个人简介

B.Sc., Calgary (1989); Ph.D., Guelph (J. Lipkowski, 1996); Postdoctoral, Plymouth Marine Laboratories, Plymouth, UK (A. Nelson, 1996-7) and Fritz Haber Institute der MPG, Berlin, Germany (B. Pettinger, 1997-8).

研究领域

Analytical Chemistry; Interfacial and Surface Chemistry; Materials & Polymer Chemistry; Physical & Theoretical Chemistry

Electrochemical processes form the basis for many chemical phenomena; the purification of metals, the detection method used in some biosensors, the creation of electrical energy in a fuel cell. Study of the chemistry that occurs on an electrode surface requires the use of many electrochemical techniques as well as in-situ spectroscopic and microscopic tools. Our main research focus is the study of molecular films adsorbed onto electrode surfaces. We investigate how the electric potential changes the nature of the molecules on the electrode surface. We probe these changes using electrochemistry (voltammetry, impedance, chronocoulometry) and in-situ spectroscopies such as FTIR, reflectance, Raman, and fluorescence in addition to AFM. We have also used these techniques to probe the electrocatalytic properties of Pt and Pt - alloy catalysts that may find use in fuel cell applications Current projects include: In-situ Fluorescence Microscopy Characterization of Modified Electrode Surfaces We have developed a unique tool to study electrode surfaces modified by the adsorption of molecules like fatty alcohols, alkylthiols, thiolated DNA, etc. This method is able to 'see' heterogeneity or uneven coverage by these molecules. Using this method, we hope to provide insight into the nature of these regions and preparation methods that minimize these areas. The surfaces under study usually form the basis for a number of biosensors. We are currently collaborating with Prof. H. Yu (SFU chemistry) investigating the nature of the DNA self-assembled monolayers (SAMs); with Prof. C. Buess-Herman (ULB, Belgium) investigating the characteristics of aptamer and peptide SAMS; and with Prof. F. Maran (UPD, Italy) on the SAMs of his highly oriented peptide SAMs. Fuel Cell Catalysis A better catalyst for the reduction of oxygen, which occurs on the cathode side of the PEM fuel cell is required. Currently, dispersed Pt nanoparticles are used. We are working on a new alloy of Pt that shows an improvement over Pt and is stable in acidic environments. We are using our in-situ probes to study the reaction on this alloy in addition to using this catalyst in a real fuel cell environment. In addition, we collaborate with Prof. D. Wilkinson and Prof. E. Gynege (CHBE) on the creation of a Pt/Nafion composite material that may be benifical in fuel cells, decreasing the need for Pt and increasing its stability during fuel cell operation Electrodeposited Cu films The study of electrodeposited Cu films and the role played by organic surfactants in the plating bath are studied using electrochemical and Raman techniques as well as AFM for topological measurements

