选用TX-100/环己烷/正己醇/水反相微乳体系,以AgNO3为Ag源、Na2S·9H2O为S源、L-半胱氨酸为结构导向剂,室温下制备了高晶化度、直径为10-50nm的Ag2S纳米晶,并考察了影响其粒径大小的因素.紫外-可见吸收光谱表明,Ag2S纳米晶在290 nm处呈现强吸收,与体相Ag2S(1 240 nm)相比,其吸收边发生了明显的蓝移.通过调控微乳体系中ω0(水与表面活性剂物质的量比)、Ag+与L-半胱氨酸的物质的量比、反应物浓度等可以实现对产物尺寸和形貌的调控.
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