Synthesis and characterization of graphene oxide nanocomposite for water decontamination
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Date
2017
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Punjab Agricultural University, Ludhiana
Abstract
The present study focuses on synthesis of Graphene oxide and its nanocomposite
films for the removal of arsenic As (III)) from water. Preparation of Graphene oxide was
carried out by Modified Hummers method. Films of GO nanocomposites were prepared in
acetic acid solution by providing physical shear. The electron microscopy results of films
indicated that nanomaterials such as graphene oxide (GO) and graphene oxide-carbon
nanotubes (GO-CNTs) were well dispersed in chitosan nanoparticles (Ch) matrix. The
maximum adsorption capacity for As (III) was obtained to be 30.30, 25.00, 23.81 and 11.63
mg/g for GO, Ch film, GO/Ch film and GO-CNTs/Ch film respectively at optimum condition
(i.e. pH = 6, contact time = 20 minutes and temperature = 30°C). GO has high efficiency to
remove As (III) ion from contaminated water and also other adsorbents such as GO/Ch film
and GO-CNTs/Ch film show great potential in the field of water decontamination due to their
ability to be used in the form of thin film membrane. Thermodynamic parameters result
indicates that the adsorption processes is spontaneous and exothermic.
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