1
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Noordhoek K, Bartel CJ. Accelerating the prediction of inorganic surfaces with machine learning interatomic potentials. NANOSCALE 2024. [PMID: 38470833 DOI: 10.1039/d3nr06468a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
The surface properties of solid-state materials often dictate their functionality, especially for applications where nanoscale effects become important. The relevant surface(s) and their properties are determined, in large part, by the material's synthesis or operating conditions. These conditions dictate thermodynamic driving forces and kinetic rates responsible for yielding the observed surface structure and morphology. Computational surface science methods have long been applied to connect thermochemical conditions to surface phase stability, particularly in the heterogeneous catalysis and thin film growth communities. This review provides a brief introduction to first-principles approaches to compute surface phase diagrams before introducing emerging data-driven approaches. The remainder of the review focuses on the application of machine learning, predominantly in the form of learned interatomic potentials, to study complex surfaces. As machine learning algorithms and large datasets on which to train them become more commonplace in materials science, computational methods are poised to become even more predictive and powerful for modeling the complexities of inorganic surfaces at the nanoscale.
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Affiliation(s)
- Kyle Noordhoek
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA.
| | - Christopher J Bartel
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA.
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2
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Andryushechkin BV, Pavlova TV, Shevlyuga VM. New insights into the structure of the Ag(111)- p(4 × 4)-O phase: high-resolution STM and DFT study. Phys Chem Chem Phys 2024; 26:1322-1327. [PMID: 38108234 DOI: 10.1039/d3cp04962k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
The atomic structure of the Ag(111)-p(4 × 4)-O phase was reexamined with scanning tunneling microscopy (STM) and density functional theory. We discovered two different phases with the same (4 × 4) periodicity and demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images. Using bias dependencies of the STM images, we have shown that the p(4 × 4) phase is highly nonuniform, with local oxygen coverage varying from 1/8 ML up to 1/2 ML.
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Affiliation(s)
- B V Andryushechkin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, 119991 Moscow, Russia.
- HSE University, Myasnitskaya str. 20, 101000 Moscow, Russia
| | - T V Pavlova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, 119991 Moscow, Russia.
| | - V M Shevlyuga
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov str. 38, 119991 Moscow, Russia.
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3
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Zerbato E, Farris R, Fronzoni G, Neyman KM, Stener M, Bruix A. Effects of Oxygen Adsorption on the Optical Properties of Ag Nanoparticles. J Phys Chem A 2023; 127:10412-10424. [PMID: 38039331 PMCID: PMC10726366 DOI: 10.1021/acs.jpca.3c05801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 12/03/2023]
Abstract
Plasmonic metal nanoparticles are efficient light harvesters with a myriad of sensing- and energy-related applications. For such applications, the optical properties of nanoparticles of metals such as Cu, Ag, and Au can be tuned by controlling the composition, particle size, and shape, but less is known about the effects of oxidation on the plasmon resonances. In this work, we elucidate the effects of O adsorption on the optical properties of Ag particles by evaluating the thermodynamic properties of O-decorated Ag particles with calculations based on the density functional theory and subsequently computing the photoabsorption spectra with a computationally efficient time-dependent density functional theory approach. We identify stable Ag nanoparticle structures with oxidized edges and a quenching of the plasmonic character of the metal particles upon oxidation and trace back this effect to the sp orbitals (or bands) of Ag particles being involved both in the plasmonic excitation and in the hybridization to form bonds with the adsorbed O atoms. Our work has important implications for the understanding and application of plasmonic metal nanoparticles and plasmon-mediated processes under oxidizing environments.
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Affiliation(s)
- Elena Zerbato
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università
di Trieste, Via L. Giorgieri 1, Trieste 34127, Italy
| | - Riccardo Farris
- Departament
de Ciència del Materials i Química Física &
Institut de Química Teòrica i Computacional, Universitat de Barcelona, Barcelona 08028, Spain
| | - Giovanna Fronzoni
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università
di Trieste, Via L. Giorgieri 1, Trieste 34127, Italy
| | - Konstantin M. Neyman
- Departament
de Ciència del Materials i Química Física &
Institut de Química Teòrica i Computacional, Universitat de Barcelona, Barcelona 08028, Spain
- ICREA
(Institució Catalana de Recerca i Estudis Avançats), Barcelona 08010, Spain
| | - Mauro Stener
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università
di Trieste, Via L. Giorgieri 1, Trieste 34127, Italy
| | - Albert Bruix
- Departament
de Ciència del Materials i Química Física &
Institut de Química Teòrica i Computacional, Universitat de Barcelona, Barcelona 08028, Spain
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4
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Dorst AC, Dissanayake REA, Schauermann D, Knies S, Wodtke AM, Killelea DR, Schäfer T. Hyperthermal velocity distributions of recombinatively-desorbing oxygen from Ag(111). Front Chem 2023; 11:1248456. [PMID: 37601906 PMCID: PMC10433164 DOI: 10.3389/fchem.2023.1248456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 07/20/2023] [Indexed: 08/22/2023] Open
Abstract
This study presents velocity-resolved desorption experiments of recombinatively-desorbing oxygen from Ag (111). We combine molecular beam techniques, ion imaging, and temperature-programmed desorption to obtain translational energy distributions of desorbing O2. Molecular beams of NO2 are used to prepare a p (4 × 4)-O adlayer on the silver crystal. The translational energy distributions of O2 are shifted towards hyperthermal energies indicating desorption from an intermediate activated molecular chemisorption state.
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Affiliation(s)
- Arved C. Dorst
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
- Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Rasika E. A. Dissanayake
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
- Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Daniel Schauermann
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
| | - Sofie Knies
- Faculty of Biology, Chemistry and Geosciences and Bavarian Center for Battery Technology, Bayreuth, Germany
| | - Alec M. Wodtke
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
- Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Daniel R. Killelea
- Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, IL, United States
| | - Tim Schäfer
- Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany
- Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
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5
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Wen QX, Xu H, Nan Y, Xie Y, Cheng D. Design of CuCs-doped Ag-based catalyst for ethylene epoxidation. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2111246] [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]
Abstract
Our recent theoretical studies have screened out CuCs-doped Ag-based promising catalysts for ethylene epoxidation [ACS Catal. 11, 3371 (2021)]. The theoretical results were based on surface modeling, while in the actual reaction process Ag catalysts are particle shaped. In this work, we combine density functional theory (DFT), Wulff construction theory, and micro kinetic analysis to study the catalytic performance of Ag catalysts at the particle model. It demonstrates that the CuCs-doped Ag catalysts are superior to pure Ag catalysts in terms of selectivity and activity, which is further proved by experimental validation. The characterization analysis finds that both Cu and Cs dopant promote particle growth as well as particle dispersion, resulting in a grain boundary-rich Ag particle. Besides, CuCs also facilitate electrophilic atomic oxygen formation on catalyst surface, which is benefitial for ethylene oxide formation and desorption. Our work provides a case study for catalyst design by combining theory and experiment.
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Affiliation(s)
- Qi-xing Wen
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yang Nan
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, China
| | - Yuan Xie
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, China
| | - Daojian Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
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6
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Chen D, Shang C, Liu ZP. Automated search for optimal surface phases (ASOPs) in grand canonical ensemble powered by machine learning. J Chem Phys 2022; 156:094104. [DOI: 10.1063/5.0084545] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The surface of a material often undergoes dramatic structure evolution under a chemical environment, which, in turn, helps determine the different properties of the material. Here, we develop a general-purpose method for the automated search of optimal surface phases (ASOPs) in the grand canonical ensemble, which is facilitated by the stochastic surface walking (SSW) global optimization based on global neural network (G-NN) potential. The ASOP simulation starts by enumerating a series of composition grids, then utilizes SSW-NN to explore the configuration and composition spaces of surface phases, and relies on the Monte Carlo scheme to focus on energetically favorable compositions. The method is applied to silver surface oxide formation under the catalytic ethene epoxidation conditions. The known phases of surface oxides on Ag(111) are reproduced, and new phases on Ag(100) are revealed, which exhibit novel structure features that could be critical for understanding ethene epoxidation. Our results demonstrate that the ASOP method provides an automated and efficient way for probing complex surface structures that are beneficial for designing new functional materials under working conditions.
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Affiliation(s)
- Dongxiao Chen
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Cheng Shang
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Qi Zhi Institution, Shanghai 200030, China
| | - Zhi-Pan Liu
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Qi Zhi Institution, Shanghai 200030, China
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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7
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Computational and experimental insights into reactive forms of oxygen species on dynamic Ag surfaces under ethylene epoxidation conditions. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Tang Z, Chen T, Liu K, Du H, Podkolzin SG. Atomic, Molecular and Hybrid Oxygen Structures on Silver. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11603-11610. [PMID: 34565146 DOI: 10.1021/acs.langmuir.1c01941] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Interactions between oxygen and silver are important in many areas of science and technology, including materials science, medical, biomedical and environmental applications, spectroscopy, photonics, and physics. In the chemical industry, identification of oxygen structures on Ag catalysts is important in the development of environmentally friendly and sustainable technologies that utilize gas-phase oxygen as the oxidizing reagent without generating byproducts. Gas-phase oxygen adsorbs on Ag atomically by breaking the O-O bond and molecularly by preserving the O-O bond. Atomic O structures have Ag-O vibrations at 240-500 cm-1. Molecular O2 structures have O-O vibrations at significantly higher values of 870-1150 cm-1. In this work, we identify hybrid atomic-molecular oxygen structures, which form when one adsorbed O atom reacts with one lattice O atom on the surface or in the subsurface of Ag. Thus, these hybrid structures require dissociation of adsorbed molecular oxygen into O atoms but still possess the O-O bond. The hybrid structures have O-O vibrations at 600-810 cm-1, intermediate between the Ag-O vibrations of atomic oxygen and the O-O vibrations of molecular oxygen. The hybrid O-O structures do not form by a recombination of two adsorbed O atoms because one of the O atoms in the hybrid structure must be embedded into the Ag lattice. The hybrid oxygen structures are metastable and, therefore, serve as active species in selective oxidation reactions on Ag catalysts.
