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        首頁學術活動 【環境論壇】Water and ion transport of 2D laminar membranes in water treatment(水處理中水與離子在2維層流膜中的遷移)
        【環境論壇】Water and ion transport of 2D laminar membranes in water treatment(水處理中水與離子在2維層流膜中的遷移)
        來源:環境學院    作者:環境學院    發表時間:2019-06-18     瀏覽次數:

         

        報告題目: Water and ion transport of 2D laminar membranes in water

        treatment

        報 告 人: Professor Xiwang Zhang(張西旺)

          位: Department of Chemical Engineering at Monash University,

        Australia(澳大利亞莫納什大學化學工程系)

          間: 20190622日,上午9:00-11:00

          點: 學研B0502

        邀 請 人:環境科學與工程學院王毅力教授

         

        環境論壇張西旺.jpg


        報告人簡介:

         

        Xiwang Zhang is a Professor in Department of Chemical Engineering at Monash University, Australia and the Director of Australian Research Council (ARC) Research Hub for Energy-efficient Separation. He received his PhD in Chinese Academy of Sciences in 2006. His research interests focus on membrane and advanced oxidation technologies for water treatment. Prof. Zhang was the receipt of the prestigious ARC Australian Research Fellowship and Monash Larkins Fellowship. Prof. Zhang has authored and co-authored more than 130 peer-reviewed journal papers, including Energy & Environmental Science, Nature Communications, Advanced Materials, J. Am. Chem. Soc, Advanced functional materials, Angew. Chem. Int. Ed., Applied Catalysis B, Water Research, Chemical Communications, Environmental Science & Technology, Journal of Membrane science, etc. The total citation is over 6,300 times (GS) and the H-index is 41.

         


        摘 要

        Since two-dimensional (2D) materials were discovered, particularly graphene and graphene oxide (GO),intensive efforts have been made on utilising these materials as building blocks to form laminar membranes via various methods. The unique 2D channels in these laminar membranes offer a new approach to control the mass transport, which have some promising potentials in various applications, e.g. energy harvesting, seawater desalination, organic solvent separation and dehydration. The nanochannels of these membranes, formed between 2D GO nanosheets, allow species with smaller sizes than those of the channels to permeate, while blocking all other larger species. Although laminar GO membranes have been intensively investigated, they are not stable in aqueous solutions due to the hydration of hydrophilic GO nanosheets, which results in very poor salt rejection. New experimental and simulation results found that either reducing GO to rGO or chemical cross-linking could improve the stability of graphene-based laminar membranes and dramatically increase the salt rejection, particularly NaCl rejection for seawater desalination. The water flux and salt rejection can be further tuned by tailoring the internal geometries of these membranes via various methods, such as creating artificial nanopores, increasing the number of intrinsic nanowrinkles, adding cation spacers and exploring other 2D materials.

         

        歡迎各位老師和同學參加

                                                                                                           


                                                                                                                                                                                                                                                                                                        環境科學與工程學院

                                                                                                                                                                                                                                                                                                          2019617




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