DataVXAdvanced Functional MaterialsPaper
journal article·2025-04Open access

2D Vermiculite Nanolaminated Membranes for Efficient Organic Solvent Nanofiltration

Wensen Wang, Xishun Hao, Youguo Yan, Rong Sun, Eddy Petit, Mathilde Moderne, Ji Li, Jiefeng Liu, Huali Wu, Kun Qi, Camilo Zamora‐Ledezma, Christian Narváez‐Muñoz, Camille Bakkali Hassani, Luc Lajaunie, Philippe Miele, Chrystelle Salameh, Zhiyuan Zeng, Damien Voiry

Advanced Functional Materials· Volume 35· Issue 16
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Source abstract

Abstract

Abstract Membrane separation technology has found widespread application in molecular sieving and water reclamation. Its use in organic solvent nanofiltration (OSN) has been limited by the modest permeation rates and stability of existing membranes. In this study, 2D clay nanolaminated membranes are engineered, derived from the stacking of exfoliated vermiculite nanosheets, as a potential solution for OSN. The as‐synthesized clay membrane displayed limited stability in both water and solvents due to rapid hydration or solvation of the nanosheets. To enhance the membrane's stability and sieving capabilities, cations of various valences (K+, Na+, Mg2+, Ca2+, Fe3+) are intercalated into the interlayer of the clay nanosheets. The resulting cation‐treated clay membranes display considerable enhancement in structural stability in both aqueous and organic media. Subsequently, the solvent transport behavior and separation performance of these clay membranes are evaluated and described by molecular dynamic simulation and experiments. It is identified that Fe‐intercalated nanolaminates demonstrate controllable stacking order, resulting in enhanced sieving performance with a rejection rate of over 95% for Methyl Orange and a methanol permeation rate of ≈165 L m−2 h−1 bar−1 [LMHB]. The findings of this work pave the way for the practical applications of 2D nanolaminated clay membranes in OSN.
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Research context

Nanomaterials

OpenAlex topics: Membrane Separation Technologies · Membrane Separation and Gas Transport · Membrane-based Ion Separation Techniques

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

Affiliations

Institut Européen des Membranes IEM UMR 5635 Univ Montpellier ENSCM CNRS Montpellier 34000 France

School of Materials Science and Engineering China University of Petroleum Qingdao 266580 P. R. China

Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica Instituto Universitario de Investigación de Microscopía Electrónica y Materiales (IMEYMAT) Facultad de Ciencias Universidad de Cádiz Campus Río San Pedro S/N, Puerto Real Cádiz 11510 Spain

Higher Polytechnic School UAX ‐ Universidad Alfonso X el Sabio Avda. Universidad 1 Villanueva de la Cañada 28691 Madrid Spain

Centre Internacional de Mètodes Numérics en Enginyeria (CIMNE) C/Gran Capitán s/n Campus Nord UPC – Universitat Politècnica de Catalunya Barcelona 08034 Spain

ICGM Université Montpellier CNRS ENSCM Montpellier 34000 France

Department of Materials Science and Engineering and State Key Laboratory of Marine Pollution City University of Hong Kong Hong Kong 999077 P. R. China

Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 P. R. China

Funding

European Commission · Ministerio de Asuntos Económicos y Transformación Digital, Gobierno de España · China Scholarship Council · H2020 European Research Council · Agence Nationale de la Recherche

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