Dependence of surface atomic arrangement of titanium dioxide on metallic nanowire nucleation by thermally assisted photoreduction

Hsien Tse Tung, Jenn Ming Song, Shih Wei Feng, Changshu Kuo, In-Gann Chen

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Through studying the optical, electrical and photocatalytic properties of anatase TiO2 films with different preferred orientations, (101) and (004), this study clarified the relationship between the formation of metallic nanowires by thermally assisted photoreduction process and surface atomic bonding conditions of TiO2. Experimental results show that the (101) anatase films which yielded much more Ag nanowires than the (004) oriented films and exhibited more complex superficial atomic bonding, which could be demonstrated by the Gaussian bands in photoluminescence spectra. This might lead to higher carrier concentration and mobility, as well as longer life time for photo-exited electrons and consequently a greater photocatalytic activity for reducing metallic ions. The fact that the anatase (101) surface acted as the preferred nucleation sites for Ag nanowires was supported by high resolution transmission electron microscopy lattice image of a TiO2 nanofiber where an Ag nanowire was grown.

Original languageEnglish
Pages (from-to)740-744
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume12
Issue number3
DOIs
Publication statusPublished - 2010 Jan 8

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Dependence of surface atomic arrangement of titanium dioxide on metallic nanowire nucleation by thermally assisted photoreduction'. Together they form a unique fingerprint.

Cite this