近期论文

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Yu, Z. Landis; Casanova-Moreno, J. ; Guryanov, I. ; Maran, F. ; Bizzotto, D. Influence Of Surface Structure On Single Or Mixed Component Sams Via In-Situ Spectroelectrochemical Fluorescence Imaging Of The Complete Stereographic Triangle On A Single Crystal Au Bead Electrode. J. Am. Chem. Soc 2014, 141212121326004.BibTex Casanova-Moreno, J. R. ; Bizzotto, D. Frequency Response Analysis Of Potential-Modulated Orientation Changes Of A Dna Self Assembled Layer Using Spatially Resolved Fluorescence Measurements. Electrochim. Acta 2014.BibTex Ingle, N. J. C. ; Sode, A. ; Martens, I. ; Gyenge, E. ; Wilkinson, D. P. ; Bizzotto, D. Synthesis And Characterization Of Diverse Pt Nanostructures In Nafion. Langmuir 2014, 30, 1871–1879.BibTex 2013 Musgrove, A. ; Bridges, C. R. ; Sammis, G. M. ; Bizzotto, D. Potential-Dependent Interaction Of Dopc Liposomes With An Octadecanol-Covered Au(111) Surface Investigated Using Electrochemical Methods Coupled With In Situ Fluorescence Microscopy. Langmuir 2013, 29, 3347–3360.BibTex Alshwawreh, N. ; Militzer, M. ; Bizzotto, D. ; Kuo, J. C. Accelerated Recrystallization In Electrodeposited Dual-Layer Copper Thin Films. Journal of the Electrochemical Society 2013, 160, D3154–D3157.BibTex Casanova-Moreno, J. R. ; Bizzotto, D. What Happens To The Thiolates Created By Reductively Desorbing Sams? An In Situ Study Using Fluorescence Microscopy And Electrochemistry. Langmuir 2013, 29, 2065–2074.BibTex 2012 Alshwawreh, N. ; Militzer, M. ; Bizzotto, D. ; Kuo, J. C. Resistivity-Microstructure Correlation Of Self-Annealed Electrodeposited Copper Thin Films. Microelectronic Engineering 2012, 95, 26–33.BibTex 2011 Sode, A. ; Ingle, N. J. C. ; McCormick, M. ; Bizzotto, D. ; Gyenge, E. ; Ye, S. ; Knights, S. ; Wilkinson, D. P. Controlling The Deposition Of Pt Nanoparticles Within The Surface Region Of Nafion. Journal of Membrane Science 2011, 376, 162 - 169.BibTex 2010 Sleightholme, A. E. S. ; Wilkinson, D. P. ; Bizzotto, D. ; Ye, S. ; Gyenge, E. \Hod L. Nafion Film-Templated Platinum Electrodes For Oxygen Reduction. Electrocatalysis 2010, 1, 22 - 27.BibTex Casanova-Moreno, J. R. ; Bizzotto, D. Electrochemistry And In Situ Fluorescence Microscopy Of Octadecanol Layers Doped With A Bodipy-Labeled Phospholipid: Investigating An Adsorbed Heterogeneous Layer. Journal of Electroanalytical Chemistry 2010, 649, 126 - 135.BibTex Sode, A. ; Musgrove, A. ; Bizzotto, D. Stability Of Ptzn Nanoparticles Supported On Carbon In Acidic Electrochemical Environments. Journal of Physical Chemistry C 2010, 114, 546 - 553.BibTex Alshwawreh, N. ; Militzer, M. ; Bizzotto, D. Recrystallization Of Electrodeposited Copper Thin Films During Annealing. Journal of Electronic Materials 2010, 39, 2476 - 2482.BibTex 2009 Murphy, J. N. ; Cheng, A. K. H. ; Yu, H. Z. ; Bizzotto, D. On The Nature Of Dna Self-Assembled Monolayers On Au: Measuring Surface Heterogeneity With Electrochemical In Situ Fluorescence Microscopy. Journal of the American Chemical Society 2009, 131, 4042-4050.BibTex Sode, A. ; Bizzotto, D. Adsorbate-Induced Surface Reorganization On Ptzn Electrode. Electrochimica Acta 2009, 54, 1095-1101.BibTex Bauer, A. ; Wilkinson, D. P. ; Gyenge, E. L. ; Bizzotto, D. ; Ye, S. Liquid Crystalline Phase Templated Platinum Catalyst For Oxygen Reduction. Journal of the Electrochemical Society 2009, 156, B1169-B1174.BibTex 2008 Musgrove, A. ; Kell, A. ; Bizzotto, D. Fluorescence Imaging Of The Oxidative Desorption Of A Bodipy-Alkyl-Thiol Monolayer Coated Au Bead. Langmuir 2008, 24, 7881-7888.BibTex Zhu, L. ; Susac, D. ; Teo, M. ; Wong, K. C. ; Wong, P. C. ; Parsons, R. R. ; Bizzotto, D. ; Mitchell, K. A. R. ; Campbell, S. A. Investigation Of Cos2-Based Thin Films As Model Catalysts For The Oxygen Reduction Reaction. Journal of Catalysis 2008, 258, 235-242.BibTex 2007 Susac, D. ; Zhu, L. ; Teo, M. ; Sode, A. ; Wong, K. C. ; Wong, P. C. ; Parsons, R. R. ; Bizzotto, D. ; Mitchell, K. A. R. ; Campbell, S. A. Characterization Of Fes2-Based Thin Films As Model Catalysts For The Oxygen Reduction Reaction. Journal of Physical Chemistry C 2007, 111, 18715-18723.BibTex Stoodley, R. ; Wasan, K. A. ; Bizzotto, D. Fluorescence Of Amphotericin B-Deoxycholate (Fungizone) Monomers And Aggregates And The Effect Of Heat-Treatment. Langmuir 2007, 23, 8718-8725.BibTex 2006 Zhu, L. ; Susac, D. ; Lam, A. ; Teo, M. ; Wong, P. C. ; Bizzotto, D. ; Campbell, S. A. ; Parsons, R. R. ; Mitchell, K. A. R. Structure Of Sputtered Co-Se Thin Films Prepared For An Application In Catalysis. Journal of Solid State Chemistry 2006, 179, 3942-3948.BibTex Teo, M. ; Wong, P. C. ; Zhu, L. ; Susac, D. ; Campbell, S. A. ; Mitchell, K. A. R. ; Parsons, R. R. ; Bizzotto, D. Characterization Of A Co-Se Thin Film By Scanning Auger Microscopy And Raman Spectroscopy. Applied Surface Science 2006, 253, 1130-1134.BibTex Shepherd, J. L. ; Bizzotto, D. Characterization Of Mixed Alcohol Monolayers Adsorbed Onto A Au(111) Electrode Using Electro-Fluorescence Microscopy. Langmuir 2006, 22, 4869-4876.BibTex Sode, A. ; Li, W. ; Yang, Y. G. ; Wong, P. C. ; Gyenge, E. ; Mitchell, K. A. R. ; Bizzotto, D. Electrochemical Formation Of A Pt/zn Alloy And Its Use As A Catalyst For Oxygen Reduction Reaction In Fuel Cells. Journal of Physical Chemistry B 2006, 110, 8715-8722.BibTex Susac, D. ; Sode, A. ; Zhu, L. ; Wong, P. C. ; Teo, M. ; Bizzotto, D. ; Mitchell, K. A. R. ; Parsons, R. R. ; Campbell, S. A. A Methodology For Investigating New Nonprecious Metal Catalysts For Pem Fuel Cells. Journal of Physical Chemistry B 2006, 110, 10762-10770.BibTex