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Title

SOLID STATE MORPHOLOGY AND BAND GAP STUDIES OF ETS-10 SUPPORTED CDS NANOPARTICLES

Writers

NG Y.C. | SHAMSUDDIN M.

Pages

 Start Page 28 | End Page 33

Abstract

 Engelhard TITANOSILICATE (ETS-10) supported cadmium sulphide (CdS) nanoparticles were synthesized and characterized by various solid state techniques including: XRD, DR UV-Vis, TEM and FESEM. The effect of different synthesis routes of CDS NANOPARTICLES on its physicochemical character was studied. It was observed that CDS NANOPARTICLES prepared by both IN SITU SULPHUR REDUCTION (CdS-IS) and REVERSE MICELLE (CdS-RM) methods showed similar properties. However, CdS-IS nanoparticles are more feasible and economically practical. The reflectance measurements of the as-synthesized CDS NANOPARTICLES are apparently blue-shifted compared to bulk CdS. This phenomenon of blue-shifted absorption edge has been ascribed to an increase in bandgap energy with a decrease in particle sizes. The bandgap of the as-synthesized CdS samples was calculated from the linear correlation of [F (R) hv]2 and hv. The bandgap of CdS in ETS-10 was noticeably slightly reduced when compared with the as-synthesized CdS (8 nm) due to the formation of cluster arrays on the pores of ETS-10.

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