Encapsulation of CdS/ZnO Hybrid Nanoparticles in Zeolite Y and its Photocatalytic Studies

Abstract:

The recent development of nanoparticles in commercial media has great attention due to uniformity and stability of the materials. In our present investigation cadmium sulfide (CdS), a direct bandgap semiconductor material has well defined optoelectronic properties in the applications of photocatalysis, photoelectrocatalytic and nonlinear optics. Zeolite which offers a perfect host material for the production of highly uniform nanoparticles with apparently circulated provisions and inhibiting the aggregation of nanoparticles and also helps in the protection from the attack by water and other reactive compounds. In order to stabilize the CdS nanoparticles and to prevent their aggregations, CdS is sheltered within the zeolite Y material. This novel assembly was synthesized by ion exchange method. In order to increase the photocatalytic activity of CdS, ZnO nanoparticles were incorporated into the zeolite Y assembly. The photocatalytic activity of the CdS/ZnO-Y towards the degradation of methyl orange was investigated under the visible light; it follows pseudo first order kinetics. After incorporation the composite loaded assembly (CdS/ZnO-Y) exhibits a superior photocatalytic activity due to the suppressed recombination rate of photogenerated charge carriers due to the synergy between the two semiconductor species. The as synthesized sample was characterized by UV DRS, FTIR and PL techniques.

• Periodical: Nano Hybrids and Composites (Volume 17)
• Pages: 246-255
• DOI: https://doi.org/10.4028/www.scientific.net/NHC.17.246
• Online since: August 2017
• Authors: A. Akila, S. Chandra Mohan, S. Karuppusamy, K. Jothivenkatachalam*
• Keywords: CdS Nanoparticles, Methyl Orange, Photocatalyst, Zeolite NaY, ZnO Nanoparticles

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