Simulations of Tapered Channel in Multilayer Graphene as Reverse Osmosis Membrane for Desalination

被引：0

作者：

Tianzhen Wang

Bo Chen

Xingyu Shao

Huai Zheng

Xuejiao Hu

Haifeng Jiang

机构：

[1] Wuhan University,Key Laboratory of Hydraulic Machinery Transients (Wuhan University), Ministry of Education, School of Power and Mechanical Engineering

[2] Research Institute of Tsinghua University in Shenzhen,undefined

来源：

Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2022年 / 37卷

关键词：

multilayer graphene; molecular dynamics; tapered channel; opening angles; reverse osmosis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Pressure-driven reverse osmosis membrane has important application in seawater desalination. Inspired by the structure of aquaporin, we established and studied the mechanism of the structure of multilayer graphene with tapered channels as reverse osmosis. The water flux of multilayer graphene with tapered channels was about 20% higher than that of parallel graphene channel. The flow resistance model was established, and the relationship between flow resistance and opening angles was clarified. The relationship between flow resistance and outlet size was also described. By means of molecular dynamics simulation, slip coefficients of multilayer graphene with tapered channel were obtained and verified by the contact angle of water. Results show that the permeability of graphene with tapered channel is about three orders of magnitude higher than that of commercial reverse osmosis membrane and the desalination rate is 100%. Temperature difference between the two sides of the tapered channel will promote the water flux positively.

引用

页码：314 / 323

页数：9

共 174 条

[1]

Elimelech M(2011)The Future of Seawater Desalination: Energy, Technology, and the Environment [J] Science 333 712-717

[2]

Phillip W A(2013)Technical Review and Evaluation of the Economics of Water Desalination: Current and Future Challenges for Better Water Supply Sustainability[J] Desalination 309 197-207

[3]

Ghaffour N(2015)Emerging Desalination Technologies for Water Treatment: A Critical Review[J] Water Res. 75 164-187

[4]

Missimer T M(2015)Recent Advances in Utilization of Graphene for Filtration and Desalination of Water: A Review[J] Desalination 365 389-397

[5]

Amy G L(2019)Gram Scale and Room Temperature Functionalization of Boron Nitride Nanosheets for Water Treatment [J] Nano 14 1950107-517

[6]

Subramani A(2018)Enhanced Hydrophilicity and Water-Permeating of Functionalized Graphene-Oxide Nanopores: Molecular Dynamics Simulations[J] J. Membr. Sci. 550 510-722

[7]

Jacangelo J G(2019)Evaluating Graphene Oxide and Holey Graphene Oxide Membrane Performance for Water Purification[J] J. Membr. Sci. 588 117195-792

[8]

Aghigh A(2019)Effect of Graphene Surface Functional Groups on the Mechanical Property of Pmma Microcellular Composite Foams[J] J. Wuhan Univ. Technol. -Mater. Sci. Ed. 34 717-1013

[9]

Alizadeh V(2018)Study on Graphene Oxide Modified Inorganic Phase Change Materials and Their Packaging Behavior[J] J. Wuhan Univ. Technol. -Mater. Sci. Ed. 33 788-536

[10]

Wong H Y(2019)High Performance Reverse Osmosis Membrane with Carbon Nanotube Support Layer[J] J. Membr. Sci. 592 117358-3608

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