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Titolo:
Improving the photoelectrochemical performance of nanostructured TiO2 films by adsorption of gold nanoparticles
Autore:
Chandrasekharan, N; Kamat, PV;
Indirizzi:
Notre Dame Radiat Lab, Notre Dame, IN 46556 USA Notre Dame Radiat Lab Notre Dame IN USA 46556 b, Notre Dame, IN 46556 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 46, volume: 104, anno: 2000,
pagine: 10851 - 10857
SICI:
1520-6106(20001123)104:46<10851:ITPPON>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROCHEMICALLY ASSISTED PHOTOCATALYSIS; RUTHENIUM POLYPYRIDYL COMPLEX; CHARGE-TRANSFER PROCESSES; SEMICONDUCTOR THIN-FILMS; SILVER PARTICLES; ELECTRODES; CDS; PHOTOSENSITIZATION; PHOTOCHEMISTRY; DEGRADATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Kamat, PV Notre Dame Radiat Lab, Notre Dame, IN 46556 USA Notre Dame Radiat Lab Notre Dame IN USA 46556 ame, IN 46556 USA
Citazione:
N. Chandrasekharan e P.V. Kamat, "Improving the photoelectrochemical performance of nanostructured TiO2 films by adsorption of gold nanoparticles", J PHYS CH B, 104(46), 2000, pp. 10851-10857

Abstract

TiO2 films cast on conducting glass plates were modified by adsorbing goldnanoparticles (5 nm diameter) from a toluene solution. Selective formationof Au islands and larger particles on the TiO2 surface could be seen from transmission electron micrographs and AFM images. Although the adsorbed Au particles are larger in diameter (50-70 nm), they retain surface plasmon characteristics, similar to those observed for smaller gold nanoparticles in solutions. A 3-fold enhancement in photocurrent generation has been achieved upon modification of TiO2 films with Au nanoparticles. This improved photoelectrochemical performance is explained on the basis of improved interfacial charge-transfer kinetics of the TiO2/Au composite film. Such semiconductor-metal composite films have potential applications in improving the performance of photoelectrochemical solar cells.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 10:25:45