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Removal of Lead by Oxidized Graphite

1
Department of Chemistry, University of Jaffna, Sir. Pon Ramanathan Road, Thirunelvely, Jaffna 40000, Sri Lanka
2
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. https://0-doi-org.brum.beds.ac.uk/10.3390/c7010023

AMA Style

Selvanantharajah N, Iyngaran P, Abiman P, Kuganathan N. Removal of Lead by Oxidized Graphite. C. 2021; 7(1):23. https://0-doi-org.brum.beds.ac.uk/10.3390/c7010023

Chicago/Turabian Style

Selvanantharajah, Namasivayam; Iyngaran, Poobalasuntharam; Abiman, Poobalasingam; Kuganathan, Navaratnarajah. 2021. "Removal of Lead by Oxidized Graphite" C 7, no. 1: 23. https://0-doi-org.brum.beds.ac.uk/10.3390/c7010023

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