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Titolo:
Highly hydrophilic surfaces of cathodically polarized amorphous TiO2 electrodes
Autore:
Sakai, N; Fujishima, A; Watanabe, T; Hashimoto, K;
Indirizzi:
Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan Univ Tokyo Tokyo Japan 1538904 Res Ctr, Meguro Ku, Tokyo 1538904, Japan Univ Tokyo, Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan UnivTokyo Tokyo Japan 1138656 ppl Chem, Bunkyo Ku, Tokyo 1138656, Japan
Titolo Testata:
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
fascicolo: 10, volume: 148, anno: 2001,
pagine: E395 - E398
SICI:
0013-4651(200110)148:10<E395:HHSOCP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONDUCTION-BAND ELECTRONS; OXIDE SEMICONDUCTOR ELECTRODE; OPTICAL ELECTROCHEMISTRY; PHOTOINDUCED HYDROPHILICITY; SPECTROSCOPIC DETERMINATION; FILMS; POTENTIALS; CONVERSION; INTERFACE; SYSTEMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Sakai, N Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan Univ Tokyo Tokyo Japan 1538904 Meguro Ku, Tokyo 1538904, Japan
Citazione:
N. Sakai et al., "Highly hydrophilic surfaces of cathodically polarized amorphous TiO2 electrodes", J ELCHEM SO, 148(10), 2001, pp. E395-E398

Abstract

We have investigated the change in surface wettability of n-type semiconductor TiO2 electrode surfaces induced by cathodic polarization. While the wettability of polycrystalline anatase electrode surfaces did not change remarkably regardless of the electrode potential, the surface of amorphous TiO2electrodes becarrie highly hydrophilic under cathodic conditions without UV light irradiation. We conclude that the increase in the number of hydroxyl groups due to electron addition to the near-band-edge trap sites accompanied by proton intercalation is responsible for the present hydrophilic conversion under cathodic conditions. (C) 2001 The Electrochemical Society.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 15:39:08