ESR STUDY OF MV2+ PHOTOREDUCTION ON THE SURFACE OF NANOMETER-SIZED CdS

doi:10.7517/j.issn.1674-0475.1995.03.227

Imaging Science and Photochemistry ›› 1995, Vol. 13 ›› Issue (3): 227-233.DOI: 10.7517/j.issn.1674-0475.1995.03.227

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ESR STUDY OF MV²⁺ PHOTOREDUCTION ON THE SURFACE OF NANOMETER-SIZED CdS

YANG JIAN-JUN¹, FENG LIANG-BO², ZHANG ZHI-JUN¹, JIN ZHEN-SHENG²

1. Department of Chemistry, Henan University, Kaifeng 475001, P. R. China;
2. LanZhou Institute of Chemical Physics, Lanzhou 730000, P. R. China

Received:1994-11-11 Revised:1995-05-06 Online:1995-08-20 Published:1995-08-20

Abstract

Abstract: The photoreduction of MV²⁺ on the surface of nanometer-sized CdS was investigatedby means of ESR. Under illumination of the nanometer-sized CdS dispersion in 1.1×10^-3mol/L MV²⁺ ethanol solution the photoreduction rate of MV²⁺ on CdS surface keeps constant and the dimerization rate of the photoreduction product MV^+·obeys the law of secondorder reaction.The results obtained also show that the dissolved O₂^- in ethanol solution or the ionosorbed oxygen on CdS surface has inhibiting action on the photo reduction of MV²⁺.

Key words: cadmium sulfide, methylviologen, photoreduction, ESR Author to whom(Guest Professor of Henan University)correspondence should be addressed.

YANG JIAN-JUN, FENG LIANG-BO, ZHANG ZHI-JUN, JIN ZHEN-SHENG. ESR STUDY OF MV²⁺ PHOTOREDUCTION ON THE SURFACE OF NANOMETER-SIZED CdS[J]. Imaging Science and Photochemistry, 1995, 13(3): 227-233.

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ESR STUDY OF MV²⁺ PHOTOREDUCTION ON THE SURFACE OF NANOMETER-SIZED CdS

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