期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 56, 期 4, 页码 2572-2581出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.1c04373
关键词
membrane design; machine learning; Bayesian optimization; Morgan fingerprint; water/salt selectivity
资金
- National Science Foundation [ECCS-2025462, 1936928, 2112533]
- U.S. Department of Agriculture [2018-68011-28371]
- National Science Foundation-U.S. Department of Agriculture [2020-67021-31526]
- U.S. Environmental Protection Agency [840080010]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [2112533] Funding Source: National Science Foundation
- Div Of Engineering Education and Centers
- Directorate For Engineering [1936928] Funding Source: National Science Foundation
This study introduces a novel strategy for designing polymeric membranes using machine learning and Bayesian optimization to identify optimal monomer and fabrication condition combinations to surpass existing limits in water/salt selectivity and permeability. Experimental results demonstrate that this approach exceeds current technological boundaries and opens up new possibilities for next-generation separation membrane design.
Polymeric membrane design is a multidimensional process involving selection of membrane materials and optimization of fabrication conditions from an infinite candidate space. It is impossible to explore the entire space by trial-and-error experimentation. Here, we present a membrane design strategy utilizing machine learning-based Bayesian optimization to precisely identify the optimal combinations of unexplored monomers and their fabrication conditions from an infinite space. We developed ML models to accurately predict water permeability and salt rejection from membrane monomer types (represented by the Morgan fingerprint) and fabrication conditions. We applied Bayesian optimization on the built ML model to inversely identify sets of monomer/fabrication condition combinations with the potential to break the upper bound for water/salt selectivity and permeability. We fabricated eight membranes under the identified combinations and found that they exceeded the present upper bound. Our findings demonstrate that ML-based Bayesian optimization represents a paradigm shift for next-generation separation membrane design.
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