个人简介

Katherine Holt is Reader in Physical Chemistry and carries out multidisciplinary research in electrochemistry and studies of the solid-solution interface. Her group currently consists of 4 PhD students and 1 MSc student. Research within her group includes the use of electrochemical and spectroscopic techniques to explore how surface functionalities influence performance of carbon electrodes; the solution stability and reactivity of potential electrocatalysts for CO2 reduction; and surface redox and charging processes of insulating materials, of relevance to electrostatic charging and polymer degradation. She has worked at UCL since 2004 (2004-6: Ramsay Fellow; 2006-11: EPSRC Advanced Research Fellow; 2011-13: Lecturer; 2013: Reader). Before this, she was a postdoctoral research fellow at The University of Texas at Austin, working with Professor Allen J. Bard.

研究领域

Physical Chemistry and Chemical Physics

Redox chemistry of insulating materials and organic polymers. Surface redox chemistry of diamond materials. ATR-IR spectroscopy of the solid-solution interface. Carbon materials in electrochemistry. Electrochemistry to monitor respiratory processes in living cells. Scanning Electrochemical Microscopy (SECM) Cu-dithiocarbamate complexes for intracellular imaging and cancer treatment. Electrocatalytic proton reduction using bioinspired hydrogenase enzyme mimics. Reduction of CO2 using metal oxide and sulphide nanoparticle electrocatalysts. Redox chemistry of keratin. Degradation of polymers.

