Lipkowski, Jacek - University of Guelph

研究领域

Our efforts are directed towards understanding of phenomena which determine the structure and composition of the metal solution interface. We are studying processes, such as adsorption, electron and ion transfer, which are involved in electrolytic production of metals, corrosion and energy conversion in fuel cells or batteries. The metals are Pt, Au, Ag and Cu and their alloys. We are making efforts to understand how adsorption of organic molecules and ions depends on surface crystallography of the metal electrode. We are growing Pt, Au, Ag and Cu single crystal, later we are orienting and cutting them to expose crystallographic planes of required geometry. We use ultra high vacuum (UHV) based surface analysis techniques ( Auger Electron Spectroscopy and Low Energy Electron Diffraction ) to control surface purity and crystallography. We employ electroanalytical techniques to determine the amount of ions and molecules adsorbed at the metal solution interface and energetics of their interaction with the metal surface. In situ imaging by Scanning Tunneling Microscopy and Atomic Force Microscopy is used to determine the structure. of the thin films that are deposited at the metal electrode from an electrolyte solution. Molecular absorption and florescence spectroscopies and Fourier transform infra red spectroscopy are used to study the orientation of organic molecules adsorbed at electrode surfaces. In addition we travel to Cornell University to use Cornell High Energy Synchrotron Source in order to perform X-ray absorption experiments on monolayers deposited at metal electrodes. Extended X-ray fine structure EXAFS spectra provide information about geometries of adsorption sites and the bond length chemisorption bond length. In summary our research is a balance mixture of electrochemistry, surface analysis and surface spectroscopy and materials science. It is also a mixture of fundamental and applied science since we apply the knowledge gained from our fundamental studies to solve industrial problems related to protection against corrosion and electrolytic production of metals.

近期论文

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230. A. Morrison, G. Szymanski ,G.Moula, B.Barlow, I.J.Burgess, B.Shobeir, H. Huang, J. Lipkowski, “Electrochemical Dissolution Behaviour and Residue Formation of Laboratory Grown Carbonyl Nickel Simulating Industrial Carbonyl Nickel Pellet Growth”, Electrochim Acta, submitted, June 6, 2016. 229. Scott R. Smith, Chunqing Zhou, Janet Y. Baron, Yeonuk Choi, Jacek Lipkowski, “Elucidating the Interfacial Interactions of Copper and Ammonia with the Sulfur Passive Layer during Thiosulfate Mediated Gold Leaching”, Electrochim Acta, 2016,210,925-939 228. Piotr Pieta, Marta Majewska, Zhangfei Su, Michael Grossutti, Benedykt Wladyka, Marcin Piejko, Jacek Lipkowski, Jacek; Pawel Mak, “Physicochemical Studies on Orientation and Conformation of a New Bacteriocin BacSp222 in a Planar Phospholipid Bilayer”, Langmuir,2016,32,5653-5662. 227. Jeff Mirza, Isaac Martens, Martin Gruesser, Dan Bizzotto, Rolf Schuster, Jacek Lipkowski, “Gold Nanorod Arrays: Excitation of Transverse Plasmon Modes and Surface Enhanced Raman Applications” J.Phys.Chem.C, 2016 ,120,16246-16253 226. Francisco Prieto, Zhangfei Su, J. Jay Leitch, Manuela Rueda, Jacek Lipkowski, “Quantitative subtractively normalized interfacial Fourier transform infrared reflection spectroscopy study of the adsorption of adenine on Au(111) electrode.”, Langmuir, 2016, 37,3827-3835. 225. Ian Burgess, Burke Barlow, Grzegorz Szymanski, Jacek Lipkowski, Babak Shobeir, and Bruce Love, "Pulsed Potential Dissolution Reduces Anode Residue Formation During Nickel Electroplating", J.Electrochem.Soc., 2016,163,C164-170.. 224. Scott R. Smith, Janet Y. Baron, Yeonuk Choi, Jacek Lipkowski, “Shell-Isolated Nanoparticle-Enhanced Raman Spectroscopy Characterization of Oxide Ores during Thiosulfate Mediated Gold Leaching”, Journal of Raman Spectroscopy, accepted, July 20, 2016 223. Michael Grossutti, Ryan Seenath, John A. Noel and J.Lipkowski, „Infrared and Fluorescence Spectroscopic Studies of a Phospholipid Bilayer Supported by a Soft Cationic Hydrogel Scaffold”, Journal of Colloids and Interface Science, 2016, 473,162-171 222. Matyszewska, Dorota; Bilewicz, Renata; Su, ZhangFei; Leitch, J. Jay; Lipkowski, Jacek "PM-IRRAS studies of DMPC bilayers supported on Au(111) electrodes modified with hydrophilic monolayers of thioglucose." Langmuir , 2016,32,1791-1798. 221. Michael Grossutti, Ryan Seenath and Jacek Lipkowski “Infrared and Fluorescence Spectroscopic Investigations of the Acyl Surface Modification of Hydrogel Beads for the Deposition of a Phospholipid Coating”, Langmuir, 2015,31,11598-11604. 220. Scott R. Smith, Ryan Seenath, Monika R. Kulak, Jacek Lipkowski “Characterization of a Self-Assembled Monolayer of 1-Thio-β-D-Glucose with Electrochemical Surface Enhanced Raman Spectroscopy using a Nanoparticle Modified Gold Electrode” Langmuir, 2015,31,10076-10086 219. M.G. Moula, G.Szymanski, B.Shobeir, H. Huang, I.J.Burgess, A. Chen and J. Lipkowski, “Electrochemical Dissolution Behavior and the Residue Formation Mechanism of Laboratory Made Carbonyl Nickel”, Electrochim.Acta., 2015,162,108-118. 218. Michael Grossutti, J. Jay Leitch, Ryan Seenath, M. Karaskiewicz and Jacek Lipkowski, “SEIRAS Studies of Water Structure in a Sodium Dodecyl Sulfate film adsorbed at a Gold Electrode Surface”,Langmuir, 2015,31,4411-4418. 217. Scott. R. Smith, J. Jay Leitch, Chunqing Zhou, Jeff Mirza, Song-Bo Li, Xiang-Dong Tian, Yi-Fan Huang, Zhong-Qun Tian, Janet Y. Baron, Yeonuk Choi and Jacek Lipkowski, “Quantitative SHINERS analysis of temporal changes in the passive layer at a gold electrode surface in a thiosulfate solution”, Anal.Chem., 2015,87,3791-3799.