个人简介

Bio Professor Gellman received his BS in Chemistry from the California Institute of Technology in 1981 and his PhD from the University of California, Berkeley, in 1985. Thereafter, he was an ICI postdoctoral fellow at Cambridge University in Physical Chemistry. He became a faculty member of the chemistry department at the University of Illinois before joining Carnegie Mellon in 1992 where he was appointed the Lord Professor of Chemical Engineering in 1999. Prof. Gellman also holds courtesy appointments in Materials Science and Engineering and in Chemistry. From Jan. 2003 – Nov. 2013 Prof. Gellman served as Department Head of Chemical Engineering. He promulgated a $28 million renovation of Doherty Hall between 2004 -2008. Prof. Gellman organized a consortium involving Carnegie Mellon, University of Pittsburgh, and West Virginia University and in 2007 became the founding Director of the Institute for Advanced Energy Solutions, an outgrowth of the Department of Energy - National Energy Technology Laboratory. In 2012 he was appointed co-Director of Carnegie Mellon’s W.E. Scott Institute for Energy Innovation. Education Cambridge University(postdoc) 1985-1987 Ph.D. University of California, Berkeley, 1985 B.S. Chemistry, California Institute of Technology, 1981

研究领域

Catalysis

Professor Gellman's group uses experimental methods to study processes occurring on surfaces such as the bonding of molecules to metal surfaces, surface structure, reaction kinetics, catalysis, friction, and lubrication. The use of surface science methods to create and study well-defined surfaces allows Professor Gellman's group to investigate surface chemistry relevant to these processes at the most fundamental level. Professor Gellman’s group has pioneered the study of enantioselective surface chemistry on naturally chiral metal surfaces. These surfaces are high Miller index planes that lack mirror symmetry and therefore exist as two enantiomorphs. Recent work using D- and L-tartaric acid adsorbed on several Cu(hkl)R&S surfaces has demonstrated that one can achieve enormously high enantiospecific reaction rates via autocatalytic surface explosion mechanisms (10.1021/ja408659v). Other work has used 13C isotopically labelled L-aspartic acid to monitor directly the enantioselective separation of DL-aspartic acid on Cu(3,1,17)R&S surfaces (10.1002/anie.201209025). This work generates insight into some of the fundamental phenomena that lead to enantioselective adsorption and catalysis on chiral surfaces. Recent work in Professor Gellman’s laboratory has focussed effort on the development of instrumentation and methods for high throughput study of surface phenomena. Study of the surface science of multicomponent materials such as alloys is complicated by the fact that one needs to prepare, characterize and study many samples of varying composition. Gellman’s group has worked to overcome this bottleneck by developing tools for the preparation of Composition Spread Alloy Films. These are alloy films that have composition gradients parallel to their surfaces such that a 1x1 cm2 sample contains all possible compositions of a ternary alloy, AxByC1-x-y with x = 0 -> 1, y = 0 -> 1-x. Spatially resolved materials and surface characterization methods (SEM, EDX, EBSD, XPS, UPS, LEIS, etc.) can then be used to map and study composition dependent phenomena such as surface segregation, catalysis, dewetting, and oxidation across the entire alloy composition space (10.1116/1.4766194). Another body of recent work exploits the use of spherically curved single crystal surfaces to conduct high throughput studies of structure sensitive surface chemistry that span surface orientations continuously. This circumvents the need for study of many single crystals exposing surfaces of a single crystallographic orientation. Surface Structure Spread Single Crystals expose a distribution of different surface orientations (10.1016/j.susc.2012.09.015) spanning a continuous region of the stereographic projection of all possible surface orientations. Spatially resolved surface analysis methods such as STM, XPS and UPS can be used to study problems in surface structure, surface physics and structure sensitive surface chemistry.

