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Removal of Lead by Oxidized Graphite

Department of Chemistry, University of Jaffna, Sir. Pon Ramanathan Road, Thirunelvely, Jaffna 40000, Sri Lanka
Department of Materials, Imperial College London, London SW7 2AZ, UK
Author to whom correspondence should be addressed.
Received: 9 January 2021 / Revised: 15 February 2021 / Accepted: 17 February 2021 / Published: 20 February 2021
Lead ion adsorption on the surfaces of pristine and oxidized graphite is studied quantitatively using X-ray photoelectron spectroscopy (XPS) and standard electrochemical measurements. The XPS analysis confirmed the oxidation of graphite, yielding a final composite consisting of 15.97% of oxygen and 84.03% of carbon in comparison with the pristine graphite powder consisting of 6.13% oxygen and 93.87% carbon. The adsorption of lead (II) ion was confirmed by the peaks observed at 138 eV and 143.8 eV, associated with the emissions from Pb4f 7/2 and Pb4f 5/2, respectively. The effective concentration of Pb2+ ion and the optimum dosage of oxidized graphite were calculated to be 400 µM and 200 mg, respectively. Adsorption capacity of bare graphite was 41.18%, whereas that of oxidized graphite was 73.3%. The present results show that graphite oxide is a candidate material for the adsorption of Pb2+ ion from water. View Full-Text
Keywords: oxidized graphite; lead adsorption; XPS analysis; surface oxidized graphite; lead adsorption; XPS analysis; surface
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MDPI and ACS Style

Selvanantharajah, N.; Iyngaran, P.; Abiman, P.; Kuganathan, N. Removal of Lead by Oxidized Graphite. C 2021, 7, 23.

AMA Style

Selvanantharajah N, Iyngaran P, Abiman P, Kuganathan N. Removal of Lead by Oxidized Graphite. C. 2021; 7(1):23.

Chicago/Turabian Style

Selvanantharajah, Namasivayam; Iyngaran, Poobalasuntharam; Abiman, Poobalasingam; Kuganathan, Navaratnarajah. 2021. "Removal of Lead by Oxidized Graphite" C 7, no. 1: 23.

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