Int. J. of Nanomanufacturing   »   2013 Vol.9, No.3/4

 

 

Title: Photocatalytic performance of carbonaceous TiO2 nanotube arrays for degradation methyl orange dye under UV light

 

Authors: Xuelai Wang; Kan Yu; Hao Xie; Baoshun Liu; Xiujian Zhao

 

Addresses:
State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
School of Material Sciences and Engineering, Wuhan University of Technology, Wuhan 430070, China
State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
School of Material Sciences and Engineering, Wuhan University of Technology, Wuhan 430070, China
State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China

 

Abstract: Carbon-doped TiO2 nanotube arrays (TNAs) were prepared from carbonaceous Ti foils by anodisation in a mixed electrolyte of glycerol and water. The photocatalytic ability can be increased by applying an external positive bias. Enhancing acidity of the pending solution can further accelerate the degradation rate. However, falcate and annular scraps were observed on the surface of TNAs after photoelectrodegradation experiments. XPS analysis indicated that carbon ions were positioned in interstitial site of the catalyst and the carbon content in TNAs decreased following the degradation process. The acid environment can increase the photocatalytic activity; this will damage the C-TNAs greatly. The carbon content decrease from 18.47 at. % to approximate 6 at. % after PEC processes, indicating that the carbon elements is removed from carbonaceous C-TNAs during PEC.

 

Keywords: TiO2 nanotube arrays; anodisation; morphology; photoelectrocatalysis; surface composition; carbon doping; nanotechnology; titania; acidity; photocatalysis; carbonaceous titanium foils; degradation; methyl orange dye; UV light; ultraviolet light.

 

DOI: 10.1504/IJNM.2013.056066

 

Int. J. of Nanomanufacturing, 2013 Vol.9, No.3/4, pp.395 - 406

 

Submission date: 15 Jan 2013
Date of acceptance: 21 Feb 2013
Available online: 30 Aug 2013

 

 

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