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26.12.2016 | Original Paper

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

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

Erschienen in: Cellulose | Ausgabe 2/2017

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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.

Vorheriger Artikel A comparative study on lyocell-fabric based all-cellulose composite laminates produced by different processes

Nächster Artikel Controlling the status of corn cellulose solutions by ethanol to define fiber morphology during electrospinning

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Titel: Efficient coagulation of graphene oxide on chitosan–metal oxide composites from aqueous solutions
verfasst von: Jian Wang
Wen Yao
Pengcheng Gu
Shujun Yu
Xiangxue Wang
Yi Du
Hongqing Wang
Zhongshan Chen
Tasawar Hayat
Xiangke Wang
Publikationsdatum: 26.12.2016
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 2/2017
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-016-1176-7

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