Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1804708115 |
Electron tomography reveals details of the internal microstructure of desalination membranes | |
Culp, Tyler E.1; Shen, Yue-xiao1; Geitner, Michael1; Paul, Mou2; Roy, Abhishek3; Behr, Michael J.4; Rosenberg, Steve5; Gu, Junsi6; Kumar, Manish1; Gomez, Enrique D.1,7,8 | |
2018-08-28 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:35页码:8694-8699 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | As water availability becomes a growing challenge in various regions throughout the world, desalination and wastewater reclamation through technologies such as reverse osmosis (RO) are becoming more important. Nevertheless, many open questions remain regarding the internal structure of thin-film composite RO membranes. In this work, fully aromatic polyamide films that serve as the active layer of state-of-the-art water filtration membranes were investigated using high-angle annular dark-field scanning transmission electron microscopy tomography. Reconstructions of the 3D morphology reveal intricate aspects of the complex microstructure not visible from 2D projections. We find that internal voids of the active layer of compressed commercial membranes account for less than 0.2% of the total polymer volume, contrary to previously reported values that are two orders of magnitude higher. Measurements of the local variation in polyamide density from electron tomography reveal that the polymer density is highest at the permeable surface for the two membranes tested and establish the significance of surface area on RO membrane transport properties. The same type of analyses could provide explanations for different flux variations with surface area for other types of membranes where the density is distributed differently. Thus, 3D reconstructions and quantitative analyses will be crucial to characterize the complex morphology of polymeric membranes used in next-generation water-purification membranes. |
英文关键词 | reverse osmosis polyamide transmission electron microscopy tomography voids |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442861600042 |
WOS关键词 | REVERSE-OSMOSIS MEMBRANES ; POLYAMIDE THIN-FILMS ; STREAMING POTENTIAL MEASUREMENTS ; ATOMIC-FORCE MICROSCOPY ; RO MEMBRANES ; INTERFACIAL POLYMERIZATION ; PHYSIOCHEMICAL PROPERTIES ; NANOFILTRATION MEMBRANES ; SCANNING-ELECTRON ; SEAWATER DESALINATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204977 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA; 2.Dow Chem Co USA, Lake Jackson, TX 77566 USA; 3.Dow Chem Co USA, Freeport, TX 77541 USA; 4.Dow Chem Co USA, Analyt Sci, Midland, MI 48667 USA; 5.DowDuPont, Water Solut, Edina, MN 55439 USA; 6.Dow Chem Co USA, Analyt Sci, Collegeville, PA 19426 USA; 7.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA; 8.Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Culp, Tyler E.,Shen, Yue-xiao,Geitner, Michael,et al. Electron tomography reveals details of the internal microstructure of desalination membranes[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(35):8694-8699. |
APA | Culp, Tyler E..,Shen, Yue-xiao.,Geitner, Michael.,Paul, Mou.,Roy, Abhishek.,...&Gomez, Enrique D..(2018).Electron tomography reveals details of the internal microstructure of desalination membranes.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(35),8694-8699. |
MLA | Culp, Tyler E.,et al."Electron tomography reveals details of the internal microstructure of desalination membranes".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.35(2018):8694-8699. |
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