PHOTOCATALYTIC REACTION OF AQUEOUS SOLUTION OF SULFUR DIOXIDE ON MODIFIED CADMIUM SULFIDE POWDER

doi:10.7517/j.issn.1674-0475.1988.01.15

Abstract

Abstract: In the present paper, influence of (1) reaction temperature (2) pt content on catalyst by applying the IR surface and (3) modified procedure and surface structure of catalysts on pho-tocatalytic activity and selectivity of reaction in the presence of Cds, mixed Pt/CdS and plated Pt/CdS was investigated.Experimental results indicated that (1) a rise in reaction temperature by applying the IR irradiation of solar energy can increase the photocatalytic activity by seven times but decrease the selectivity, (2) the activation energy is 21 kJ mol^-2, (3) 60℃ seems to be the optimal reaction temperature, (4) photocatalyst with about 5% Pt content maximizes the catalytic activity, and (5) catalytic activity for mixed Pt/Cds catalyst is higher than that of plated Pt/CdS catalyst due to higher dispersity and more fine particle distribution. The reaction mechanism was discussed in some detail.

Key words: sulfur dioxide, photocatalysis, temperature effect, mixed Pt photocatalyst, Plated Pt photocatalyst, modified CdS powder

ZHUANG QI-XING, WANG ZENG-HUA. PHOTOCATALYTIC REACTION OF AQUEOUS SOLUTION OF SULFUR DIOXIDE ON MODIFIED CADMIUM SULFIDE POWDER[J]. Imaging Science and Photochemistry, 1988, 6(1): 15-22.

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PHOTOCATALYTIC REACTION OF AQUEOUS SOLUTION OF SULFUR DIOXIDE ON MODIFIED CADMIUM SULFIDE POWDER

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