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Optical studies of polyvinylpyrrolidone reduction effect on free and complex metal ions

Published online by Cambridge University Press:  03 March 2011

Caixia Kan ,
Weiping Cai ,
Cuncheng Li  and
Lide Zhang
Caixia Kan
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academia of Sciences, Hefei 230031, People's Republic of China
Weiping Cai*
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academia of Sciences, Hefei 230031, People's Republic of China
Cuncheng Li
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academia of Sciences, Hefei 230031, People's Republic of China
Lide Zhang
Affiliation:
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academia of Sciences, Hefei 230031, People's Republic of China
*
a) Address all correspondence to this author. e-mail: wpcai@issp.ac.cn
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Abstract

Polyvinylpyrrolidone (PVP) reduction effect on free and complex Ag+ and Au3+ ions was studied from optical measurements by adding a metal precursor (K-30), commonly used as a stabilizer, to PVP. It was found that PVP has a strong reduction effect on free ionic metal, such as Ag+ ion in AgNO3, but much weaker on complex ionic metals, AuCl4− in HAuCl4 and Ag(NH3)2+ in Ag(NH3)2OH. This is explained based on the coordinative field of polar group in PVP molecules.

Keywords

Chemical reactivityNanoparticleOptical properties

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Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 2 , February 2005 , pp. 320 - 324
Copyright
Copyright © Materials Research Society 2005

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