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Zupanc A, Install J, Weckman T, Melander MM, Heikkilä MJ, Kemell M, Honkala K, Repo TJ. Sequential Selective Dissolution of Coinage Metals in Recyclable Ionic Media. Angew Chem Int Ed Engl 2024:e202407147. [PMID: 38742485 DOI: 10.1002/anie.202407147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/16/2024]
Abstract
Coinage metals Cu, Ag and Au are essential for modern electronics and their recycling from waste materials is becoming increasingly important to guarantee the security of their supply. Designing new sustainable and selective procedures that would substitute currently used processes is crucial. Here, we describe an unprecedented approach for the sequential dissolution of single metals from Cu, Ag and Au mixtures using biomass-derived ionic solvents and green oxidants. First, Cu can be selectively dissolved in the presence of Ag and Au with choline chloride/urea/H2O2 mixture, followed by the dissolution of Ag in lactic acid/H2O2. Finally, the metallic Au, which is not soluble in either solution above, is dissolved in choline chloride/urea/Oxone. Subsequently, the metals were simply and quantitatively recovered from dissolutions, and the solvents recycled and reused. The applicability of developed approach was demonstrated by recovering metals from electronic waste substrates such as printed circuit boards, gold fingers and solar panels. The dissolution reactions and selectivity were explored with different analytical techniques and DFT calculations. We anticipate our approach will pave a new way for contemporary and sustainable recycling of multi-metal waste substrates.
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Affiliation(s)
- Anže Zupanc
- Helsingin Yliopisto, Department of Chemistry, Faculty of Science, FINLAND
| | - Joseph Install
- Helsingin Yliopisto, Department of Chemistry, Faculty of Science, FINLAND
| | - Timo Weckman
- Jyväskylän yliopisto, Department of Chemistry, Nanoscience Center, FINLAND
| | - Marko M Melander
- Jyväskylän yliopisto, Department of Chemistry, Nanoscience Center, FINLAND
| | - Mikko J Heikkilä
- Helsingin Yliopisto, Department of Chemistry, Faculty of Science, FINLAND
| | - Marianna Kemell
- Helsingin Yliopisto, Department of Chemistry, Faculty of Science, FINLAND
| | - Karoliina Honkala
- Jyväskylän yliopisto, Department of Chemistry, Nanoscience Center, FINLAND
| | - Timo Juhani Repo
- University of Helsinki, Department of Chemistry, PO Box 55 A.I. Virtasen aukio 1, Laboratory of Inorganic Chemistry, FIN-00014, Helsinki, FINLAND
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2
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Qin X, Hansen HA, Honkala K, Melander MM. Cation-induced changes in the inner- and outer-sphere mechanisms of electrocatalytic CO 2 reduction. Nat Commun 2023; 14:7607. [PMID: 37993426 PMCID: PMC10665450 DOI: 10.1038/s41467-023-43300-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 11/03/2023] [Indexed: 11/24/2023] Open
Abstract
The underlying mechanism of cation effects on CO2RR remains debated. Herein, we study cation effects by simulating both outer-sphere electron transfer (OS-ET) and inner-sphere electron transfer (IS-ET) pathways during CO2RR via constrained density functional theory molecular dynamics (cDFT-MD) and slow-growth DFT-MD (SG-DFT-MD), respectively. Our results show without any cations, only OS-ET is feasible with a barrier of 1.21 eV. In the presence of K+ (Li+), OS-ET shows a very high barrier of 2.93 eV (4.15 eV) thus being prohibited. However, cations promote CO2 activation through IS-ET with the barrier of only 0.61 eV (K+) and 0.91 eV (Li+), generating the key intermediate (adsorbed CO[Formula: see text]). Without cations, CO2-to-CO[Formula: see text](ads) conversion cannot proceed. Our findings reveal cation effects arise from short-range Coulomb interactions with reaction intermediates. These results disclose that cations modulate the inner- and outer-sphere pathways of CO2RR, offering substantial insights on the cation specificity in the initial CO2RR steps.
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Affiliation(s)
- Xueping Qin
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej Building 301, Kgs. Lyngby, 2800, Denmark.
| | - Heine A Hansen
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej Building 301, Kgs. Lyngby, 2800, Denmark
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland
| | - Marko M Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014, Jyväskylä, Finland.
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3
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Kumeda T, Laverdure L, Honkala K, Melander MM, Sakaushi K. Cations Determine the Mechanism and Selectivity of Alkaline Oxygen Reduction Reaction on Pt(111). Angew Chem Int Ed Engl 2023:e202312841. [PMID: 37983729 DOI: 10.1002/anie.202312841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Indexed: 11/22/2023]
Abstract
The proton-coupled electron transfer (PCET) mechanism of the oxygen reduction reaction (ORR) is a long-standing enigma in electrocatalysis. Despite decades of research, the factors determining the microscopic mechanism of ORR-PCET as a function of pH, electrolyte, and electrode potential remain unresolved, even on the prototypical Pt(111) surface. Herein, we integrate advanced experiments, simulations, and theory to uncover the mechanism of the cation effects on alkaline ORR on well-defined Pt(111). We unveil a dual-cation effect where cations simultaneously determine i) the active electrode surface by controlling the formation of Pt-O and Pt-OH overlayers and ii) the competition between inner- and outer-sphere PCET steps. The cation-dependent transition from Pt-O to Pt-OH determines the ORR mechanism, activity, and selectivity. These findings provide direct evidence that the electrolyte affects the ORR mechanism and performance, with important consequences for the practical design of electrochemical systems and computational catalyst screening studies. Our work highlights the importance of complementary insight from experiments and simulations to understand how different components of the electrochemical interface contribute to electrocatalytic processes.
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Affiliation(s)
- Tomoaki Kumeda
- Research Center for Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Laura Laverdure
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Marko M Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Ken Sakaushi
- Research Center for Energy and Environmental Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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4
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Korpelin V, Sahoo G, Ikonen R, Honkala K. ReO as a Brønsted acidic modifier in glycerol hydrodeoxygenation: computational insight into the balance between acid and metal catalysis. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Korpelin V, Kiljunen T, Melander MM, Caro MA, Kristoffersen HH, Mammen N, Apaja V, Honkala K. Addressing Dynamics at Catalytic Heterogeneous Interfaces with DFT-MD: Anomalous Temperature Distributions from Commonly Used Thermostats. J Phys Chem Lett 2022; 13:2644-2652. [PMID: 35297635 PMCID: PMC8959310 DOI: 10.1021/acs.jpclett.2c00230] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/11/2022] [Indexed: 05/28/2023]
Abstract
Density functional theory-based molecular dynamics (DFT-MD) has been widely used for studying the chemistry of heterogeneous interfacial systems under operational conditions. We report frequently overlooked errors in thermostated or constant-temperature DFT-MD simulations applied to study (electro)catalytic chemistry. Our results demonstrate that commonly used thermostats such as Nosé-Hoover, Berendsen, and simple velocity-rescaling methods fail to provide a reliable temperature description for systems considered. Instead, nonconstant temperatures and large temperature gradients within the different parts of the system are observed. The errors are not a "feature" of any particular code but are present in several ab initio molecular dynamics implementations. This uneven temperature distribution, due to inadequate thermostatting, is well-known in the classical MD community, where it is ascribed to the failure in kinetic energy equipartition among different degrees of freedom in heterogeneous systems (Harvey et al. J. Comput. Chem. 1998, 726-740) and termed the flying ice cube effect. We provide tantamount evidence that interfacial systems are susceptible to substantial flying ice cube effects and demonstrate that the traditional Nosé-Hoover and Berendsen thermostats should be applied with care when simulating, for example, catalytic properties or structures of solvated interfaces and supported clusters. We conclude that the flying ice cube effect in these systems can be conveniently avoided using Langevin dynamics.
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Affiliation(s)
- Ville Korpelin
- Department
of Chemistry, Nanoscience Center, University
of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
| | - Toni Kiljunen
- Department
of Chemistry, Nanoscience Center, University
of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
| | - Marko M. Melander
- Department
of Chemistry, Nanoscience Center, University
of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
| | - Miguel A. Caro
- Department
of Electrical Engineering and Automation, Aalto University, FIN-02150 Espoo, Finland
| | | | - Nisha Mammen
- Department
of Physics,Nanoscience Center, University
of Jyväskylä, P.O. Box
35 (YN), FI-40014 Jyväskylä, Finland
| | - Vesa Apaja
- Department
of Physics,Nanoscience Center, University
of Jyväskylä, P.O. Box
35 (YN), FI-40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department
of Chemistry, Nanoscience Center, University
of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
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6
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Affiliation(s)
- Tongwei Wu
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, China
| | - Marko M. Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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7
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Mammen N, Malola S, Honkala K, Häkkinen H. Selective Acrolein Hydrogenation over Ligand-Protected Gold Clusters: A Venus Flytrap Mechanism. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nisha Mammen
- Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Sami Malola
- Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Hannu Häkkinen
- Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
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8
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Gell L, Honkala K. Ligand assisted hydrogenation of levulinic acid on Pt(111) from first principles calculations. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02048j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we investigate the hydrogenation reaction of levulinic acid to 4-hydroxypentanovic acid on a ligand-modified Pt(111) using DFT. Modifying nanoparticle surfaces with ligands can have beneficial effects on...
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9
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Verma AM, Laverdure L, Melander MM, Honkala K. Mechanistic Origins of the pH Dependency in Au-Catalyzed Glycerol Electro-oxidation: Insight from First-Principles Calculations. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anand M. Verma
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Laura Laverdure
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Marko M. Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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Abstract
CO2 adsorption and activation on a catalyst are key elementary steps for CO2 conversion to various valuable products. In the present computational study, we screened different Cu-ZrO2 interface structures and analyzed the influence of the interface structure on CO2 binding strength using density functional theory calculations. Our results demonstrate that a Cu nanorod favors one position on both tetragonal and monoclinic ZrO2 surfaces, where the bottom Cu atoms are placed close to the lattice oxygens. In agreement with previous calculations, we find that CO2 prefers a bent bidentate configuration at the Cu-ZrO2 interface and the molecule is clearly activated being negatively charged. Straining of the Cu nanorod influences CO2 adsorption energy but does not change the preferred nanorod position on zirconia. Altogether, our results highlight that CO2 adsorption and activation depend sensitively on the chemical composition and atomic structure of the interface used in the calculations. This structure sensitivity may potentially impact further catalytic steps and the overall computed reactivity profile.
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Affiliation(s)
- Lars Gell
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Aku Lempelto
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Toni Kiljunen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
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11
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Behravesh E, Melander MM, Wärnå J, Salmi T, Honkala K, Murzin DY. Oxidative dehydrogenation of ethanol on gold: Combination of kinetic experiments and computation approach to unravel the reaction mechanism. J Catal 2021. [DOI: 10.1016/j.jcat.2020.07.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Savela R, Shcherban ND, Melander MM, Bezverkhyy I, Simakova IL, Långvik O, Kholkina E, Schindler T, Krauβ A, Honkala K, Murzin DY, Leino R. Chemoselective heterogeneous iridium catalyzed hydrogenation of cinnamalaniline. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01886d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A selective atmospheric hydrogenation of unsaturated imines over heterogeneous iridium catalyst is described, in addition the selectivity is elucidated by DFT-calculations.
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13
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Mammen N, Malola S, Honkala K, Häkkinen H. Dynamics of weak interactions in the ligand layer of meta-mercaptobenzoic acid protected gold nanoclusters Au 68( m-MBA) 32 and Au 144( m-MBA) 40. Nanoscale 2020; 12:23859-23868. [PMID: 33237092 DOI: 10.1039/d0nr07366k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Atomically precise metal nanoclusters, stabilized and functionalized by organic ligands, are emerging nanomaterials with potential applications in plasmonics, nano-electronics, bio-imaging, nanocatalysis, and as therapeutic agents or drug carriers in nanomedicine. The ligand layer has an important role in modifying the physico-chemical properties of the clusters and in defining the interactions between the clusters and the environment. While this role is well recognized from a great deal of experimental studies, there is very little theoretical information on dynamical processes within the layer itself. Here, we have performed extensive molecular dynamics simulations, with forces calculated from the density functional theory, to investigate thermal stability and dynamics of the ligand layer of the meta-mercaptobenzoic acid (m-MBA) protected Au68 and Au144 nanoclusters, which are the first two gold nanoclusters structurally solved to atomic precision by electron microscopy [Azubel et al., Science, 2014, 345, 909 and ACS Nano, 2017, 11, 11866]. We visualize and analyze dynamics of three distinct non-covalent interactions, viz., ligand-ligand hydrogen bonding, metal-ligand O[double bond, length as m-dash]C-OHAu interaction, and metal-ligand Ph(π)Au interaction. We discuss their relevance for defining, at the same time, the dynamic stability and reactivity of the cluster. These interactions promote the possibility of ligand addition reactions for bio-functionalization or allow the protected cluster to act as a catalyst where active sites are dynamically accessible inside the ligand layer.
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Affiliation(s)
- Nisha Mammen
- Department of Physics, Nanoscience Center, University of Jyväskylä, Jyväskylä-40014, Finland
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14
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Kuhness D, Pal J, Yang HJ, Mammen N, Honkala K, Häkkinen H, Schneider WD, Heyde M, Freund HJ. Binding Behavior of Carbonmonoxide to Gold Atoms on Ag(001). Top Catal 2020. [DOI: 10.1007/s11244-020-01290-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractThe adsorption behavior of single CO molecules at 4 K bound to Au adatoms on a Ag(001) metal surface is studied with scanning tunneling microscopy (STM) and inelastic electron tunneling spectroscopy (IETS). In contrast to earlier observations two different binding configurations are observed—one on top of a Au adatom and the other one adsorbed laterally to Au on Ag(001). Moreover, IETS reveals different low-energy vibrational energies for the two binding sites as compared to the one for a single CO molecule bound to Ag(001). Density functional theory (DFT) calculations of the adsorption energies, the diffusion barriers, and the vibrational frequencies of the CO molecule on the different binding sites rationalize the experimental findings.
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15
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Longo A, Boed EJJ, Mammen N, Linden M, Honkala K, Häkkinen H, Jongh PE, Donoeva B. Cover Feature: Towards Atomically Precise Supported Catalysts from Monolayer‐Protected Clusters: The Critical Role of the Support (Chem. Eur. J. 31/2020). Chemistry 2020. [DOI: 10.1002/chem.202002102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alessandro Longo
- XMI, Department of Chemistry Ghent University Krijgslaan 281 S12 Ghent East Flanders 9000 Belgium
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, UOS Palermo Via Ugo La Malfa, 153 90146 Palermo Italy
| | - Ewoud J. J. Boed
- Department of Chemistry, Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Nisha Mammen
- Department of Physics Nanoscience Center University of Jyväskylä Jyväskylä 40014 Finland
| | - Marte Linden
- Department of Chemistry, Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Karoliina Honkala
- Department of Chemistry Nanoscience Center University of Jyväskylä Jyväskylä 40014 Finland
| | - Hannu Häkkinen
- Department of Physics Nanoscience Center University of Jyväskylä Jyväskylä 40014 Finland
- Department of Chemistry Nanoscience Center University of Jyväskylä Jyväskylä 40014 Finland
| | - Petra E. Jongh
- Department of Chemistry, Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Baira Donoeva
- Department of Chemistry, Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
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16
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Longo A, de Boed EJJ, Mammen N, van der Linden M, Honkala K, Häkkinen H, de Jongh PE, Donoeva B. Towards Atomically Precise Supported Catalysts from Monolayer-Protected Clusters: The Critical Role of the Support. Chemistry 2020; 26:7051-7058. [PMID: 32220016 PMCID: PMC7318640 DOI: 10.1002/chem.202000637] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 11/10/2022]
Abstract
Controlling the size and uniformity of metal clusters with atomic precision is essential for fine-tuning their catalytic properties, however for clusters deposited on supports, such control is challenging. Here, by combining X-ray absorption spectroscopy and density functional theory calculations, it is shown that supports play a crucial role in the evolution of monolayer-protected clusters into catalysts. Based on the acidic nature of the support, cluster-support interactions lead either to fragmentation of the cluster into isolated Au-ligand species or ligand-free metallic Au0 clusters. On Lewis acidic supports that bind metals strongly, the latter transformation occurs while preserving the original size of the metal cluster, as demonstrated for various Aun sizes. These findings underline the role of the support in the design of supported catalysts and represent an important step toward the synthesis of atomically precise supported nanomaterials with tailored physico-chemical properties.
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Affiliation(s)
- Alessandro Longo
- XMI, Department of Chemistry, Ghent University, Krijgslaan 281 S12, Ghent, East Flanders, 9000, Belgium.,Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, UOS Palermo, Via Ugo La Malfa, 153, 90146, Palermo, Italy
| | - Ewoud J J de Boed
- Department of Chemistry, Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Nisha Mammen
- Department of Physics, Nanoscience Center, University of Jyväskylä, Jyväskylä, 40014, Finland
| | - Marte van der Linden
- Department of Chemistry, Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, Jyväskylä, 40014, Finland
| | - Hannu Häkkinen
- Department of Physics, Nanoscience Center, University of Jyväskylä, Jyväskylä, 40014, Finland.,Department of Chemistry, Nanoscience Center, University of Jyväskylä, Jyväskylä, 40014, Finland
| | - Petra E de Jongh
- Department of Chemistry, Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Baira Donoeva
- Department of Chemistry, Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
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17
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Abstract
Kinetic and thermodynamic stability of single-atom and nanocluster catalysts is addressed under reaction conditions within a DFT-parametrised multi-scale thermodynamic framework combining atomistic, non-equilibrium, and nanothermodynamics.
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Affiliation(s)
| | - Marko M. Melander
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- Finland
| | - Karoliina Honkala
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- Finland
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18
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Kauppinen MM, Korpelin V, Verma AM, Melander MM, Honkala K. Escaping scaling relationships for water dissociation at interfacial sites of zirconia-supported Rh and Pt clusters. J Chem Phys 2019; 151:164302. [DOI: 10.1063/1.5126261] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Minttu M. Kauppinen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Ville Korpelin
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Anand Mohan Verma
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Marko M. Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YN), Jyväskylä FI-40014, Finland
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Sun C, Mammen N, Kaappa S, Yuan P, Deng G, Zhao C, Yan J, Malola S, Honkala K, Häkkinen H, Teo BK, Zheng N. Atomically Precise, Thiolated Copper-Hydride Nanoclusters as Single-Site Hydrogenation Catalysts for Ketones in Mild Conditions. ACS Nano 2019; 13:5975-5986. [PMID: 31067029 PMCID: PMC6750866 DOI: 10.1021/acsnano.9b02052] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/08/2019] [Indexed: 05/19/2023]
Abstract
Copper-hydrides are known catalysts for several technologically important reactions such as hydrogenation of CO, hydroamination of alkenes and alkynes, and chemoselective hydrogenation of unsaturated ketones to unsaturated alcohols. Stabilizing copper-based particles by ligand chemistry to nanometer scale is an appealing route to make active catalysts with optimized material economy; however, it has been long believed that the ligand-metal interface, particularly if sulfur-containing thiols are used as stabilizing agent, may poison the catalyst. We report here a discovery of an ambient-stable thiolate-protected copper-hydride nanocluster [Cu25H10(SPhCl2)18]3- that readily catalyzes hydrogenation of ketones to alcohols in mild conditions. A full experimental and theoretical characterization of its atomic and electronic structure shows that the 10 hydrides are instrumental for the stability of the nanocluster and are in an active role being continuously consumed and replenished in the hydrogenation reaction. Density functional theory computations suggest, backed up by the experimental evidence, that the hydrogenation takes place only around a single site of the 10 hydride locations, rendering the [Cu25H10(SPhCl2)18]3- one of the first nanocatalysts whose structure and catalytic functions are characterized fully to atomic precision. Understanding of a working catalyst at the atomistic level helps to optimize its properties and provides fundamental insights into the controversial issue of how a stable, ligand-passivated, metal-containing nanocluster can be at the same time an active catalyst.
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Affiliation(s)
- Cunfa Sun
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nisha Mammen
- Department of Physics and Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Sami Kaappa
- Department of Physics and Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Peng Yuan
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guocheng Deng
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Chaowei Zhao
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Juanzhu Yan
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Sami Malola
- Department of Physics and Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Physics and Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Hannu Häkkinen
- Department of Physics and Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- E-mail:
| | - Boon K. Teo
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory
for Physical Chemistry of Solid Surfaces, Collaborative Innovation
Center of Chemistry for Energy Materials, National & Local Joint
Engineering Research Center of Preparation Technology of Nanomaterials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- E-mail:
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20
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Melander MM, Kuisma MJ, Christensen TEK, Honkala K. Grand-canonical approach to density functional theory of electrocatalytic systems: Thermodynamics of solid-liquid interfaces at constant ion and electrode potentials. J Chem Phys 2019; 150:041706. [PMID: 30709274 DOI: 10.1063/1.5047829] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Properties of solid-liquid interfaces are of immense importance for electrocatalytic and electrochemical systems, but modeling such interfaces at the atomic level presents a serious challenge and approaches beyond standard methodologies are needed. An atomistic computational scheme needs to treat at least part of the system quantum mechanically to describe adsorption and reactions, while the entire system is in thermal equilibrium. The experimentally relevant macroscopic control variables are temperature, electrode potential, and the choice of the solvent and ions, and these need to be explicitly included in the computational model as well; this calls for a thermodynamic ensemble with fixed ion and electrode potentials. In this work, a general framework within density functional theory (DFT) with fixed electron and ion chemical potentials in the grand canonical (GC) ensemble is established for modeling electrocatalytic and electrochemical interfaces. Starting from a fully quantum mechanical description of multi-component GC-DFT for nuclei and electrons, a systematic coarse-graining is employed to establish various computational schemes including (i) the combination of classical and electronic DFTs within the GC ensemble and (ii) on the simplest level a chemically and physically sound way to obtain various (modified) Poisson-Boltzmann (mPB) implicit solvent models. The detailed and rigorous derivation clearly establishes which approximations are needed for coarse-graining as well as highlights which details and interactions are omitted in vein of computational feasibility. The transparent approximations also allow removing some of the constraints and coarse-graining if needed. We implement various mPB models within a linear dielectric continuum in the GPAW code and test their capabilities to model capacitance of electrochemical interfaces as well as study different approaches for modeling partly periodic charged systems. Our rigorous and well-defined DFT coarse-graining scheme to continuum electrolytes highlights the inadequacy of current linear dielectric models for treating properties of the electrochemical interface.
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Affiliation(s)
- Marko M Melander
- Nanoscience Center, Department of Chemistry, University of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
| | - Mikael J Kuisma
- Nanoscience Center, Department of Chemistry, University of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
| | | | - Karoliina Honkala
- Nanoscience Center, Department of Chemistry, University of Jyväskylä, P.O. Box 35 (YN), FI-40014 Jyväskylä, Finland
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21
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Kauppinen MM, Melander MM, Bazhenov AS, Honkala K. Unraveling the Role of the Rh–ZrO2 Interface in the Water–Gas-Shift Reaction via a First-Principles Microkinetic Study. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02596] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Minttu M. Kauppinen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Marko M. Melander
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Andrey S. Bazhenov
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
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22
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Kovács B, Savela R, Honkala K, Murzin DY, Forró E, Fülöp F, Leino R. Racemization of Secondary-Amine-Containing Natural Products Using Heterogeneous Metal Catalysts. ChemCatChem 2018. [DOI: 10.1002/cctc.201800293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Barbara Kovács
- Laboratory of Organic Chemistry; Åbo Akademy University; Turku Finland
- Johan Gadolin Process Chemistry Centre; Åbo Akademy University; Turku Finland
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Risto Savela
- Laboratory of Organic Chemistry; Åbo Akademy University; Turku Finland
- Johan Gadolin Process Chemistry Centre; Åbo Akademy University; Turku Finland
| | - Karoliina Honkala
- Department of Chemistry Nanoscience Center; University of Jyväskylä; Jyväskylä Finland
| | - Dmitry Yu. Murzin
- Johan Gadolin Process Chemistry Centre; Åbo Akademy University; Turku Finland
- Laboratory of Industrial Chemistry and Reaction Engineering; Åbo Akademy University; Turku Finland
| | - Enikő Forró
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Reko Leino
- Laboratory of Organic Chemistry; Åbo Akademy University; Turku Finland
- Johan Gadolin Process Chemistry Centre; Åbo Akademy University; Turku Finland
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23
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Bazhenov A, Kauppinen MM, Honkala K. DFT Prediction of Enhanced Reducibility of Monoclinic Zirconia upon Rhodium Deposition. J Phys Chem C Nanomater Interfaces 2018; 122:6774-6778. [PMID: 30258520 PMCID: PMC6150675 DOI: 10.1021/acs.jpcc.8b01046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Oxides are an important class of materials and are widely used, for example, as supports in heterogeneous catalysis. In a number of industrial catalytic processes, oxide supports actively participate in chemical transformations by releasing lattice oxygen anions. While this is intuitively understood for reducible oxides, the reducibility of irreducible oxides may be modified via nanoengineering or upon inclusion of foreign species. Our calculations predict that the ability of irreducible monoclinic zirconia to release oxygen improves substantially upon deposition of rhodium. Through a comprehensive screening of Rh/ZrO2 with different size of the rhodium species, we find that a Rh adatom and a Rh4 nanocluster have the largest impact on the reducibility of zirconia. With increasing size the effect of rhodium decays. Our findings demonstrate that the phenomenon of enhanced reducibility of irreducible oxides in the presence of metals should be considered when interpreting experimental and computational results, as reactions that involve release of oxygen from an oxide support might be possible for irreducible oxides.
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24
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Chun HJ, Apaja V, Clayborne A, Honkala K, Greeley J. Atomistic Insights into Nitrogen-Cycle Electrochemistry: A Combined DFT and Kinetic Monte Carlo Analysis of NO Electrochemical Reduction on Pt(100). ACS Catal 2017. [DOI: 10.1021/acscatal.7b00547] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hee-Joon Chun
- Davidson
School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Vesa Apaja
- Department
of Physics, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FI-40014 Jyväskylä, Finland
| | - Andre Clayborne
- Department
of Chemistry, University of Missouri−Kansas City, 5110 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Karoliina Honkala
- Department
of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FI-40014 Jyväskylä, Finland
| | - Jeffrey Greeley
- Davidson
School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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25
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26
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Tuokko S, Honkala K, Pihko PM. Pd/C-Catalyzed Hydrosilylation of Enals and Enones with Triethylsilane: Conformer Populations Control the Stereoselectivity. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02856] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sakari Tuokko
- Department of Chemistry,
Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry,
Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Petri M. Pihko
- Department of Chemistry,
Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
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27
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28
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Tuokko S, Pihko PM, Honkala K. First Principles Calculations for Hydrogenation of Acrolein on Pd and Pt: Chemoselectivity Depends on Steric Effects on the Surface. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507631] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sakari Tuokko
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
| | - Petri M. Pihko
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
| | - Karoliina Honkala
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
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29
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Tuokko S, Pihko PM, Honkala K. First Principles Calculations for Hydrogenation of Acrolein on Pd and Pt: Chemoselectivity Depends on Steric Effects on the Surface. Angew Chem Int Ed Engl 2016; 55:1670-4. [DOI: 10.1002/anie.201507631] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/13/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Sakari Tuokko
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
| | - Petri M. Pihko
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
| | - Karoliina Honkala
- Department of Chemistry; Nanoscience Center; University of Jyväskylä; P.O. Box 35 40014 Jyväskylä Finland
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30
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Abstract
Using density functional theory (DFT) calculations, we address the adsorption of O2 and the coadsorption of gold species and oxygen molecules on a Mo-doped CaO(001) surface with 1.25% impurity concentration.
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Affiliation(s)
- Janne Nevalaita
- Department of Physics
- Nanoscience Center
- University of Jyväskylä
- FI-40014 Jyväskylä
- Finland
| | - Hannu Häkkinen
- Department of Physics
- Nanoscience Center
- University of Jyväskylä
- FI-40014 Jyväskylä
- Finland
| | - Karoliina Honkala
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- FI-40014 Jyväskylä
- Finland
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31
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Calaza F, Stiehler C, Fujimori Y, Sterrer M, Beeg S, Ruiz-Oses M, Nilius N, Heyde M, Parviainen T, Honkala K, Häkkinen H, Freund HJ. Carbon Dioxide Activation and Reaction Induced by Electron Transfer at an Oxide-Metal Interface. Angew Chem Int Ed Engl 2015; 54:12484-7. [DOI: 10.1002/anie.201501420] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/15/2015] [Indexed: 11/07/2022]
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32
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Calaza F, Stiehler C, Fujimori Y, Sterrer M, Beeg S, Ruiz-Oses M, Nilius N, Heyde M, Parviainen T, Honkala K, Häkkinen H, Freund HJ. Aktivierung und Elektronentransfer-induzierte Reaktion von Kohlendioxid an einer Oxid-Metall-Grenzfläche. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501420] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Abstract
This review is focused on the surface sites of monoclinic zirconia, especially surface hydroxyls and their manipulation, and the interaction of CO with zirconia to form linearly adsorbed CO and formates.
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Affiliation(s)
- Sonja Kouva
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- Finland
| | - Karoliina Honkala
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- 40014 Jyväskylä
- Finland
| | - Leon Lefferts
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- Finland
- Faculty of Science & Technology
- University of Twente
| | - Jaana Kanervo
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- Finland
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34
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Martin G, Mäki-Arvela P, Wärnå J, Honkala K, Murzin DY, Salmi T. Kinetic Modeling of Ethyl Benzoylformate Enantioselective Hydrogenation over Pt/Al 2O 3. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502170y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gerson Martin
- Åbo Akademi University, Process Chemistry Centre,
Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku/Åbo, Finland
| | - Päivi Mäki-Arvela
- Åbo Akademi University, Process Chemistry Centre,
Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku/Åbo, Finland
| | - Johan Wärnå
- Åbo Akademi University, Process Chemistry Centre,
Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku/Åbo, Finland
| | - Karoliina Honkala
- Department
of Physics, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FIN-40014 Jyväskylä, Finland
| | - Dmitry Yu. Murzin
- Åbo Akademi University, Process Chemistry Centre,
Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku/Åbo, Finland
| | - Tapio Salmi
- Åbo Akademi University, Process Chemistry Centre,
Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku/Åbo, Finland
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35
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El-Khoury PZ, Honkala K, Hess WP. Electronic and Vibrational Properties of meso-Tetraphenylporphyrin on Silver Substrates. J Phys Chem A 2014; 118:8115-23. [DOI: 10.1021/jp412360b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Patrick Z. El-Khoury
- Physical
Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Karoliina Honkala
- Department
of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FIN-40014 Jyväskylä, Finland
| | - Wayne P. Hess
- Physical
Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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36
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Kouva S, Andersin J, Honkala K, Lehtonen J, Lefferts L, Kanervo J. Water and carbon oxides on monoclinic zirconia: experimental and computational insights. Phys Chem Chem Phys 2014; 16:20650-64. [DOI: 10.1039/c4cp02742f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Formates form via gas-phase or linearly adsorbed CO and decompose either reversibly to CO or reductively to CO2 and H2.
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Affiliation(s)
- Sonja Kouva
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
| | - Jenni Andersin
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- 40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- 40014 Jyväskylä, Finland
| | - Juha Lehtonen
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
| | - Leon Lefferts
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
- Faculty of Science & Technology
- University of Twente
| | - Jaana Kanervo
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
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Affiliation(s)
- Lauri Nykänen
- Department of Chemistry,
Nanoscience Center, University of Jyväskylä, P.O. Box 35, FIN-40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry,
Nanoscience Center, University of Jyväskylä, P.O. Box 35, FIN-40014 Jyväskylä, Finland
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38
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Honkala K, Łodziana Z, Remediakis IN, Lopez N. Expanding and Reducing Complexity in Materials Science Models with Relevance in Catalysis and Energy. Top Catal 2013. [DOI: 10.1007/s11244-013-0158-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Lee J, Perdue SM, Perez AR, El-Khoury PZ, Honkala K, Apkarian VA. Orbiting Orbitals: Visualization of Vibronic Motion at a Conical Intersection. J Phys Chem A 2013; 117:11655-64. [DOI: 10.1021/jp311894n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joonhee Lee
- Department of Chemistry, University of California—Irvine, Irvine, California 92697-2025,
United States
| | - Shawn M. Perdue
- Department of Chemistry, University of California—Irvine, Irvine, California 92697-2025,
United States
| | - Alejandro Rodriguez Perez
- Department of Chemistry, University of California—Irvine, Irvine, California 92697-2025,
United States
| | - Patrick Z. El-Khoury
- Department of Chemistry, University of California—Irvine, Irvine, California 92697-2025,
United States
| | - Karoliina Honkala
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35,
FIN-40014 Jyväskylä, Finland
| | - V. A. Apkarian
- Department of Chemistry, University of California—Irvine, Irvine, California 92697-2025,
United States
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40
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Barmparis GD, Honkala K, Remediakis IN. Thiolate adsorption on Au(hkl) and equilibrium shape of large thiolate-covered gold nanoparticles. J Chem Phys 2013; 138:064702. [DOI: 10.1063/1.4790368] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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41
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42
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Andersin J, Nevalaita J, Honkala K, Häkkinen H. The Redox Chemistry of Gold with High-Valence Doped Calcium Oxide. Angew Chem Int Ed Engl 2012; 52:1424-7. [DOI: 10.1002/anie.201208443] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Indexed: 11/08/2022]
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43
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Andersin J, Parkkinen P, Honkala K. Pd-catalyzed hydrodehalogenation of chlorinated olefins: Theoretical insights to the reaction mechanism. J Catal 2012. [DOI: 10.1016/j.jcat.2012.03.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Andersin J, Honkala K. First principles investigations of Pd-on-Au nanostructures for trichloroethene catalytic removal from groundwater. Phys Chem Chem Phys 2011; 13:1386-94. [DOI: 10.1039/c0cp00524j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Frondelius P, Häkkinen H, Honkala K. Formation of Gold(I) Edge Oxide at Flat Gold Nanoclusters on an Ultrathin MgO Film under Ambient Conditions. Angew Chem Int Ed Engl 2010; 49:7913-6. [DOI: 10.1002/anie.201003851] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Frondelius P, Häkkinen H, Honkala K. Formation of Gold(I) Edge Oxide at Flat Gold Nanoclusters on an Ultrathin MgO Film under Ambient Conditions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003851] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Lin X, Nilius N, Freund HJ, Walter M, Frondelius P, Honkala K, Häkkinen H. Quantum well states in two-dimensional gold clusters on MgO thin films. Phys Rev Lett 2009; 102:206801. [PMID: 19519060 DOI: 10.1103/physrevlett.102.206801] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Indexed: 05/27/2023]
Abstract
The electronic structure of ultrasmall Au clusters on thin MgO/Ag(001) films has been analyzed by scanning tunneling spectroscopy and density functional theory. The clusters exhibit two-dimensional quantum well states, whose shapes resemble the eigenstates of a 2D electron gas confined in a parabolic potential. From the symmetry of the highest occupied (HOMO) and lowest unoccupied molecular orbital (LUMO) of a particular cluster, its electron filling and charge state is determined. In accordance with a Bader charge analysis, aggregates containing up to 20 atoms accumulate one to four extra electrons due to a charge transfer from the MgO/Ag interface. The HOMO-LUMO gap is found to close for clusters containing between 70 and 100 atoms.
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Affiliation(s)
- X Lin
- Fritz-Haber Institut der MPG, D14195 Berlin, Germany
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Walter M, Frondelius P, Honkala K, Häkkinen H. Electronic structure of MgO-supported Au clusters: quantum dots probed by scanning tunneling microscopy. Phys Rev Lett 2007; 99:096102. [PMID: 17931021 DOI: 10.1103/physrevlett.99.096102] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2007] [Indexed: 05/25/2023]
Abstract
We investigate via density functional theory (DFT) the appearance of small MgO-supported gold clusters with 8 to 20 atoms in a scanning tunneling microscope (STM) experiment. Comparison of simulations of ultrathin films on a metal support with a bulk MgO leads to similar results for the cluster properties relevant for STM. Simulated STM pictures show the delocalized states of the cluster rather than the atomic structure. This finding is due to the presence of s- derived delocalized states of the cluster near the Fermi energy. The properties of theses states can be understood from a jellium model for monovalent gold.
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Affiliation(s)
- Michael Walter
- Department of Physics, Nanoscience Center, P. O. Box 35, University of Jyväskylä, FIN-40014 Jyväskylä, Finland
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