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BEGIN:VEVENT
SUMMARY:Catalysis for Energy Conversion
DTSTART:20150203T100000
DTEND:20150203T110000
DTSTAMP:20260501T100900Z
UID:10dce4d7e1c14d6b5f1c2fe1185ae8526a00b45f90bddf7b063a42f3
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Ib Chorkendorff\, CINF Physics DTU Physics\, Technical U
 niversity of Denmark\nBio : Professor Ib Chorkendorff earned his Ph.D. deg
 ree in Physics at the Physics Institute\, Odense University. In 1986-87 he
  was post-doc with professor John Yates Jr. at Pittsburg University\, USA.
  He then joined The Technical University of Denmark (DTU) as Associate Pro
 fessor in 1987. In 1999 he was appointed Professor in Heterogeneous Cataly
 sis at Department of Physics and Chemical Engineering at DTU. From 2005 he
  has been Director of  “Center for Individual Nanoparticle Functionalit
 y” CINF at Department of Physics\, DTU\, www.cinf.dtu.dk The main intere
 st of Professor Ib Chorkendorff is surface reactivity applied in the field
  of Heterogeneous catalysis\, Electrocatalysis and Photocatalysis for ener
 gy harvesting\, conversion\, and storage as well as environmental protecti
 on. Ib Chorkendorff has co-published more than 254 scientific publications
 \, one book\, and submitted 16 patents.\nAbstract : Recent progress of cat
 alysis for energy conversion will be discussed: With respect to heterogene
 ous catalysis it will be demonstrated how close interaction in between the
 ory and experiments can lead to entirely new catalysts for synthesis of fo
 r example methanol [1].  Also the aspects of the methanol synthesis on th
 e conventional CuZn catalysts [2]. On the electrochemical side we shall de
 monstrate progress in finding new Oxygen Reduction Reaction (ORR) catalyst
 s for the oxygen reduction reaction and show how the activity is closely r
 elated to the lattice parameter for the alloys consisting of Pt5X where X 
 is rare earth metals [3]. It will also be show that mass-selected nanopart
 icles made from a cluster source show very high activity and how their nat
 ure can be elucidate by combining activity and synchrotron measurements [4
 \, 5]. It will be demonstrated how we again through a close theory experim
 ent approach have been able to find an entirely new class of catalyst for 
 hydrogen peroxide production [6\, 7]. The approach of using Mass-selected 
 nanoparticles from as sputter magnetron will be demonstrated for establish
 ing state-of-the art of Ru catalysts for the Oxygen Evolution Reaction (OE
 R) [8]. In particular we shall here show the importance of using alternati
 ve methods like Electrochemical Quartz microbalance and ICP measurements t
 o supplement the typically\, but insufficient\, chronoamperometric or chro
 novoltaometric measurements [9].  Finally I will discuss various strategi
 es of protecting and coupling catalysts to semiconductors used in tandem d
 evices for water splitting [10-12].\n1) F. Studt\, F. Abild-Pedersen\, I. 
 Sharafutdinov\, C. F. Elkær\, …. I. Chorkendorff\,  and J. K. Nørskov
 \, “Discovery of a Ni-Ga catalyst for CO2 reduction to methanol” \, Na
 ture Chemistry 6 (2014) 320.\n2) S. Kuld\, C. Conradsen\, P.G. Moses\, I. 
 Chorkendorff and J. Sehested\, ” Direct Observation of a Zn Surface Allo
 y on Cu in an Industrial-type Methanol Synthesis Catalyst” Angew. Chem. 
 Int. Ed.  53 (2014) 5941-5945.\n3) M. Escudero-Escribano\, P. Malacrida\,
  U. Grønbjerg\, V. Tripkovic\, J. Rossmeisl\, I. E.L. Stephens\, I. Chork
 endorff\, “Understanding the trends in activity and stability of Pt-base
 d cathode electrocatalysts for low-temperature fuel cells”\, In preparat
 ion (2015).\n4) P. Hernandez-Fernandez\, F. Masini\, …..\, T. W. Hansen\
 , A. Nilsson\, I. E.L. Stephens\, I. Chorkendorff\,  ”High Activity of 
 Mass-selected  PtxY Nanoparticles for the Oxygen Reduction Reaction\,” 
 Nature chemistry  6   (2014)  732.\n5) A. Velázquez-Palenzuela\, F. M
 asini\, …\, A. Nilsson\, I. E.L. Stephensa\, I. Chorkendorff\, “The en
 hanced activity of mass-selected PtxGd nanoparticles for oxygen electrored
 uction”\, Accepted J. Catal. (2014).\n6) S. Siahrostami\, A. Verdaguer-C
 asadevall\, M. Karamad\, P. Malacrida\, B. Wickman\, M. Escudero-Escribano
 \, I. Chorkendorff\, I. Stephens\, J. Rossmeisl\,  ”Enabling sustainabl
 e O2 electroreduction to H2O2 by catalyst design”
 Nature Materials 12
  (2013) 1137–1143.\n7) A. Verdaguer-Casadevall\, D. Deiana\, M. Karamad\
 , S. Siahrostami\, P. Malacrida1\, T. W. Hansen\, J. Rossmeisl\, I. Chorke
 ndorff\, I. Stephens1\, “Trends in activity and selectivity for direct e
 lectrochemical synthesis of H2O2 “Nano Letters 14 (2014) 1603-1608.\n8) 
 E. A. Paoli\, F. Masini\, R. Frydendal\, D. Deiana\, C. Schlaup\, M. Maliz
 ia\, S. Horch\, I. E.L Stephens\, I. Chorkendorff\, “Oxygen Evolution Re
 action on Model Well-Characterized Mass-Selected Nanoparticles of RuOx” 
 Chem. Sci.\, 2015\, 6 (1)\, 190 – 196\n9) R. Frydendal\, E. A. Paoli\, B
 . P. Knudsen\, B. Wickman\, P. Malacrida\, I. E.L. Stephens\, I. Chorkendo
 rff\,  “Benchmarking stability of oxygen evolution reaction catalysts: 
 the importance of monitoring mass losses” Chem.Electro.Chem 1 (2014) 207
 5–2081\n10) B. Seger\, I. E. Castelli\, P. C.K. Vesborg\, K. W. Jacobsen
 \, O. Hansen\, and I. Chorkendorff\, “2-Photon Tandem Device for Water S
 plitting: Design Parameters and Potential Feasibility”\, Energy   &Env
 iron. Sci.\, 2014\, 7 (8)\, 2397.\n11) B. Mei\, B. Seger\, T. Pedersen\, O
 . Hansen\, I. Chorkendorff\, and P. C. K. Vesborg\, “Protection of p+-n 
 Si-Photoanodes by sputter-deposited Ir/IrOx thin films”\, J. Phys. Chem.
  Lett. 5 (2014) 1948.\n12) B. Mei\, A. A. Permyakova\, R. Frydendal\, D. B
 ae\, T. Pedersen\, P. Malacrida\, O. Hansen\, I. E. L. Stephens\, P.  C. 
 K. Vesborg\, B. Seger\, and I. Chorkendorff\, “Iron-treated NiO as a hig
 hly transparent p-type protection layer for efficient Si-based photoanode
 ” J. Phys. Chem. Lett. 5 (2014) 3456.
LOCATION:ME B3 31 http://plan.epfl.ch/?room=MEB331
STATUS:CONFIRMED
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