Direct Growth of ZnO Nanocrystals onto the Surface of Porous TiO 2 Nanotube Arrays for Highly Efficient and Recyclable Photocatalysts

Hui Ying Yang, Siu Fung Yu, Shu Ping Lau, Xiwang Zhang, Darren Delai Sun, Guo Jun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

101 Citations (Scopus)

Abstract

ZnO nanocrystal-coated, vertically oriented, porous TiO2 nanotube arrays (see image) are used as efficient and low-cost photocatalysts. The exposed surface area and contact area are maximized to achieve high-efficiency photocatalytic decomposition via a heterojunction effect. The configuration of vertically aligned nanotube arrays also allows the diffusion of reactants through multiple pathways to enhance light harvest.
Original languageEnglish
Pages (from-to)2260-2264
Number of pages5
JournalSmall
Volume5
Issue number20
DOIs
Publication statusPublished - 16 Oct 2009

Keywords

  • Nanocrystals
  • Nanotubes
  • Photocatalysis
  • Titanium oxide
  • Zinc oxide

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Engineering (miscellaneous)

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