Our group member Sin-Yuen Chang has passed her PhD viva subject to very minor corrections, and has already submitted the revised thesis, titled “Studies of Metal Speciation and Nucleation in Complex Functional Liquid Systems“. Sin-Yuen has already taken up a position at Diamond Light Source, and a visiting appointment at the University of Leeds, through which she will continue to collaborate with our team. Congratulations , Dr Chang!
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 Comments are closed  Alumni, Awards, Group Members  analytical, catalysis, crystal growth, electronic structure, liquid-liquid interface, nanoparticle, nuclear fuel, nucleation, spectroscopy, XANES, XAS Under leadership of Akihiro Uehara a combined electrochemical/X-ray absorption spectroscopy study deconstructing the famous Brust-Schiffrin synthesis of gold nanoparticles has been carried out. The results elucidates some of the transformations taking place during this two-phase synthesis. The results show that the reaction at the oil-water interface includes a time dependent evolution of the Au(I) species formed as intermediates, and identifies the nature of the (also time dependent) thiolate side products. Electrochemical Insight into the Brust-Schiffrin Synthesis of Au Nanoparticles Comments are closed Papers analytical, electrochemistry, gold, liquid-liquid interface, nanoparticle, nucleation, speciation, spectroscopy, voltammetry, XANES, XAS The group has had a good run of publications this year. So far our 2015 output of papers includes:
Comments are closed Papers analytical, catalysis, co-crystals, crystal growth, gold, H-bond, liquid-liquid interface, nanoparticle, NEXAFS, nucleation, spectroscopy, surface analysis, wastewater, XANES, XAS, XPS On Friday, 22 March 2013 our group member Matt Thomason passed his PhD examination subject to minor corrections in his PhD thesis, Soft X-ray Spectroscopy of Molecular Species in Solution: Studies of Imidazole and Imidazole/Water Systems. Congratulations Matt! One comment - (Comments are closed) Awards, Group Members analytical, computational, crystallography, electronic structure, H-bond, imidazole, NEXAFS, nucleation, surface analysis, XANES, XAS A windowless electrochemical cell for the spectroscopic investigation of the liquid-liquid interface, using a dual droplet configuration, has been designed. The setup permits in situ probing of the bulk solutions and the interfacial region by fibre-optic UV-vis spectroscopy, microfocus X-ray fluorescence (XRF) elemental mapping, and microfocus X-ray absorption near-edge structure (micro-XANES) spectroscopy. The electrodeposition of Au, induced by ion transfer of the tetrachloroaurate complex from a halogenated solvent (containing a weak reducing agent) to the aqueous phase, has been monitored by a combination of the three techniques. The reaction can be followed in-situ by UV-vis spectroscopy by detecting the oxidised form of the reducing agent. Voltammetric evidence suggests the formation of interfacial Au(I) species, whereas micro-XANES detect the presence of metallic Au(0). In Situ Spectroelectrochemistry at Free-Standing Liquid-Liquid Interfaces: UV-vis Spectroscopy, Microfocus X-ray Absorption Spectroscopy and Fluorescence Imaging Comments are closed Papers electrochemistry, electronic structure, instrumentation, liquid-liquid interface, nanoparticle, nanotechnology, spectroscopy, surface analysis, UV/Vis, XAS Roger and Sven, together with Joop ter Horst (University of Delft), have published a review in Angewandte Chemie: Nucleation of Organic Crystals – A Molecular Perspective German version: Keimbildung organischer Kristalle aus molekularer Sichtweise Comments are closed Papers analytical, clusters, crystal growth, H-bond, nucleation, organic crystals, polymorphism, solid state NMR, spectroscopy, UV/Vis, XANES, XAS, XPS, XRD The first publication from the EPSRC/NSF collaboration has appeared in press: Inhibited and Enhanced Nucleation of Gold Nanoparticles at the Water|1,2-Dichloroethane Interface Comments are closed Papers analytical, electrochemistry, gold, liquid-liquid interface, nanoparticle, nucleation, solvation, spectroscopy, synchrotron, XANES, XAS Congratulations to our research group member Luanga Nchari, who has now fulfilled all requirements for the award of his PhD degree on mechanistic studies of chiral amplification reactions with dialkylzinc reagents. Comments are closed Awards, Group Members catalysis, chiral amplification, EXAFS, homogeneous catalysis, organometallics, Soai reaction, synchrotron, XANES, XAS
More information is available by following this link. Comments are closed Awards, Research Support analytical, catalysis, co-crystals, conservation science, crystal growth, crystallography, descriptors, electronic structure, energy, environmental, formulation, H-bond, Heritage Science, NEXAFS, nucleation, oxides, pharmaceuticals, polymorphism, salts, spectroscopy, surface analysis, synchrotron, XAS, XPS  Photograph (c) University of Lund A warm welcome to Dr Monika Walczak, who will join us in May as a postdoctoral research associate to work with X-ray spectroscopies on the surface chemistry of large organic molecules used as corrosion inhibitors. Monika joins us coming from her current appointment at the Polish Academy of Sciences and she will work both with our team and Rob Lindsay’s in the School of Materials. Comments are closed Group Members adsorption, corrosion, electronic structure, oxides, steel, XAS, XPS |
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