Fabrication of high aspect ratio and open-ended TiO2 nanotube photocatalytic arrays through electrochemical anodization

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

11 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)415-420
Journal / PublicationAICHE Journal
Volume62
Issue number2
Online published25 Nov 2015
Publication statusPublished - Feb 2016
Externally publishedYes

Abstract

Well-aligned, high aspect-ratio and open-ended TiO2 nanotube arrays secured within a Ti foil (TiO2 nanotubes cartridge) were successfully prepared through the double-sided anodization method. With ∼210 μm of nanotube length, the anodic growth of TiO2 was accelerated and stabilized by the lactic acid-containing ethylene glycol electrolyte. In the absence of lactic acid, the anodization led to detachment of nanotubes from the Ti foil after 5-6 h of high voltage (80 V) anodization. Transmission electron microscope image and Raman spectrum revealed that the as-anodized TiO2 nanotube arrays without annealing treatment were partially crystalline anatase and demonstrated photocatalytic activity in the mineralization of formic acid.

Research Area(s)

  • Anodization, Electrochemical, Flow through, Photocatalyst, TiO2 nanotube

Citation Format(s)

Fabrication of high aspect ratio and open-ended TiO2 nanotube photocatalytic arrays through electrochemical anodization. / Wong, Roong Jien; Liu, Sanly; Ng, Yun Hau et al.
In: AICHE Journal, Vol. 62, No. 2, 02.2016, p. 415-420.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review