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One-pot hydrothermal synthesis and characterization of FeS2 (pyrite)/graphene nanocomposite


Golsheikh, Amir Moradi and Huang, Nay Ming and Lim, Hong Ngee and Chia, Chin Hua and Harrison, Ian and Muhamad, Muhamad Rasat (2013) One-pot hydrothermal synthesis and characterization of FeS2 (pyrite)/graphene nanocomposite. Chemical Engineering Journal, 218. pp. 276-284. ISSN 1385-8947; ESSN: 1873-3212


This work reports on the investigation of temperature, reaction time, pH, concentration of graphene oxide (GO) and the effect of gelatin on the synthesis of pyrite structured FeS2 nanoparticles assembled on graphene nanosheets using a facile ‘one-pot’ hydrothermal method. The results of X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and electron microscopy confirmed the simultaneous formation of pyrite structured FeS2 and the reduction of GO, yielding a nanocomposite of the materials, through the hydrothermal process. The systematic investigation shows that the nanocomposite, comprising a uniform distribution of nanoparticles on the surface of the graphene sheets, is easily synthesized, providing that certain reaction criteria are achieved. The condition warrants that the reaction is carried out in the presence of gelatin with a concentration of 1.5 wt.%/v in a pH of 11 at 200 °C for 24 h. Photocurrent response of the samples showed that the nanocomposite with the GO concentration of 1 mg/mL produced the highest photocurrent value of about 1.01 μA, which is about 2.6 times higher than that obtained by the pure FeS2.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1016/j.cej.2012.09.082
Publisher: Elsevier
Keywords: Gelatin; Graphene; Hydrothermal; Nanocomposite; Pyrite
Depositing User: Umikalthom Abdullah
Date Deposited: 29 May 2014 08:27
Last Modified: 21 Mar 2016 12:54
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.cej.2012.09.082
URI: http://psasir.upm.edu.my/id/eprint/29986
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