Catalysis for Energy Conversion
Event details
| Date | 03.02.2015 |
| Hour | 10:00 › 11:00 |
| Speaker |
Prof. Ib Chorkendorff, CINF Physics DTU Physics, Technical University of Denmark Bio : Professor Ib Chorkendorff earned his Ph.D. degree 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 Professor in 1987. In 1999 he was appointed Professor in Heterogeneous Catalysis at Department of Physics and Chemical Engineering at DTU. From 2005 he has been Director of “Center for Individual Nanoparticle Functionality” CINF at Department of Physics, DTU, www.cinf.dtu.dk The main interest of Professor Ib Chorkendorff is surface reactivity applied in the field of Heterogeneous catalysis, Electrocatalysis and Photocatalysis for energy harvesting, conversion, and storage as well as environmental protection. Ib Chorkendorff has co-published more than 254 scientific publications, one book, and submitted 16 patents. |
| Location | |
| Category | Conferences - Seminars |
Abstract : Recent progress of catalysis for energy conversion will be discussed: With respect to heterogeneous catalysis it will be demonstrated how close interaction in between theory and experiments can lead to entirely new catalysts for synthesis of for example methanol [1]. Also the aspects of the methanol synthesis on the conventional CuZn catalysts [2]. On the electrochemical side we shall demonstrate progress in finding new Oxygen Reduction Reaction (ORR) catalysts for the oxygen reduction reaction and show how the activity is closely related 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 nanoparticles made from a cluster source show very high activity and how their nature can be elucidate by combining activity and synchrotron measurements [4, 5]. It will be demonstrated how we again through a close theory experiment 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 establishing state-of-the art of Ru catalysts for the Oxygen Evolution Reaction (OER) [8]. In particular we shall here show the importance of using alternative methods like Electrochemical Quartz microbalance and ICP measurements to supplement the typically, but insufficient, chronoamperometric or chronovoltaometric measurements [9]. Finally I will discuss various strategies of protecting and coupling catalysts to semiconductors used in tandem devices for water splitting [10-12].
1) 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” , Nature Chemistry 6 (2014) 320.
2) S. Kuld, C. Conradsen, P.G. Moses, I. Chorkendorff and J. Sehested, ” Direct Observation of a Zn Surface Alloy on Cu in an Industrial-type Methanol Synthesis Catalyst” Angew. Chem. Int. Ed. 53 (2014) 5941-5945.
3) M. Escudero-Escribano, P. Malacrida, U. Grønbjerg, V. Tripkovic, J. Rossmeisl, I. E.L. Stephens, I. Chorkendorff, “Understanding the trends in activity and stability of Pt-based cathode electrocatalysts for low-temperature fuel cells”, In preparation (2015).
4) 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.
5) A. Velázquez-Palenzuela, F. Masini, …, A. Nilsson, I. E.L. Stephensa, I. Chorkendorff, “The enhanced activity of mass-selected PtxGd nanoparticles for oxygen electroreduction”, Accepted J. Catal. (2014).
6) S. Siahrostami, A. Verdaguer-Casadevall, M. Karamad, P. Malacrida, B. Wickman, M. Escudero-Escribano, I. Chorkendorff, I. Stephens, J. Rossmeisl, ”Enabling sustainable O2 electroreduction to H2O2 by catalyst design” Nature Materials 12 (2013) 1137–1143.
7) A. Verdaguer-Casadevall, D. Deiana, M. Karamad, S. Siahrostami, P. Malacrida1, T. W. Hansen, J. Rossmeisl, I. Chorkendorff, I. Stephens1, “Trends in activity and selectivity for direct electrochemical synthesis of H2O2 “Nano Letters 14 (2014) 1603-1608.
