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Influence of Zn/Fe molar ratio on optical and magnetic properties of ZnO and ZnFe2O4 nanocrystal as calcined products of layered double hydroxides


Citation

Ali Ahmed, Abdullah Ahmed and Talib, Zainal Abidin and Hussein, Mohd Zobir and Flaifel, Moayad Husein and Al-Hada, Naif Mohammed (2014) Influence of Zn/Fe molar ratio on optical and magnetic properties of ZnO and ZnFe2O4 nanocrystal as calcined products of layered double hydroxides. Journal of Spectroscopy, 2014. art. no. 732163. pp. 1-6. ISSN 2314-4920; ESSN: 2314-4939

Abstract / Synopsis

The coprecipitation method has been used to synthesize layered double hydroxide (Zn-Fe-LDH) nanostructure at different Zn2+/Fe3+ molar ratios. The structural properties of samples were studied using powder X-ray diffraction (PXRD). LDH samples were calcined at 600°C to produce mixed oxides (ZnO and ZnFe2O4). The crystallite size of mixed oxide was found in the nanometer scale (18.1 nm for ZnFe2O4 and 43.3 nm for ZnO). The photocatalytic activity of the calcination products was investigated using ultraviolet-visible-near infrared (UV-VIS-NIR) diffuse reflectance spectroscopy. The magnetic properties of calcined LDHs were investigated using a vibrating sample magnetometer (VSM). The calcined samples showed a paramagnetic behavior for all Zn2+/Fe3+ molar ratios. The effect of molar ratio on magnetic susceptibility of the calcined samples was also studied.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: 10.1155/2014/732163
Publisher: Hindawi Publishing Corporation
Keywords: Zn; Fe; Molar ratio; Nanocrystal; Calcined product; Layered double hydroxides
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 09 Dec 2015 10:58
Last Modified: 15 Feb 2016 16:26
URI: http://psasir.upm.edu.my/id/eprint/34206
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