Plasma oxidation for achieving supported TiO2 photocatalysts derived from adsorbed TiCl4 using dielectric barrier discharge

At atmospheric pressure and room temperature, dielectric barrier discharge induced plasma oxidation for achieving supported TiO2 photocatalysts derived from TiCl4 adsorbed onto gamma-Al2O3 pellets was studied. The supported TiO2/gamma-Al2O3photocatalysts prepared by a cyclic 'adsorption-dischar...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2007-03, Vol.40 (6), p.1763-1768
Main Authors: Zhang, Xiu-Ling, Nie, Long-Hui, Xu, Yong, Shi, Chuan, Yang, Xue-Feng, Zhu, Ai-Min
Format: Article
Language:English
Subjects:
Electric discharges
Exact sciences and technology
Other gas discharges
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
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Summary:At atmospheric pressure and room temperature, dielectric barrier discharge induced plasma oxidation for achieving supported TiO2 photocatalysts derived from TiCl4 adsorbed onto gamma-Al2O3 pellets was studied. The supported TiO2/gamma-Al2O3photocatalysts prepared by a cyclic 'adsorption-discharge' approach, without requirement of heat treatment, exhibit high activity in the photocatalytic degradation reaction of formaldehyde. The mass spectra and optical emission spectra during O2/Ar discharge for oxidizing the adsorbed-state TiCl4 were measured. The mechanism for the TiO2 formation from adsorbed-state TiCl4 by plasma oxidation was discussed.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/40/6/024