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Simultaneous Elimination of Formaldehyde and Ozone Byproduct Using Noble Metal Modified TiO2 Films in the Gaseous VUV Photocatalysis
Joint Authors
Li, Jia
Fu, Pingfeng
Zhang, Pengyi
Source
International Journal of Photoenergy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Simultaneous removal of low concentration formaldehyde (HCHO) and ozone byproduct was investigated in the gaseous VUV (vacuum ultraviolet) photocatalysis by using noble metal modified TiO2 films.
Noble metal (Pt, Au, or Pd) nanoparticles were deposited on TiO2 films with ultrafine particle size and uniform distribution.
Under 35 h VUV irradiation, the HCHO gas (ca.
420 ppbv) was dynamically degraded to a level of 10~45 ppbv without catalyst deactivation, and over 50% O3 byproduct was in situ decomposed in the reactor.
However, under the same conditions, the outlet HCHO concentration remained at 125~178 ppbv in the O3 + UV254 nm photocatalysis process and 190~260 ppbv in the UV254 nm photocatalysis process.
And the catalyst deactivation also appeared under UV254 nm irradiation.
Metallic Pt or Au could simultaneously increase the elimination of HCHO and ozone, but the PdO oxide seemed to inhibit the HCHO oxidation in the UV254 nm photocatalysis.
Deposition of metallic Pt or Au reduces the recombination of h+/e− pairs and thus increases the HCHO oxidation and O3 reduction reactions.
In addition, adsorbed O3 may be partly decomposed by photogenerated electrons trapped on metallic Pt or Au nanoparticles under UV irradiation.
American Psychological Association (APA)
Fu, Pingfeng& Zhang, Pengyi& Li, Jia. 2012. Simultaneous Elimination of Formaldehyde and Ozone Byproduct Using Noble Metal Modified TiO2 Films in the Gaseous VUV Photocatalysis. International Journal of Photoenergy،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-451889
Modern Language Association (MLA)
Fu, Pingfeng…[et al.]. Simultaneous Elimination of Formaldehyde and Ozone Byproduct Using Noble Metal Modified TiO2 Films in the Gaseous VUV Photocatalysis. International Journal of Photoenergy No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-451889
American Medical Association (AMA)
Fu, Pingfeng& Zhang, Pengyi& Li, Jia. Simultaneous Elimination of Formaldehyde and Ozone Byproduct Using Noble Metal Modified TiO2 Films in the Gaseous VUV Photocatalysis. International Journal of Photoenergy. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-451889
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-451889