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Cheng Y, Li RZ, Xu XY, Lu L. Density functional theory study of the reaction between VO− and water. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Metal free activation of water and ammonia by neutral tricoordinate pyramidal boron: a computational study. Struct Chem 2022. [DOI: 10.1007/s11224-022-02060-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ghoshal S, Pramanik A, Sarkar P. Towards H 2O catalyzed N 2-fixation over TiO 2 doped Ru n clusters ( n = 5, 6): a mechanistic and kinetic approach. Phys Chem Chem Phys 2021; 23:1527-1538. [PMID: 33403379 DOI: 10.1039/d0cp03507f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
H2O driven N2 fixation is known as the best alternative pathway to synthesise NH3 under ambient conditions. The thermodynamic non-spontaneous reaction can be accomplished by a photocatalytic water splitting reaction over a TiO2 supported surface with oxygen vacancies. Previous experiments have also shown N2 activation over a neutral Ru cluster whose catalytic activity was remarkably enhanced by TiO2 doping. In this article, we have investigated the detailed mechanism and kinetics of the H2O catalyzed nitrogen reduction reaction (NRR) over bare and TiO2 doped Ru5 clusters in conjunction with DFT and TST calculations. The lack of photochemical activity of the small model cluster provoked us to explore an alternative route of NH3 formation via H2O catalysis. For this, we have considered H2 as co-reactant. The partial reduction of N2 into NH3 or N2H4 could be achieved by a H2O oxidation reaction, however, catalytic regeneration requires additional H2 which effectively makes the overall reaction catalyzed by H2O. Above all, the present investigation suggests that NH3 is most favorably produced through the distal mechanism. Analysis of the rate constants demonstrates that the doping with TiO2 accelerates the kinetics of NRR by a few orders of magnitude. Furthermore, an increase of the size of the metal cluster would not significantly enhance the overall performance of NRR.
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Affiliation(s)
- Sourav Ghoshal
- Department of Chemistry, Visva-Bharati University, Santiniketan - 731235, India.
| | - Anup Pramanik
- Department of Chemistry, Visva-Bharati University, Santiniketan - 731235, India. and Department of Chemistry, Sidho-Kanho-Birsha University, Purulia - 723104, India
| | - Pranab Sarkar
- Department of Chemistry, Visva-Bharati University, Santiniketan - 731235, India.
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Liu G, Miliordos E, Ciborowski SM, Tschurl M, Boesl U, Heiz U, Zhang X, Xantheas SS, Bowen K. Communication: Water activation and splitting by single metal-atom anions. J Chem Phys 2018; 149:221101. [DOI: 10.1063/1.5050913] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Evangelos Miliordos
- Advanced Computing, Mathematics and Data Division, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - Sandra M. Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Martin Tschurl
- Institute for Physical Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Ulrich Boesl
- Institute for Physical Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Ulrich Heiz
- Institute for Physical Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 30071, China
| | - Sotiris S. Xantheas
- Advanced Computing, Mathematics and Data Division, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Kit Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
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5
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Dillinger S, Klein MP, Steiner A, McDonald DC, Duncan MA, Kappes MM, Niedner-Schatteburg G. Cryo IR Spectroscopy of N 2 and H 2 on Ru 8+: The Effect of N 2 on the H-Migration. J Phys Chem Lett 2018; 9:914-918. [PMID: 29406747 DOI: 10.1021/acs.jpclett.8b00093] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present the cryo IR-PD spectra of the coadsorbed [Ru8(H2)1(N2)4]+ and [Ru8(N2)4(H2)1]+ species differing in the adsorption sequence of H2 and N2, which we record via application of tandem cryo ion trapping. We observe strong evidence for dissociative H2 adsorption, and the spectra reveal differences in the Ru-H stretching region, which we assign to distal and proximal hydrogen atom locations on the Ru8+ cluster, their migration likely hindered by preloaded nitrogen molecules and unaffected by subsequent N2 adsorption.
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Affiliation(s)
- Sebastian Dillinger
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Matthias P Klein
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Annika Steiner
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - David C McDonald
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Michael A Duncan
- Department of Chemistry, University of Georgia , Athens, Georgia 30602, United States
| | - Manfred M Kappes
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT) , Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Gereon Niedner-Schatteburg
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
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Lang SM, Bernhardt TM, Kiawi DM, Bakker JM, Barnett RN, Landman U. The Interaction of Water with Free Mn
4
O
4
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Clusters: Deprotonation and Adsorption‐Induced Structural Transformations. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506294] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sandra M. Lang
- Institute of Surface Chemistry and Catalysis, University of Ulm, Albert‐Einstein‐Allee 47, 89069 Ulm (Germany)
| | - Thorsten M. Bernhardt
- Institute of Surface Chemistry and Catalysis, University of Ulm, Albert‐Einstein‐Allee 47, 89069 Ulm (Germany)
| | - Denis M. Kiawi
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen (The Netherlands)
- Anton Pannekoek Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam (The Netherlands)
| | - Joost M. Bakker
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen (The Netherlands)
| | - Robert N. Barnett
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332‐0430 (United States)
| | - Uzi Landman
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332‐0430 (United States)
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Lang SM, Bernhardt TM, Kiawi DM, Bakker JM, Barnett RN, Landman U. The Interaction of Water with Free Mn4O4+Clusters: Deprotonation and Adsorption-Induced Structural Transformations. Angew Chem Int Ed Engl 2015; 54:15113-7. [DOI: 10.1002/anie.201506294] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/24/2015] [Indexed: 11/11/2022]
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