近期论文

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Ghosh, S., Rahaman, A., Holt, K. B., Nordlander, E., Richmond, M. G., Kabir, S. E., & Hogarth, G. (2016). Hydrogenase biomimetics with redox-active ligands: Electrocatalytic proton reduction by [Fe-2(CO)(4)(kappa(2)-diamine)(mu-edt)] (diamine=2,2 '-bipy, 1,10-phen). POLYHEDRON, 116, 127-135. doi:10.1016/j.poly.2016.05.015 Peltola, E., Wester, N., Holt, K. B., Johansson, L. S., Koskinen, J., Myllymäki, V., & Laurila, T. (2016). Nanodiamonds on tetrahedral amorphous carbon significantly enhance dopamine detection and cell viability. Biosensors & bioelectronics. doi:10.1016/j.bios.2016.08.055 Inel, G. A., Ungureau, E. -. M., Varley, T. S., Hirani, M., & Holt, K. B. (2016). Solvent-surface interactions between nanodiamond and ethanol studied with in situ infrared spectroscopy. DIAMOND AND RELATED MATERIALS, 61, 7-13. doi:10.1016/j.diamond.2015.11.001 Roldan, A., Hollingsworth, N., Roffey, A., Islam, H. -. U., Goodall, J. B. M., Catlow, C. R. A., . . . de Leeuw, N. H. (2015). Bio-inspired CO2 conversion by iron sulfide catalysts under sustainable conditions. CHEMICAL COMMUNICATIONS, 51 (35), 7501-7504. doi:10.1039/c5cc02078f Ghosh, S., Sanchez, B. E., Richards, I., Haque, M. N., Holt, K. B., Richmond, M. G., & Hogarth, G. (2015). Biomimetics of the [FeFe]-hydrogenase enzyme: Identification of kinetically favoured apical-basal [Fe-2(CO)(4)(mu-H){kappa(2)-Ph2PC(Me-2) PPh2}(mu-pdt)](+) as a proton-reduction catalyst. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 812, 247-258. doi:10.1016/j.jorganchem.2015.09.036 Hollingsworth, N., Taylor, S. F. R., Galante, M. T., Jacquemin, J., Longo, C., Holt, K. B., . . . Hardacre, C. (2015). CO2 capture and electrochemical conversion using superbasic [P-66614]-[124Triz]. FARADAY DISCUSSIONS, 183, 389-400. doi:10.1039/c5fd00091b Ghosh, S., Holt, K. B., Kabir, S. E., Richmond, M. G., & Hogarth, G. (2015). Electrocatalytic proton reduction catalysed by the low-valent tetrairon-oxo cluster [Fe-4(CO)(10)(kappa(2)-dppn)(mu(4)-O)](2-) [dppn=1,1 '- bis(diphenylphosphino)naphthalene]. DALTON TRANSACTIONS, 44 (11), 5160-5169. doi:10.1039/c4dt03323j Hollingsworth, N., Taylor, S. F. R., Galante, M. T., Jacquemin, J., Longo, C., Holt, K. B., . . . Hardacre, C. (2015). Reduction of Carbon Dioxide to Formate at Low Overpotential Using a Superbase Ionic Liquid. Angewandte Chemie - International Edition, 54 (47), 14164-14168. doi:10.1002/anie.201507629 Varley, T. S., Rosillo-Lopez, M., Sehmi, S., Hollingsworth, N., & Holt, K. B. (2015). Surface redox chemistry and mechanochemistry of insulating polystyrene nanospheres. Phys Chem Chem Phys, 17 (3), 1837-1846. doi:10.1039/c4cp03938f Lounasvuori, M. M., Rosillo-Lopez, M., Salzmann, C. G., Caruana, D. J., & Holt, K. B. (2015). The influence of acidic edge groups on the electrochemical performance of graphene nanoflakes. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 753, 28-34. doi:10.1016/j.jelechem.2015.05.010 Rahaman, A., Ghosh, S., Unwin, D. G., Basak-Modi, S., Holt, K. B., Kabir, S. E., . . . Hogarth, G. (2014). Bioinspired Hydrogenase Models: The Mixed-Valence Triiron Complex [Fe3(CO)7(μ-edt)2] and Phosphine Derivatives [Fe3(CO)7-x (PPh3) x (μ-edt)2] (x = 1, 2) and [Fe3(CO)5(κ(2)-diphosphine)(μ-edt)2] as Proton Reduction Catalysts. Organometallics, 33 (6), 1356-1366. doi:10.1021/om400691q Lounasvuori, M. M., Rosillo-Lopez, M., Salzmann, C. G., Caruana, D. J., & Holt, K. B. (2014). Electrochemical characterisation of graphene nanoflakes with functionalised edges. Faraday Discuss, 172, 293-310. doi:10.1039/c4fd00034j Ghosh, S., Hogarth, G., Hollingsworth, N., Holt, K. B., Kabir, S. E., & Sanchez, B. E. (2014). Hydrogenase biomimetics: Fe2(CO)4(μ-dppf)(μ-pdt) (dppf = 1,1'-bis(diphenylphosphino)ferrocene) both a proton-reduction and hydrogen oxidation catalyst. Chem Commun (Camb), 50 (8), 945-947. doi:10.1039/c3cc46456c Varley, T. S., Hirani, M., Harrison, G., & Holt, K. B. (2014). Nanodiamond surface redox chemistry: influence of physicochemical properties on catalytic processes. Faraday Discuss, 172, 349-364. doi:10.1039/c4fd00041b Holt, K. B. (2013). Electrochemistry of Nanodiamond Particles. Nanodiamond. Royal Society of Chemistry. Ridley, F., Ghosh, S., Hogarth, G., Hollingsworth, N., Holt, K. B., & Unwin, D. G. (2013). Fluorinated models of the iron-only hydrogenase: An electrochemical study of the influence of an electron-withdrawing bridge on the proton reduction overpotential and catalyst stability. Journal of Electroanalytical Chemistry, 703, 14-22. doi:10.1016/j.jelechem.2013.05.018 Ghosh, S., Hogarth, G., Hollingsworth, N., Holt, K. B., Richards, I., Richmond, M. G., . . . Unwin, D. (2013). Models of the iron-only hydrogenase: a comparison of chelate and bridge isomers of Fe2(CO)4{Ph2PN(R)PPh2}(μ-pdt) as proton-reduction catalysts. Dalton Trans, 42 (19), 6775-6792. doi:10.1039/c3dt50147g Naeem, S., Ribes, A., White, A. J. P., Haque, M. N., Holt, K. B., & Wilton-Ely, J. D. E. T. (2013). Multimetallic Complexes and Functionalized Nanoparticles Based on Oxygen- and Nitrogen-Donor Combinations. INORGANIC CHEMISTRY, 52 (8), 4700-4713. doi:10.1021/ic400335y Ghosh, S., Hogarth, G., Holt, K. B., Kabir, S. E., Rahaman, A., & Unwin, D. G. (2011). Bio-inspired hydrogenase models: mixed-valence triion complexes as proton reduction catalysts. CHEMICAL COMMUNICATIONS, 47 (40), 11222-11224. doi:10.1039/c1cc13249k Holt, K. B. (2011). Diamond Ultramicroelectrodes and Nanostructured Electrodes. In E. Brillas, C. A. Martinez-Huitle (Eds.), Synthetic Diamond Films: Preparation, Electrochemistry, Characterization, and Applications (pp. 133-152). New Jersey, USA: John Wiley & Sons. Scholz, J., McQuillan, A. J., & Holt, K. B. (2011). Redox transformations at nanodiamond surfaces revealed by in situ infrared spectroscopy. CHEMICAL COMMUNICATIONS, 47 (44), 12140-12142. doi:10.1039/c1cc14961j Caruana, D. J., & Holt, K. B. (2010). Astroelectrochemistry: the role of redox reactions in cosmic dust chemistry. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 12 (13), 3072-3079. doi:10.1039/b917817a Khengar, R. H., Brown, M. B., Turner, R. B., Traynor, M. J., Holt, K. B., & Jones, S. A. (2010). Free radical facilitated damage of ungual keratin. FREE RADICAL BIOLOGY AND MEDICINE, 49 (5), 865-871. doi:10.1016/j.freeradbiomed.2010.06.013 Holt, K. B. (2010). Undoped diamond nanoparticles: origins of surface redox chemistry. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 12 (9), 2048-2058. doi:10.1039/b920075d Lin, Y. H., Leung, N. H., Holt, K. B., Thompson, A. L., & Wilton-Ely, J. D. E. T. (2009). Bimetallic complexes based on carboxylate and carbamate ligands: synthesis and electrochemical investigations. Dalton Transactions: an international journal of inorganic chemistry, 38, 6891-7901.