Photocatalytic Synthesis of Gold Nanoparticles Using Preyssler Acid and Their Photocatalytic Activit

• 作 者: Ali AYATI Ali AHMADPOUR Fatemeh F.BAMOHARRAM Majid M.HERAVI Hamed RASHIDI
• 机 构: Department of Chemical Engineering,Ferdowsi University of Mashhad,Department of Chemistry,School of
• 出 处: 催化学报
• 发表日期: 2011年06期
• 关键词: stabilizer hexagonal transferring constants orange reagent irradiation catalyze

Preyssler acid H14[NaP5W30O110] was used as reducing agent and stabilizer for the synthesis of gold nanoparticles by photolysis of Au(III)/Preyssler acid/propan-2-ol solution.Preyssler acid plays both the role of transferring electrons from propan-2-ol to Au(III) and stabilizing the nanoparticles.Propan-2-ol was used as sacrificial reagent for the photoformation of reduced Preyssler acid.Gold nanoparticles (Au NPs) were characterized by UV-Vis spectroscopy,transmission electron microscopy (TEM),and particle size distribution (PSD) measurements.The synthesized Au NPs had a uniform hexagonal morphology and their size was about 17 nm.The catalytic performance of these NPs for photodegradation of methyl orange (MeO) was investigated in aqueous solution.UV-Vis studies showed that Au NPs can catalyze photodegradation of this azo dye.The pseudo-first-order rate constants were also calculated for this reaction.

Preyssler acid H14 [NaP5W30O110] was used as reducing agent and stabilizer for the synthesis of gold nanoparticles by photolysis of Au (III) / Preyssler acid / propan-2-ol solution. Preyssler acid plays both the role of transferring soil electrons from propan-2 -ol to Au (III) and stabilizing the nanoparticles. Propan-2-ol was used as a sacrificial reagent for the photoformation of reduced Preyssler acid. Gold nanoparticles (Au NPs) were characterized by UV-Vis spectroscopy, transmission electron microscopy (TEM) , and particle size distribution (PSD) measurements. The synthesized Au NPs had a uniform hexagonal morphology and their size was about 17 nm. The catalytic performance of these NPs for photodegradation of methyl orange (MeO) was investigated in aqueous solution. UV-Vis studies showed that Au NPs can catalyzed photodegradation of this azo dye. The pseudo-first-order rate constants were also calculated for this reaction.