Title: Photocatalytic activity of pure and Ni-doped ZnO nanoparticles

Authors: D. Sridevi; K.V. Rajendran

Addresses: Department of Physics, Presidency College, Chennai-5, Tamilnadu, India. ' Department of Physics, Presidency College, Chennai-5, Tamilnadu, India

Abstract: Pure and Ni-doped ZnO nanoparticles were synthesised by using hydrothermal method. The microstructures of ZnO nanomaterials were characterised by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The optical absorption spectroscopy shows shift in band gap energies for Ni-doped ZnO nanocrystals. The room temperature photoluminescence (PL) spectroscopy shows dominant emission peaks in the visible region. Ni-doped ZnO nanoparticles exhibit better photocatalytic activity for the photocatalytic degradation of methyl orange, indicating that doped ZnO nanomaterials are promising material for photocatalyst.

Keywords: ZnO nanoparticles; Ni-doped ZnO; scanning electron microscopy; SEM; transmission electron microscopy; TEM; photoluminescence; PL; photocatalytic activity; zinc oxide; microstructure; photocatalysts; nanotechnology.

DOI: 10.1504/IJNP.2011.043500

International Journal of Nanoparticles, 2011 Vol.4 No.4, pp.381 - 388

Received: 29 Aug 2010
Accepted: 15 Dec 2010
Published online: 13 Mar 2015 *

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