High performance agar/graphene oxide composite aerogel for methylene blue removal

Long Chen; Yanhui Li; Qiuju Du; Zonghua Wang; Yanzhi Xia; Emily Yedinak; Jun Lou; Lijie Ci

doi:10.1016/j.carbpol.2016.08.047

High performance agar/graphene oxide composite aerogel for methylene blue removal

Long Chen
, Yanhui Li^*
, Qiuju Du
, Zonghua Wang
, Yanzhi Xia
, Emily Yedinak
, Jun Lou
, Lijie Ci

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

303 Scopus citations

Abstract

A novel three-dimensional (3D) agar/graphene oxide (AGO) composite aerogel was prepared by a vacuum freeze drying method. The AGO aerogel was tested for its adsorption capacity of methylene blue (MB) and was found to have a maximum adsorption capacity of 578 mg/g, as determined from the Langmuir isotherm. The adsorption kinetic studies revealed that adsorption followed pseudo-second-order model. The thermodynamic parameters calculated from the Van't Hoff equation indicate that the adsorption was an endothermic and spontaneous process. The adsorption mechanism may be attributed to electrostatic interaction between MB and AGO aerogel. Furthermore, the AGO aerogel can easily be recycled with a dilute NaOH solution wash, retaining over 91% of the adsorption capacity after recycling three times.

Original language	English
Pages (from-to)	345-353
Number of pages	9
Journal	Carbohydrate Polymers
Volume	155
DOIs	https://doi.org/10.1016/j.carbpol.2016.08.047
State	Published - 2 Jan 2017
Externally published	Yes

Keywords

Adsorption
Aerogel
Desorption
Graphene oxide
Methylene blue

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10.1016/j.carbpol.2016.08.047

Cite this

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title = "High performance agar/graphene oxide composite aerogel for methylene blue removal",

abstract = "A novel three-dimensional (3D) agar/graphene oxide (AGO) composite aerogel was prepared by a vacuum freeze drying method. The AGO aerogel was tested for its adsorption capacity of methylene blue (MB) and was found to have a maximum adsorption capacity of 578 mg/g, as determined from the Langmuir isotherm. The adsorption kinetic studies revealed that adsorption followed pseudo-second-order model. The thermodynamic parameters calculated from the Van't Hoff equation indicate that the adsorption was an endothermic and spontaneous process. The adsorption mechanism may be attributed to electrostatic interaction between MB and AGO aerogel. Furthermore, the AGO aerogel can easily be recycled with a dilute NaOH solution wash, retaining over 91\% of the adsorption capacity after recycling three times.",

keywords = "Adsorption, Aerogel, Desorption, Graphene oxide, Methylene blue",

author = "Long Chen and Yanhui Li and Qiuju Du and Zonghua Wang and Yanzhi Xia and Emily Yedinak and Jun Lou and Lijie Ci",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

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day = "2",

doi = "10.1016/j.carbpol.2016.08.047",

language = "英语",

volume = "155",

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journal = "Carbohydrate Polymers",

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TY - JOUR

T1 - High performance agar/graphene oxide composite aerogel for methylene blue removal

AU - Chen, Long

AU - Li, Yanhui

AU - Du, Qiuju

AU - Wang, Zonghua

AU - Xia, Yanzhi

AU - Yedinak, Emily

AU - Lou, Jun

AU - Ci, Lijie

PY - 2017/1/2

Y1 - 2017/1/2

N2 - A novel three-dimensional (3D) agar/graphene oxide (AGO) composite aerogel was prepared by a vacuum freeze drying method. The AGO aerogel was tested for its adsorption capacity of methylene blue (MB) and was found to have a maximum adsorption capacity of 578 mg/g, as determined from the Langmuir isotherm. The adsorption kinetic studies revealed that adsorption followed pseudo-second-order model. The thermodynamic parameters calculated from the Van't Hoff equation indicate that the adsorption was an endothermic and spontaneous process. The adsorption mechanism may be attributed to electrostatic interaction between MB and AGO aerogel. Furthermore, the AGO aerogel can easily be recycled with a dilute NaOH solution wash, retaining over 91% of the adsorption capacity after recycling three times.

AB - A novel three-dimensional (3D) agar/graphene oxide (AGO) composite aerogel was prepared by a vacuum freeze drying method. The AGO aerogel was tested for its adsorption capacity of methylene blue (MB) and was found to have a maximum adsorption capacity of 578 mg/g, as determined from the Langmuir isotherm. The adsorption kinetic studies revealed that adsorption followed pseudo-second-order model. The thermodynamic parameters calculated from the Van't Hoff equation indicate that the adsorption was an endothermic and spontaneous process. The adsorption mechanism may be attributed to electrostatic interaction between MB and AGO aerogel. Furthermore, the AGO aerogel can easily be recycled with a dilute NaOH solution wash, retaining over 91% of the adsorption capacity after recycling three times.

KW - Adsorption

KW - Aerogel

KW - Desorption

KW - Graphene oxide

KW - Methylene blue

UR - https://www.scopus.com/pages/publications/84984673957

U2 - 10.1016/j.carbpol.2016.08.047

DO - 10.1016/j.carbpol.2016.08.047

M3 - 文章

C2 - 27702521

AN - SCOPUS:84984673957

SN - 0144-8617

VL - 155

SP - 345

EP - 353

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

ER -

High performance agar/graphene oxide composite aerogel for methylene blue removal

Abstract

Keywords

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