Electrochemical Interfacial Polymerization toward Ultrathin COF Membranes for Brine Desalination

Meidi Wang; Yutong Wang; Junyi Zhao; Jiyu Zou; Xu Liang; Ziting Zhu; Jiashi Zhu; Hongjian Wang; Yuhan Wang; Fusheng Pan; Zhongyi Jiang

doi:10.1002/anie.202219084

Electrochemical Interfacial Polymerization toward Ultrathin COF Membranes for Brine Desalination

Angew Chem Int Ed Engl. 2023 Mar 20;62(13):e202219084. doi: 10.1002/anie.202219084. Epub 2023 Feb 17.

Authors

Meidi Wang^{1

2}, Yutong Wang^{1

2}, Junyi Zhao^{1

2

3}, Jiyu Zou^{1

2}, Xu Liang^{1

2}, Ziting Zhu^{1

2}, Jiashi Zhu^{1

2}, Hongjian Wang^{1

2}, Yuhan Wang^{1

2}, Fusheng Pan^{1

2}, Zhongyi Jiang^{1

2

3}

Affiliations

¹ Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
² Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300072, China.
³ Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong, 522000, China.

PMID: 36738172
DOI: 10.1002/anie.202219084

Abstract

Ultrathin covalent organic framework (COF) membranes are urgently demanded in molecular/ionic separations. Herein, we reported an electrochemical interfacial polymerization strategy to fabricate ultrathin COF membranes with thickness of 85 nm, by actively manipulate self-healing effect and self-inhibiting effect. The resulting COF membrane exhibited superior performance in brine desalination with the permeation flux of 92 kg m^-2 h^-1 and the rejection of 99.96 %. Our electrochemical interfacial polymerization strategy enriches the fabrication approach of COF membranes and facilitates the rational design of ultrathin membranes.

Keywords: Covalent Organic Frameworks; Desalination; Electrochemical Interfacial Polymerization; Ultrathin Membranes.

Abstract

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