摘要
为考察超声作用和无表面活性剂乳液对合成纳米材料的影响作用,在超声诱导形成的油包水乳液介质中,制备出菊花状CdS纳米结构微球。用SEM,TEM和XRD等对产物进行了表征,考察了反应温度的影响作用,并初步探讨了产物的形成机理。结果表明:CdS纳米结构微球的平均直径为7μm,属于立方晶系,由纳米级的结构单元——直径为140 nm的CdS纳米棒组成;随着反应温度的升高,所合成的CdS纳米结构微球的直径变小。油包水乳液的分散相液滴对CdS纳米结构微球的形成起到空间限定和模板作用。文中报道的方法可望用于其他组成的球状纳米结构的合成。
To investigate the effect of sonication and non-surfactant emulsion on the synthesized nanomaterials, chrysanthemum-like CdS nanostructured microspheres were prepared via a novel sonication-induced emulsion route. The products were characterized by SEM, TEM and XRD products was investigated ; the possible mechanism for the that the CdS nanostructured microspheres have an average ; the effect of the reaction temperature on the size of the formation of the products was discussed. The results show diameter of 7μm and are consisted of CdS nanorods with a diameter of about 140 nm. With the rise of reaction temperature, the diameter of the CdS nanostructured microspheres decreases. The droplets of the sonication-induced emulsion serve as the templates for the formation of the CdS nanostructured microspheres. Such route can also be applied to the preparation of the spherical nanostructures with other constitutes.
出处
《化学工程》
EI
CAS
CSCD
北大核心
2007年第9期48-50,共3页
Chemical Engineering(China)
基金
国家自然科学基金项目(50572088)
陕西省自然科学基金项目(2006B29)
