| Title: | Polymeric Membranes with Selective Solution-Diffusion for Intercepting Volatile Organic Compounds during Solar-Driven Water Remediation |
| Author(s): | Qi D; Liu Y; Liu Y; Liu Z; Luo Y; Xu H; Zhou X; Zhang J; Yang H; Wang W; Chen X; |
| Address: | "MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Laboratory of Urban Water Resource and Environments, Harbin Institute of Technology, Harbin, 150090, China. Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China. Innovative Center for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore" |
| ISSN/ISBN: | 1521-4095 (Electronic) 0935-9648 (Linking) |
| Abstract: | "Solar evaporation through a photothermal porous material provides a feasible and sustainable method for water remediation. Several photothermal materials have been developed to enhance solar evaporation efficiency. However, a critical limitation of current photothermal materials is their inability to separate water from the volatile organic compounds (VOCs) present in wastewater. Here, a microstructured ultrathin polymeric membrane that enables freshwater separation from VOC pollutants by solar evaporation with a VOC removal rate of 90%, is reported. The different solution-diffusion behaviors of water and VOCs with polymeric membranes facilitate their separation. Moreover, owing to increased light absorption, enlarged liquid-air interface, and shortened mass transfer distance, the microstructured and ultrathin configuration of the membrane helps to balance the tradeoff between permeation selectivity and water production capacity. The membrane is not only effective for evaporation of simulated volatile pollutants in a prototype, but can also intercept complex volatile organic contaminants in natural water sources and produce water that meets drinking-water standards. With practical demonstration and satisfactory purification performance, this work paves the way for practical application of solar evaporation for effective water remediation" |
| Keywords: | microstructured membranes photothermal materials solar evaporation volatile organic compounds water purification; |
| Notes: | "PubMed-not-MEDLINEQi, Dianpeng Liu, Yan Liu, Yuanbin Liu, Zhiyuan Luo, Yifei Xu, Hongbo Zhou, Xin Zhang, Jingjing Yang, Hui Wang, Wei Chen, Xiaodong eng 52070052/National Natural Science Foundation of China/ 51903068/National Natural Science Foundation of China/ 51761145031/National Natural Science Foundation of China/ NRF2017NRFNSFC001-048/Singapore National Research Foundation/ YQ2020E011/Natural Science Foundation of Heilongjiang Province/ Germany 2020/11/11 Adv Mater. 2020 Dec; 32(50):e2004401. doi: 10.1002/adma.202004401. Epub 2020 Nov 9" |
