Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/56079
Title: Study on the relationship between the oxidation degree of GO and the adsorption capacity for Pb2+
Authors: Xiao, Liu
Zihang, Zhou
Qi, Lisi
Yan, Liu
Keywords: Adsorption;Graphite oxide;Oxidation degree;Pb2+
Issue Date: Nov-2020
Publisher: NISCAIR-CSIR, India
Abstract: In this study, four kinds of graphite oxide (GO) with different oxidation degree have been prepared by a modified Hummers method, by changing the amount of oxidation agent KMnO4. To investigate the relationship between the oxidation degree of GO and the adsorption capacity for heavy metal irons, Pb2+ solution has been selected as a model waste water. The effects of initial Pb2+ concentration, solution pH and contact time on the adsorption capacity of series GO have been studied. It is found that the adsorption capacity does not always increase with the increasing of oxidation degree. The adsorption process of series GO for Pb2+ are well described by the Langmuir isotherm model, which reveales that the adsorption process is homogeneous monolayer coverage.
Page(s): 461-469
URI: http://nopr.niscair.res.in/handle/123456789/56079
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.27(6) [November 2020]

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