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Open Access Nano Express

An assessment of zinc oxide nanosheets as a selective adsorbent for cadmium

Sher Bahadar Khan12*, Mohammed M Rahman12, Hadi M Marwani12, Abdullah M Asiri12 and Khalid A Alamry2

Author affiliations

1 Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia

2 Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia

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Citation and License

Nanoscale Research Letters 2013, 8:377  doi:10.1186/1556-276X-8-377

Published: 5 September 2013

Abstract

Zinc oxide nanosheet is assessed as a selective adsorbent for the detection and adsorption of cadmium using simple eco-friendly extraction method. Pure zinc oxide nanosheet powders were characterized using field emission scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The zinc oxide nanosheets were applied to different metal ions, including Cd(II), Cu(II), Hg(II), La(III), Mn(II), Pb(II), Pd(II), and Y(III). Zinc oxide nanosheets were found to be selective for cadmium among these metal ions when determined by inductively coupled plasma-optical emission spectrometry. Moreover, adsorption isotherm data provided that the adsorption process was mainly monolayer on zinc oxide nanosheets.

Keywords:
Zinc oxide; Nanosheets; Metal uptake; Cd(II); Environmental applications