DataVXACS Applied Materials & InterfacesPaper
journal article·2018-05-30Open access

Robust Multilayer Graphene–Organic Frameworks for Selective Separation of Monovalent Anions

Yan Zhao, Jiajie Zhu, Jian Li, Zhijuan Zhao, Sebastian Ignacio Charchalac Ochoa, Jiangnan Shen, Congjie Gao, Bart Van der Bruggen

ACS Applied Materials & Interfaces· Volume 10· Issue 21
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Source abstract

Abstract

The chemical and mechanical stability of graphene nanosheets was used in this work to design a multilayer architecture of graphene, grafted with sulfonated 4,4′-diaminodiphenyl sulfone (SDDS). Quaternized poly(phenylene oxide) (QPPO) was synthesized and mixed with SDDS (rGO-SDDS-rGO@QPPO), yielding a multilayer graphene–organic framework (MGOF) with positive as well as negative functional groups that can be applied as a versatile electrodriven membrane in electrodialysis (ED). Multilayer graphene–organic frameworks are a new class of multilayer structures, with an architecture having a tunable interlayer spacing connected by cationic polymer material. MGOF membranes were demonstrated to allow for an excellent selective separation of monovalent anions in aqueous solution. Furthermore, different types of rGO-SDDS-rGO@QPPO membranes were found to have a good mechanical strength, with a tensile strength up to 66.43 MPa. The membrane (rGO-SDDS-rGO@QPPO-2) also has a low surface electric resistance (2.79 Ω·cm2) and a low water content (14.5%) and swelling rate (4.7%). In addition, the selective separation between Cl– and SO42– of the MGOF membranes could be as high as 36.6%.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersNanomaterials

OpenAlex topics: Covalent Organic Framework Applications · Membrane-based Ion Separation Techniques · Membrane Separation Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Membrane Separation and Water Science & Technology, Ocean College, Zhejiang University of Technology, Hangzhou 310014, P. R. China

Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium

Beijing Engineering Research Center of Process Pollution Control, Division of Environment Technology and Engineering, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China

Division of Engineering Sciences, CUNOC, University of San Carlos of Guatemala, Modulo G, Calle Rodolfo Robles 29-99 Zona 1, Quetzaltenango, Guatemala

Faculty of Engineering and the Built Environment, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa

Funding

Ministry of Science and Technology of the People's Republic of China · China Scholarship Council · National Natural Science Foundation of China

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