شماره ركورد كنفرانس :
5048
عنوان مقاله :
Fabrication of Highly Stable Platinum Nanoparticle via Microemulsions
Author/Authors :
M. G ،Hosseini Faculty of Chemistry - University of Tabriz, Tabriz , R ،Najjar Faculty of Chemistry - University of Tabriz, Tabriz , M ،Shokri Department of Applied Chemistry - Islamic Azad University - Tabriz Branch, Tabriz, Iran , S ،Sheikhy Department of Applied Chemistry - Islamic Azad University - Tabriz Branch, Tabriz, Iran
كليدواژه :
platinum Nanoparticles , sodium bis(2-ethylhexyl) sulphosuccinate AOT , stable platinum dispersions , reversed micelles , microemulsions
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
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◦ = 4, 8 and 12) and reducing agent to metal salt
molar 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.