近期论文

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P. Kamakoti, J. Horvath, A.J. Gellman, D.S. Sholl, "Titration of Chiral Kink Sites on Cu(643) Using Iodine Adsorption" Surf. Sci.; 2004, 563, 206-216. D. Rampulla, A.J. Gellman, "Enantioselectivity on Surfaces with Nanoscale Chiral Structures" in Dekker Encyclopedia of Nanoscience and Nanotechnology; eds. J.A. Schwarz, Cristian I. Contescu, Karol Putyera; Marcel Dekker Inc.: 2004, 1113-1123. X. Zhao, S.S. Perry, J.D. Horvath, A.J. Gellman, "Adsorbate Induced Kink Formation in Straight Step Edges on Cu(533) and Cu(221)" Surf. Sci.; 2004, 563, 217-224. C.M. Mancinelli, A.J. Gellman, "Friction Anisotropy at Pd(100)/Pd(100) Interfaces" Langmuir; 2004, 20, 1680-1687. B. Immaraporn, P. Ye, A.J. Gellman, "The Transition State for Carboxylic Acid Deprotonation on Cu(100)" J. Phys. Chem. B.; 2004, 108, 3504-3511. B. Immaraporn, P. Ye, A.J. Gellman, "Chlorofluorocarbon Dechlorination on Pd(111): Effect of Chlorine Stoichiometry" J. Catal.; 2004, 223, 98-105. R.Z. Lei, A.J. Gellman, B.E. Koel, "Desorption Energies of Linear and Cyclic Alkanes on Surfaces: Anomalous Scaling with Length" Surf. Sci.; 2004, 554(2-3), 125-140. D. Sung, A.J. Gellman, "Ethyl Iodide Decomposition on Cu (111) and Cu(221)" Surf. Sci.; 2004, 551, 59-68. J.D. Horvath, A.J. Gellman, "Naturally Chiral Surfaces" Topics in Catalysis; 2003, 25(1-4), 9-15. C. Mancinelli, C.J. Jenks, P.A. Thiel, A.J. Gellman, "Tribological Properties of a B2-type AlPdMn Quasicrystal Approximant" J. Mater. Res.; 2003, 18(6), 1447-1456. N. Shukla, E. Svedberg, R. Veerdonk, X. Ma, J. Gui, A.J. Gellman,"Water Adsorption on Lubricated a-CHx in Humid Environments" Tribology Letters; 2003, 15(1), 9-14. A.J. Gellman, K.R. Paserba, "Kinetics and Mechanism of Oligomer Desorption from Surfaces: n-Alkanes on Graphite" J. Phys. Chem. B; 2002, 106, 13231-13241. A.J. Gellman, N.D. Spencer, "Surface Chemistry in Tribology" Proc. Inst. Mech. Engrs. Part J: Engineering Tribology; 2002, 216, 443-461. K.R. Paserba, N. Vaidyanathan, A.J. Gellman, "Conformational Entropy Effects on the Desorption of Polyethers from Graphite" Langmuir; 2002, 18(25), 9799-9809. A.J. Gellman, "The Influence of Catalytic Surfaces on the Barriers to Elementary Surface Reaction Steps" J. Phys. Chem.; 2002, 106(41), 10509-10517. D. Sung, A.J. Gellman, "Thermal Decomposition of Tricresylphosphate Isomers on Fe" Tribology Letters; 2002, 13(1), 9-14. D. Sung, A.J. Gellman, "The Surface Chemistry of Alkyl and Arylphosphate Vapor Phase Lubricants on Fe Foil" Tribology International; 2002, 35, 579-590. A.J. Gellman, K.R. Paserba, N. Vaidyanathan, "Desorption Kinetics of Polyether Lubricants from Surfaces" Tribology Letters; 2002, 12(2), 111-115. J.D. Horvath, A.J. Gellman, D.S. Sholl, T.D. Power, "Enantiospecific Properties of Chiral Single-Crystal Surfaces" In Chirality: Physical Chemistry J. Hicks, ed.; Oxford University Press: Washington, DC, 2002; pp 269-282. J.D. Horvath, A.J. Gellman, "Enantiospecific Desorption of Chiral Compounds from Chiral Cu(643) and Achiral Cu(111) Surfaces" J. Am. Chem. Soc.; 2002, 124, 2384-2392.