Engineering In Situ Catalytic Cleaning Membrane Via Prebiotic‐Chemistry‐Inspired Mineralization

Author:

Yang Xiaobin12,Wen Yajie1,Li Yangxue1,Yan Linlin1,Tang Chuyang Y.3,Ma Jun2,Darling Seth B.45ORCID,Shao Lu1

Affiliation:

1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China

2. School of Environment Harbin Institute of Technology Harbin 150090 P. R. China

3. Department of Civil Engineering the University of Hong Kong Pokfulam 999077 Hong Kong

4. Chemical Sciences and Engineering Division and Center for Molecular Engineering Argonne National Laboratory Lemont IL 60439 USA

5. Advanced Materials for Energy‐Water Systems Energy Frontier Research Center (AMEWS EFRC) Argonne National Laboratory Lemont IL 60439 USA

Abstract

AbstractPressure‐driven membrane separation promises a sustainable energy‐water nexus but is hindered by ubiquitous fouling. Natural systems evolved from prebiotic chemistry offer a glimpse of creative solutions. Herein, a prebiotic‐chemistry‐inspired aminomalononitrile (AMN)/Mn2+‐mediated mineralization method is reported for universally engineering a superhydrophilic hierarchical MnO2 nanocoating to endow hydrophobic polymeric membranes with exceptional catalytic cleaning ability. Green hydrogen peroxide catalytically triggered in‐situ cleaning of the mineralized membrane and enabled operando flux recovery to reach 99.8%. The mineralized membrane exhibited a 9‐fold higher recovery compared to the unmineralized membrane, which is attributed to active catalytic antifouling coupled with passive hydration antifouling. Electron density differences derived from the precursor interaction during mediated mineralization unveiled an electron‐rich bell‐like structure with an inner electron‐deficient Mn core. This work paves the way to construct multifunctional engineered materials for energy‐efficient water treatment as well as for diverse promising applications in catalysis, solar steam generation, biomedicine, and beyond.

Funder

Harbin Institute of Technology

China Postdoctoral Science Foundation

Office of Science

National Postdoctoral Program for Innovative Talents

Science Fund for Distinguished Young Scholars of Heilongjiang Province

National Natural Science Foundation of China

Energy Frontier Research Centers

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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