Phone: +86 0755-2350 5289
NEWS News
Contact information

Telephone : +86 0755-2350 5289

Mail : service@topmembranes.com

Web : http://www.topmembranes.com

China · Shenzhen · Headquarters

Address : Tingwei Industrial Park, 6 Liufang Rd., Baoan District

Important breakthrough has been made in the study of the water transport mechanism of the nanotube.

Date: 2016-10-23
Author: network

According to the Chinese Academy of Sciences, October 19, 2016, recently, the research team of the University of Science and Technology of China has made important progress in water transport of graphene nanochannels in cooperation with Andre Geim, a Nobel Prize winner of physics and professor of the University of Manchester in the United Kingdom. Wang Fengchao, a special associate researcher at China University of Science and Technology, is the co-author of the paper.

As we all know, graphene is a two-dimensional crystal composed of carbon atoms with only one layer of atomic thickness. Graphene is not only the thinnest material, but also the surface is very smooth. Using this characteristic of graphene, researchers have proposed a new method to construct nanochannels. The size adjustment accuracy of the channels can be controlled at 0.34 nm, which is the smallest nanochannel ever prepared in the laboratory.

Nano-scale material transport has been one of the focuses of current experimental and theoretical research, especially when the channel size is small to the molecular level, the surface properties of the channel and solid-liquid interface interaction will play a decisive role in material transport. The results show that water moves at a high speed in a nearly frictionless state in the nanochannel, but the flow details and mechanism in the channel are difficult to characterize and analyze by current experimental methods. The core contribution of the research team of China University of Science and Technology in this work is: theoretical analysis and molecular simulation are used to study the water transport mechanism in nano-channels. It is found that the solid-liquid interface interaction at molecular scale will increase the driving force of water transport, thus greatly improving the water transport efficiency and making the fluid transport at nano-scale. The size effect is quite different from the macroscopic scale. The study reveals that the solid-liquid interface interaction has a decisive influence on the nano flow behavior.


石墨烯纳米通道;实验及模拟中观测到的纳米尺度水传输的尺寸效应;分子模拟中水在该纳米通道中的流动

Fig. 1. Graphene nanochannel; size effect of water transport at nanoscale observed in experiments and simulations; water flow in the nanochannel in molecular simulations


Nanochannels constructed precisely by two-dimensional materials, such as graphene, provide a new platform and ideas for nanoscale material transport. This study not only has a significant impact on the understanding and cognition of the fluid transport mechanism at nanoscale, but also provides important reference for the design and development of novel nanofluidic devices. The nanodevices based on the design scheme of the nanochannel will further enhance the applications of two-dimensional materials such as graphene in filtration, screening, seawater desalination and gas separation.


Latest News / More>>
2018 . 03 . 29
Clicks: 65
New metal-mesh membrane could solve longstanding problems and lead to inexpensive power storage.David L. Chandler | MIT News Office January 22, 2018A type of battery first invented nearly five de...
2018 . 03 . 29
Clicks: 36
Proponents of clean energy will soon have a new source to add to their existing array of solar, wind, and hydropower: osmotic power.BY ANTHONY CUTHBERTSON ON 7/14/16 AT 4:03 AMRiver mouths around the ...
2018 . 03 . 29
Clicks: 17
A graphene-based membrane could be used in countries that do not have the financial infrastructure to fund large desalination plants.BY ANTHONY CUTHBERTSON ON 4/4/17 AT 9:27 AMScientists have created ...
2018 . 03 . 29
Clicks: 27
February 16, 2017Posted in: Healthcare, IBM 5 in 5, SystemsJust last month, IBM released its “5 in 5” predictions, an exercise to identify five innovations that will have an impact on society in five ...
2018 . 03 . 29
Clicks: 11
Material can filter nanometer-sized molecules at 10 to 100 times the rate of commercial membranes.Jennifer Chu | MIT News Office June 28, 2017Dialysis, in the most general sense, is the process b...
2018 . 03 . 29
Clicks: 12
Department of Chemical Engineering Professor Zachary Smith is working on new polymeric membranes that can greatly reduce energy use in chemical separations.Eric Brown | MIT Industrial Liaison Program&...
WeChat
Phone
Tel: +86 0755-2350 5289
Email:service@topmembranes.com
Address:Tingwei Industrial Park, 6 Liufang Rd., Baoan District, Shenzhen, China
Fax:+86 0755-2788 8009
Copyright ©2018 - 2022 Shenzhen Top Membrane Technology Co., Ltd.
Rhino cloud offers enterprise cloud services