纳米硒的制备和表征  

Preparation and characterization of selenium nano-particles

作　　者：李志林[1] 郭洪英[1] 路红凯[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《无机盐工业》2006年第7期18-20,共3页Inorganic Chemicals Industry

摘　　要：硒是一种人体必需的微量元素,随着科技的发展,人们对这种物质的利用也越来越广泛。报道了一种以聚乙烯醇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、聚乙烯醇质量分数为1.0%、常温下反应5 m in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。Selenium is a necessary micro -element for humanbody. With the development of science and technology, the application of selenium is becoming increasely extensive. The preparation of selenium nanoparticle by using 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 H2 SeO3 and ascorbie acid in the reaction system are 0.01 mol/L and 0.07 mol/L respectively, the con- centration of polyvinyl alcohol is 1.0% （mass） and the reaction time is 5 min at room temperature ,the uniform, stable red spheric selenium nanoparticle with average size of about 30 nm can be obtained.

关 键 词：纳米硒 聚乙烯醇 表征 模板 

分 类 号：TQ125.2[化学工程—无机化工]