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Towards single-species selectivity of membranes with subnanometre pores

Journal Article · · Nature Nanotechnology (Online)
 [1];  [2];  [2];  [3];  [2]
  1. Yale Univ., New Haven, CT (United States); Israel Inst. of Technology, Haifa (Israel)
  2. Yale Univ., New Haven, CT (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Merced, CA (United States)
Synthetic membranes with pores at the subnanometre scale are at the core of processes for separating solutes from water, such as water purification and desalination. While these membrane processes have achieved substantial industrial success, the capability of state-of-the-art membranes to selectively separate a single solute from a mixture of solutes is limited. Such high-precision separation would enable fit-for-purpose treatment, improving the sustainability of current water-treatment processes and opening doors for new applications of membrane technologies. In this paper, we introduce the challenges of state-of-the-art membranes with subnanometre pores to achieve high selectivity between solutes. Here, we then analyse experimental and theoretical literature to discuss the molecular-level mechanisms that contribute to energy barriers for solute transport through subnanometre pores. We conclude by providing principles and guidelines for designing next-generation single-species selective membranes that are inspired by ion-selective biological channels.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Enhanced Nanofluidic Transport (CENT); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-07NA27344; SC0019112
OSTI ID:
1716592
Alternate ID(s):
OSTI ID: 1867080
Report Number(s):
LLNL-JRNL-816256; 997018
Journal Information:
Nature Nanotechnology (Online), Journal Name: Nature Nanotechnology (Online) Vol. 15; ISSN 1748-3395
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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