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Affiliation(s)
- Ziyu Tang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Tao Chen
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Kai Liu
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Henry Du
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Simon G Podkolzin
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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9
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Egle T, O'Connor CR, Friend CM. Regeneration of Active Surface Alloys during Cyclic Oxidation and Reduction: Oxidation of H 2 on Pd/Ag(111). J Phys Chem Lett 2021; 12:6752-6759. [PMID: 34264673 DOI: 10.1021/acs.jpclett.1c01367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The surface morphology and composition of a catalyst during excursions between oxidizing and reducing conditions can change substantially, especially in bimetallic alloys. Both thermodynamic and kinetic factors play a role in determining the properties of alloy surfaces where the active phase may be a metastable state. Previously, Ag oxide reduction was shown to be dramatically enhanced when Pd is on the surface; however, Pd is more stable when dissolved in Ag, raising the question as to whether a highly active Pd surface state will persist over multiple reaction cycles, a requirement for catalytic function. Experiments herein demonstrate that the enhanced chemical functionality due to the presence of Pd on the surface is retained, based on the enhanced rate of silver oxide reduction over multiple oxidation/reduction cycles for a Pd/Ag(111) model. Repeated oxidation and reduction promote PdAg alloying, and reversible structural and compositional changes are detected using X-ray photoelectron spectroscopy. This study establishes that metastable phases can persist in reactive processes on surfaces, indicating their potential in heterogeneous catalysis.
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10
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Chen D, Kang PL, Liu ZP. Active Site of Catalytic Ethene Epoxidation: Machine-Learning Global Pathway Sampling Rules Out the Metal Sites. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dongxiao Chen
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Pei-Lin Kang
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Zhi-Pan Liu
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200433, China
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11
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Xu H, Zhu L, Nan Y, Xie Y, Cheng D. Revisit the Role of Metal Dopants in Enhancing the Selectivity of Ag-Catalyzed Ethylene Epoxidation: Optimizing Oxophilicity of Reaction Site via Cocatalytic Mechanism. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04951] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haoxiang Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Lin Zhu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Yang Nan
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, Gansu, People’s Republic of China
| | - Yuan Xie
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, Gansu, People’s Republic of China
| | - Daojian Cheng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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12
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Mehar V, Almithn A, Egle T, Yu MH, O’Connor CR, Karatok M, Madix RJ, Hibbitts D, Weaver JF. Oxophilicity Drives Oxygen Transfer at a Palladium–Silver Interface for Increased CO Oxidation Activity. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03885] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vikram Mehar
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Abdulrahman Almithn
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemical Engineering, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Tobias Egle
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Ming-Hung Yu
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Christopher R. O’Connor
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Mustafa Karatok
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Robert J. Madix
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - David Hibbitts
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Jason F. Weaver
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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13
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Zhang H, Sun H, Shen K, Hu J, Hu J, Jiang Z, Song F. Recent Progress with In Situ Characterization of Interfacial Structures under a Solid-Gas Atmosphere by HP-STM and AP-XPS. MATERIALS 2019; 12:ma12223674. [PMID: 31703436 PMCID: PMC6888168 DOI: 10.3390/ma12223674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/24/2019] [Accepted: 10/25/2019] [Indexed: 11/16/2022]
Abstract
: Surface science is an interdisciplinary field involving various subjects such as physics, chemistry, materials, biology and so on, and it plays an increasingly momentous role in both fundamental research and industrial applications. Despite the encouraging progress in characterizing surface/interface nanostructures with atomic and orbital precision under ultra-high-vacuum (UHV) conditions, investigating in situ reactions/processes occurring at the surface/interface under operando conditions becomes a crucial challenge in the field of surface catalysis and surface electrochemistry. Promoted by such pressing demands, high-pressure scanning tunneling microscopy (HP-STM) and ambient pressure X-ray photoelectron spectroscopy (AP-XPS), for example, have been designed to conduct measurements under operando conditions on the basis of conventional scanning tunneling microscopy (STM) and photoemission spectroscopy, which are proving to become powerful techniques to study various heterogeneous catalytic reactions on the surface. This report reviews the development of HP-STM and AP-XPS facilities and the application of HP-STM and AP-XPS on fine investigations of heterogeneous catalytic reactions via evolutions of both surface morphology and electronic structures, including dehydrogenation, CO oxidation on metal-based substrates, and so on. In the end, a perspective is also given regarding the combination of in situ X-ray photoelectron spectroscopy (XPS) and STM towards the identification of the structure-performance relationship.
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Affiliation(s)
- Huan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Haoliang Sun
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Kongchao Shen
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Jinping Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Jinbang Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Zheng Jiang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Chinese Academy of Sciences, Shanghai 201204, China
| | - Fei Song
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; (H.Z.); (H.S.); (K.S.); (J.H.); (J.H.); (Z.J.)
- Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Chinese Academy of Sciences, Shanghai 201204, China
- Correspondence:
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14
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Pu T, Tian H, Ford ME, Rangarajan S, Wachs IE. Overview of Selective Oxidation of Ethylene to Ethylene Oxide by Ag Catalysts. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03443] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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Jørgensen MS, Mortensen HL, Meldgaard SA, Kolsbjerg EL, Jacobsen TL, Sørensen KH, Hammer B. Atomistic structure learning. J Chem Phys 2019. [DOI: 10.1063/1.5108871] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Mathias S. Jørgensen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Henrik L. Mortensen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Søren A. Meldgaard
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Esben L. Kolsbjerg
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Thomas L. Jacobsen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Knud H. Sørensen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Bjørk Hammer
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark
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16
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Dramatic differences in carbon dioxide adsorption and initial steps of reduction between silver and copper. Nat Commun 2019; 10:1875. [PMID: 31015453 PMCID: PMC6478877 DOI: 10.1038/s41467-019-09846-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 03/27/2019] [Indexed: 12/02/2022] Open
Abstract
Converting carbon dioxide (CO2) into liquid fuels and synthesis gas is a world-wide priority. But there is no experimental information on the initial atomic level events for CO2 electroreduction on the metal catalysts to provide the basis for developing improved catalysts. Here we combine ambient pressure X-ray photoelectron spectroscopy with quantum mechanics to examine the processes as Ag is exposed to CO2 both alone and in the presence of H2O at 298 K. We find that CO2 reacts with surface O on Ag to form a chemisorbed species (O = CO2δ−). Adding H2O and CO2 then leads to up to four water attaching on O = CO2δ− and two water attaching on chemisorbed (b-)CO2. On Ag we find a much more favorable mechanism involving the O = CO2δ− compared to that involving b-CO2 on Cu. Each metal surface modifies the gas-catalyst interactions, providing a basis for tuning CO2 adsorption behavior to facilitate selective product formations. The recycling of CO2 into storable chemicals is critical in order to mitigate climate change, although CO2’s inert nature has limited the reduction’s mechanistic considerations. Here, authors pair in-situ spectroscopy with quantum mechanics to elucidate CO2 adsorption on copper and silver surfaces.
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17
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Andryushechkin BV, Shevlyuga VM, Pavlova TV, Zhidomirov GM, Eltsov KN. Adsorption of molecular oxygen on the Ag(111) surface: A combined temperature-programmed desorption and scanning tunneling microscopy study. J Chem Phys 2018; 148:244702. [PMID: 29960376 DOI: 10.1063/1.5037169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The adsorption of O2 on Ag(111) between 300 and 500 K has been studied with temperature-programmed desorption (TPD) and scanning tunneling microscopy (STM). At the first stage of adsorption, the disordered local oxide phase (commonly looking in STM as an array of black spots) is formed on the surface irrespective of the substrate temperature. The maximum concentration of black spots was found to be ≈0.11 ML, which corresponds to an oxygen coverage of ≈0.66 ML. Taking into account that the nucleation of the Ag(111)-p(4 × 4)-O phase starts after the saturation of the disordered phase, one can conclude that its coverage is at least not less than 0.66 ML. The analysis of STM and TPD data shows that the thermodesorption peak (m/e = 32) at 570 K is related exclusively to the decomposition of the p(4 × 4) phase, while the local oxide phase does not contribute to desorption.
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Affiliation(s)
- B V Andryushechkin
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia
| | - V M Shevlyuga
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia
| | - T V Pavlova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia
| | - G M Zhidomirov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia
| | - K N Eltsov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov St., 119991 Moscow, Russia
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18
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Jones TE, Wyrwich R, Böcklein S, Carbonio EA, Greiner MT, Klyushin AY, Moritz W, Locatelli A, Menteş TO, Niño MA, Knop-Gericke A, Schlögl R, Günther S, Wintterlin J, Piccinin S. The Selective Species in Ethylene Epoxidation on Silver. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00660] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Travis E. Jones
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Regina Wyrwich
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 Munich, Germany
| | - Sebastian Böcklein
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 Munich, Germany
| | - Emilia A. Carbonio
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, BESSY II, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Mark T. Greiner
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Alexander Yu. Klyushin
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, BESSY II, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Wolfgang Moritz
- Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Theresienstraße 41, 80333 Munich, Germany
| | - Andrea Locatelli
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Tefvik O. Menteş
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Miguel A. Niño
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Axel Knop-Gericke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Robert Schlögl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Inorganic Chemistry, Faradayweg 4-6, 14195 Berlin, Germany
| | - Sebastian Günther
- Chemie Department, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Joost Wintterlin
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 Munich, Germany
| | - Simone Piccinin
- CNR-IOM DEMOCRITOS, c/o SISSA, Via Bonomea 265, 34136 Trieste, Italy
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19
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Jacobsen TL, Jørgensen MS, Hammer B. On-the-Fly Machine Learning of Atomic Potential in Density Functional Theory Structure Optimization. PHYSICAL REVIEW LETTERS 2018; 120:026102. [PMID: 29376690 DOI: 10.1103/physrevlett.120.026102] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 11/03/2017] [Indexed: 06/07/2023]
Abstract
Machine learning (ML) is used to derive local stability information for density functional theory calculations of systems in relation to the recently discovered SnO_{2}(110)-(4×1) reconstruction. The ML model is trained on (structure, total energy) relations collected during global minimum energy search runs with an evolutionary algorithm (EA). While being built, the ML model is used to guide the EA, thereby speeding up the overall rate by which the EA succeeds. Inspection of the local atomic potentials emerging from the model further shows chemically intuitive patterns.
