高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (9): 2057.doi: 10.7503/cjcu20130327

• 研究论文: 无机化学 • 上一篇    下一篇

Cu网负载CeO2-TiO2微纳米复合材料(CeO2-TiO2)/Cu的水热制备与性能

戴春爱1,2, 高常锐1, 冯琳1   

  1. 1. 清华大学化学系, 北京 100084;
    2. 北京交通大学理学院, 北京 100044
  • 收稿日期:2013-04-11 出版日期:2013-09-10 发布日期:2013-08-30
  • 作者简介:冯琳,女,博士,副研究员,主要从事功能纳米界面材料研究.E-mail:fl@mail.tsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:51173099);北京交通大学基本科研业务费(批准号:2013JBM093);高等学校青年骨干教师国内访问学者项目资助.

Hydrothermal Preparation and Performance of CeO2-TiO2 Micro- and Nano-composites Deposited on Copper Mesh Film

DAI Chun-Ai1,2, GAO Chang-Rui1, FENG Lin1   

  1. 1. Department of Chemistry, Tsinghua University, Beijing 100084, China;
    2. School of Science, Beijing Jiaotong University, Beijing 100044, China
  • Received:2013-04-11 Online:2013-09-10 Published:2013-08-30

摘要:

以Cu网为载体, Ti(OBu)4和 Ce(NO3)3·6H2O为原料, Na3PO4·12H2O为矿化剂, 采用一步水热法制备了多种不同形貌的Cu网负载CeO2-TiO2微纳米复合材料(CeO2-TiO2)/Cu. 采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和紫外-可见漫反射分光光度计(UV-Vis DRS)对材料的形貌、结构及光吸收特性进行了表征, 通过测试接触角表征了材料的浸润性. 以20 μmol/L亚甲基蓝(MB)溶液为目标降解物, 测试了材料在可见光照射下的催化性能. 结果表明, 制备的TiO2为锐钛矿型, CeO2为方铈矿型; CeO2晶体比TiO2晶体更易负载于Cu网; 改变制备过程中Ce(NO3)3·6H2O的用量、Na3PO4·12H2O浓度、水热反应时间及温度可实现(CeO2-TiO2)/Cu的形貌调控; (CeO2-TiO2)/Cu显示出超亲水性及可见光催化活性.

关键词: Cu网, CeO2-TiO2, 水热法, 形貌, 超亲水性, 可见光催化

Abstract:

CeO2-TiO2 micro- and nano-composites deposited on copper mesh film[(CeO2-TiO2)/Cu] were prepared with tetrabutyl titanate and cerium nitrate as raw materials, trisodium phosphate as mineralizer via one step facile hydrothermal method. The prepared materials were characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD) and UV-Vis diffusion reflection spectrometry. The water wettabi-lity was tested using contact angle meter. Visual-light-activation of (CeO2-TiO2)/Cu was investigated by degrading methylene blue(MB, 20 μmol/L) under visible light irradiation. The results suggested that anatase TiO2 dioxide and cerianite CeO2 were prepared; compared with TiO2, CeO2 was easier to deposit on copper mesh film; the morphologies and structures of (CeO2-TiO2)/Cu were significantly affected by Ce(NO3)3·6H2O content, Na3PO4 concentration, reaction time and reaction temperature. (CeO2-TiO2)/Cu displayed superhydrophilic property and visual-light photocatalytic performance.

Key words: Copper mesh, Cerium dioxide-titanium dioxide, Hydrothermal method, Morphology, Superhydrophilicity, Visual-light photocatalysis

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