摘要
以菊糖为软模板,利用抗坏血酸(Vc)在水相中与亚硒酸(H2SeO_3)发生氧化还原反应来制备纳米级单质硒.通过控制反应环境中菊糖的浓度、抗坏血酸的浓度、反应的时间以及反应的温度变化来探讨不同环境条件对纳米硒的粒径大小和形貌尺寸的影响,并采用双波长分光光度法、透射电镜(TEM)进行表征.结果表明:当菊糖的质量分数为0.6%、亚硒酸和Vc的摩尔比为1∶3,并在100℃下反应3 h后,可获得红色均匀的球状纳米硒颗粒,平均粒径在100 nm左右.
With the polysaccharide in Chicory as the soft template,Nano-selenium was prepared by the reaction of selenium acid（ H2 Se O3） and ascorbic acid（ Vc）. The effects of the inulin concentration,the Vc concentration,the reaction time and the temperature change of reaction on the particle size and morphology of nano-selenium were investigated. The products were characterized by dual-wavelength spectrophotometry and TEM. The results showed that when the mass fraction of inulin was 0. 6%,and the molar ratio of selenite and Vc was 1： 3,with the reaction being carried out at 100 ℃ for 3 h,the spherical nano-selenium particles were obtained with the average particle size at about 100 nm.
出处
《南京晓庄学院学报》
2017年第6期1-4,共4页
Journal of Nanjing Xiaozhuang University
基金
江苏省青蓝工程项目
江苏省高校重点建设实验室项目(苏教科[2016]8)
2015年江苏省大学生实践创新训练计划项目(201511460007Z)
关键词
菊糖
亚硒酸
抗坏血酸
纳米硒
inulin
selenious acid
ascorbic acid
nano-selenium
