Research Paper

Journal of Nanoparticle Research

, Volume 11, Issue 8, pp 2153-2162

Facile fabrication, characterization, and enhanced photoelectrocatalytic degradation performance of highly oriented TiO2 nanotube arrays

  • Qidong ZhaoAffiliated withKey Laboratory of Industrial Ecology and Environmental Engineering (MOE) and State Key Laboratory of Fine Chemical, School of Environmental and Biological Science and Technology, Dalian University of Technology
  • , Xinyong LiAffiliated withKey Laboratory of Industrial Ecology and Environmental Engineering (MOE) and State Key Laboratory of Fine Chemical, School of Environmental and Biological Science and Technology, Dalian University of TechnologyDepartment of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Email author 
  • , Ning WangAffiliated withKey Laboratory of Industrial Ecology and Environmental Engineering (MOE) and State Key Laboratory of Fine Chemical, School of Environmental and Biological Science and Technology, Dalian University of Technology
  • , Yang HouAffiliated withKey Laboratory of Industrial Ecology and Environmental Engineering (MOE) and State Key Laboratory of Fine Chemical, School of Environmental and Biological Science and Technology, Dalian University of Technology
  • , Xie QuanAffiliated withKey Laboratory of Industrial Ecology and Environmental Engineering (MOE) and State Key Laboratory of Fine Chemical, School of Environmental and Biological Science and Technology, Dalian University of Technology
  • , Guohua ChenAffiliated withDepartment of Chemical and Biological Engineering, The Hong Kong University of Science and Technology

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Highly ordered TiO2 nanotube arrays were successfully fabricated using ethanol and water mixture electrolytes (40 vol% ethanol and 0.2 wt% hydrofluoric acid) by a facile electrochemical anodization method. The as-prepared nanotube arrays were grown perpendicular to the titanium substrate with about 90 nm in diameter, 20 nm in wall thickness, and around 500 nm in length. The formation mechanism of the samples is briefly discussed. A blue shift in the spectrum of UV–Vis absorption was observed with respect to a piece of the sol–gel derived TiO2 film. Moreover, photocurrent response and photoelectrocatalytic degradation of methyl orange under ultraviolet light irradiation were adopted to evaluate the photoelectrocatalytic properties of the TiO2 nanotube arrays. We demonstrate that the highly ordered TiO2 nanotube arrays possess much better photoelectrocatalytic activity than the sol–gel derived TiO2 film and good stability.

Keywords

Titania Nanotube Photocurrent Photoelectrocatalytic degradation Nanomanufacturing