Selective electrodeposition of Ni into the intertubular voids of anodic TiO2 nanotubes for improved photocatalytic properties

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Fengxia Liang
  • Jie Zhang
  • Lingxia Zheng
  • Chun-Kwan Tsang
  • Hui Li
  • Shiwei Shu
  • Hua Cheng

Detail(s)

Original languageEnglish
Pages (from-to)405-410
Journal / PublicationJournal of Materials Research
Volume28
Issue number3
Publication statusPublished - 14 Feb 2013

Abstract

We report on Ni-modified TiO2 nanotubes with improved photocatalytic properties. Using the as-anodized TiO2 nanotubes as templates, Ni was electrodeposited using pulsed current waveforms. It was found that the Ni deposition was first initiated at the bottoms of the intertubular voids and then grew upward, resulting in a Ni/TiO2 coaxial nanostructure with Ni wrapping around the TiO2 nanotubes. Moreover, the tube inside was kept empty and tube openings unclogged for the fabricated Ni/TiO2 nanocomposites. Further photodegradation tests using methyl red revealed that the fabricated Ni/TiO2 nanocomposites possess higher photocatalytic efficiency than the counterparts of pristine TiO 2 nanotubes. The observed improved photocatalytic efficiency is ascribed to the Schottky barriers formed between Ni and TiO2. Copyright © Materials Research Society 2012.

Citation Format(s)

Selective electrodeposition of Ni into the intertubular voids of anodic TiO2 nanotubes for improved photocatalytic properties. / Liang, Fengxia; Zhang, Jie; Zheng, Lingxia; Tsang, Chun-Kwan; Li, Hui; Shu, Shiwei; Cheng, Hua; Li, Yang Yang.

In: Journal of Materials Research, Vol. 28, No. 3, 14.02.2013, p. 405-410.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal