【摘要】 以甲苯作溶剂,硼氢化钠作还原剂,在液/液两相界面处,通过还原氯金酸的方法制备了金纳米粒子.分别研究了4-辛基溴化铵作为相转移剂和稳定剂制备的金溶胶体系,并用紫外可见分光光度计、红外光谱、原子力显微镜分别对金纳米体系及其自组装行为进行了表征.结果表明:配体修饰后,金溶胶在有机相的原溶液中是相当稳定的,但继续补加甲苯或其他物质后,金溶胶体系变得不太稳定,并很快趋于沉降状态.更多还原

【Abstract】 Sodium borohydride was used as reducing agent and toluene was used as solvent.Hydrogen tetracholoroaurate was deoxidized to fabricate gold nanoparticles at the liquid/liquid inter-face of two solvent phases.The different systems of colloidal gold were studied by the below steps:first,tetraoctylammonium bromide((C₇H₁₅)₄NBr) was used both as a phase-transfer reagent and as a stabilizer.The properties of the assemblies were characterized by using IR spectrum,UV-Visible spectrum and atomic force microscope （AFM） techniques.The results indicated that the original gold system was quite stable and they would subside once added some new toluene or other substances.更多还原