海水淡化
膜
聚酰胺
纳米尺度
材料科学
磁导率
聚合物
化学工程
纳米技术
化学
复合材料
工程类
生物化学
作者
Tyler E. Culp,Biswajit Khara,Kaitlyn P. Brickey,Michael Geitner,Tawanda J. Zimudzi,Jeffrey D. Wilbur,Steven Jons,Abhishek Roy,Mou Paul,Baskar Ganapathysubramanian,Andrew L. Zydney,Manish Kumar,Enrique D. Gomez
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2021-01-01
卷期号:371 (6524): 72-75
被引量:190
标识
DOI:10.1126/science.abb8518
摘要
Finding the path to better desalination Polyamide membranes have been used in large-scale desalination for decades. However, because of the thinness of the membranes and their internal variability, it has been hard to determine which aspects of the membranes most affect their performance. Culp et al. combined electron tomography, nanoscale three-dimensional (3D) polyamide density mapping, and modeling of bulk water permeability with zero adjustable parameters to quantify the effect of 3D nanoscale variations in polymer mass on water transport within the polyamide membrane (see the Perspective by Geise). They found that variability in local density most affects the performance of the membranes. Better synthesis methods could thus improve performance without affecting selectivity. Science , this issue p. 72 ; see also p. 31
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