(PVP)为高分子模板剂, 乙酰丙酮钒(C15H21O6V)和三水合硝酸铜[Cu(NO3)2·3H2O]为原料, 导电玻璃(FTO)为载体, 结合溶胶-凝胶法和静电纺丝技术制备了前驱体纤维, 经高温焙烧后得到分布均匀、 具有纤维结构的导电玻璃负载的CuO/V2O5复合光电极(CuO/V2O5/FTO). 采用热重-差热分析仪(TG-DTA)、 X射线衍射仪(XRD)、 扫描电子显微镜(SEM)、 透射电子显微镜(TEM)和X射线光电子能谱仪(XPS)等对材料的结构进行表征, 以亚甲基蓝(MB)为目标降解物, 探讨了合成产物的光电催化性能. 结果表明, CuO与V2O5能有效形成异质结构, 其光电催化活性均比纯V2O5有明显提高, 并且改变CuO与V2O5的比例对光电催化性能有较大影响, 其中n(Cu)∶n(V)=1∶1时降解效率最高, 达到96%.

关键词: 静电纺丝, CuO/V2O5/FTO, 复合纳米纤维, 光电催化

Abstract:

CuO/V2O5/FTO composite nanofibers photoelectrode was fabricated by electrospinning method with polyvinyl pyrrolidone(PVP) as fiber skeleton, copper(Ⅱ) nitrate hydrate and vanadium(Ⅳ)-oxy acetylacetonate as raw materials. The structure of the samples was characterized by thermogravimetry-differential thermal analysis(TG-DTA), X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electronic microscopy(TEM) and X-ray photoelectron spectroscopy(XPS). The photoelectrocatalytic performance of the samples was analyzed by the degradation of methylene blue(MB) solution. The results show that the heterojunctions between CuO and V2O5 were formed, and the separation of photogenerated electron-hole pairs on CuO/V2O5/FTO was promoted, which made the degradation rate of MB catalyzed by CuO/V2O5/FTO much higher than that catalyzed by pure V2O5/FTO. The different molar ratios of n(Cu)/n(V) had influence on photoelectrocatalytic activity, and the CuO/V2O5/FTO with n(Cu)/n(V)=1∶1 had the highest catalytic activity(degradation rate of MB was 96%).

Key words: Electrospinning, CuO/V2O5/FTO, Composite Nanofibers, Photoelectrocatalysis

中图分类号: