Single-layer graphyne membranes for super-excellent brine separation in forward osmosis

作者: Xin Zhang , Jing-Gang Gai

DOI: 10.1039/C5RA09512C

关键词:

摘要: Forward osmosis (FO) technology has shown great promise in sea water desalinization and power generation from the mixing of fresh seawater estuaries. However, desalination efficiency density level present FO systems are very low owing to flux commercial membranes. In this study, we report brine separation performance single-layer graphyne-N (N = 3, 4, 5, 6) membranes a forward system by molecular dynamics simulation. Our calculations show that graphyne-3 not only can achieve high up about 39.15 L cm−2 h−1, which is three four orders magnitude higher than conventional osmotic membranes, but also perfect salt rejection rate. The results indicate structural characteristics charge properties these as well distribution pattern both molecules ions each system, main factors affect graphyne Besides, found formation hydrated basic reason for solutions. Graphyne have good prospects separation, regeneration-free applications salinity FO.

参考文章(59)
Jan Eliasson, The rising pressure of global water shortages Nature. ,vol. 517, pp. 6- 6 ,(2015) , 10.1038/517006A
Steven W. Cranford, Markus J. Buehler, Mechanical properties of graphyne Carbon. ,vol. 49, pp. 4111- 4121 ,(2011) , 10.1016/J.CARBON.2011.05.024
Sukang Bae, Hyeongkeun Kim, Youngbin Lee, Xiangfan Xu, Jae-Sung Park, Yi Zheng, Jayakumar Balakrishnan, Tian Lei, Hye Ri Kim, Young Il Song, Young-Jin Kim, Kwang S Kim, Barbaros Özyilmaz, Jong-Hyun Ahn, Byung Hee Hong, Sumio Iijima, None, Roll-to-roll production of 30-inch graphene films for transparent electrodes Nature Nanotechnology. ,vol. 5, pp. 574- 578 ,(2010) , 10.1038/NNANO.2010.132
T CATH, A CHILDRESS, M ELIMELECH, Forward osmosis: Principles, applications, and recent developments Journal of Membrane Science. ,vol. 281, pp. 70- 87 ,(2006) , 10.1016/J.MEMSCI.2006.05.048
Jeffrey R. Mccutcheon, Menachem Elimelech, Modeling water flux in forward osmosis: Implications for improved membrane design Aiche Journal. ,vol. 53, pp. 1736- 1744 ,(2007) , 10.1002/AIC.11197
Soumitra Kar, R.C. Bindal, P.K. Tewari, Carbon nanotube membranes for desalination and water purification: Challenges and opportunities Nano Today. ,vol. 7, pp. 385- 389 ,(2012) , 10.1016/J.NANTOD.2012.09.002
Jing-Gang Gai, Xiao-Lei Gong, Wei-Wei Wang, Xin Zhang, Wu-Li Kang, An ultrafast water transport forward osmosis membrane: porous graphene Journal of Materials Chemistry. ,vol. 2, pp. 4023- 4028 ,(2014) , 10.1039/C3TA14256F
Ben Corry, Designing Carbon Nanotube Membranes for Efficient Water Desalination Journal of Physical Chemistry B. ,vol. 112, pp. 1427- 1434 ,(2008) , 10.1021/JP709845U
Qu Yue, Shengli Chang, Jun Kang, Shiqiao Qin, Jingbo Li, Mechanical and Electronic Properties of Graphyne and Its Family under Elastic Strain: Theoretical Predictions Journal of Physical Chemistry C. ,vol. 117, pp. 14804- 14811 ,(2013) , 10.1021/JP4021189
Jean-Marie Ducéré, Christine Lepetit, Remi Chauvin, Carbo-graphite: Structural, Mechanical, and Electronic Properties Journal of Physical Chemistry C. ,vol. 117, pp. 21671- 21681 ,(2013) , 10.1021/JP4067795