@article {43076,
	title = {Characterization of nano-sized CdS-Ag2S core-shell nanoparticles using XPS technique},
	journal = {Colloids and Surfaces A-Physicochemical and Engineering Aspects},
	volume = {293},
	year = {2007},
	month = {FEB},
	pages = {5-12},
	abstract = {<p>This paper reports the use of X-ray photoelectron spectroscopy (XPS) method for the characterization of surface composition of core and shell nanoparticles. The core and shell nanoparticles were synthesized using sodium bis(2-ethylhexyl) sulfosuccinate (AOT)/n-heptane/water microemulsion technique. The post-core and partial microemulsion methods have shown promise for core and shell formation and enhanced stability and sphericity of the semiconductor nanoparticles. In addition to above technique, the core-shell nanoparticles have also been characterized using SEM-elemental detection X-ray analysis (EDAX) and results are discussed. The XPS studies of US, Ag2S, and CdS-Ag2S nanoparticles prepared by post-core/partial microemulsion methods were carried out and results are compared with physical mixing of US and Ag2S nanoparticles. The Ag/Cd atomic ratio is found to be 5 and 10 as determined by XPS methods for nanoparticles prepared by using post-core and partial microemulsion methods, respectively. These results show the formation of core and shell nanoparticles. (c) 2006 Elsevier B.V. All rights reserved.</p>},
	doi = {10.1016/j.colsurfa.2006.06.036},
	author = {Hota, G. and Idage, Susheela B. and Khilar, Kartic C.}
}
