摘要
以硝酸铅和碘化钾为原料,在体系中添加表面活性剂聚乙二醇(PEG),采用一步室温固相化学反应制备出聚乙二醇表面修饰的碘化铅纳米棒,利用X射线衍射,红外光谱,透射电子显微镜,扫描电子显微镜,热分析和元素分析等手段对其进行了表征.实验结果表明在体系中添加的表面活性剂PEG不仅与碘化铅纳米棒发生了化学键合作用,而且对产物形貌的控制起到决定作用,形成了表面键合有聚乙二醇的碘化铅纳米棒,其中被PEG600修饰的碘化铅纳米棒粗细均匀,表面光滑,直径约为100nm,长度达2μm.
Surface-modified lead iodide nanorods were synthesized by one-step room temperature solid-state reaction of lead nitrate with potassium iodide in the presence of a nonionic surfactant, polyethylene glycol. The chemical composition and structural features of the products were investigated by elemental analysis, XRD, IR, TG, SEM and TEM, respectively. The results confirmed the existence of organic layer connected with the inorganic nuclei. The products consist of a large quantity of nanorods. The diameters of PbI2 nanorods modified by PEG600 are 100 nm and lengths up to several micrometers. The surfactant polyethylene glycol, which not only modifies the surface of lead iodide but also greatly impacts the morphology of the products, plays an important role in the formation of the products.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2005年第6期503-506,F007,共5页
Acta Chimica Sinica
基金
国家自然科学基金(Nos.20161003
20366005)资助项目.