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Affiliation(s)
- T L Jacobsen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - M S Jørgensen
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - B Hammer
- Department of Physics and Astronomy, and Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
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20
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Isbill SB, Roy S, Keffer DJ. Structure of oxidised silver (1 1 1) and (1 1 0) surfaces. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2016.1268258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Sara B. Isbill
- Department of Chemistry, University of Tennessee, Knoxville, TN, USA
| | - Sharani Roy
- Department of Chemistry, University of Tennessee, Knoxville, TN, USA
| | - David J. Keffer
- Department of Materials Science & Engineering, University of Tennessee, Knoxville, TN, USA
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21
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Aljama H, Yoo JS, Nørskov JK, Abild-Pedersen F, Studt F. Methanol Partial Oxidation on Ag(1 1 1) from First Principles. ChemCatChem 2016. [DOI: 10.1002/cctc.201601053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hassan Aljama
- Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
| | - Jong Suk Yoo
- Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
| | - Jens K. Nørskov
- Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
- SUNCAT Center of Interface Science and Catalysis; SLAC National Accelerator Laboratory; 2575 Sand Hill Road Menlo Park CA 94025 USA
| | - Frank Abild-Pedersen
- SUNCAT Center of Interface Science and Catalysis; SLAC National Accelerator Laboratory; 2575 Sand Hill Road Menlo Park CA 94025 USA
| | - Felix Studt
- Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
- SUNCAT Center of Interface Science and Catalysis; SLAC National Accelerator Laboratory; 2575 Sand Hill Road Menlo Park CA 94025 USA
- Institute of Catalysis Research and Technology; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Institute for Chemical Technology and Polymer Chemistry; Karlsruhe Institute of Technology; Engesserstr. 18 76131 Karlsruhe Germany
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22
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Deimel PS, Bababrik RM, Wang B, Blowey PJ, Rochford LA, Thakur PK, Lee TL, Bocquet ML, Barth JV, Woodruff DP, Duncan DA, Allegretti F. Direct quantitative identification of the "surface trans-effect". Chem Sci 2016; 7:5647-5656. [PMID: 30034702 PMCID: PMC6022009 DOI: 10.1039/c6sc01677d] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/08/2016] [Indexed: 02/03/2023] Open
Abstract
The strong parallels between coordination chemistry and adsorption on metal surfaces, with molecules and ligands forming local bonds to individual atoms within a metal surface, have been established over many years of study. The recently proposed "surface trans-effect" (STE) appears to be a further manifestation of this analogous behaviour, but so far the true nature of the modified molecule-metal surface bonding has been unclear. The STE could play an important role in determining the reactivities of surface-supported metal-organic complexes, influencing the design of systems for future applications. However, the current understanding of this effect is incomplete and lacks reliable structural parameters with which to benchmark theoretical calculations. Using X-ray standing waves, we demonstrate that ligation of ammonia and water to iron phthalocyanine (FePc) on Ag(111) increases the adsorption height of the central Fe atom; dispersion corrected density functional theory calculations accurately model this structural effect. The calculated charge redistribution in the FePc/H2O electronic structure induced by adsorption shows an accumulation of charge along the σ-bonding direction between the surface, the Fe atom and the water molecule, similar to the redistribution caused by ammonia. This apparent σ-donor nature of the observed STE on Ag(111) is shown to involve bonding to the delocalised metal surface electrons rather than local bonding to one or more surface atoms, thus indicating that this is a true surface trans-effect.
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Affiliation(s)
- Peter S Deimel
- Physics Department E20 , Technical University of Munich , 85748 Garching , Germany .
| | - Reda M Bababrik
- Center for Interfacial Reaction Engineering , School of Chemical, Biological and Materials Engineering , The University of Oklahoma , Norman , 73019-1004 Oklahoma , USA
| | - Bin Wang
- Center for Interfacial Reaction Engineering , School of Chemical, Biological and Materials Engineering , The University of Oklahoma , Norman , 73019-1004 Oklahoma , USA
| | - Phil J Blowey
- Diamond Light Source , Harwell Science and Innovation Campus , Didcot , OX11 0QX , UK .
- Department of Physics , University of Warwick , Coventry , CV4 7AL , UK
| | - Luke A Rochford
- Department of Chemistry , University of Warwick , Coventry , CV4 7AL , UK
| | - Pardeep K Thakur
- Diamond Light Source , Harwell Science and Innovation Campus , Didcot , OX11 0QX , UK .
| | - Tien-Lin Lee
- Diamond Light Source , Harwell Science and Innovation Campus , Didcot , OX11 0QX , UK .
| | - Marie-Laure Bocquet
- ENS - Department of Chemistry , PSL Research University , CNRS UMR 8640 PASTEUR , 75005 Paris , France
| | - Johannes V Barth
- Physics Department E20 , Technical University of Munich , 85748 Garching , Germany .
| | - D Phil Woodruff
- Department of Physics , University of Warwick , Coventry , CV4 7AL , UK
| | - David A Duncan
- Physics Department E20 , Technical University of Munich , 85748 Garching , Germany .
- Diamond Light Source , Harwell Science and Innovation Campus , Didcot , OX11 0QX , UK .
| | - Francesco Allegretti
- Physics Department E20 , Technical University of Munich , 85748 Garching , Germany .
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23
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Andryushechkin BV, Shevlyuga VM, Pavlova TV, Zhidomirov GM, Eltsov KN. Adsorption of O_{2} on Ag(111): Evidence of Local Oxide Formation. PHYSICAL REVIEW LETTERS 2016; 117:056101. [PMID: 27517780 DOI: 10.1103/physrevlett.117.056101] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 06/06/2023]
Abstract
The atomic structure of the disordered phase formed by oxygen on Ag(111) at low coverage is determined by a combination of low-temperature scanning tunneling microscopy and density functional theory. We demonstrate that the previous assignment of the dark objects in STM to chemisorbed oxygen atoms is incorrect and incompatible with trefoil-like structures observed in atomic-resolution images in current work. In our model, each object is an oxidelike ring formed by six oxygen atoms around the vacancy in Ag(111).
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Affiliation(s)
- B V Andryushechkin
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - V M Shevlyuga
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - T V Pavlova
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
| | - G M Zhidomirov
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
- G.K.Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospect Lavrentieva 5,630090 Novosibirsk, Russia
| | - K N Eltsov
- A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, ulitsa Vavilova 38, 119991 Moscow, Russia
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24
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Derouin J, Farber RG, Turano ME, Iski EV, Killelea DR. Thermally Selective Formation of Subsurface Oxygen in Ag(111) and Consequent Surface Structure. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01239] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jonathan Derouin
- Department of Chemistry & Biochemistry, Loyola University Chicago, 1068 W. Sheridan Rd., Chicago, Illinois 60660, United States
| | - Rachael G. Farber
- Department of Chemistry & Biochemistry, Loyola University Chicago, 1068 W. Sheridan Rd., Chicago, Illinois 60660, United States
| | - Marie E. Turano
- Department of Chemistry & Biochemistry, Loyola University Chicago, 1068 W. Sheridan Rd., Chicago, Illinois 60660, United States
| | - Erin V. Iski
- Department
of Chemistry and Biochemistry, The University of Tulsa, 800 S. Tucker
Dr., Tulsa, Oklahoma 74104, United States
| | - Daniel R. Killelea
- Department of Chemistry & Biochemistry, Loyola University Chicago, 1068 W. Sheridan Rd., Chicago, Illinois 60660, United States
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25
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26
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27
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Ab initio prediction of the equilibrium shape of supported Ag nanoparticles on α-Al 2 O 3 (0 0 0 1). J Catal 2015. [DOI: 10.1016/j.jcat.2014.10.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Jones TE, Rocha TCR, Knop-Gericke A, Stampfl C, Schlögl R, Piccinin S. Thermodynamic and spectroscopic properties of oxygen on silver under an oxygen atmosphere. Phys Chem Chem Phys 2015; 17:9288-312. [DOI: 10.1039/c5cp00342c] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Comparing experimental and theoretical XPS and XANES suggest that unreconstructed atomic oxygen is not present on the silver surface at oxygen chemical potentials relevant for epoxidation.
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Affiliation(s)
- Travis E. Jones
- CNR-IOM DEMOCRITOS
- c/o SISSA
- Trieste
- Italy
- Department of Inorganic Chemistry
| | - Tulio C. R. Rocha
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
| | - Axel Knop-Gericke
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
| | | | - Robert Schlögl
- Department of Inorganic Chemistry
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Berlin
- Germany
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29
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Xiao J, da Rosa AL, Zhang R, Teoh WY, Frauenheim T. Structural Evolution of Cu/ZnO Active Sites: From Reactive Environment to Ultrahigh Vacuum. ChemCatChem 2014. [DOI: 10.1002/cctc.201402215] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Viana ML, dos Reis DD, Soares EA, Van Hove MA, Moritz W, de Carvalho VE. Novel genetic algorithm search procedure for LEED surface structure determination. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:225005. [PMID: 24824047 DOI: 10.1088/0953-8984/26/22/225005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Low Energy Electron Diffraction (LEED) is one of the most powerful experimental techniques for surface structure analysis but until now only a trial-and-error approach has been successful. So far, fitting procedures developed to optimize structural and nonstructural parameters-by minimization of the R-factor-have had a fairly small convergence radius, suitable only for local optimization. However, the identification of the global minimum among the several local minima is essential for complex surface structures. Global optimization methods have been applied to LEED structure determination, but they still require starting from structures that are relatively close to the correct one, in order to find the final structure. For complex systems, the number of trial structures and the resulting computation time increase so rapidly that the task of finding the correct model becomes impractical using the present methodologies. In this work we propose a new search method, based on Genetic Algorithms, which is able to determine the correct structural model starting from completely random structures. This method-called here NGA-LEED for Novel Genetic Algorithm for LEED-utilizes bond lengths and symmetry criteria to select reasonable trial structures before performing LEED calculations. This allows a reduction of the parameter space and, consequently of the calculation time, by several orders of magnitude. A refinement of the parameters by least squares fit of simulated annealing is performed only at some intermediate stages and in the final step. The method was successfully tested for two systems, Ag(1 1 1)(4 × 4)-O and Au(1 1 0)-(1 × 2), both in theory versus theory and in theory versus experiment comparisons. Details of the implementation as well as the results for these two systems are presented.
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Affiliation(s)
- M L Viana
- Departamento de Ciências Exatas, Instituto Federal Minas Gerais-Campus Bambuí, Bambuí, Minas Gerais, Brazil
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31
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Desorption kinetics from a surface derived from direct imaging of the adsorbate layer. Nat Commun 2014; 5:3853. [DOI: 10.1038/ncomms4853] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 04/10/2014] [Indexed: 11/08/2022] Open
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32
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Molina LM, López MJ, Alonso JA. Ab initio studies of propene epoxidation on oxidized silver surfaces. Phys Chem Chem Phys 2014; 16:26546-52. [DOI: 10.1039/c4cp02103g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Pathways for propene oxide, acrolein and propanone formation on oxidized silver surfaces are studied using DFT simulations.
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Affiliation(s)
- L. M. Molina
- Departamento de Física Teórica
- Atómica y Óptica
- Universidad de Valladolid
- E-47011 Valladolid, Spain
| | - M. J. López
- Departamento de Física Teórica
- Atómica y Óptica
- Universidad de Valladolid
- E-47011 Valladolid, Spain
| | - J. A. Alonso
- Departamento de Física Teórica
- Atómica y Óptica
- Universidad de Valladolid
- E-47011 Valladolid, Spain
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33
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Fantauzzi D, Bandlow J, Sabo L, Mueller JE, van Duin ACT, Jacob T. Development of a ReaxFF potential for Pt–O systems describing the energetics and dynamics of Pt-oxide formation. Phys Chem Chem Phys 2014; 16:23118-33. [DOI: 10.1039/c4cp03111c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A ReaxFF force field description of Pt–O systems has been developed, validated and applied to oxygen diffusion on Pt(111).
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Affiliation(s)
| | - Jochen Bandlow
- Institut für Elektrochemie
- Universität Ulm
- D-89069 Ulm, Germany
| | - Lehel Sabo
- Institut für Elektrochemie
- Universität Ulm
- D-89069 Ulm, Germany
| | | | - Adri C. T. van Duin
- Department of Mechanical and Nuclear Engineering
- Pennsylvania State University
- University Park, USA
| | - Timo Jacob
- Institut für Elektrochemie
- Universität Ulm
- D-89069 Ulm, Germany
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34
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Jones TE, Rocha TCR, Knop-Gericke A, Stampfl C, Schlögl R, Piccinin S. Adsorbate induced vacancy formation on silver surfaces. Phys Chem Chem Phys 2014; 16:9002-14. [DOI: 10.1039/c4cp00778f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Günther S, Böcklein S, Wintterlin J, Niño MA, Menteş TO, Locatelli A. Locating Catalytically Active Oxygen on Ag(1 1 1)-A Spectromicroscopy Study. ChemCatChem 2013. [DOI: 10.1002/cctc.201300355] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Ishikawa A, Nakatsuji H. XPS of oxygen atoms on Ag(111) and Ag(110) surfaces: accurate study with SAC/SAC-CI combined with dipped adcluster model. J Comput Chem 2013; 34:1828-34. [PMID: 23677698 DOI: 10.1002/jcc.23324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/11/2013] [Accepted: 04/16/2013] [Indexed: 11/05/2022]
Abstract
O1s core-electron binding energies (CEBE) of the atomic oxygens on different Ag surfaces were investigated by the symmetry adapted cluster-configuration interaction (SAC-CI) method combined with the dipped adcluster model, in which the electron exchange between bulk metal and adsorbate is taken into account properly. Electrophilic and nucleophilic oxygens (O(elec) and O(nuc)) that might be important for olefin epoxidation in a low-oxygen coverage condition were focused here. We consider the O1s CEBE as a key property to distinguish the surface oxygen states, and series of calculation was carried out by the Hartree-Fock, Density functional theory, and SAC/SAC-CI methods. The experimental information and our SAC/SAC-CI results indicate that O(elec) is the atomic oxygen adsorbed on the fcc site of Ag(111) and that O(nuc) is the one on the reconstructed added-row site of Ag(110) and that one- and two-electron transfers occur, respectively, to the O(elec) and O(nuc) adclusters from the silver surface.
