复配表面活性剂模板法制备纳米硒

报道了一种以十二烷基硫酸钠、聚乙烯醇复配作为软模板制备纳米硒的方法,并对所制得的纳米硒进行了表征,研究了反应物的浓度、温度,以及超声等反应条件对产物形貌以及粒径的影响。结果表明,当反应体系中亚硒酸浓度为0.01 mol/L、抗坏血酸浓度为0.07 mol/L、十二烷基硫酸钠质量分数为1.0%、聚乙烯醇质量分数为1.0%、常温下反应7 min后可得到均匀稳定的球形红色纳米硒颗粒,平均粒径约30 nm。

Preparation of nanometer selenium by mixed surfactant template method

The preparation of selenium nanoparticle by using sodium dodecyl sulfate and polyvinyl alcohol as a soft template is described and its performance is characterized.The influences of the concentration of reactants,reaction temperature and ultrasonic irradiation on the shape and size of the product are studied.The results show that when the concentration of H2SeO3 and ascorbic acid in the reaction system are 0.01 mol/L and 0.07 mol/L respectively,the concentration of sodium dodecyl sulfate is 1.0%(mass),the concentration of polyvinyl alcohol is 1.0%(mass),and the reaction time is 7 min at room temperature,the uniform,stable red spheric selenium nanoparticle with average size of about 30 nm can be obtained.