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Bi2MoO6纳米薄膜的制备及其光电性能
  • ISSN号：1000-6818
  • 期刊名称：《物理化学学报》
  • 时间：0
  • 分类：O646[理学—物理化学;理学—化学]
  • 作者机构：[1]清华大学化学系,北京100084
  • 相关基金：国家自然科学基金（20433010,20571047）资助项目
作者： 满毅[1], 宗瑞隆[1], 朱永法[1]
关键词： Bi2MoO6薄膜, 非晶态配合物, 光电化学, 可见光, Bi2MoO6 films, Amorphous complex precursor, Photoelectrochemistry, Visible light
中文摘要：

采用非晶态配合物法在ITO导电玻璃上制备了Bi2MoO6薄膜．采用扫描电子显微镜（SEM）、X射线衍射（XRD）、激光拉曼光谱（LRS）、紫外．可见漫反射谱（DRS）、光电流响应谱、光电转换量子效率（IPCE）等技术研究了Bi2MoO6薄膜的制备工艺、形貌、结构与薄膜光电性能的关系．结果表明，500℃、1h焙烧后的Bi2MoO6薄膜为γ-Bi2MoO6晶相，沿（131）晶面方向生长，薄膜厚度约为69nm．随着焙烧温度的升高和焙烧时间的延长，Bi2MoO6薄膜的平均颗粒度增大，并且在525℃焙烧出现β-Bi2MoO6和γ＇-Bi2MoO6晶相．Bi2MoO6薄膜具有可见光响应活性，在可见光照射下可以产生光电流，优化条件下的Bi2MoO6薄膜在400nm的光电转换量子效率可以达到2．14％．薄膜的光电响应和光电转换量子效率受薄膜形貌及结晶状态影响，可以通过控制薄膜的制备条件来提高薄膜的光电转换量子效率．

英文摘要：

Bi2MoO6 films on ITO glass substrates were prepared from amorphous complex precursor by dip-coating technique. The relationships between conditions of preparation, structures, morphologies and photoelectrochemical properties of Bi2MoO6 films were investigated by using scanning electron microscope （SEM）, X-ray diffraction （XRD）, laser Raman spectroscopy （LRS）, diffuse reflectance spectroscopy （DRS）, photocurrent action curves, and incident photon- to-current conversion efficiency （IPCE）. Bi2MoO6 films prepared at 500 ℃ for I h were γ-Bi2MoO6 phase, and Bi2MoO6 nanoparticles grew along （131） plane. The thickness of the films obtained was about 69 nm. The size of the Bi2MoO6 nanoparticles was increased with rising calcination temperature and extention of calcination time, in addition γ- Bi2MoO6 changed into β-Bi2MoO6 and γ＇-Bi2MoO6 at 525 ℃. Bi2MoO6 films had visible-light response, and detectable photocurrent was generated under the visible-light （A〉400 nm） irradiation. The IPCE of the optimized Bi2MoO6 films was 2.14% at 400 nm. The photocurrent density and IPCE could be controlled by modifying the surface structure of Bi2MoO6 films, which could be achieved by changing the preparation conditions.

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期刊信息
  • 《物理化学学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:北京大学化学与分子工程学院承办
  • 主编：刘忠范
  • 地址：北京大学化学楼
  • 邮编：100871
  • 邮箱：whxb@pku.edu.cn
  • 电话：010-62751724
  • 国际标准刊号：ISSN：1000-6818
  • 国内统一刊号：ISSN：11-1892/O6
  • 邮发代号:82-163
  • 获奖情况:
  • 中文核心期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:24781