高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (4): 822.

• 研究论文 • 上一篇    下一篇

SnO2/TiO2复合纳米纤维的制备及光催化性能

李跃军1,2,曹铁平1,2,王长华1,邵长路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:2010-08-20 修回日期:2010-11-24 出版日期:2011-04-10 发布日期:2011-03-09
  • 通讯作者: 邵长路 E-mail:bclyj@yahoo.com.cn
  • 基金资助:

    教育部新世纪优秀人才支持计划(批准号:  NCET-05-0322)和国家自然科学基金(批准号:  50572014, 50972027)资助.

Fabrication and Enhanced Photocatalytic Properties of Heterostructures SnO2/TiO2 Composite Nanofibers

LI Yue-Jun1,2, CAO Tie-Ping1,2, WANG Chang-Hua1, SHAO Chang-Lu1*   

  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:2010-08-20 Revised:2010-11-24 Online:2011-04-10 Published:2011-03-09
  • Contact: SHAO Chang-Lu E-mail:bclyj@yahoo.com.cn
  • Supported by:

    教育部新世纪优秀人才支持计划(批准号:  NCET-05-0322)和国家自然科学基金(批准号:  50572014, 50972027)资助.

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被引次数

118

摘要： 采用静电纺丝技术，以聚乙烯吡咯烷酮和钛酸正丁酯为前驱体，制得锐钛矿相TiO2纳米纤维。以TiO2纳米纤维为模板，通过水热合成法，制备了具有异质结构的SnO2/TiO2复合纳米纤维。利用扫描电镜(SEM)、X射线能量色散光谱（EDS）、透射电镜(TEM)和X射线衍射(XRD)等分析测试手段对其形貌和结构进行了表征，结果表明，SnO2纳米粒子均匀地生长在TiO2纳米纤维表面，形成了异质结构的SnO2/TiO2复合纳米纤维材料。通过改变反应物浓度，能有效地实现SnO2/TiO2复合纳米纤维的可控合成。以罗丹明B为模拟污染物，考察了SnO2/TiO2复合纳米纤维的光催化性能，与纯TiO2纳米纤维相比光催化活性明显提高，初步探讨了光催化反应机理。

关键词: SnO2/TiO2 复合纳米纤维, 静电纺丝技术, 水热合成, 光催化, 可控合成

Abstract: Heterostructured SnO2/TiO2 composite nanofibers were prepared via (1) electrospinning fabrication of anatase nanofibers by adopting Polyvinylpyrrolidone (PVP) and n-butyl titanate as precursors and (2) hydrothermal growth of SnO2 nanostructures on anatase nanofibers substrate. The morphology and structure of SnO2/TiO2 composite nanofibers were characterized by scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD) analysis. The results showed that SnO2 nanoparticles could evenly grow on the TiO2 nanofibers surface and thus heterostructured SnO2/TiO2 composite materials were successfully obtained. By employing rhodamine B degradation as the model reaction, we found that the SnO2/TiO2 heterostructures showed enhanced photocatalytic efficiency compared with the bare TiO2 nanofibers under UV light irradiation. Last, the mechanism for the enhancement of photocatalytic activity of heterostructured nanofibers was discussed.

Key words: SnO2/TiO2 composite nanofibers, Electrospinning technique, Hydrothermal method, Photocatalytic degradation, Controlled synthesis

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