Synthesis and characterization of mixed CdS-ZnS nanoparticles in reverse   micelles

doi:10.1016/0927-7757(96)03545-5

CORC > 北京大学 > 化学与分子工程学院

	Synthesis and characterization of mixed CdS-ZnS nanoparticles in reverse micelles
	Qi, LM ; Ma, JM ; Cheng, HM ; Zhao, ZG
刊名	colloids and surfaces a physicochemical and engineering aspects
	1996
关键词	coated particles mixed semiconductor nanoparticles photoluminescence reverse micelles ZnS-CdS CADMIUM-SULFIDE INSITU PHOTOSENSITIZED CHARGE SEPARATION SEMICONDUCTOR PARTICLES HYDROGEN-PRODUCTION PHOTOPHYSICAL PROPERTIES VISIBLE-LIGHT COLLOIDS SYSTEMS POLYDISPERSITY CHEMISTRY
DOI	10.1016/0927-7757(96)03545-5
英文摘要	Three different types of mixed CdS-ZnS semiconductor nanoparticles were synthesized in reverse micelles and were characterized by optical absorption and photoluminescence (PL) spectroscopy. The coprecipitated ZnxCd1-xS nanoparticles, comprised of homogeneously mixed crystals, show a continuously tunable energy gap from single CdS nanoparticles to ZnS nanoparticles. Coating the CdS core particles with a layer of ZnS in reverse micelles leads to ZnS-coated CdS (CdS/ZnS) nanoparticles with a core-shell structure, which show absorption and PL characteristics which differ considerably to those of either the coprecipitated particles or the sum of the separate particles. The intensity of the PL band centered at 630 nm, which arises from the coated CdS/ZnS nanoparticles, shows a maximum at a Zn/Cd molar ratio of about 1:1 on increasing the Zn/Cd ratio when the total concentration of CdS and ZnS is kept constant. CdS-coated ZnS (ZnS/CdS) nanoparticles synthesized in reverse micelles have absorption spectra similar to those of the coated CdS/ZnS nanoparticles but show no significant luminescence activation.; Chemistry, Physical; SCI(E); EI; 45; ARTICLE; 3; 195-202; 111
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151722]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Qi, LM,Ma, JM,Cheng, HM,et al. Synthesis and characterization of mixed CdS-ZnS nanoparticles in reverse micelles[J]. colloids and surfaces a physicochemical and engineering aspects,1996.
APA	Qi, LM,Ma, JM,Cheng, HM,&Zhao, ZG.(1996).Synthesis and characterization of mixed CdS-ZnS nanoparticles in reverse micelles.colloids and surfaces a physicochemical and engineering aspects.
MLA	Qi, LM,et al."Synthesis and characterization of mixed CdS-ZnS nanoparticles in reverse micelles".colloids and surfaces a physicochemical and engineering aspects (1996).