journal article·2020-02-25

Metallic Liquid Gating Membranes

Alexander B. Tesler, Zhizhi Sheng, Wei Lv, Yi Fan, David Fricke, Kyoo-Chul Park, Jack Alvarenga, Joanna Aizenberg, Xu Hou

ACS Nano· Volume 14· Issue 2
Publisher page

Abstract

The development of liquid gating membrane (LGM) systems with tunable multiphase selectivity and antifouling properties is limited by the mechanical stability of the membrane materials. The mechanical integrity of most polymeric membranes can be compromised by deformation under harsh operating conditions (elevated temperatures, corrosive environments, foulants, etc.), ultimately leading to their failure. Here, a facile electrochemical approach to the fabrication of multifunctional metal-based liquid gating membrane systems is presented. The membrane porosity, pore size, and membrane surface roughness can be tuned from micro- to nanometer scale, enabling function under a variety of operating conditions. The prepared LGMs demonstrate controllable gas–liquid selectivity, superior resistance to corrosive conditions and fouling chemicals, and significant reduction of the transmembrane pressure required for the separation process, resulting in lower energy consumption. The stability of the gating liquid is confirmed experimentally through sustained fouling resistance and further supported by the interfacial energy calculations. The mechanically robust metal-based membrane systems reported in this study significantly extend the operating range of LGMs, prompting their applications in water treatment processes such as wastewater treatment, degassing, and multiphase separation.
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Research context

OpenAlex topics: Membrane Separation Technologies · Membrane-based Ion Separation Techniques · Fuel Cells and Related Materials

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

Affiliations

College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China

John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States

Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02138, United States

Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Materials Research, Jiujiang Research Institute, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China

College of Chemistry and Chemical Engineering, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China

Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States

Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Ministry of Defense · Natural Science Foundation of Fujian Province · Advanced Research Projects Agency - Energy · National Natural Science Foundation of China · Center for Nanoscale Systems, Harvard University · Key Laboratory of Bioinspired Materials and Interfacial Science · Northwestern Center for Water Research, Northwestern University · Wyss Institute for Biologically Inspired Engineering, Harvard University

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