8) E. A. Paoli, F. Masini, R. Frydendal, D. Deiana, C. Schlaup, M. Malizia, S. Horch, I. E.L Stephens, I. Chorkendorff, “Oxygen Evolution Reaction on Model Well-Characterized Mass-Selected Nanoparticles of RuOx” Chem. Sci., 2015, 6 (1), 190 – 196
9) R. Frydendal, E. A. Paoli, B. P. Knudsen, B. Wickman, P. Malacrida, I. E.L. Stephens, I. Chorkendorff, “Benchmarking stability of oxygen evolution reaction catalysts: the importance of monitoring mass losses” Chem.Electro.Chem 1 (2014) 2075–2081
10) B. Seger, I. E. Castelli, P. C.K. Vesborg, K. W. Jacobsen, O. Hansen, and I. Chorkendorff, “2-Photon Tandem Device for Water Splitting: Design Parameters and Potential Feasibility”, Energy &Environ. Sci., 2014, 7 (8), 2397.
11) 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.
12) B. Mei, A. A. Permyakova, R. Frydendal, D. Bae, T. Pedersen, P. Malacrida, O. Hansen, I. E. L. Stephens, P. C. K. Vesborg, B. Seger, and I. Chorkendorff, “Iron-treated NiO as a highly transparent p-type protection layer for efficient Si-based photoanode” J. Phys. Chem. Lett. 5 (2014) 3456.
1) 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” , Nature Chemistry 6 (2014) 320.
2) S. Kuld, C. Conradsen, P.G. Moses, I. Chorkendorff and J. Sehested, ” Direct Observation of a Zn Surface Alloy on Cu in an Industrial-type Methanol Synthesis Catalyst” Angew. Chem. Int. Ed. 53 (2014) 5941-5945.
3) M. Escudero-Escribano, P. Malacrida, U. Grønbjerg, V. Tripkovic, J. Rossmeisl, I. E.L. Stephens, I. Chorkendorff, “Understanding the trends in activity and stability of Pt-based cathode electrocatalysts for low-temperature fuel cells”, In preparation (2015).
4) 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.
5) A. Velázquez-Palenzuela, F. Masini, …, A. Nilsson, I. E.L. Stephensa, I. Chorkendorff, “The enhanced activity of mass-selected PtxGd nanoparticles for oxygen electroreduction”, Accepted J. Catal. (2014).
6) S. Siahrostami, A. Verdaguer-Casadevall, M. Karamad, P. Malacrida, B. Wickman, M. Escudero-Escribano, I. Chorkendorff, I. Stephens, J. Rossmeisl, ”Enabling sustainable O2 electroreduction to H2O2 by catalyst design” Nature Materials 12 (2013) 1137–1143.
7) A. Verdaguer-Casadevall, D. Deiana, M. Karamad, S. Siahrostami, P. Malacrida1, T. W. Hansen, J. Rossmeisl, I. Chorkendorff, I. Stephens1, “Trends in activity and selectivity for direct electrochemical synthesis of H2O2 “Nano Letters 14 (2014) 1603-1608.
8) E. A. Paoli, F. Masini, R. Frydendal, D. Deiana, C. Schlaup, M. Malizia, S. Horch, I. E.L Stephens, I. Chorkendorff, “Oxygen Evolution Reaction on Model Well-Characterized Mass-Selected Nanoparticles of RuOx” Chem. Sci., 2015, 6 (1), 190 – 196
9) R. Frydendal, E. A. Paoli, B. P. Knudsen, B. Wickman, P. Malacrida, I. E.L. Stephens, I. Chorkendorff, “Benchmarking stability of oxygen evolution reaction catalysts: the importance of monitoring mass losses” Chem.Electro.Chem 1 (2014) 2075–2081
10) B. Seger, I. E. Castelli, P. C.K. Vesborg, K. W. Jacobsen, O. Hansen, and I. Chorkendorff, “2-Photon Tandem Device for Water Splitting: Design Parameters and Potential Feasibility”, Energy &Environ. Sci., 2014, 7 (8), 2397.
11) 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.
12) B. Mei, A. A. Permyakova, R. Frydendal, D. Bae, T. Pedersen, P. Malacrida, O. Hansen, I. E. L. Stephens, P. C. K. Vesborg, B. Seger, and I. Chorkendorff, “Iron-treated NiO as a highly transparent p-type protection layer for efficient Si-based photoanode” J. Phys. Chem. Lett. 5 (2014) 3456.
Practical information
- Informed public
- Free
Organizer
- IGM-GE
Contact
- Géraldine Palaj