Investigations of CdS and Ag–CdS nanoparticles by X-ray photoelectron spectroscopy

In the present report, CdS and Ag–CdS nanoparticles were synthesized using cysteine as a capping agent. Surface properties CdS and Ag–CdS nanoparticles were studied by X-ray photoelectron spectroscopy (XPS). XPS study of CdS nanoparticles was carried out as a function of pH and for a refluxed sample...

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Veröffentlicht in:	Applied surface science 2010-12, Vol.257 (5), p.1390-1394
Hauptverfasser:	Thakur, Priya, Joshi, Satyawati S., Patil, K.R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Ag–CdS Cadmium sulfides CdS Clusters, nanoparticles, and nanocrystalline materials Compact disks Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Cysteine Electron and ion emission by liquids and solids impact phenomena Exact sciences and technology Materials science Nanoparticles Nanoscale materials and structures: fabrication and characterization Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Other topics in nanoscale materials and structures Photoemission and photoelectron spectra Physics Silver Structure of solids and liquids crystallography Surface properties X-ray photoelectron spectroscopy X-rays XPS
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Zusammenfassung:	In the present report, CdS and Ag–CdS nanoparticles were synthesized using cysteine as a capping agent. Surface properties CdS and Ag–CdS nanoparticles were studied by X-ray photoelectron spectroscopy (XPS). XPS study of CdS nanoparticles was carried out as a function of pH and for a refluxed sample at pH 11.2. Effect of dopant concentration on surface properties of Ag–CdS nanoparticles was also studied for as prepared samples as well as for annealed sample at 2% doping. Effect of pH, dopant concentration, and effect of particle size on different sulfur species present in the system was studied. Features of Cd 3d, S 2p and Ag 3d core level have been discussed in detail.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2010.08.035