摘要
采用乙二胺、1,3-丙二胺、丁胺和β-羟乙基乙二胺等不同胺为模板剂,它们与CS2反应生成的H2S为硫源,在50℃与ZnSO4搅拌反应20min制备了有孔的ZnS纳米空球.用SEM和TEM表征了有孔ZnS纳米空球的形貌、粒子大小为100~850nm以及孔的大小为150~600nm,XRD和HRTEM阐明了其为B型立方晶系,并由2~5nm的ZnS纳米晶构成,UV—vis最大吸收峰蓝移表明其具有一定的量子尺寸效应.胺模板剂的两个氨基有利于与Zn^2+作用而形成均匀、相对光滑的有孔ZnS纳米空球,引入羟乙基则不利,提出了由H2S冲出形成孔的合理机理.
The ZnS hollow nanospheres with holes were prepared by reacting ZnSO4 with H2S, the sulfide source, formed in the reaction of CS2 with ethylenediamine, 1,3-propylenediamine, hutylamine or 2-(2-Aminoethylamino) ethanol, which acted as template agent also, at 50 ℃ under agitating. The shape, particle size of about 100 ~ 850 nm and hole size of about 150 ~ 600 nm of ZnS hollow nanospheres with holes were shown by SEM and TEM images. These ZnS nanospheres with β cubic ZnS phase and composed by 2 ~ 5 nm of nanocrystals were proved by XRD and HRTEM. The blue shift of λmax in UV-vis displayed the effect of quantum size. The two aminos of amine template favor to act with Zn^2+ form uniform and relatively smooth ZnS holey nanospheres, while hydroxyethyl took disadvantage. Reasonable mechanism of hole by H2S rushing out was suggested.
出处
《暨南大学学报(自然科学与医学版)》
CAS
CSCD
北大核心
2007年第1期92-95,共4页
Journal of Jinan University(Natural Science & Medicine Edition)
关键词
硫化锌
胺模板剂
合成
有孔纳米空球
zinc sulfide
amine template
synthesis
hollow nanosphere