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Title: Enhancement of photoelectric catalytic activity of TiO{sub 2} film via Polyaniline hybridization

Abstract

A Polyaniline (PANI)/TiO{sub 2} film coated on titanium foil was successfully prepared using the sol-gel method followed by a facile chemisorption. Compared with pristine TiO{sub 2}, the photocatalytic (PC) and photoelectrocatalytic (PEC) degradation rates of 2,4-dichlorophenol (2,4-DCP) with the PANI/TiO{sub 2} film were enhanced by 22.2% and 57.5%, respectively. 2,4-DCP can be mineralized more effectively in the presence of PANI/TiO{sub 2} film. The best PEC degradation efficiency of 2,4-DCP with the PANI/TiO{sub 2} film was acquired at an external potential of 1.5 V with a layer of 1 nm thick PANI. The PANI/TiO{sub 2} film was characterized by Raman spectra, Fourier transform infrared spectra (FT-IR), Auger electron spectroscopy (AES), and electrochemical analysis. These results indicated that there was a chemical interaction on the interface of PANI and TiO{sub 2}. This interaction may be of significance to promote the migration efficiency of carriers and induce a synergetic effect to enhance the PC and PEC activities. - Graphical abstract: The effect of PANI content on 2,4-DCP degradation with initial concentration of 50 mg/L, external potential=1.5 V. Inset: degradation rate constants of various PANI/TiO{sub 2} films. Highlights: > Polyaniline/TiO{sub 2} film was prepared using the sol-gel method followed by chemisorption. > Photoelectrocatalytic degradationmore » rate of 2,4-dichlorophenol was enhanced by 57.5%. > The modification of Polyaniline to TiO{sub 2} film caused a rapid charge separation. > Best degradation efficiency was acquired at 1.5 V with 1 nm thick PANI.« less

Authors:
; ;  [1]
  1. Department of Chemistry, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
21580094
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 6; Other Information: DOI: 10.1016/j.jssc.2011.04.001; PII: S0022-4596(11)00169-1; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AUGER ELECTRON SPECTROSCOPY; CHEMISORPTION; EFFICIENCY; FILMS; FOILS; FOURIER TRANSFORMATION; HYBRIDIZATION; INFRARED SPECTRA; INTERACTIONS; LAYERS; PHOTOCATALYSIS; RAMAN SPECTRA; REACTION KINETICS; SOL-GEL PROCESS; TITANIUM; TITANIUM OXIDES; CATALYSIS; CHALCOGENIDES; CHEMICAL REACTIONS; ELECTRON SPECTROSCOPY; ELEMENTS; INTEGRAL TRANSFORMATIONS; KINETICS; METALS; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SORPTION; SPECTRA; SPECTROSCOPY; TITANIUM COMPOUNDS; TRANSFORMATIONS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Citation Formats

Yajun, Wang, Jing, Xu, Weizheng, Zong, and Zhu Yongfa, E-mail: zhuyf@tsinghua.edu.cn. Enhancement of photoelectric catalytic activity of TiO{sub 2} film via Polyaniline hybridization. United States: N. p., 2011. Web. doi:10.1016/j.jssc.2011.04.001.
Yajun, Wang, Jing, Xu, Weizheng, Zong, & Zhu Yongfa, E-mail: zhuyf@tsinghua.edu.cn. Enhancement of photoelectric catalytic activity of TiO{sub 2} film via Polyaniline hybridization. United States. doi:10.1016/j.jssc.2011.04.001.
Yajun, Wang, Jing, Xu, Weizheng, Zong, and Zhu Yongfa, E-mail: zhuyf@tsinghua.edu.cn. Wed . "Enhancement of photoelectric catalytic activity of TiO{sub 2} film via Polyaniline hybridization". United States. doi:10.1016/j.jssc.2011.04.001.
@article{osti_21580094,
title = {Enhancement of photoelectric catalytic activity of TiO{sub 2} film via Polyaniline hybridization},
author = {Yajun, Wang and Jing, Xu and Weizheng, Zong and Zhu Yongfa, E-mail: zhuyf@tsinghua.edu.cn},
abstractNote = {A Polyaniline (PANI)/TiO{sub 2} film coated on titanium foil was successfully prepared using the sol-gel method followed by a facile chemisorption. Compared with pristine TiO{sub 2}, the photocatalytic (PC) and photoelectrocatalytic (PEC) degradation rates of 2,4-dichlorophenol (2,4-DCP) with the PANI/TiO{sub 2} film were enhanced by 22.2% and 57.5%, respectively. 2,4-DCP can be mineralized more effectively in the presence of PANI/TiO{sub 2} film. The best PEC degradation efficiency of 2,4-DCP with the PANI/TiO{sub 2} film was acquired at an external potential of 1.5 V with a layer of 1 nm thick PANI. The PANI/TiO{sub 2} film was characterized by Raman spectra, Fourier transform infrared spectra (FT-IR), Auger electron spectroscopy (AES), and electrochemical analysis. These results indicated that there was a chemical interaction on the interface of PANI and TiO{sub 2}. This interaction may be of significance to promote the migration efficiency of carriers and induce a synergetic effect to enhance the PC and PEC activities. - Graphical abstract: The effect of PANI content on 2,4-DCP degradation with initial concentration of 50 mg/L, external potential=1.5 V. Inset: degradation rate constants of various PANI/TiO{sub 2} films. Highlights: > Polyaniline/TiO{sub 2} film was prepared using the sol-gel method followed by chemisorption. > Photoelectrocatalytic degradation rate of 2,4-dichlorophenol was enhanced by 57.5%. > The modification of Polyaniline to TiO{sub 2} film caused a rapid charge separation. > Best degradation efficiency was acquired at 1.5 V with 1 nm thick PANI.},
doi = {10.1016/j.jssc.2011.04.001},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 6,
volume = 184,
place = {United States},
year = {2011},
month = {6}
}