Photoelectrochemical characterization of hydrogenated TiO2 nanotubes as photoanodes for sensing applications

Li, Sheng, Qiu, Jingxia, Ling, Min, Peng, Feng, Wood, Barry and Zhang, Shanqing (2013) Photoelectrochemical characterization of hydrogenated TiO2 nanotubes as photoanodes for sensing applications. ACS Applied Materials and Interfaces, 5 21: 11129-11135. doi:10.1021/am403325a


Author Li, Sheng
Qiu, Jingxia
Ling, Min
Peng, Feng
Wood, Barry
Zhang, Shanqing
Title Photoelectrochemical characterization of hydrogenated TiO2 nanotubes as photoanodes for sensing applications
Formatted title
Photoelectrochemical characterization of hydrogenated TiO2 nanotubes as photoanodes for sensing applications
Journal name ACS Applied Materials and Interfaces   Check publisher's open access policy
ISSN 1944-8244
1944-8252
Publication date 2013-11-01
Year available 2013
Sub-type Article (original research)
DOI 10.1021/am403325a
Volume 5
Issue 21
Start page 11129
End page 11135
Total pages 7
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2014
Language eng
Formatted abstract
In this work, hydrogenated TiO2 nanotubes (H-TNTs) electrodes were successfully fabricated via the anodization of a titanium sheet followed by a hydrogenation process. Oxygen vacancies were induced in the crystalline structure of TiO2 nanotubes (TNTs) as shallow donors that enhance the electronic conductivity of the TNTs. This improvement in the electronic conductivity and photoelectrocatalytic (PEC) performance was confirmed and evaluated by a photoelectrochemical characterization. Most importantly, the H-TNTs electrode was able to degrade potassium hydrogen phthalate (strong adsorbent) and glucose (weak adsorbent) indiscriminately. The corresponding photocurrents at the H-TNTs were 2-fold greater than that of the TNTs samples for the same concentrations of the organic compounds. This suggests that the H-TNTs electrode can be a promising sensor for the PEC determination of individual organic compounds or as an aggregative parameter of organic compounds (e.g., chemical oxygen demand).
Keyword hydrogenation
nanotubes
oxygen vacancies
photoelectrocatalysis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Centre for Microscopy and Microanalysis Publications
 
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