ORCID Profile
0000-0003-1340-0970
Current Organisation
Culham Centre for Fusion Energy
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Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CC07678B
Abstract: A facile molten-salt (MS) route for the scalable synthesis of free-standing, long-range oriented and corrugated graphene-like sheets from a copper phthalocyanine (CuPc) precursor is reported. Their unique arrangement and transformation behavior in molten potassium chloride (KCl) play a key role in promoting the successful synthesis of the anisotropic nanostructure.
Publisher: American Chemical Society (ACS)
Date: 16-10-2017
Abstract: Laminar membranes of two-dimensional materials are excellent candidates for applications in water filtration due to the formation of nanocapillaries between in idual crystals that can exhibit a molecular and ionic sieving effect, while allowing high water flux. This approach has been exemplified previously with graphene oxide, however these membranes suffer from swelling when exposed to liquid water, leading to low salt rejection and reducing their applicability for desalination applications. Here, we demonstrate that by producing thin (∼5 μm) laminar membranes of exfoliated molybdenum disulfide (MoS
Publisher: IOP Publishing
Date: 11-12-2019
Abstract: Laminar MoS 2 membranes show outstanding potential for practical applications in energy conversion/storage, sensing, and as nanofluidic devices. The re-stacking of exfoliated MoS 2 creates nanocapillaries between the layers of MoS 2 nanosheets. These MoS 2 membranes have been shown to possess a unique combination of ionic rejection properties, high water permeation rates, and long-term solvent stability, with no significant swelling when exposed to aqueous or organic solvents. Chemical modification of MoS 2 membranes has been shown to improve their ionic rejection properties, however the mechanism behind this improvement is not well understood. In this work, we elucidate the ion-sieving mechanism by the study of potential-dependent ion transport through functionalized MoS 2 membranes. The ionic permeability of the MoS 2 membrane is transformed by chemical functionalization with a simple naphthalene sulfonate dye (sunset yellow) and with a resultant attenuation of permeability by at least an order of magnitude, compared to the pristine MoS 2 membranes and permeability reported for graphene oxide and Ti 3 C 2 T x (MXene) membranes. The effects of pH, solute concentration, and ionic size/charge on the ionic selectivity of the functionalized MoS 2 membranes are also reported. Understanding the mechanism of ionic sieving within functionalized MoS 2 membranes will enable future applications in electro-dialysis and ion exchange for water treatment technologies.
Publisher: Elsevier BV
Date: 07-2018
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Eric Prestat.