高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (11): 2122-2124.

• 研究快报 • 上一篇    下一篇

TiO2纳米粒子包覆聚苯乙烯球的结晶性能与表面光电压特性

张明, 高歌, 赵大成, 张丹, 杨敏, 王德军, 刘凤岐   

  1. 吉林大学化学学院, 长春130023
  • 收稿日期:2004-05-28 出版日期:2004-11-24 发布日期:2004-11-24
  • 基金资助:

    国家自然科学基金(批准号:20274014)资助

Crystallization and Surface Photovoltage Properties of Polystyrene Coated by TiO2 Nanoparticles

ZHANG Ming, GAO Ge, ZHAO Da-Cheng, ZHANG Dan, YANG Min, WANG De-Jun, LIU Feng-Qi   

  1. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2004-05-28 Online:2004-11-24 Published:2004-11-24

关键词: TiO2, 杂化微球, 结晶, 表面光电压谱

Abstract: Hybrid microballs with polystyrene cores coated by titania nanoparticles were prepared by miniemulsion polymerization. The crystallization morphology and photovoltage properties of the hybrid particles after calcination were characterized by Scanning Electron Microscope(SEM), X-ray diffraction and surface photovoltage spectra(SPS). The crystal morphology has a critical effect on the threshold. It is found that the materials become prous, the thresholds of TiO2 particles blue-shift with their particle sizes decreasing and crystal phase changing from anatase TiO2 to rutile TiO2. The SPS results showed that the peak height was three times the height of common TiO2 nanoparticles.

Key words: TiO2, Hybrid microballs, Crystallization, Surface photovoltage spectrum(SPS)

中图分类号: