1
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Zhang Y, Kudoh S, Yamaguchi M, Mafuné F. Screening of Subnanoscale Metal Hydride Formation for Late Transition Metals Using Dimer Cations─Group IX Element. J Phys Chem A 2024; 128:8635-8644. [PMID: 39325568 DOI: 10.1021/acs.jpca.4c03976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
The energetically stable structures of M2Hm+ (M = Co, Rh, Ir; m = 2, 4, 6, ...) were investigated using density functional theory calculations, and possible reaction pathways for the sequential adsorption of H2 molecules on M2+ were proposed. Based on the most stable structures, adsorption energies of H2 were calculated for each adsorption step, and the maximum numbers of adsorbed H atoms on Co2+, Rh2+, and Ir2+ were estimated to be 14, 16, and 16, respectively. Compared to group XI elements (M = Cu, Ag, and Au), which are conceivably inert to H2, more H atoms were bound to Co2+, Rh2+, and Ir2+. The adsorption of H2 on M2+ (M = Co, Rh, Ir, or Cu) in the gas phase was investigated experimentally at 300 K using mass spectrometry. Although Rh2+ and Ir2+ stored numerous H2 molecules as predicted by calculations, Co2+ was found to adsorb no H atoms. It was probably due to the insufficient adsorption energy of Co2+ and the kinetic effect in the H2 adsorption process. Thus, computational calculations can overestimate the number of adsorbed H atoms.
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Affiliation(s)
- Yufei Zhang
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
| | - Satoshi Kudoh
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
| | - Masato Yamaguchi
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
| | - Fumitaka Mafuné
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902, Japan
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2
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Muman V, Tennyson-Davies A, Allegret O, Addicoat MA. Reactions of N 2O and CO on neutral Rh 10O n clusters: a density functional study. Phys Chem Chem Phys 2024; 26:2218-2227. [PMID: 38165015 DOI: 10.1039/d3cp04929a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Density functional theory calculations were performed to identify product, reactant and intermediate dissociative/associative structures for the oxygen abstraction and addition reactions: Rh10On + CO → Rh10On-1 + CO2, n = 1-5 and Rh10On + N2O → Rh10On+1 + N2, n = 0-4 reactions. In the case of the oxygen abstraction reactions, the energetics of the reaction path were very similar in energy regardless of the number of oxygen atoms on the Rh10On cluster, whereas for the addition of oxygen to the Rh10On cluster, the reaction was found to become significantly less exothermic with each successive addition of oxygen.
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Affiliation(s)
- Vikram Muman
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
| | - Alex Tennyson-Davies
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
| | - Oihan Allegret
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
- Univ Limoges, IRCER, UMR CNRS 7315, F-87068 Limoges, France
| | - Matthew A Addicoat
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK.
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3
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Zhang Y, Mafuné F. Hydrogen Storage Capacity of Single-Nb-Atom-Doped Al Clusters in the Gas Phase Revealed by Thermal Desorption Spectrometry. J Phys Chem Lett 2023:5734-5739. [PMID: 37318448 DOI: 10.1021/acs.jpclett.3c01267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Hydrogen is a promising energy resource as a substitute for fossil fuels, and metal alloy hydrides are considered to be good candidates as hydrogen storage materials. In the hydrogen storage processes, hydrogen desorption is as important as hydrogen adsorption. In order to understand the hydrogen desorption features of those clusters, here, single-Nb-atom-doped Al clusters were prepared in the gas phase and their reaction with hydrogen was investigated using thermal desorption spectrometry (TDS). On average, six to eight H atoms were adsorbed in AlnNb+ (n = 4-18) clusters, and most H atoms were released upon heating of the clusters to 800 K. Two types of desorption features of AlnNb+ clusters were found, which related to the flexibility of the clusters. This study demonstrated the potential of Nb-doped Al alloy as an efficient hydrogen storage material with high storage capacity, thermal stability at room temperature, and hydrogen desorption ability upon moderate heating.
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Affiliation(s)
- Yufei Zhang
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Fumitaka Mafuné
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
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4
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Fielicke A. Probing the binding and activation of small molecules by gas-phase transition metal clusters via IR spectroscopy. Chem Soc Rev 2023. [PMID: 37162518 DOI: 10.1039/d2cs00104g] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Isolated transition metal clusters have been established as useful models for extended metal surfaces or deposited metal particles, to improve the understanding of their surface chemistry and of catalytic reactions. For this objective, an important milestone has been the development of experimental methods for the size-specific structural characterization of clusters and cluster complexes in the gas phase. This review focusses on the characterization of molecular ligands, their binding and activation by small transition metal clusters, using cluster-size specific infrared action spectroscopy. A comprehensive overview and a critical discussion of the experimental data available to date is provided, reaching from the initial results obtained using line-tuneable CO2 lasers to present-day studies applying infrared free electron lasers as well as other intense and broadly tuneable IR laser sources.
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Affiliation(s)
- André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany.
- Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany
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5
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Facio-Muñoz JG, Hernández-Velázquez DA, Guzmán-Ramírez G, Flores-Moreno R, Rodríguez-Zavala JG, Tenorio FJ. Electronic structure and reactivity indexes of cobalt clusters, both pure and mixed with NO and [Formula: see text] ([Formula: see text], [Formula: see text] and [Formula: see text]). J Mol Model 2022; 28:197. [PMID: 35729282 DOI: 10.1007/s00894-022-05165-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 05/19/2022] [Indexed: 11/26/2022]
Abstract
Among the most popular motivations for environmental scientists is improving materials that could be useful to fight or avoid pollution. This work shows a study of neutral and cationic cobalt clusters from 4 to 9 atoms ([Formula: see text], q = 0,1 and n = 4-9) to model their separate interaction with contaminant nitric and nitrous oxides. This study is within the framework of the density functional theory in the Kohn-Sham scheme by using BPW91 functional and 6-311G and 6-31G* basis sets to calculate global and local reactivity indexes. The effect of spin multiplicity is also determined. Results on the geometries of pure cobalt clusters agree with previously reported structures. Global minimum energy structures showed a marked preference towards the interaction of nitric and nitrous oxide molecules with cobalt clusters through chemisorptive dissociation, with the dissociation of the corresponding nitrogen oxide. Reactivity indexes reveal an even-odd alternate, which is related to electron counts. Moreover, the chemical potential is lowering after interaction with nitrogen oxides. The Fukui function illustrates the reactive zones with a high probability of chemisorption of more nitrogen oxide molecules.
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Affiliation(s)
- José Guadalupe Facio-Muñoz
- Departamento de Ciencias Exactas y Tecnología, Centro Universitario de los Lagos, Universidad de Guadalajara, Enrique Díaz de León 1144, Lagos de Moreno, 47460, Jalisco, México
| | - David Alejandro Hernández-Velázquez
- Departamento de Ciencias Exactas y Tecnología, Centro Universitario de los Lagos, Universidad de Guadalajara, Enrique Díaz de León 1144, Lagos de Moreno, 47460, Jalisco, México
| | - Gregorio Guzmán-Ramírez
- Departamento de Estudios del Agua y la Energía, Centro Universitario de Tonalá, Universidad de Guadalajara, Av. Nuevo Periférico 555, Ejido San José Tatepozco, Tonalá, 45825, Jalisco, México
| | - Roberto Flores-Moreno
- Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragan 1421, esq. Calzada Olímpica, Guadalajara, 44430, Jalisco, México
| | - J G Rodríguez-Zavala
- Departamento de Ciencias Exactas y Tecnología, Centro Universitario de los Lagos, Universidad de Guadalajara, Enrique Díaz de León 1144, Lagos de Moreno, 47460, Jalisco, México
| | - Francisco J Tenorio
- Departamento de Ciencias Exactas y Tecnología, Centro Universitario de los Lagos, Universidad de Guadalajara, Enrique Díaz de León 1144, Lagos de Moreno, 47460, Jalisco, México.
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6
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Ehrhard AA, Klein MP, Mohrbach J, Dillinger S, Niedner-Schatteburg G. Cryo kinetics of N2 adsorption onto bimetallic rhodium–iron clusters in isolation. J Chem Phys 2022; 156:054308. [DOI: 10.1063/5.0075286] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Amelie A. Ehrhard
- 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
| | - Jennifer Mohrbach
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
| | - Sebastian Dillinger
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
| | - Gereon Niedner-Schatteburg
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
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7
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Huang B, Yang M, Lei X, Gan W, Luo Z. A comparative study on the reactivity of cationic niobium clusters with nitrogen and oxygen. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Ehrhard AA, Klein MP, Mohrbach J, Dillinger S, Niedner-Schatteburg G. Cryokinetics and spin quenching in the N2 adsorption onto rhodium cluster cations. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1953172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Amelie A. Ehrhard
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Matthias P. Klein
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Jennifer Mohrbach
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Sebastian Dillinger
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Gereon Niedner-Schatteburg
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany
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9
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Salcedo A, Irigoyen B. DFT insights into structural effects of Ni-Cu/CeO 2 catalysts for CO selective reaction towards water-gas shift. Phys Chem Chem Phys 2021; 23:3826-3836. [PMID: 33533765 DOI: 10.1039/d0cp05613h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The water-gas shift (WGS) reaction is a key step in hydrogen production, particularly to meet the high-purity H2 requirement of PEM fuel cells. The catalysts currently employed in large-scale WGS plants require a two-step process to overcome thermodynamic and kinetic limitations. Ni-Cu/CeO2 solids are promising catalysts for the one-step process required for small-scale applications, as the addition of Cu hinders undesired methanation reactions occurring on Ni/CeO2. In this work, we performed calculations on Ni4-xCux/CeO2(111) systems to evaluate the influence of cluster conformation on the selectivity towards water-gas shift. The structure and miscibility of CeO2-supported Ni4-xCux clusters were investigated and compared with those of gas-phase clusters to understand the effect of metal-support interactions. The adsorption of CO onto apical Ni and Cu atoms of Ni4-xCux/CeO2(111) systems was studied, and changes in the C-O bond strength were confirmed at the electronic level by investigating shifts in the 3σ and 1π orbitals. The selectivity towards WGS was evaluated using Brønsted-Evans-Polanyi relations for the C-O activation energy. Overall, a strengthening of the C-O bond and an increase in CO dissociation energy were verified on Cu-containing clusters, explaining the improvement in selectivity of Ni4-xCux/CeO2(111) systems.
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Affiliation(s)
- Agustín Salcedo
- Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Ingeniería Química, Pabellón de Industrias, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina. and CONICET - Universidad de Buenos Aires, Instituto de Tecnologías del Hidrógeno y Energías Sostenibles (ITHES), Pabellón de Industrias, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina
| | - Beatriz Irigoyen
- Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Ingeniería Química, Pabellón de Industrias, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina. and CONICET - Universidad de Buenos Aires, Instituto de Tecnologías del Hidrógeno y Energías Sostenibles (ITHES), Pabellón de Industrias, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina
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10
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Vanbuel J, Ferrari P, Jia M, Fielicke A, Janssens E. Argon tagging of doubly transition metal doped aluminum clusters: The importance of electronic shielding. J Chem Phys 2021; 154:054312. [PMID: 33557561 DOI: 10.1063/5.0037568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The interaction of argon with doubly transition metal doped aluminum clusters, AlnTM2 + (n = 1-18, TM = V, Nb, Co, Rh), is studied experimentally in the gas phase via mass spectrometry. Density functional theory calculations on selected sizes are used to understand the argon affinity of the clusters, which differ depending on the transition metal dopant. The analysis is focused on two pairs of consecutive sizes: Al6,7V2 + and Al4,5Rh2 +, the largest of each pair showing a low affinity toward Ar. Another remarkable observation is a pronounced drop in reactivity at n = 14, independent of the dopant element. Analysis of the cluster orbitals shows that this feature is not a consequence of cage formation but is electronic in nature. The mass spectra demonstrate a high similarity between the size-dependent reactivity of the clusters with Ar and H2. Orbital interactions provide an intuitive link between the two and further establish the importance of precursor states in the reactions of the clusters with hydrogen.
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Affiliation(s)
- Jan Vanbuel
- Quantum Solid-State Physics, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - Piero Ferrari
- Quantum Solid-State Physics, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - Meiye Jia
- Quantum Solid-State Physics, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany and Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Ewald Janssens
- Quantum Solid-State Physics, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
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11
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Wang Y, Su YQ, Hensen EJM, Vlachos DG. Finite-Temperature Structures of Supported Subnanometer Catalysts Inferred via Statistical Learning and Genetic Algorithm-Based Optimization. ACS NANO 2020; 14:13995-14007. [PMID: 33054171 DOI: 10.1021/acsnano.0c06472] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Single-atom catalysts (SACs) minimize noble metal utilization and can alter the activity and selectivity of supported metal nanoparticles. However, the morphology of active centers, including single atoms and subnanometer clusters of a few atoms, remains elusive due to experimental challenges. The computational cost to describe numerous cluster shapes and sizes makes direct first-principles calculations impractical. We present a computational framework to enable structure determination for single-atom and subnanometer cluster catalysts. As a case study, we obtained the low-energy structures of Pdn (n = 1-21) clusters supported on CeO2(111), which are critical components of automobile three-way catalysts. Trained on density functional theory data, a three-dimensional cluster expansion is established using statistical learning to describe the Hamiltonian and predict energies of supported Pdn clusters of any structure. Low-energy stable and metastable structures are identified using a Metropolis Monte Carlo-based genetic algorithm in the canonical ensemble at 300 K. We observe that supported single atoms sinter to form bilayer clusters, and large cluster isomers share similarities in both shape and energy. The findings elucidate the significance of the support and microstructure on cluster stability. We discovered a simple surrogate structure-energy model, where the energy per atom scales with the square root of the average first coordination number, which can be used to estimate energies and compare the stability of clusters. Our framework, applicable to any metal/support system, fills an important methodological gap to predict the stability of supported metal catalysts in the subnanometer regime.
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Affiliation(s)
- Yifan Wang
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
- Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Ya-Qiong Su
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Emiel J M Hensen
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Dionisios G Vlachos
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
- Catalysis Center for Energy Innovation, RAPID Manufacturing Institute, and Delaware Energy Institute (DEI), University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
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12
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Ilgaz Aysan I, Gorkan T, Ozdemir I, Kadioglu Y, Gökoğlu G, Aktürk E. Electronic structure, cohesive and magnetic properties of iridium oxide clusters adsorbed on graphene. J Mol Graph Model 2020; 101:107726. [PMID: 32920238 DOI: 10.1016/j.jmgm.2020.107726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/30/2020] [Accepted: 08/24/2020] [Indexed: 10/23/2022]
Abstract
In this study, we investigated and revealed the electronic properties, geometric structures and binding behavior of small (IrO)n and [Formula: see text] (n = 1-5) clusters within first principles calculations based on the density functional theory. The electronic and magnetic properties of small nanoclusters displayed significant size dependency due to strong quantum confinement effect. Moreover we considered the binding and structural modification of the clusters on graphene surface as a substrate. The cohesive energy per atom of isolated clusters increased with size of the cluster n. This shows that the increase in coordination number results in a more stable nanocluster with increased number of saturated bonds. Pristine (IrO)n and [Formula: see text] clusters presented different structural motives at equilibrium. The ground states of (IrO)n and [Formula: see text] clusters considered in this study were all magnetic except for (IrO)4, [Formula: see text] , and [Formula: see text] . HOMO-LUMO gap EHLG values displayed large variations due to size of the cluster, hence bond saturation. The structural configurations of free standing nanoclusters are slightly modified, when adsorbed on graphene. The adsorption behavior of a cluster on graphene was improved by an applied electric field yielding larger binding energy and larger charger transfer. We observed that electronic and magnetic ground state of the clusters strongly depend on optimized structural configuration for both bare and adsorbed on graphene monolayer.
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Affiliation(s)
- Isil Ilgaz Aysan
- Department of Physics, Adnan Menderes University, 09100, Aydin, Turkey
| | - Taylan Gorkan
- Department of Physics, Adnan Menderes University, 09100, Aydin, Turkey
| | - Ilkay Ozdemir
- Department of Physics, Adnan Menderes University, 09100, Aydin, Turkey
| | - Yelda Kadioglu
- Department of Physics, Adnan Menderes University, 09100, Aydin, Turkey
| | - Gökhan Gökoğlu
- Department of Mechatronics Engineering, Faculty of Engineering, Karabuk University, 78050, Karabuk, Turkey
| | - Ethem Aktürk
- Department of Physics, Adnan Menderes University, 09100, Aydin, Turkey; Nanotechnology Application and Research Center, Adnan Menderes University, 09100, Aydin, Turkey.
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13
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Green AE, Schaller S, Meizyte G, Rhodes BJ, Kealy SP, Gentleman AS, Schöllkopf W, Fielicke A, Mackenzie SR. Infrared Study of OCS Binding and Size-Selective Reactivity with Gold Clusters, Aun+ (n = 1–10). J Phys Chem A 2020; 124:5389-5401. [DOI: 10.1021/acs.jpca.0c03813] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alice E. Green
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
| | - Sascha Schaller
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Gabriele Meizyte
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
| | - Benjamin J. Rhodes
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
| | - Sean P. Kealy
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
| | - Alexander S. Gentleman
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Stuart R. Mackenzie
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QZ Oxford, United Kingdom
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14
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Nhat PV, Nguyen PTN, Si NT. A computational study of thiol-containing cysteine amino acid binding to Au 6 and Au 8 gold clusters. J Mol Model 2020; 26:58. [PMID: 32055987 DOI: 10.1007/s00894-020-4312-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/27/2020] [Indexed: 12/23/2022]
Abstract
Density functional theory (DFT) calculations are employed to examine the adsorption behaviors of cysteine on the gold surface using Au6 and Au8 species as model reactants. Computed results show that cysteine molecules prefer to bind with gold clusters via the S-atom of the thiol group in vacuum and thiolate group in water. The gas-phase adsorption energies are around 20.2 kcal/mol for Au6 and 24.4 kcal/mol for Au8. In water environment, such values are slightly reduced for Au6 (19.6 kcal/mol), but increased a little more for Au8 (25.6 kcal/mol). As a result, if a visible light with a frequency of ν ≈ 6 × 1014 Hz (500 nm) is applied, the time for the recovery of Au6 and Au8 from the most stable complexes will be about 0.38 and 9.3 × 103 s, respectively, at 298 K in water. The Au6 is in addition found to benefit from a larger change of energy gap that could be converted to an electrical signal for detection of cysteine.
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Affiliation(s)
- Pham Vu Nhat
- Department of Chemistry, Can Tho University, Can Tho, Vietnam
| | - Pham Tran Nguyen Nguyen
- Institute for Computational Science and Technology, Ho Chi Minh City, Vietnam
- Computational Chemistry Lab, Faculty of Chemistry, VNUHCM-University of Sciences, Ho Chi Minh City, Vietnam
| | - Nguyen Thanh Si
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam.
- Computational Chemistry Research Group, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam.
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15
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Meizyte G, Green AE, Gentleman AS, Schaller S, Schöllkopf W, Fielicke A, Mackenzie SR. Free electron laser infrared action spectroscopy of nitrous oxide binding to platinum clusters, Ptn(N2O)+. Phys Chem Chem Phys 2020; 22:18606-18613. [DOI: 10.1039/d0cp02800b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infrared multiple-photon dissociation spectroscopy has been applied to study Ptn(N2O)+ (n = 1–8) clusters which represent entrance-channel complexes on the reactive potential energy surface for nitrous oxide decomposition on platinum.
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Affiliation(s)
- Gabriele Meizyte
- Department of Chemistry
- University of Oxford, Physical and Theoretical Chemistry Laboratory
- Oxford
- UK
| | - Alice E. Green
- Department of Chemistry
- University of Oxford, Physical and Theoretical Chemistry Laboratory
- Oxford
- UK
| | - Alexander S. Gentleman
- Department of Chemistry
- University of Oxford, Physical and Theoretical Chemistry Laboratory
- Oxford
- UK
| | - Sascha Schaller
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- 14195 Berlin
- Germany
| | | | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- 14195 Berlin
- Germany
- Institut für Optik und Atomare Physik
- Technische Universität Berlin
| | - Stuart R Mackenzie
- Department of Chemistry
- University of Oxford, Physical and Theoretical Chemistry Laboratory
- Oxford
- UK
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16
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Vanbuel J, Fernández EM, Jia MY, Ferrari P, Schöllkopf W, Balbás LC, Nguyen MT, Fielicke A, Janssens E. Hydrogen Chemisorption on Doubly Vanadium Doped Aluminum Clusters. Z PHYS CHEM 2019. [DOI: 10.1515/zpch-2019-1395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The interaction of hydrogen with doubly vanadium doped aluminum clusters, Al
n
V2
+ (n = 1–12), is studied experimentally by time-of-flight mass spectrometry and infrared multiple photon dissociation spectroscopy. The hydrogen binding geometry is inferred from comparison with infrared spectra predicted by density functional theory and shows that for the more reactive clusters the hydrogen adsorbs dissociatively. Three sizes, n = 4, 5 and 7, are remarkably unreactive compared to the other clusters. For larger sizes the reactivity decreases, a behavior that is similar to that of singly vanadium doped aluminum clusters, and that might be attributed to geometric and/or electronic shielding of the dopants. By examining the electronic structure of Al6V2
+ and Al7V2
+, interactions between the frontier orbitals of the clusters and those of H2 that explain the size-dependent reactivity are identified.
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Affiliation(s)
- Jan Vanbuel
- Laboratory of Solid-State Physics and Magnetism , KU Leuven , 3001 Leuven , Belgium
| | - Eva M Fernández
- Departamento de Física Fundamental , Universidad Nacional de Educación a Distancia , 28040 Madrid , Spain
| | - Mei-ye Jia
- Laboratory of Solid-State Physics and Magnetism , KU Leuven , 3001 Leuven , Belgium
| | - Piero Ferrari
- Laboratory of Solid-State Physics and Magnetism , KU Leuven , 3001 Leuven , Belgium
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , 14195 Berlin , Germany
| | - Luis C Balbás
- Departamento de Física Teórica , Universidad de Valladolid , 47011 Valladolid , Spain
| | | | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , 14195 Berlin , Germany
| | - Ewald Janssens
- Laboratory of Solid-State Physics and Magnetism , KU Leuven , 3001 Leuven , Belgium
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17
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Green AE, Justen J, Schöllkopf W, Gentleman AS, Fielicke A, Mackenzie SR. IR Signature of Size-Selective CO2
Activation on Small Platinum Cluster Anions, Pt
n
−
(n
=4-7). Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alice E. Green
- Department of Chemistry; University of Oxford; Physical and Theoretical Chemistry Laboratory; South Parks Road Oxford OX1 3QZ UK
| | - Jasmin Justen
- Institute for Optics and Atomic Physics; Technische Universität Berlin; Hardenbergstrasse 36 10623 Berlin Germany
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg, 4-6 14195 Berlin Germany
| | - Alexander S. Gentleman
- Department of Chemistry; University of Oxford; Physical and Theoretical Chemistry Laboratory; South Parks Road Oxford OX1 3QZ UK
| | - André Fielicke
- Institute for Optics and Atomic Physics; Technische Universität Berlin; Hardenbergstrasse 36 10623 Berlin Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg, 4-6 14195 Berlin Germany
| | - Stuart R. Mackenzie
- Department of Chemistry; University of Oxford; Physical and Theoretical Chemistry Laboratory; South Parks Road Oxford OX1 3QZ UK
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18
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Green AE, Justen J, Schöllkopf W, Gentleman AS, Fielicke A, Mackenzie SR. IR Signature of Size-Selective CO 2 Activation on Small Platinum Cluster Anions, Pt n - (n=4-7). Angew Chem Int Ed Engl 2018; 57:14822-14826. [PMID: 30207020 DOI: 10.1002/anie.201809099] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 11/09/2022]
Abstract
Infrared multiple photon dissociation spectroscopy (IR-MPD) has been employed to determine the nature of CO2 binding to size-selected platinum cluster anions, Ptn - (n=4-7). Interpreted in conjunction with density functional theory simulations, the results illustrate that the degree of CO2 activation can be controlled by the size of the metal cluster, with dissociative activation observed on all clusters n≥5. Of potential practical significance, in terms of the use of CO2 as a useful C1 feedstock, CO2 is observed molecularly-bound, but highly activated, on the Pt4 - cluster. It is trapped behind a barrier on the reactive potential energy surface which prevents dissociation.
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Affiliation(s)
- Alice E Green
- Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK
| | - Jasmin Justen
- Institute for Optics and Atomic Physics, Technische Universität Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg, 4-6, 14195, Berlin, Germany
| | - Alexander S Gentleman
- Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK
| | - André Fielicke
- Institute for Optics and Atomic Physics, Technische Universität Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany.,Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg, 4-6, 14195, Berlin, Germany
| | - Stuart R Mackenzie
- Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK
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19
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Pakiari AH, Salarhaji M. Introducing nano-particle-type properties of Ti (n=2–6) clusters. J Mol Graph Model 2018; 85:294-303. [DOI: 10.1016/j.jmgm.2018.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 10/28/2022]
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20
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Hoyt RA, Montemore MM, Kaxiras E. Nonadiabatic Hydrogen Dissociation on Copper Nanoclusters. J Phys Chem Lett 2018; 9:5339-5343. [PMID: 30145896 DOI: 10.1021/acs.jpclett.8b02133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Copper surfaces exhibit high catalytic selectivity but have poor hydrogen dissociation kinetics; therefore, we consider icosahedral Cu13 nanoclusters to understand how nanoscale structure might improve catalytic prospects. We find that the spin state is a surprisingly important design consideration. Cu13 clusters have large magnetic moments due to finite size and symmetry effects and exhibit magnetization-dependent catalytic behavior. The most favorable transition state for hydrogen dissociation has a lower activation energy than that on single-crystal copper surfaces but requires a magnetization switch from 5 to 3 μB. Without this switch, the activation energy is higher than that on single-crystal surfaces. Weak spin-orbit coupling hinders this switch, decreasing the kinetic rate of hydrogen dissociation by a factor of 16. We consider strategies to facilitate magnetization switches through optical excitations, substitution, charge states, and co-catalysts; these considerations demonstrate how control of magnetic properties could improve catalytic performance.
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Affiliation(s)
- Robert A Hoyt
- Department of Physics , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Matthew M Montemore
- John A. Paulson School of Engineering and Applied Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Efthimios Kaxiras
- Department of Physics , Harvard University , Cambridge , Massachusetts 02138 , United States
- John A. Paulson School of Engineering and Applied Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States
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21
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22
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Yeon J, Adams HL, Junkermeier CE, van Duin ACT, Tysoe WT, Martini A. Development of a ReaxFF Force Field for Cu/S/C/H and Reactive MD Simulations of Methyl Thiolate Decomposition on Cu (100). J Phys Chem B 2018; 122:888-896. [PMID: 28981284 DOI: 10.1021/acs.jpcb.7b06976] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It has been shown that the rate of decomposition of methyl thiolate species on copper is accelerated by sliding on a methyl thiolate covered surface in ultrahigh vacuum at room temperature. The reaction produces small gas-phase hydrocarbons and deposits sulfur on the surface. Here, a new ReaxFF potential was developed to enable investigation of the molecular processes that induce this mechanochemical reaction by using density functional theory calculations to tune force field parameters for the model system. Various processes, including volumetric expansion/compression of CuS, CuS2, and Cu2S unit cells; bond dissociation of Cu-S and valence angle bending of Cu-S-C; the binding energies of SCH3, CH3, and S atoms on a Cu surface; and energy for the decomposition of methyl thiolate molecular species on copper, were used to identify the new ReaxFF parameters. Molecular dynamics simulations of the reactions of adsorbed methyl thiolate species at various temperatures were performed to demonstrate the validity of the new potential and to study the thermal reaction pathways. It was found that reaction is initiated by C-S bond scission, consistent with experiments, and that the resulting methyl species diffuse on the surface and combine to desorb ethane, also as found experimentally.
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Affiliation(s)
- Jejoon Yeon
- Department of Mechanical Engineering, University of California , Merced, California 95343, United States
| | - Heather L Adams
- Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States
| | - Chad E Junkermeier
- Research Corporation of the University of Hawaii , Honolulu, Hawaii 96848, United States
| | - Adri C T van Duin
- Department of Mechanical and Nuclear Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Wilfred T Tysoe
- Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States
| | - Ashlie Martini
- Department of Mechanical Engineering, University of California , Merced, California 95343, United States
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23
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Vanbuel J, Jia MY, Ferrari P, Gewinner S, Schöllkopf W, Nguyen MT, Fielicke A, Janssens E. Competitive Molecular and Dissociative Hydrogen Chemisorption on Size Selected Doubly Rhodium Doped Aluminum Clusters. Top Catal 2017. [DOI: 10.1007/s11244-017-0878-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Munshi M, Craig SM, Berden G, Martens J, DeBlase AF, Foreman DJ, McLuckey SA, Oomens J, Johnson MA. Preparation of Labile Ni +(cyclam) Cations in the Gas Phase Using Electron-Transfer Reduction through Ion-Ion Recombination in an Ion Trap and Structural Characterization with Vibrational Spectroscopy. J Phys Chem Lett 2017; 8:5047-5052. [PMID: 28961009 PMCID: PMC5677246 DOI: 10.1021/acs.jpclett.7b02223] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 09/29/2017] [Indexed: 05/31/2023]
Abstract
Gas-phase ion chemistry methods that capture and characterize the degree of activation of small molecules in the active sites of homogeneous catalysts form a powerful new tool to unravel how ligand environments affect reactivity. A key roadblock in this development, however, is the ability to generate the fragile metal oxidation states that are essential for catalytic activity. Here we demonstrate the preparation of the key Ni(I) center in the widely used cyclam scaffold using ion-ion recombination as a gas-phase alternative to electrochemical reduction. The singly charged Ni+(cyclam) coordination complex is generated by electron transfer from fluoranthene and azobenzene anions to doubly charged Ni2+(cyclam), using the electron-transfer dissociation protocol in a commercial quadrupole ion trap instrument and in a custom-built octopole RF ion trap. The successful preparation of the Ni+(cyclam) cation is verified through analysis of its vibrational spectrum obtained using the infrared free electron laser FELIX.
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Affiliation(s)
- Musleh
U. Munshi
- Radboud
University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld
7c, 6525ED Nijmegen, The Netherlands
| | - Stephanie M. Craig
- Sterling
Chemistry Laboratory, Yale University, New Haven, Connecticut 06520, United States
| | - Giel Berden
- Radboud
University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld
7c, 6525ED Nijmegen, The Netherlands
| | - Jonathan Martens
- Radboud
University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld
7c, 6525ED Nijmegen, The Netherlands
| | - Andrew F. DeBlase
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Spectral
Energies,
LLC, Beavercreek, Ohio 45430, United States
| | - David J. Foreman
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Scott A. McLuckey
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jos Oomens
- Radboud
University, Institute for Molecules and
Materials, FELIX Laboratory, Toernooiveld
7c, 6525ED Nijmegen, The Netherlands
- van’t
Hoff Institute for Molecular Sciences, University
of Amsterdam, 1098XH Amsterdam, Science Park 908, The Netherlands
| | - Mark A. Johnson
- Sterling
Chemistry Laboratory, Yale University, New Haven, Connecticut 06520, United States
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25
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Vanbuel J, Fernández EM, Ferrari P, Gewinner S, Schöllkopf W, Balbás LC, Fielicke A, Janssens E. Hydrogen Chemisorption on Singly Vanadium-Doped Aluminum Clusters. Chemistry 2017; 23:15638-15643. [DOI: 10.1002/chem.201704361] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Jan Vanbuel
- Laboratory of Solid State Physics & Magnetism; KU Leuven; Celestijnenlaan 200D 3001 Leuven Belgium
| | - Eva M. Fernández
- Departamento de Física Fundamental; UNED; Paseo Senda del Rey 9 28040 Madrid Spain
| | - Piero Ferrari
- Laboratory of Solid State Physics & Magnetism; KU Leuven; Celestijnenlaan 200D 3001 Leuven Belgium
| | - Sandy Gewinner
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
| | - Luis C. Balbás
- Departamento de Física Teórica; Universidad de Valladolid; Paseo Belén 7 47011 Valladolid Spain
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft; Faradayweg 4-6 14195 Berlin Germany
- Institut für Optik und Atomare Physik; TU Berlin; Hardenbergstraße 36 10623 Berlin Germany
| | - Ewald Janssens
- Laboratory of Solid State Physics & Magnetism; KU Leuven; Celestijnenlaan 200D 3001 Leuven Belgium
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26
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Engineering Redox Potential of Lithium Clusters for Electrode Material in Lithium-Ion Batteries. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1260-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Wisniewska J, Ziolek M. Formation of Pt–Ag alloy on different silicas – surface properties and catalytic activity in oxidation of methanol. RSC Adv 2017. [DOI: 10.1039/c6ra28365a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pt–Ag alloy is formed on silicas if Ag/Pt ≥ 2.5 and gives the highest methyl formate selectivity in methanol oxidation.
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Affiliation(s)
- Joanna Wisniewska
- Adam Mickiewicz University in Poznan
- Faculty of Chemistry
- 61-614 Poznan
- Poland
| | - Maria Ziolek
- Adam Mickiewicz University in Poznan
- Faculty of Chemistry
- 61-614 Poznan
- Poland
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28
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Cooperative Effects in Clusters and Oligonuclear Complexes of Transition Metals in Isolation. STRUCTURE AND BONDING 2016. [DOI: 10.1007/430_2016_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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29
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Chaudhuri D, Jin W, Lefkidis G, Hübner W. Ab initio theory for femtosecond spin dynamics, angle-resolved fidelity analysis, and the magneto-optical Kerr effect in the Ni3(CH3OH) and Co3+(CH3OH) clusters. J Chem Phys 2015; 143:174303. [DOI: 10.1063/1.4932949] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D. Chaudhuri
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, P.O. Box 3049, 67653 Kaiserslautern, Germany
| | - W. Jin
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, P.O. Box 3049, 67653 Kaiserslautern, Germany
- School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
| | - G. Lefkidis
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, P.O. Box 3049, 67653 Kaiserslautern, Germany
| | - W. Hübner
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, P.O. Box 3049, 67653 Kaiserslautern, Germany
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30
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Dillinger S, Mohrbach J, Hewer J, Gaffga M, Niedner-Schatteburg G. Infrared spectroscopy of N2 adsorption on size selected cobalt cluster cations in isolation. Phys Chem Chem Phys 2015; 17:10358-62. [PMID: 25823978 DOI: 10.1039/c5cp00047e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report IR active N2 stretching frequencies in isolated and size selected cobalt cluster nitrogen adsorbate complexes, [Con(N2)1](+) as recorded by virtue of InfraRed Photon Dissociation (IRPD) spectroscopy. The observed frequencies of the [Con(N2)1](+) complexes (n = 8-17) are significantly redshifted (2180 to 2290 cm(-1)) with respect to the IR inactive vibrations of free N2 (2359 cm(-1)). These bands are assigned to a μ1 head-on type of coordination of the N2 to the cobalt cluster surface, revealing remarkable cluster size dependent features to interpret.
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Affiliation(s)
- Sebastian Dillinger
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
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31
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32
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Liang Y, Ma L, Wang J, Wang G. Multistep reactions of water with small Pdn clusters: A first principles study. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2015. [DOI: 10.1142/s0219633615500170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Multistep dissociative chemisorption reactions of water with Pd 4 and Pd 7 clusters were studied using density functional theory. The adsorption energies and referred adsorption sites from water molecule ( H 2 O ) to partially dissociative ( H 2+ O and OH + H ), then to fully dissociative ( O + H + H ) configurations are carefully determined. It is found that the adsorption energies of three dissociative reactions are 5–6 times larger than that of water molecule. Atop sites of Pd 4 and Pd 7 clusters are found to be the most stable sites for the adsorbed H 2 O molecule. For the coadsorption cases of partially and fully dissociated products, H 2 and OH molecules preferably tend to bind at the low coordination (atop or bridge) sites, and O and H atoms prefer to adsorb on the high coordination (hollow) sites. It is also found that the most favorable adsorption sites for the molecular adsorbates ( H 2 O , H 2 and OH ) are adjacent to the Pd atoms with the largest site-specific polarizabilities. Therefore, site-specific polarizability is a good predictor of the favorable adsorption sites for the weakly bound molecules. The different directions of charge transfer between the Pd clusters and the adsorbate(s) is observed. Furthermore, the processes of the adsorption, dissociation, and the dissociative products diffusion of H 2 O are analyzed.
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Affiliation(s)
- Yanhua Liang
- School of Physics, Northwest University, Xi'an 710069, P. R. China
| | - Li Ma
- School of Physics, Northwest University, Xi'an 710069, P. R. China
| | - Jianguang Wang
- Institute of Photonics and Photo-Technology, Northwest University, Xi'an 710069, P. R. China
| | - Guanghou Wang
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China
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33
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Thomas BJ, Harruff-Miller BA, Bunker CE, Lewis WK. Infrared spectroscopy of Mg-CO2 and Al-CO2 complexes in helium nanodroplets. J Chem Phys 2015; 142:174310. [PMID: 25956103 PMCID: PMC6910599 DOI: 10.1063/1.4919693] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 04/22/2015] [Indexed: 11/15/2022] Open
Abstract
The catalytic reduction of CO2 to produce hydrocarbon fuels is a topic that has gained significant attention. Development of efficient catalysts is a key enabler to such approaches, and metal-based catalysts have shown promise towards this goal. The development of a fundamental understanding of the interactions between CO2 molecules and metal atoms is expected to offer insight into the chemistry that occurs at the active site of such catalysts. In the current study, we utilize helium droplet methods to assemble complexes composed of a CO2 molecule and a Mg or Al atom. High-resolution infrared (IR) spectroscopy and optically selected mass spectrometry are used to probe the structure and binding of the complexes, and the experimental observations are compared with theoretical results determined from ab initio calculations. In both the Mg-CO2 and Al-CO2 systems, two IR bands are obtained: one assigned to a linear isomer and the other assigned to a T-shaped isomer. In the case of the Mg-CO2 complexes, the vibrational frequencies and rotational constants associated with the two isomers are in good agreement with theoretical values. In the case of the Al-CO2 complexes, the vibrational frequencies agree with theoretical predictions; however, the bands from both structural isomers exhibit significant homogeneous broadening sufficient to completely obscure the rotational structure of the bands. The broadening is consistent with an upper state lifetime of 2.7 ps for the linear isomer and 1.8 ps for the T-shaped isomer. The short lifetime is tentatively attributed to a prompt photo-induced chemical reaction between the CO2 molecule and the Al atom comprising the complex.
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Affiliation(s)
| | - Barbara A Harruff-Miller
- Energy Technology & Materials Division, University of Dayton Research Institute, Dayton, Ohio 45469, USA
| | - Christopher E Bunker
- Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - William K Lewis
- Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA
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34
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Pelzer AW, Jellinek J, Jackson KA. H2 Saturation on Palladium Clusters. J Phys Chem A 2015; 119:3594-603. [DOI: 10.1021/jp512643a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Adam W. Pelzer
- Department
of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Physics and Science of Advanced Materials Ph.D. Program, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
| | - Julius Jellinek
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Koblar A. Jackson
- Department
of Physics and Science of Advanced Materials Ph.D. Program, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
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35
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Galitskiy SA, Artemyev AN, Jänkälä K, Lagutin BM, Demekhin PV. Hartree-Fock calculation of the differential photoionization cross sections of small Li clusters. J Chem Phys 2015; 142:034306. [DOI: 10.1063/1.4905722] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. A. Galitskiy
- Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - A. N. Artemyev
- Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - K. Jänkälä
- Department of Physics, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
| | - B. M. Lagutin
- Research Institute of Physics, Southern Federal University, Stachki Ave. 194, 344090 Rostov-on-Don, Russia
| | - Ph. V. Demekhin
- Institut für Physik, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
- Research Institute of Physics, Southern Federal University, Stachki Ave. 194, 344090 Rostov-on-Don, Russia
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36
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Schmidt M, Masson A, Cheng HP, Bréchignac C. Physisorption and Chemisorption on Silver Clusters. Chemphyschem 2015; 16:855-65. [DOI: 10.1002/cphc.201402726] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 11/06/2022]
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37
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Parry IS, Kartouzian A, Hamilton SM, Balaj OP, Beyer MK, Mackenzie SR. Chemical Reactivity on Gas-Phase Metal Clusters Driven by Blackbody Infrared Radiation. Angew Chem Int Ed Engl 2014; 54:1357-60. [DOI: 10.1002/anie.201409483] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 11/05/2014] [Indexed: 12/27/2022]
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Parry IS, Kartouzian A, Hamilton SM, Balaj OP, Beyer MK, Mackenzie SR. Durch Schwarzkörperstrahlung angetriebene chemische Reaktivität auf Metallclustern in der Gasphase. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Watanabe Y. Atomically precise cluster catalysis towards quantum controlled catalysts. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2014; 15:063501. [PMID: 27877723 PMCID: PMC5090382 DOI: 10.1088/1468-6996/15/6/063501] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 10/29/2014] [Accepted: 10/14/2014] [Indexed: 05/30/2023]
Abstract
Catalysis of atomically precise clusters supported on a substrate is reviewed in relation to the type of reactions. The catalytic activity of supported clusters has generally been discussed in terms of electronic structure. Several lines of evidence have indicated that the electronic structure of clusters and the geometry of clusters on a support, including the accompanying cluster-support interaction, are strongly correlated with catalytic activity. The electronic states of small clusters would be easily affected by cluster-support interactions. Several studies have suggested that it is possible to tune the electronic structure through atomic control of the cluster size. It is promising to tune not only the number of cluster atoms, but also the hybridization between the electronic states of the adsorbed reactant molecules and clusters in order to realize a quantum-controlled catalyst.
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Chaves AS, Rondina GG, Piotrowski MJ, Tereshchuk P, Da Silva JLF. The Role of Charge States in the Atomic Structure of Cun and Ptn (n = 2–14 atoms) Clusters: A DFT Investigation. J Phys Chem A 2014; 118:10813-21. [DOI: 10.1021/jp508220h] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | | | - Maurício J. Piotrowski
- Departamento
de Física, Universidade Federal de Pelotas, Caixa Postal 354, 96010-900 Pelotas, Rio Grande
do Sul, Brazil
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Gui R, Wang Y, Sun J. Protein-stabilized fluorescent nanocrystals consisting of a gold core and a silver shell for detecting the total amount of cysteine and homocysteine. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1233-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
Small, negatively charged gold clusters isolated in vacuum can oxidize CO via electron-transfer-mediated activation of O2. This suggests that Au clusters can act as aerobic oxidation catalysts in the real world when their structure parameters satisfy given required conditions. However, there is a technical challenge for the development of Au cluster oxidation catalysts; the structural parameters of the Au clusters, such as size and composition, must be precisely controlled because the intrinsic chemical properties of the clusters are strongly dependent on these parameters. This Account describes our efforts to achieve precision synthesis of small (diameter <2 nm) Au clusters, stabilized by polymers and immobilized on supports, for a variety of catalytic applications. Since we aim to develop Au cluster catalysts by taking full advantage of their intrinsic, size-specific chemical nature, we chose chemically inert materials for the stabilizers and supports. We began by preparing small Au clusters weakly stabilized by polyvinylpyrrolidone (PVP) to test the hypothesis that small Au clusters in the real world will also show size-specific oxidation catalysis. The size of Au:PVP was controlled using a microfluidic device and monitored by mass spectrometry. We found that only Au clusters smaller than a certain critical size show a variety of aerobic oxidation reactions and proposed that the reactions proceed via catalytic activation of O2 by negatively charged Au clusters. We also developed a method to precisely control the size and composition of supported Au clusters using ligand-protected Au and Au-based bimetallic clusters as precursors. These small Au clusters immobilized on mesoporous silica, hydroxyapatite, and carbon nanotubes acted as oxidation catalysts. We have demonstrated for the first time an optimal Au cluster size for the oxidation of cyclohexane and a remarkable improvement in the oxidation catalysis of Au25 clusters by single-atom Pd doping. The non-scalable catalysis of Au clusters that we reported here points to the possibility that novel catalysis beyond that expected from bulk counterparts can be developed simply by reducing the catalyst size to the sub-2 nm regime.
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Affiliation(s)
- Seiji Yamazoe
- Department of Chemistry, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Kyoto 606-8501, Japan
| | - Kiichirou Koyasu
- Department of Chemistry, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Tatsuya Tsukuda
- Department of Chemistry, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Kyoto 606-8501, Japan
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Serebrennikov LV, Golovkin AV, Davlyatshin DI, Serebrennikova AL. Quantum chemical calculations and the structure of Ni n (C2H2) complexes (n = 1–4). RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024414020228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Torbatian Z, Hashemifar SJ, Akbarzadeh H. First-principles insights into interaction of CO, NO, and HCN with Ag8. J Chem Phys 2014; 140:084314. [DOI: 10.1063/1.4865947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Hübner O, Himmel HJ. Isomers and electronic states of Ni2O2H2 and evaluation of the effect of charge on the electronic properties and reactivity of Ni2O2. J Phys Chem A 2013; 117:12635-41. [PMID: 24224934 DOI: 10.1021/jp409138a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Different isomers of Ni2O2H2 are investigated by multireference configuration interaction (MRCI) calculations, based on complete active space self-consistent field (CASSCF) calculations. The lowest-lying Ni2(OH)2 isomer has a rhombic shape with two OH(-) groups bridging two Ni(I) ions. Its ground term is a (1)Ag term. At a relative energy of 1.06 eV, there is a chain-like NiONi(OH2) isomer. A rhombic (NiH)2O2 isomer with Ni-H bonds has a considerably higher energy of 2.93 eV. Both Ni2(OH)2 and NiONi(OH2) feature a large number of low-lying electronic terms that in the case of Ni2(OH)2 form Heisenberg spin ladders due to the coupling of the electrons of two Ni(I) ions (3d(8)4s(1)) with S = 3/2. For the reaction Ni2O2 + H2 → Ni2(OH)2, the reaction energy is estimated to -2 eV. Finally, neutral and charged Ni2O2 and their hydrogenation products (Ni2O2H2(0/+)) are compared.
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Affiliation(s)
- Olaf Hübner
- Anorganisch-Chemisches Institut, Universität Heidelberg , Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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Parry IS, Kartouzian A, Hamilton SM, Balaj OP, Beyer MK, Mackenzie SR. Collisional Activation of N2O Decomposition and CO Oxidation Reactions on Isolated Rhodium Clusters. J Phys Chem A 2013; 117:8855-63. [DOI: 10.1021/jp405267p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Imogen S. Parry
- Department
of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, United Kingdom
| | - Aras Kartouzian
- Department
of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, United Kingdom
| | - Suzanne M. Hamilton
- Department
of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, United Kingdom
| | - O. Petru Balaj
- Institut
für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, 24098 Kiel, Germany
| | - Martin K. Beyer
- Institut
für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, 24098 Kiel, Germany
| | - Stuart R. Mackenzie
- Department
of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, United Kingdom
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Affiliation(s)
- Eric W. McFarland
- Department
of Chemical Engineering, and ‡Department of Chemistry and Biochemistry, University of California, Santa Barbara,
California 93106, United States
| | - Horia Metiu
- Department
of Chemical Engineering, and ‡Department of Chemistry and Biochemistry, University of California, Santa Barbara,
California 93106, United States
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50
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Javan MJ, Jamshidi Z, Tehrani ZA, Fattahi A. Interactions of coinage metal clusters with histidine and their effects on histidine acidity; theoretical investigation. Org Biomol Chem 2012; 10:9373-82. [PMID: 23108513 DOI: 10.1039/c2ob25711d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the nature of interaction between metal nanoparticles and biomolecules such as amino acids is important in the development and design of biosensors. In this paper, binding of M(3) clusters (M = Au, Ag and Cu) with neutral and anionic forms of histidine amino acid was studied using density functional theory (DFT-B3LYP). It was found that the interaction of histidine with M(3) clusters is governed by two major bonding factors: (a) the anchoring N-M and O-M bonds and (b) the nonconventional N-H···M and O-H···M hydrogen bonds. The nature of these chemical bonds has been investigated based on quantum theory of atoms in molecules (QTAIM) and natural bond orbital (NBO) analyses. In the next step, the effects of Au, Ag and Cu metal clusters on the gas-phase acidity of weak organic acid (histidine) have been explored. The acidity of isolated histidine was compared with the acidity of its Au(3)-, Ag(3)- and Cu(3)-complexed species. Results indicate that upon complexation with M(3) clusters (at 298 K), the gas-phase acidity (GPA) of histidine varies from 339.5 to 312.3, 315.0, and 313.7 kcal mol(-1) for Au(3)-, Ag(3)- and Cu(3)-His complexes, respectively (i.e., its dissociation becomes much less endothermic). These values indicate that a weak organic acid can be converted to a super acid when it is complexed with metal clusters. Also, in order to investigate the acidity value of the imidazole moiety in histidine, histidine methyl ester (His-OMe) was selected. Similarly, the acidity of this compound was compared with the acidity of their Au(3), Ag(3) and Cu(3)-complexed species. After complexation with M(3) clusters at 298 K, the gas-phase acidity (GPA) of His-OMe varies from 333.0 to 280.0, 304.2 and 291.5 kcal mol(-1), respectively. Moreover, pK(a) values were determined in water for isolated and complexed species of His and His-OMe. The resulting pK(a) values were found to decrease upon complexation with M(3) clusters.
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Affiliation(s)
- Marjan Jebeli Javan
- Department of Chemistry, Sharif University of Technology, P.O. Box: 11365-9516, Tehran, Iran
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