Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange

Lu Gan; Songmin Shang; Enling Hu; Chun Wah Marcus Yuen; Shou-xiang Kinor Jiang

doi:10.1016/j.apsusc.2015.09.106

Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange

Lu Gan, Songmin Shang, Enling Hu, Chun Wah Marcus Yuen, Shou-xiang Kinor Jiang

Research output: Journal article publication › Journal article › Academic research › peer-review

102 Citations (Scopus)

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.

Original language	English
Pages (from-to)	866-872
Number of pages	7
Journal	Applied Surface Science
Volume	357
DOIs	https://doi.org/10.1016/j.apsusc.2015.09.106
Publication status	Published - 1 Dec 2015

Keywords

Dyes adsorption performance
Graphene oxide
Hydrogel
Konjac glucomannan

ASJC Scopus subject areas

Surfaces, Coatings and Films

More information

10.1016/j.apsusc.2015.09.106

Scopus Link

Cite this

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title = "Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange",

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.",

keywords = "Dyes adsorption performance, Graphene oxide, Hydrogel, Konjac glucomannan",

author = "Lu Gan and Songmin Shang and Enling Hu and Yuen, {Chun Wah Marcus} and Jiang, {Shou-xiang Kinor}",

year = "2015",

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language = "English",

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journal = "Applied Surface Science",

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Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange. / Gan, Lu; Shang, Songmin; Hu, Enling; Yuen, Chun Wah Marcus; Jiang, Shou-xiang Kinor.

In: Applied Surface Science, Vol. 357, 01.12.2015, p. 866-872.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Konjac glucomannan/graphene oxide hydrogel with enhanced dyes adsorption capability for methyl blue and methyl orange

AU - Gan, Lu

AU - Shang, Songmin

AU - Hu, Enling

AU - Yuen, Chun Wah Marcus

AU - Jiang, Shou-xiang Kinor

PY - 2015/12/1

Y1 - 2015/12/1

N2 - 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.

AB - 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.

KW - Dyes adsorption performance

KW - Graphene oxide

KW - Hydrogel

KW - Konjac glucomannan

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DO - 10.1016/j.apsusc.2015.09.106

M3 - Journal article

VL - 357

SP - 866

EP - 872

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

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