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Photocatalytic Activity and Characterization of Carbon-Modified Titania for Visible-Light-Active Photodegradation of Nitrogen Oxides
Joint Authors
Lu, Chun-Mei
Lin, Yu-Ming
Wang, I-Kai
Huang, Chun-Hung
Source
International Journal of Photoenergy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-08
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
A variety of carbon-modified titania powders were prepared by impregnation method using a commercial available titania powder, Hombikat UV100, as matrix material while a range of alcohols from propanol to hexanol were used as precursors of carbon sources.
Rising the carbon number of alcoholic precursor molecule, the modified titania showed increasing visible activities of NOx photodegradation.
The catalyst modified with cyclohexanol exhibited the best activities of 62%, 62%, 59%, and 54% for the total NOx removal under UV, blue, green, and red light irradiation, respectively.
The high activity with long wavelength irradiation suggested a good capability of photocatalysis in full visible light spectrum.
Analysis of UV-visible spectrum indicated that carbon modification promoted visible light absorption and red shift in band gap.
XPS spectroscopic analysis identified the existence of carbonate species (C=O), which increased with the increasing carbon number of precursor molecule.
Photoluminescence spectra demonstrated that the carbonate species suppressed the recombination rate of electron-hole pair.
As a result, a mechanism of visible-light-active photocatalyst was proposed according to the formation of carbonate species on carbon-modified TiO2.
American Psychological Association (APA)
Huang, Chun-Hung& Lin, Yu-Ming& Wang, I-Kai& Lu, Chun-Mei. 2012. Photocatalytic Activity and Characterization of Carbon-Modified Titania for Visible-Light-Active Photodegradation of Nitrogen Oxides. International Journal of Photoenergy،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-480583
Modern Language Association (MLA)
Huang, Chun-Hung…[et al.]. Photocatalytic Activity and Characterization of Carbon-Modified Titania for Visible-Light-Active Photodegradation of Nitrogen Oxides. International Journal of Photoenergy No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-480583
American Medical Association (AMA)
Huang, Chun-Hung& Lin, Yu-Ming& Wang, I-Kai& Lu, Chun-Mei. Photocatalytic Activity and Characterization of Carbon-Modified Titania for Visible-Light-Active Photodegradation of Nitrogen Oxides. International Journal of Photoenergy. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-480583
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480583