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Affiliation(s)
- Atsushi Ishikawa
- Quantum Chemistry Research Institute, Kyodai Katsura Venture Plaza 106, Goryo Oohara 1-36, Nishikyo-ku, Kyoto 615-8245, Japan
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37
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Böcklein S, Günther S, Wintterlin J. High-Pressure Scanning Tunneling Microscopy of a Silver Surface during Catalytic Formation of Ethylene Oxide. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201210209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Böcklein S, Günther S, Wintterlin J. High-Pressure Scanning Tunneling Microscopy of a Silver Surface during Catalytic Formation of Ethylene Oxide. Angew Chem Int Ed Engl 2013; 52:5518-21. [DOI: 10.1002/anie.201210209] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/25/2013] [Indexed: 11/09/2022]
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39
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Russell SM, Kim Y, Liu DJ, Evans JW, Thiel PA. Communication: Structure, formation, and equilibration of ensembles of Ag-S complexes on an Ag surface. J Chem Phys 2013; 138:071101. [DOI: 10.1063/1.4790571] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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40
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Özbek MO, Önal I, van Santen RA. Chlorine and Caesium Promotion of Silver Ethylene Epoxidation Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201200690] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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42
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Klacar S, Grönbeck H. H2dissociation over Ag/Al2O3: the first step in hydrogen assisted selective catalytic reduction of NOx. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20343j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Surnev S, Fortunelli A, Netzer FP. Structure-property relationship and chemical aspects of oxide-metal hybrid nanostructures. Chem Rev 2012; 113:4314-72. [PMID: 23237602 DOI: 10.1021/cr300307n] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Svetlozar Surnev
- Surface and Interface Physics, Institute of Physics, Karl-Franzens University, Graz A-8010 Graz, Austria
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44
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Ozbek MO, Onal I, van Santen RA. Effect of Surface and Oxygen Coverage on Ethylene Epoxidation. Top Catal 2012. [DOI: 10.1007/s11244-012-9870-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Rettew RE, Meyer A, Senanayake SD, Chen TL, Petersburg C, Ingo Flege J, Falta J, Alamgir FM. Interactions of oxygen and ethylene with submonolayer Ag films supported on Ni(111). Phys Chem Chem Phys 2011; 13:11034-44. [DOI: 10.1039/c1cp20357f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Surface Patterning of Silver using an Electron- or Photon-Assisted Oxidation Reaction. Chemphyschem 2010; 11:1525-32. [DOI: 10.1002/cphc.200900740] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Zhou L, Freyschlag CG, Xu B, Friend CM, Madix RJ. Direct selective oxygen-assisted acylation of amines driven by metallic silver surfaces: dimethylamine with formaldehyde. Chem Commun (Camb) 2009; 46:704-6. [PMID: 20087493 DOI: 10.1039/b921066k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Facile, direct acylation of dimethylamine with formaldehyde to N,N-dimethylformamide proceeds with a selectivity approaching 100% at low oxygen concentrations on metallic silver surfaces; the reaction proceeds via nucleophilic attack of adsorbed dimethylamide on formaldehyde with subsequent beta-H elimination from the adsorbed hemiaminal.
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Affiliation(s)
- Ling Zhou
- School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA
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48
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Pang XY, Xing B, Xue LQ, Wang GC. Selective oxidation of styrene on an oxygen-adsorbed Cu(111): a comparison with Au(111). J Comput Chem 2009; 31:1618-24. [PMID: 20017126 DOI: 10.1002/jcc.21445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The reaction mechanism for the styrene selective oxidation on the oxygen preadsorbed Cu(111) surface has been studied by the density functional theory calculation with the periodic slab model. The calculated result indicated that the process includes two steps: forming the oxametallacycle intermediate (OMMS) and then producing the products. In addition, it was found that the second step, from OMMS to the product, is the rate-controlling step, which is similar to the previous work of ethylene selective oxidation. The present result indicated that the selectivity towards the formation of styrene epoxide on Cu(111) is much higher than that on Au(111). More importantly, we found that the mechanism via the OMMS (2) (i.e., the preadsorbed atomic oxygen bound to the CH(2) group involved in C(6)H(5)-CH=CH(2)) to produce styrene epoxide is kinetically favored than that of OMMS (1). We also found that the selectivity toward the styrene epoxide formation on Cu(2)O is similar to that of Cu(111).
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Affiliation(s)
- Xian-Yong Pang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
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49
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Wu QH, Fortunelli A, Granozzi G. Preparation, characterisation and structure of Ti and Al ultrathin oxide films on metals. INT REV PHYS CHEM 2009. [DOI: 10.1080/01442350903172453] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Vajda S, Lee S, Sell K, Barke I, Kleibert A, von Oeynhausen V, Meiwes-Broer KH, Rodríguez AF, Elam JW, Pellin MM, Lee B, Seifert S, Winans RE. Combined temperature-programmed reaction and in situ x-ray scattering studies of size-selected silver clusters under realistic reaction conditions in the epoxidation of propene. J Chem Phys 2009; 131:121104. [DOI: 10.1063/1.3237158] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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