Reduction of silver ions in gold nanoparticle suspension for detection of dihydroxybenzene isomers
作者: Hoon ChoiTaegyeong KangKiju UmJinku KimKangtaek Lee
作者单位: 1Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Korea
2Department of Bio and Chemical Engineering, Hongik University, Sejong, Korea
刊名: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014, Vol.459 , pp.120-127
来源数据库: Elsevier Journal
DOI: 10.1016/j.colsurfa.2014.06.050
关键词: Dihydroxybenzene isomerHydroquinoneCatecholResorcinolSilver ionsGold nanoparticles
原始语种摘要: Abstract(#br)We have investigated the reduction of silver ions in a gold nanoparticle suspension by dihydroxybenzene isomers: hydroquinone (1,4-dihydroxybenzene), catechol (1,2-dihydroxybenzene), and resorcinol (1,3-dihydroxybenzene). We found that using these isomers as reducing agents resulted in distinctive color changes of suspensions. When hydroquinone was added to suspensions containing cysteamine-modified gold nanoparticles and silver nitrate, the suspension changed from red to yellow because a silver shell formed on the gold nanoparticles. With catechol, the suspension initially turned yellow from formation of core–shell nanoparticles, and then it became black following the polymerization of catechol on the nanoparticle surfaces. This caused charge reversal followed by aggregation...
全文获取路径: Elsevier  (合作)

  • nanoparticle 乳酸
  • silver 
  • isomers 等比值线
  • suspension 悬移
  • shell 贝壳
  • initially 最初
  • hydroquinone 氢醌
  • catechol 八茶酚
  • detection 探测
  • polymerization 聚合酌