A5077470089- NMR spectroscopy and applications
- Advanced MRI Techniques and Applications
- Surfactants and Colloidal Systems
- Nonlinear Dynamics and Pattern Formation
- Rheology and Fluid Dynamics Studies
- Electrochemical Analysis and Applications
- Electron Spin Resonance Studies
- Advanced NMR Techniques and Applications
- Advancements in Battery Materials
- Magnetism in coordination complexes
- Photochemistry and Electron Transfer Studies
- Lanthanide and Transition Metal Complexes
- Analytical Chemistry and Chromatography
- Crystallization and Solubility Studies
- Material Dynamics and Properties
- Ionic liquids properties and applications
- Advanced Neuroimaging Techniques and Applications
- Spectroscopy and Quantum Chemical Studies
- Atomic and Subatomic Physics Research
- Advanced Battery Technologies Research
- Enhanced Oil Recovery Techniques
- 3D Printing in Biomedical Research
- Polysaccharides Composition and Applications
- Protein Interaction Studies and Fluorescence Analysis
- Pickering emulsions and particle stabilization
University of Birmingham
2016-2025
University of Manchester
2024
The Faraday Institution
2023
The Edgbaston Hospital
2015-2020
University of Cambridge
1972-2006
University of Oxford
1972-2006
University of Leeds
2005
University of Nottingham
2000-2001
Massey University
1997-2000
University of Surrey
1997
Abstract Ion-conducting polymer membranes are essential in many separation processes and electrochemical devices, including electrodialysis 1 , redox flow batteries 2 fuel cells 3 electrolysers 4,5 . Controlling ion transport selectivity these largely hinges on the manipulation of pore size. Although membrane structures can be designed dry state 6 they redefined upon hydration owing to swelling electrolyte solutions. Strategies control a deeper understanding structure evolution vital for...
Abstract Membrane-based separation processes hold great promise for sustainable extraction of lithium from brines the rapidly expanding electric vehicle industry and renewable energy storage. However, it remains challenging to develop high-selectivity membranes that can be upscaled industrial processes. Here we report solution-processable polymer with subnanometre pores excellent ion selectivity in electrodialysis extraction. Polymers intrinsic microporosity incorporated hydrophilic...
Using NMR microscopy we measure the velocity distribution for a wormlike surfactant solution in gap of small angle cone-and-plate rheometer. This system, cetylpyridinium chloride/sodium salicylate 100 mM/60 mM, exhibits biphasic shear band structure when applied rate exceeds critical strain beyond which plateau is observed stress. The characterized by two low/high interfaces and region high evolves increasing width as average increased.
Abstract Sodium-ion batteries are a promising battery technology for their cost and sustainability. This has led to increasing interest in the development of new sodium-ion analytical methods non-invasively, directly visualise chemistry. Here we report operando 1 H 23 Na nuclear magnetic resonance spectroscopy imaging experiments observe speciation distribution sodium electrode electrolyte during sodiation desodiation hard carbon metal cell full-cell configuration. The evolution subsequent...
Abstract Demand for low carbon energy storage has highlighted the importance of imaging techniques characterization electrode microstructures to determine key parameters associated with battery manufacture, operation, degradation, and failure both next generation lithium other novel systems. Here, recent progress literature highlights from magnetic resonance, neutron, X‐ray, focused ion beam, scanning transmission electron microscopy are summarized. Two major trends identified: First, use...
The drive to develop better electrochemical energy storage devices requires the development of not only new materials, but also understanding underpinning chemical and dynamical processes within such during operation, for which analytical techniques are required. Currently, there few that can probe local composition transport in electrolyte battery operation. In this paper, we report a novel application magnetic resonance imaging (MRI) probing model cell. Using MRI, zinc oxygen...
This paper reports the size of reverse micelles (RMs) in AOT/octane/H(2)O and CTAB/hexanol/H(2)O microemulsions using magnetic resonance (MR) pulsed field gradient (PFG) measurements diffusion. Diffusion data were measured stimulated echo (PGSTE) experiment for surfactant molecules residing RM interface. Inverse Laplace transformation these generated diffusion coefficients RMs, which converted into hydrodynamic radii Stokes-Einstein relation. technique is complementary to those previously...
