个人简介

BS, 2003, University of Nebraska at Kearney Ph.D. 2008, Texas A&M University Postdoctoral Scientist, 2008-2010, Cornell University

研究领域

Inorganic Chemistry

My research program primarily focuses on inorganic materials chemistry. We are investigating materials for fuel cell applications with the goal of developing new materials that are not only cheaper and more robust than current catalysts, but also more active toward the fuel cell reactions. The most commonly used fuel cell catalyst material is platinum nanoparticles. In addition to being quite expensive, platinum has several problems when used in fuel cells including poisoning, particle agglomeration, and dissolution. In my group, we are investigating bimetallic carbides as alternative catalyst materials that will not only reduce the cost of the fuel cells by eliminating some or all of the precious metals, but also improve the efficiency and stability of the catalyst and improve its resistance to poisoning. Carbides are well known to be conducting and chemically stable in acidic environments that are present in fuel cells and have been reported to exhibit Pt like chemical reactivates and electronic properties making them ideal candidates for elctrocatalyst materials. We are synthesizing bimetallic carbides using a variety of techniques, and are interested in mechanistic studies of these reactions which will allow the development of a general synthesis scheme with precise composition and size control. This will give us access to hundreds of different multimetallic carbides nanoparticles which can be then tested as fuel cell catalysts.

近期论文

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Y. N. Regmi, B. M. Leonard, “General Synthesis Method for Bimetallic Carbides of Group VIIIA First Row Transition Metals with Molybdenum and Tungsten” Chem Mater. 2014, 26, 2609-2616. DOI: 10.1021/cm500076v Abstract G. Sargsyan, B. M. Leonard, J. Kubelka, M. Balaz “Supramolecular ssDNA templated porphyrin and metalloporphyrin nanoassemblies with tunable helicity” Chem. Eur. J., 2014, 20, DOI: 10.1002/chem.20130415 (selected as a Very Important Paper) Abstract U. Tohgha, K. Deol, A. Porter, S. Bartko, J.K. Choi, B. M. Leonard, K. Varga, J. Kubelka, G. Muller, M. Balaz, “Ligand induced circular dichroism and circularly polarized luminescence in CdSe quantum dots" ACS Nano, 2013, 7, 11094-11102. Abstract D. A. Ruddy, O.G. Reid, B. M. Leonard , S. Pylypenkoc, and N.R. Neale “Non-aqueous thermolytic route to oxynitride photomaterials using molecular precursors Ti(OtBu)4 and N Mo(OtBu)3” J. Mater. Chem. A, 2013, 1, 14066-14070. Abstract C.Wan, N. A. Knight and B. M. Leonard “Crystal Structure and Morphology Control of Molybdenum Carbide Nanomaterials Synthesized from an Amine-Metal Oxide Composite” Chem. Commun., 2013, 49 (88), 10409 – 10411. Abstract B. Dutcher, M. Fan, B.M. Leonard, M.D. Dyar, J. Tang, E.A. Speicher, P. Liu, Y. Zhang, 2011, “Use of Nanoporous FeOOH as a Catalytic Support for NaHCO3 Decomposition Aimed at Reduction of Energy Requirement of Na2CO3/NaHCO3 Based CO2 Separation Technology” J. Phys. Chem. C, 116, 15532-15544. B. Dutcher, M. Fan, B. Leonard, 2011, “Use of multifunctional nanoporous TiO(OH)2 for catalytic NaHCO3 decomposition-eventually for Na2CO3/NaHCO3 based CO2 separation technology” Seperation and Purification Technology, 80, 364-374. B.M. Leonard, Q. Zhou, D. Wu, F.J. DiSalvo, 2011, “Facile Synthesis of PtNi Intermetallic Nanoparticles: Influence of Reducing Agent and Precursors on Electrocatalytic Activity” Chem. Mater., 23 (5), pp 1136–1146. A. Miura, M. Lowe, B.M. Leonard, C.V. Subban, Y. Masubuchi, S. Kikkawa, R. Dronskowski, R. G. Hennig, H.D. Abruña, F.J. DiSalvo, 2011, ”Silver delafossite nitride, AgTaN2?” J. Solid State Chem., 184, 7-11. Full Text C.V. Subban, Q. Zhou, B.M. Leonard, C. Ranjan, H.M. Edvenson, F.J. DiSalvo, S. Munie, J. Hunting, 2010 “Catalyst supports for polymer electrolyte fuel cells” Philosophical Transaction of the Royal Society A –Mathematical Physical and Engineering Sciences, 368, 3243-3253. O. Reckeweg, A. Schulz, B.M. Leonard, F.J. DiSalvo, 2010, “Single-Crystal X-Ray Diffraction Study of Na[OCN] at 170 K and its Vibrational Spectra” Zeitschrift Fur Naturforschung Section B – A Journal of Chemical Sciences, 65, 528-532. T. Ghosh, B.M. Leonard, Q. Zhou, F.J. DiSalvo, 2010, “Pt Alloy and Intermetallic Phases With V, Cr, Mn, Ni and Cu: Synthesis as Nanomaterials and Application as Active Fuel Cell Catalysts” Chem. Mater., 22, 2190-2202. Full Text A. Miura, F. Matsumoto, B.M. Leonard, H.D. Abruna, F.J. DiSalvo, 2009, “Synthesis of Intermetallic PtZn Nanoparticles by Reaction of Pt Nanoparticles with Zn Vapor and Their Application as Fuel Cell Catalysts” Chem. Mater., 21, 2661-2667. Full Text C. Wan, Y. N. Regmi, B. M. Leonard, “Multiple Phases of Molybdenum Carbide as Electrocatalysts for the Hydrogen Evolution Reaction”