Cover Page May-2016-Advanced Materials Letters

Advanced Materials Letters

Volume 7, Issue 5, Pages 390-397, May 2016
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Rapid Homogenization Method For Synthesis Of Core/shell ZnO/CdS Nanoparticles And Their Photocatalytic Evaluation

Suraksha Rasal1, 2, Priyesh V. More1, Chaitanya Hiragond1, Sunita Jadhav2 and Pawan K. Khanna1*

1Nanochemistry/Nanomateirals Lab., Dept of Applied Chemistry, Defence Institute of Advanced Technology (DIAT), Govt. of India, Pune 411 025, India

2Department of Chemical Engineering, Bharati Vidyapeeth University, Katraj 411046, Pune, India

Adv. Mater. Lett., 2016, 7 (5), pp 390-397

DOI: 10.5185/amlett.2016.6334

Publication Date (Web): Apr 04, 2016

E-mail: pawankhanna2002@yahoo.co.in

Abstract

ZnO/CdS core-shell hetero nanostructures with different shell thickness have been successfully developed by a solution chemistry method employing rapid homogenization concept. The obtained core/shell nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDX), FTIR, Raman, photoluminescence (PL), and UV-visible spectroscopy. All analytical and spectroscopic tools supported the formation of CdS shell over ZnO core. ZnO/CdS core-shell nanostructures were evaluated for their photocatalytic activity against methylene blue (MB), a common industrial water pollutant. It was observed that the ZnO/CdS core-shell nanostructures can effectively function as a photocatalyst under both UV and sunlight for degradation of MB. It was also observed that the degradation of MB was higher from core/shell nanostructures than the physical mixture of ZnO-CdS which was prepared separately.

Keywords

Homogenization, core-shell QDs, photocatalysis, solution chemistry, dye degradation.

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