Journalartikel

Autorenliste: Schlettwein, D; Kaneko, M; Yamada, A; Wöhrle, D; Jaeger, NI

Jahr der Veröffentlichung: 1991

Seiten: 1748-1755

Zeitschrift: Journal of Physical Chemistry

Bandnummer: 95

Heftnummer: 4

ISSN: 0022-3654

DOI Link: https://doi.org/10.1021/j100157a049

Verlag: American Chemical Society

Abstract: 
Thin films of porphyrins and porphyrin analogue compounds such as phthalocyanines, 1, tetraphenylporphyrins, 2, and naphthalocyanines, 3, coated on ITO in contact with an aqueous electrolyte were investigated in the photoreduction of dioxygen under illumination with visible light. The films (thickness 10-500 nm) were obtained by casting and vapor deposition procedures. Especially zinc phthalocyanine dispersed in poly(vinylidene fluoride) exhibited a significant cathodic photocurrent with a high selectivity toward dioxygen and a good stability. Besides the photoaction spectrum and the current pulse at the onset of illumination, the influences of the film thickness, concentration of dioxygen, and light intensity were investigated. The mechanisms of the charge carrier generation in the bulk material and of the surface processes leading to the photoreduction of dioxygen to H2O2 are discussed.

Harvard-Zitierstil: Schlettwein, D., Kaneko, M., Yamada, A., Wöhrle, D. and Jaeger, N. (1991) Light-induced dioxygen reduction at thin film electrodes of various porphyrins, Journal of Physical Chemistry, 95(4), pp. 1748-1755. https://doi.org/10.1021/j100157a049

APA-Zitierstil: Schlettwein, D., Kaneko, M., Yamada, A., Wöhrle, D., & Jaeger, N. (1991). Light-induced dioxygen reduction at thin film electrodes of various porphyrins. Journal of Physical Chemistry. 95(4), 1748-1755. https://doi.org/10.1021/j100157a049