高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (07): 1552-1558.doi: 10.3969/j.issn.0251-0790.2012.07.034

• 物理化学 • 上一篇    下一篇

WO3/TiO2 复合纤维的制备及储能光催化性能

李跃军1,2, 曹铁平2, 邵长路1, 王长华1   

  1. 1. 东北师范大学先进光电子功能材料研究中心, 长春 130024;
    2. 白城师范学院化学系, 白城 137000
  • 收稿日期:2011-08-15 出版日期:2012-07-10 发布日期:2012-07-10
  • 通讯作者: 邵长路, 男, 博士, 教授, 博士生导师, 主要从事功能纳米材料和无机微孔材料研究. E-mail: clshao@nenu.edu.cn E-mail:changlushao@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号: 50972027), 教育部新世纪优秀人才支持计划(批准号: NCET-05-0322)和吉林省科技发展计划(批准号: 201205034)资助.

Preparation and Energy Stored Photocatalytic Properties of WO3/TiO2 Composite Fibers

LI Yue-Jun1,2, CAO Tie-Ping2, SHAO Chang-Lu1, WANG Chang-Hua1   

  1. 1. Centre for Advanced Optoelectronic Functional Material Research, Northeast Normal University, Changchun 130024, China;
    2. Department of Chemistry, Baicheng Normal College, Baicheng 137000, China
  • Received:2011-08-15 Online:2012-07-10 Published:2012-07-10

摘要: 以钛酸正丁酯为前驱体, 采用静电纺丝技术制得了纯锐钛矿TiO2纤维, 并以其为基质, 通过水热法制备了具有异质结构的WO3/TiO2复合纤维. 利用X射线衍射仪(XRD)、 扫描电子显微镜(SEM)、 能量色散光谱仪(EDS)、 透射电子显微镜(TEM)和高分辨透射电子显微镜(HRTEM)等对样品的结构和形貌进行了表征. 以罗丹明B的脱色降解为模型反应, 考察了样品的光催化性能和储能光催化性能. 结果表明, 花状WO3微球包裹在TiO2纤维上, 得到了具有异质结构的WO3/TiO2复合纤维光催化剂. WO3与TiO2复合有利于光生载流子的输运和分离, 增强了体系的量子效率, 提高了光催化活性. WO3/TiO2 复合纤维经光照处理后, 在黑暗条件下显示出储能光催化特性.

关键词: 静电纺丝技术, 水热法, WO3/TiO2复合纤维, 储能, 光催化降解

Abstract: Heterostructured WO3/TiO2 composite fibers were prepared via electrospinning fabrication of anatase fibers by adopting n-butyl titanate as precursors and hydrothermal growth of WO3 nanostructures on anatase fibers substrate. The morphology and structure of WO3/TiO2 composite fibers were characte-rized by X-ray diffraction(XRD), scanning electron microscopy(SEM), energy dispersive X-ray spectroscopy(EDS), transmission electron microscopy(TEM) and high resolution transmission electron microscopy(HRTEM) techniques. The results showed that flower-like WO3 microsphere could evenly grow on the TiO2 fibers surface and thus heterostructured WO3/TiO2 composite fibers were successfully obtained. By employing Rhodamine B degradation as the model reaction, the WO3/TiO2 heterostructures showed enhanced photocatalytic efficiency compared with the bare TiO2 fibers under UV light irradiation. The enhanced photocatalytic efficiency could be ascribed to the promoted electron-hole pairs separation induced by the heterojunction and thus enhanced quantum efficiency. Degradation experiment displays that Rhodamine B can be degraded in darkness by the WO3/TiO2 composite fibers photocatalyst with energy storage degradation activity.

Key words: Electrospinning technique, Hydrothermal method, WO3/TiO2composite fibers, Energy storage, Photocatalytic degradation

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