无机材料学报 ›› 2012, Vol. 27 ›› Issue (7): 687-692.DOI: 10.3724/SP.J.1077.2012.11490

• 研究论文 • 上一篇    下一篇

γ-Bi2O3/TiO2复合纤维的制备及光催化性能

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:2011-08-05 修回日期:2011-10-28 出版日期:2012-07-20 网络出版日期:2012-06-06
  • 作者简介:李跃军(1964-), 男, 副教授. E-mail: bclyj@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(50572014, 50972027); 教育部新世纪优秀人才支持计划(NCET-05-0322); 吉林省科技发展计划(201205034)

Preparation and Photocatalytic Properties of γ-Bi2O3/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:2011-08-05 Revised:2011-10-28 Published:2012-07-20 Online:2012-06-06
  • About author:LI Yue-Jun. E-mail: bclyj@yahoo.com.cn
  • Supported by:

    National Natural Science Foundation of China (50572014, 50972027); New Century Excellent Talents in University (05-0322); Development Project of Science and Technology of Jilin Province (201205034)

摘要: 采用静电纺丝技术与溶剂热法相结合制备了γ-Bi2O3/TiO2 复合纤维光催化材料. 利用X射线衍射(XRD)、扫描电镜(SEM)、电子能谱(EDS)、透射电镜(TEM)、高分辨透射电镜(HRTEM)和紫外–可见吸收光谱(UV-Vis)等分析测试手段对材料进行了表征, 并以罗丹明B(RB)的脱色降解为模式反应, 考察了材料的可见光催化性能. 结果表明: γ-Bi2O3纳米片均匀地生长在TiO2纤维上, 形成了具有异质结构的γ-Bi2O3/TiO2复合纤维光催化材料, 其光谱响应范围拓宽至可见光区, 有利于TiO2光生电子和空穴的分离, 增强了体系的量子效率. 与纯TiO2纤维相比可见光催化活性明显提高, 对RB的脱色率达87.8%.

关键词: 静电纺丝, 溶剂热法, γ-Bi2O3 /TiO2复合纤维, 光催化

Abstract: Heterostructured γ-Bi2O3/TiO2 composite fibers were prepared via combination of solvothermal method and electrospinning technique. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscope (EDS), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and UV-Vis absorption spectra were used to characterize heterostructured γ-Bi2O3/TiO2 composite fibers. The photocatalytic properties of the heterostructured samples were evaluated by degrading rhodamine B (RB) under visible light irradiation. The results showed that γ-Bi2O3 nanosheets could evenly grow on the TiO2 fibers surface and thus heterostructured γ-Bi2O3/TiO2 composite fibers were successfully obtained. The absorption range of the as-obtained heterostructured samples were extended to the visible light region. Moreover, the presence of γ-Bi2O3 nanostructures/TiO2 fibers heterostructures was beneficial to separation of photo-generated electrons and holes which enhanced the system’s quantum efficiency. In comparison with that of pure TiO2 nanofibers, the γ-Bi2O3/TiO2 heterostructures have enhanced photocatalytic efficiency under visible light irradiation, and the decolorizing efficiency of RB solution can reach 87.8%.

Key words: electrospinning, solvothermal method, γ-Bi2O3/TiO2 composite fibers, photocatalytic degradation

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