A new peptide sequence (MB1) has been designed which, in the presence of a trivalent lanthanide ion, programmed to self-assemble form three stranded metallo-coiled coil, Ln(III)(MB1)3. The binding site incorporated into hydrophobic core using natural amino acids, restricting water access lanthanide. resulting terbium coiled coil displays luminescent properties consistent with lack first coordination sphere molecules. Despite this gadolinium be reported, promising magnetic resonance contrast...
Abstract The development of improved energy‐storage devices, as well corrosion prevention and metal‐electrofinishing technologies, requires knowledge local composition transport behaviour in electrolytes near bulk metals, situ real time. It remains a challenge to acquire such data new analytical methods are required. Recent work shows that magnetic resonance imaging (MRI) is able map concentration gradients visualise electrochemical processes cells containing metals. This recent work, along...
In complex colloidal systems, particle-poor regions can develop within particle-rich phases during sedimentation or creaming. These are overlooked by 1D profiles, which typically used to assess particle distributions in a sample. Alternative methods visualise and quantify these required better understand phase separation, is the focus of this paper. Magnetic resonance imaging has been monitor development compositional heterogeneity vesicle-polymer mixture undergoing T2 relaxation time maps...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation M. Britton, R. W. Mair, K. Lambert, P. T. Callaghan; Transition to shear banding in pipe Couette flow of wormlike micellar solutions. Journal Rheology 1 July 1999; 43 (4): 897–909. https://doi.org/10.1122/1.551008 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Melanie M. Britton, Paul T. Callaghan; Nuclear magnetic resonance visualization of anomalous flow in cone-and-plate rheometry. J. Rheol. 1 November 1997; 41 (6): 1365–1386. https://doi.org/10.1122/1.550846 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks...
The size, shape, and composition of reverse micelles (RMs) in a cetyltrimethylammonium bromide (CTAB)/pentanol/n-hexane/water microemulsion were investigated using pulsed gradient stimulated echo (PGSTE) nuclear magnetic resonance (NMR) measurements molecular modeling. PGSTE data collected at observation times (Δ) 10, 40, 450 ms. At long times, CTAB pentanol exhibited single diffusion coefficients. However, short (Δ ≤ 40 ms) both slow fast These NMR indicate that molecules reside different...
Quantitative mapping of metal ions freely diffusing in solution is important across a diverse range disciplines and particularly significant for dissolution processes batteries, corrosion, electroplating/polishing manufactured components. However, most current techniques are invasive, requiring sample extraction, insertion an electrode, application electric potential or the inclusion molecular sensor. Thus, there need to visualize distribution non-invasively, situ, quantitatively, three...
Abstract The increasing demand for alkali metal‐ion batteries necessitates efficient and sustainable recycling solutions both end‐of‐life production scrap. This study introduces a novel, cost‐effective, scalable electrode delamination technique, termed “ice‐stripping,” which employs sub‐zero freezing to achieve near‐complete (>90%) recovery of coatings. Water is sprayed onto the surface placed on surface; water freezes, forming strong interfacial bond coating cold plate. enables current...
Lanthanide binding site translation linearly along a coiled coil has large impact on stability, coordination chemistry, and MRI relaxivity.
Proton NMR relaxation times have been used to probe the pH of water inside reverse micelles a cetyltrimethylammonium bromide (CTAB)−hexanol−aq microemulsion. T2 were found change with pH; however, T1 remained unaffected. This behavior was attributed acid-catalyzed exchange between protons and hydroxyl cosurfactant hexanol. The rate its influence on time water, micelle, investigated as function water-to-surfactant ratio (ω0) ionic strength. pH-dependent also observed for two other...
The rheology, and underpinning colloidal interactions, of ionic liquid (IL) dispersions silica have been investigated using bulk rheological measurements with magnetic resonance (MR) velocity relaxation measurements. Two liquids were investigated: tetradecyl(trihexyl)phosphonium bistriflamide ([P6,6,6,14][NTf2]) 1-butyl-methylimidizolium tetrafluoroborate ([C4mim][BF4]), in the absence presence hydrophilic nanoparticles (Aerosil 200). Bulk rheology was probed shear stress viscosity as a...