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PVP-Capped Silver Nanoparticles as Catalyst for Oxidative Coupling of Thiols to Disulfides

✍ Scribed by Jiangmei YAN; Huiwang TAO; Muling ZENG; Jun TAO; Shihong ZHANG; Zhiying YAN; Wei WANG; Jiaqiang WANG

Book ID: 104452841
Publisher: Elsevier Science
Year: 2009
Weight: 222 KB
Volume: 30
Category: Article
ISSN: 1872-2067
DOI: 10.1016/s1872-2067(08)60128-x

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✦ Synopsis

Polyvinylpyrrolidone (PVP)-capped silver nanoparticles were used as the catalyst for the oxidative coupling of n-dodecanethiol. The product was characterized to be n-dodecyl disulfide by mass spectrometry, Fourier transform infrared spectroscopy, Raman spectroscopy, and proton nuclear magnetic resonance spectroscopy. The effects of reaction time, temperature, catalyst concentration, and water amount on catalyst performance were examined. The optimum reaction conditions were 0.157 mmol PVP-capped silver nanoparticles, 20 l distilled water, reaction temperature of 100 o C, and reaction time of 3 h. The PVP-capped silver nanoparticles were also used as the catalyst for the oxidative coupling of n-butanethiol and n-octanethiol to their corresponding disulfides.

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