Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces
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2021Access:
openAccessCitation:
T. A. Butcher, L. Prendeville, A. Rafferty, P. Tryik, P. Boillat and J. M. D. Coey,, Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces, Journal of Physical Chemistry C, 2021 Oct 14;125(40):21831-21839Download Item:
2107.02770.pdf (PDF) 4.782Mb
Abstract:
The electrosorption of Gd3+ ions from an aqueous 70 mM Gd(NO3)3 solution in monolithic carbon aerogel electrodes was recorded by dynamic neutron imaging. The aerogels have a bimodal pore size distribution consisting of macropores and mesopores centered at 115 and 15 nm, respectively. After the uptake of Gd3+ ions by the negatively charged surface of the porous structure, an inhomogeneous magnetic field was applied to the system of discharging electrodes. This led to a convective flow and confinement of Gd(NO3)3 solution in the magnetic field gradient. Thus, a way to desalt and capture paramagnetic ions from an initially homogeneous solution is established.
Sponsor
Grant Number
Irish Research Council (IRC)
GOIPG/2019/4430
European Union (EU)
766007 MAMI
Science Foundation Ireland (SFI)
16/IA/4534 ZEMS
Author's Homepage:
http://people.tcd.ie/venkatemhttp://people.tcd.ie/jcoey
Description:
PUBLISHED
Author: Venkatesan, Munuswamy; Coey, John
Sponsor:
Irish Research Council (IRC)European Union (EU)
Science Foundation Ireland (SFI)
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Journal of Physical Chemistry C;125;
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Full text availableSubject (TCD):
Nanoscience & Materials , FABRICATION , NANOSTRUCTURES , Nanotechnology , PhysicsDOI:
https://doi.org/10.1021/acs.jpcc.1c06031ISSN:
1932-7447The following license files are associated with this item: