Formation of rod-like nanostructure by aggregation of TiO2 nanoparticles with improved performances

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• 作者：WEIJUAN ZHANG ; WENKAI CHANG ; BAOZHEN CHENG ; ZENGHE LI…
• 关键词：Rod ; like nanostructure ; aligned nanoparticle aggregates ; photocatalytic activity ; antibacterial activity ; dye ; sensitized solar cell.
• 刊名：Bulletin of Materials Science
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：38
• 期：6
• 页码：1617-1623
• 全文大小：1,337 KB
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• 作者单位：WEIJUAN ZHANG (1) (2)
  WENKAI CHANG (2) (3)
  BAOZHEN CHENG (1)
  ZENGHE LI (4)
  JUNHUI JI (3)
  YANG ZHAO (2) (4)
  JUN NIE (4)
  
  1. College of Materials Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300222, PR China
  2. China Leather and Footwear Industry Research Institute, Beijing, 100015, PR China
  3. Antimicrobial Materials Testing Center, Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing, 100101, PR China
  4. College of Science, Beijing University of Chemical Technology, Beijing, 100029, PR China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Engineering, general
  
• 出版者：Springer India
• ISSN：0973-7669

文摘

To improve the performance of titanium dioxide (TiO₂)-based devices, many efforts have been made to prepare nanostructures with composite of TiO₂ nanoparticles and nanorods. In this work, a novel rod-like TiO₂ nanostructure was obtained via a controllable hydrolysis process. Morphology and structure analysis showed that the rod-like nanostructure was a well-aligned aggregate of nearly spherical TiO₂ nanoparticles. Rod-like TiO₂ nanoparticle aggregates were fabricated on a primary TiO₂ nanoparticle-based layer without the use of template, and formed a hierarchical TiO₂ composite film together. The photocatalytic activity of the TiO₂ film with rod-like nanoparticle aggregates was evaluated by the degradation of methylene blue. The antibacterial activity of fabricated hierarchical TiO₂ film was assessed against Staphylococcus aureus. The photoelectrochemical property of this film as the photoanode in assemble dye-sensitized solar cell was also tested. Compared with randomly distributed nanoparticle-based TiO₂ film, the hierarchical TiO₂ film exhibited improved performance of photocatalysis, antibacterial activity and photoelectric conversion. Keywords Rod-like nanostructure aligned nanoparticle aggregates photocatalytic activity antibacterial activity dye-sensitized solar cell.