Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions

Jian Wang; Wen Yao; Pengcheng Gu; Shujun Yu; Xiangxue Wang; Yi Du; Hongqing Wang; Zhongshan Chen; Tasawar Hayat; Xiangke Wang

doi:10.1007/s10570-016-1176-7

Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions

Jian Wang
, Wen Yao
, Pengcheng Gu
, Shujun Yu
, Xiangxue Wang
, Yi Du
, Hongqing Wang
, Zhongshan Chen
, Tasawar Hayat
, Xiangke Wang

North China Electric Power University
University of South China
Faculty of Sciences, King Abdulaziz University

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

14 Scopus citations

Abstract

In this study, chitosan–metal oxide composites (CS–MO) were prepared for graphene oxide (GO) removal from aqueous solutions. The results showed that the GO coagulation on CS–MO was dependent on pH and ionic strength. The maximum GO removal capacities reached 442.5 mg/g on CS–Al₂O₃, 425.0 mg/g on CS–ZnO and 421.2 mg/g on CS–MgO, respectively, showing a huge advantage in the efficient elimination of GO from natural water system. The coagulation of GO on CS–MO was dominated by electrostatic attraction in acidic conditions and by hydrogen bonds in neutral and alkaline conditions. The findings are helpful to improve the current understanding of the environmental behavior of GO in natural aqueous systems.

Original language	English
Pages (from-to)	851-861
Number of pages	11
Journal	Cellulose
Volume	24
Issue number	2
DOIs	https://doi.org/10.1007/s10570-016-1176-7
State	Published - 1 Feb 2017
Externally published	Yes

Keywords

Chitosan–metal oxides
Coagulation
Graphene oxide
Mechanism

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10.1007/s10570-016-1176-7

Cite this

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title = "Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions",

abstract = "In this study, chitosan–metal oxide composites (CS–MO) were prepared for graphene oxide (GO) removal from aqueous solutions. The results showed that the GO coagulation on CS–MO was dependent on pH and ionic strength. The maximum GO removal capacities reached 442.5 mg/g on CS–Al2O3, 425.0 mg/g on CS–ZnO and 421.2 mg/g on CS–MgO, respectively, showing a huge advantage in the efficient elimination of GO from natural water system. The coagulation of GO on CS–MO was dominated by electrostatic attraction in acidic conditions and by hydrogen bonds in neutral and alkaline conditions. The findings are helpful to improve the current understanding of the environmental behavior of GO in natural aqueous systems.",

keywords = "Chitosan–metal oxides, Coagulation, Graphene oxide, Mechanism",

author = "Jian Wang and Wen Yao and Pengcheng Gu and Shujun Yu and Xiangxue Wang and Yi Du and Hongqing Wang and Zhongshan Chen and Tasawar Hayat and Xiangke Wang",

note = "Publisher Copyright: {\textcopyright} 2016, Springer Science+Business Media Dordrecht.",

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doi = "10.1007/s10570-016-1176-7",

language = "English",

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TY - JOUR

T1 - Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions

AU - Wang, Jian

AU - Yao, Wen

AU - Gu, Pengcheng

AU - Yu, Shujun

AU - Wang, Xiangxue

AU - Du, Yi

AU - Wang, Hongqing

AU - Chen, Zhongshan

AU - Hayat, Tasawar

AU - Wang, Xiangke

PY - 2017/2/1

Y1 - 2017/2/1

N2 - In this study, chitosan–metal oxide composites (CS–MO) were prepared for graphene oxide (GO) removal from aqueous solutions. The results showed that the GO coagulation on CS–MO was dependent on pH and ionic strength. The maximum GO removal capacities reached 442.5 mg/g on CS–Al2O3, 425.0 mg/g on CS–ZnO and 421.2 mg/g on CS–MgO, respectively, showing a huge advantage in the efficient elimination of GO from natural water system. The coagulation of GO on CS–MO was dominated by electrostatic attraction in acidic conditions and by hydrogen bonds in neutral and alkaline conditions. The findings are helpful to improve the current understanding of the environmental behavior of GO in natural aqueous systems.

AB - In this study, chitosan–metal oxide composites (CS–MO) were prepared for graphene oxide (GO) removal from aqueous solutions. The results showed that the GO coagulation on CS–MO was dependent on pH and ionic strength. The maximum GO removal capacities reached 442.5 mg/g on CS–Al2O3, 425.0 mg/g on CS–ZnO and 421.2 mg/g on CS–MgO, respectively, showing a huge advantage in the efficient elimination of GO from natural water system. The coagulation of GO on CS–MO was dominated by electrostatic attraction in acidic conditions and by hydrogen bonds in neutral and alkaline conditions. The findings are helpful to improve the current understanding of the environmental behavior of GO in natural aqueous systems.

KW - Chitosan–metal oxides

KW - Coagulation

KW - Graphene oxide

KW - Mechanism

UR - https://www.scopus.com/pages/publications/85007248604

U2 - 10.1007/s10570-016-1176-7

DO - 10.1007/s10570-016-1176-7

M3 - Article

AN - SCOPUS:85007248604

SN - 0969-0239

VL - 24

SP - 851

EP - 861

JO - Cellulose

JF - Cellulose

IS - 2

ER -

Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions

Abstract

Keywords

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