Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43359
Title: Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange
Authors: Gan, L 
Shang, S 
Hu, E 
Yuen, CWM 
Jiang, SX 
Keywords: Dyes adsorption performance
Graphene oxide
Hydrogel
Konjac glucomannan
Issue Date: 1-Dec-2015
Publisher: Elsevier
Source: Applied surface science, 1 Dec. 2015, v. 357, pt. A, p. 866-872 How to cite?
Journal: Applied surface science 
Abstract: In the present study, the graphene oxide (GO) filled konjac glucomannan (KGM) hydrogel was prepared by using calcium oxide as the crosslinker. The structure of the prepared KGM/GO hydrogel was characterized. The prepared hydrogel was then used to adsorb methyl orange (MO) and methyl blue (MB) in aqueous solutions. Due to the presence of GO, KGM/GO hydrogel showed much enhanced adsorbing performance to both MO and MB compared to neat KGM hydrogel. The adsorption kinetics of the hydrogel was studied. The prepared hydrogel fitted for the pseudo-second-order kinetics model better. The adsorption isotherm of the MO and MB onto KGM/GO hydrogel was also studied and the results suggested that the both MO and MB adsorption behaviors fitted for the Freundlich isotherm model better. The prepared KGM/GO has application potentials to be as the adsorbent for water purifications.
URI: http://hdl.handle.net/10397/43359
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2015.09.106
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