摘要
以聚乙烯吡咯烷酮(PVP)为稳定剂,采用乙酸锌和硫化钠合成了硫化锌(ZnS)胶体,采用分子沉积膜技术制备了聚电解质与ZnS纳米颗粒的复合薄膜。在ZnS胶体的紫外-可见光吸收光谱上可观察到激子吸收峰,胶体的吸收带边约为313 nm,与其体相材料比较,有明显蓝移现象,显示出量子尺寸效应。透射电镜下可观察到ZnS胶体颗粒为球形,粒径为3—7 nm。吸收光谱显示,聚电解质与ZnS胶体复合薄膜的吸光度随薄膜层数增加而上升;荧光光谱显示,复合膜在380 nm附近有较强发光,随着膜厚度增加,发光强度逐渐增强。
Colloidal Zinc sulfide(ZnS) stabilized with PVP was prepared from Zn(CH3COO)2 and Na2S.Poly S-119 was used to fabricate polyelectrolyte/ZnS multilayer composite films via the molecular deposition technique.The colloidal ZnS was characterized by using a UV-vis spectrophotometer and a transmission electron microscope(TEM),and the composite multilayer thin films were characterized by using the UV-vis spectrophotometer and a fluorescence spectrophotometer.The UV-vis absorption spectrum of the colloidal ZnS show...
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第1期13-16,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(60537050)
关键词
硫化锌
聚电解质
分子沉积膜
紫外-可见光吸收光谱
荧光光谱
zinc sulfide
polyelectrolyte
molecular deposition technique
UV-vis absorption spectrum
fluorescence spectrum
