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Optical studies of capped CdSe nanoparticles and their photocatalytic activity for degradation of methylene blue dye

Published online by Cambridge University Press:  23 April 2013

Seyed Mohammad Taheri Otaqsara ,
Ebrhim Nemati-Kande  and
Ramin Barzegar
Seyed Mohammad Taheri Otaqsara*
Affiliation:
Young Research Club, Parsabad Mogan Branch, Islamic Azad University, Parsabad, Iran
Ebrhim Nemati-Kande
Affiliation:
Young Research Club, Parsabad Mogan Branch, Islamic Azad University, Parsabad, Iran
Ramin Barzegar
Affiliation:
Young Research Club, Parsabad Mogan Branch, Islamic Azad University, Parsabad, Iran
*
ae-mail: smt.otaqsara@gmail.com
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Abstract

Polyethylene glycol (PEG) and mercaptoethanol (ME)-capped CdSe nanoparticles (NPs) have been successfully prepared and systematic investigation on structural, optical and photocatalytic properties is presented. The intrinsic characteristics of resulting nanoparticles were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible and photoluminescence (PL) spectrophotometer. Cubic phase, nearly uniform size (∼10 nm) and spherical morphology of the synthesized nanoparticles were established through XRD and TEM analysis. Spectroscopic measurements exhibit that capping agent can effectively tune energy band structure. ME-capped CdSe NPs exhibit higher light emission efficiency as compared to PEG capping. Photocatalytic activity of CdSe nanoparticles on methylene blue (MB) dye, a significant enhancement was observed in the photodegradation efficiency. A maximum degradation of MB dye (73.5%) was obtained.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 62 , Issue 1 , April 2013 , 10404
Copyright
© EDP Sciences, 2013

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