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Titolo:
Comparative assessment of the efficiency of TiO2/OTE thin film electrodes fabricated by three deposition methods - Photoelectrochemical degradation of the DBS anionic surfactant
Autore:
Hidaka, H; Ajisaka, K; Horikoshi, S; Oyama, T; Takeuchi, K; Zhao, J; Serpone, N;
Indirizzi:
Meisei Univ, Frontier Res Ctr Global Environm Protect, Hino, Tokyo 1918506, Japan Meisei Univ Hino Tokyo Japan 1918506 Protect, Hino, Tokyo 1918506, Japan Inst Phys & Chem Res, Wako, Saitama 3510198, Japan Inst Phys & Chem Res Wako Saitama Japan 3510198 o, Saitama 3510198, Japan Chinese Acad Sci, Inst Photog Chem, Beijing 100101, Peoples R China Chinese Acad Sci Beijing Peoples R China 100101 100101, Peoples R China Concordia Univ, Dept Chem & Biochem, Montreal, PQ H3G 1M8, Canada Concordia Univ Montreal PQ Canada H3G 1M8 m, Montreal, PQ H3G 1M8, Canada
Titolo Testata:
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
fascicolo: 2, volume: 138, anno: 2001,
pagine: 185 - 192
SICI:
1010-6030(20010115)138:2<185:CAOTEO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROCHEMICALLY ASSISTED PHOTOCATALYSIS; AQUEOUS ACETIC-ACID; SOL-GEL PROCESS; PHOTOELECTROCATALYTIC DEGRADATION; DECOMPOSITION; 4-CHLOROPHENOL; OXIDATION;
Keywords:
TiO2/OTE thin film; DBS anionic surfactant; photoelectrochemical degradation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Hidaka, H Meisei Univ, Frontier Res Ctr Global Environm Protect, 2-1-1 Hodokubo, Hino, Tokyo 1918506, Japan Meisei Univ 2-1-1 Hodokubo Hino Tokyo Japan 1918506 18506, Japan
Citazione:
H. Hidaka et al., "Comparative assessment of the efficiency of TiO2/OTE thin film electrodes fabricated by three deposition methods - Photoelectrochemical degradation of the DBS anionic surfactant", J PHOTOCH A, 138(2), 2001, pp. 185-192

Abstract

This study reports on a comparative assessment of the efficiencies of TiO2/SnO2-doped OTE thin film electrodes fabricated by three different deposition methods. Process efficiencies, as measured by the kinetics of degradation, were examined by monitoring the photo-oxidative fate of two test substrates, namely the anionic surfactant sodium dodecylbenzenesulfonate (DBS) andthe model compound sodium benzenesulfonate (BS). Methods chosen to fabricate the TiO2/OTE electrodes comprised (i) pulsed laser deposition, (ii) deposition of a TiO2 paste on the OTE plate, and (iii) sol-gel deposition. BothDBS and BS are readily photo-oxidized and, under our conditions, were partially mineralized to CO2 with the process being made particularly more efficient when the TiO2/OTE electrodes were anodically biased at +0.3 V, which generated a photocurrent during the photoelectrolysis. The sol-gel {C} and anatase {B1} electrodes proved especially useful under the +0.3 V bias. In the absence of any bias, however, DBS photodegraded faster on the TiO2-pasted electrode. Under otherwise similar conditions, the pulsed laser rutile TiO2/OTE electrode showed very little photoactivity. Some of the characteristics of the TiO2 film, such as the TiO2 crystalline form, film thickness, surface roughness, and film transparency appear to have some effect on the overall photodegradative process efficiency. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 13:49:19