The Effect of Voltage Charging on the Transport Properties of Gold Nanotube Membranes

Porous membranes are typically used in chemical separations and in many electrochemical processes and devices. Research on the transport properties of a unique class of porous membranes that contain monodisperse gold nanotubes traversing the entire membrane thickness is reviewed here. These gold nan...

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Published inSmall (Weinheim an der Bergstrasse, Germany) Vol. 14; no. 18
Main Authors Experton, Juliette, Martin, Charles R.
Format Journal Article
LanguageEnglish
Published United States Wiley 26.01.2018
Subjects
electric field gradients
gold nanotube membranes
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
NANOSCIENCE AND NANOTECHNOLOGY
permselectivity
transport
voltage charging
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Summary:Porous membranes are typically used in chemical separations and in many electrochemical processes and devices. Research on the transport properties of a unique class of porous membranes that contain monodisperse gold nanotubes traversing the entire membrane thickness is reviewed here. These gold nanotubes can act as conduits for ionic and molecular transports through the membrane. Because the tubes are electronically conductive, they can be electrochemically charged by applying a voltage to the membrane. How this “voltage charging” works with the transport properties of gold nanotube membranes is the subject of this Review. Experiments demonstrating that voltage charging can be used to reversibly switch the membrane between ideally cation- and anion-transporting states are reviewed. Voltage charging can also be used to enhance the ionic conductivity of gold nanotube membranes. Finally, voltage charging to accomplish electroporation of living bacteria as they pass through gold nanotube membranes is reviewed.
Bibliography:USDOE Office of Science (SC), Basic Energy Sciences (BES)
SC0001160; DESC0001160
ISSN:1613-6810
1613-6829