HYDROGEN-PRODUCTION FROM WATER BY VISIBLE-LIGHT USING ZINC PORPHYRIN-SENSITIZED PLATINIZED TITANIUM-DIOXIDE

被引：48

作者：

MALINKA, EA ^{[1
]}

KAMALOV, GL ^{[1
]}

VODZINSKII, SV ^{[1
]}

MELNIK, VI ^{[1
]}

ZHILINA, ZI ^{[1
]}

机构：

[1] ODESSA II MECHNIKOV STATE UNIV,ODESSA 270000,UKRAINE

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1995年 / 90卷 / 2-3期

关键词：

HYDROGEN PRODUCTION; PHOTOSENSITIZATION; TITANIUM DIOXIDE; ELECTRON DONOR; IRRADIATION;

D O I：

10.1016/1010-6030(95)04093-U

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The rate of H-2 evolution from aqueous suspensions of Pt/TiO2 with deposited zinc porphyrin in the presence of an electron donor (EDTA, triethanolamine, ascorbic and oxalic acids) during irradiation by visible light (lambda > 520 nm) was optimized with respect to the concentrations of platinum, zinc porphyrin and electron donor. The relationship between the rate of hydrogen evolution and pH has a maximum at pH 4-5 for EDTA, ascorbic and oxalic acids, as does the adsorption of these donors on TiO2. In the case of triethanolamine, H-2 production increases sharply in alkaline solutions when the triethanolamine molecules are deprotonated. The photostability of the photosensitizer increases on the semiconductor. Turn-over numbers for the zinc porphyrins varied from 50 for water-soluble zinc porphyrin up to 150-185 for water-insoluble sensitizers.

引用

页码：153 / 158

页数：6

共 43 条

[1]

BOGATSKII AV, 1982, ZH ORG KHIM+, V18, P2309

[2]

BOGATSKII AV, 1985, ZH ORG KHIM, V24, P649

[3]

BORGARELLO E, 1984, NOUV J CHIM, V8, P567

[4] PHOTOCHEMICAL CLEAVAGE OF WATER BY PHOTOCATALYSIS [J].