Enhanced photochemical response of TiO2ZCdSe heterostructured nanowires

Jung Chul Lee, Tae Geun Kim, Heon Jin Choi, Yun Mo Sung

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

High-density single-crystalline TiO2 nanowires (∼50 nm diam) were successfully grown on Ti substrates by chemical vapor deposition at a low temperature of 700 °C and within a remarkably short time period of 5 min. They were combined with CdSe nanocrystals (°5 nm diam) to form TiO 2/CdSe heterotructured nanowires by overcoating the nanowires with the CdSe-containing solution and subsequent annealing at 600 °C. The TiO2/CdSe nanowires showed uniformly distributed CdSe nanocrystals, and high crystallinity of rutile and wurtzite from the TiO2 and the CdSe, respectively. Owing to the heterostructure of the TiO2/ CdSe, they demonstrate almost full visible-range light absorption and thus enhanced photocatalytic activity by charge separation via electron and hole transfer between the CdSe and the TiO2.

Original languageEnglish
Pages (from-to)2588-2593
Number of pages6
JournalCrystal Growth and Design
Volume7
Issue number12
DOIs
Publication statusPublished - 2007 Dec

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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