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

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [2];  [3];  [4];  [5];  [2]
  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, School of Environment Harbin Institute of Technology Harbin 150090 P. R. China
  2. 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
  3. Department of Civil Engineering the University of Hong Kong Pokfulam 999077 Hong Kong
  4. School of Environment Harbin Institute of Technology Harbin 150090 P. R. China
  5. Chemical Sciences and Engineering Division and Center for Molecular Engineering Argonne National Laboratory Lemont IL 60439 USA, Advanced Materials for Energy‐Water Systems Energy Frontier Research Center (AMEWS EFRC) Argonne National Laboratory Lemont IL 60439 USA
Abstract

Pressure‐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)/Mn 2+ ‐mediated mineralization method is reported for universally engineering a superhydrophilic hierarchical MnO 2 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.

Sponsoring Organization:
USDOE
OSTI ID:
2203142
Alternate ID(s):
OSTI ID: 2203144
OSTI ID: 2481041
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 49 Vol. 35; ISSN 0935-9648
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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