سال انتشار: ۱۳۸۸

محل انتشار: ششمین کنگره بین المللی مهندسی شیمی

تعداد صفحات: ۵

نویسنده(ها):

M . G Hosseini – Electrochemical Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz
R Najjar – Polymer Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, c)
M Shokri – Department of Applied Chemistry, Islamic Azad University, Tabriz Branch, P.O.Box 1655, Tabriz, Iran
S Sheikhy – Department of Applied Chemistry, Islamic Azad University, Tabriz Branch, P.O.Box 1655, Tabriz, Iran

چکیده:

The present paper will introduce the synthesis of platinum nanoparticles by the reduction of H2PtCl6 with NaBH4 in sodium bis(2-ethylhexyl) sulphosuccinate (AOT)/nheptane/ water/metal salt or reducing agent reversed micellar solutions. The effect of metal precursor concentration in aqueous phase ([H2PtCl6] = 0.4, 0.8 and 1.2 wt% as metallic Pt), water to AOT molar ratio (ω◦ = ۴, ۸ and 12) and reducing agent to metal saltmolar ratio ([NaBH4]/[H2PtCl6] = 5, 7.5 and 10) on the reaction were investigated. The reaction progress was monitored by time resolved UV–Vis absorption spectroscopy. The dispersions of the platinum nanoparticles obtained with 0.4 and 0.8 wt% of metallic Pt in aqueous phase were very stable and no precipitated particles were observed in three months time scale.