1
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Vonk V, Volkov S, Keller TF, Hutterer A, Lakner P, Bertram F, Fleig J, Opitz AK, Stierle A. Reversible Ultrathin PtO x Formation at the Buried Pt/YSZ(111) Interface Studied In Situ under Electrochemical Polarization. J Phys Chem Lett 2023; 14:2065-2071. [PMID: 36798987 PMCID: PMC9986955 DOI: 10.1021/acs.jpclett.2c03614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Three different platinum oxides are observed by in situ X-ray diffraction during electrochemical potential cycles of platinum thin film model electrodes on yttria-stabilized zirconia (YSZ) at a temperature of 702 K in air. Scanning electron microscopy and atomic force microscopy performed before and after the in situ electrochemical X-ray experiments indicate that approximately 20% of the platinum electrode has locally delaminated from the substrate by forming pyramidlike blisters. The oxides and their locations are identified as (1) an ultrathin PtOx at the buried Pt/YSZ interface, which forms reversibly upon anodic polarization; (2) polycrystalline β-PtO2, which forms irreversibly upon anodic polarization on the inside of the blisters; and (3) an ultrathin α-PtO2 at the Pt/air interface, which forms by thermal oxidation and which does not depend on the electrochemical polarization. Thermodynamic and kinetic aspects are discussed to explain the coexistence of multiple phases at the same electrochemical conditions.
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Affiliation(s)
- Vedran Vonk
- Centre
for X-ray and Nanoscience CXNS, Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Sergey Volkov
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Thomas F. Keller
- Centre
for X-ray and Nanoscience CXNS, Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Physics
Department, University of Hamburg,, 20355 Hamburg, Germany
| | - Alexander Hutterer
- Institute
of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
| | - Pirmin Lakner
- Centre
for X-ray and Nanoscience CXNS, Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Florian Bertram
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Jürgen Fleig
- Institute
of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
| | - Alexander K. Opitz
- Institute
of Chemical Technologies and Analytics, Technische Universität Wien, 1060 Vienna, Austria
| | - Andreas Stierle
- Centre
for X-ray and Nanoscience CXNS, Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Physics
Department, University of Hamburg,, 20355 Hamburg, Germany
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2
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Xu J, Xie W, Han Y, Hu P. Atomistic Insights into the Oxidation of Flat and Stepped Platinum Surfaces Using Large-Scale Machine Learning Potential-Based Grand-Canonical Monte Carlo. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jiayan Xu
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, BelfastBT9 5AG, U.K
| | - Wenbo Xie
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, BelfastBT9 5AG, U.K
| | - Yulan Han
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, BelfastBT9 5AG, U.K
| | - P. Hu
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, BelfastBT9 5AG, U.K
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3
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Yohannes AG, Fink K, Kondov I. Pt nanoparticles under oxidizing conditions - implications of particle size, adsorption sites and oxygen coverage on stability. NANOSCALE ADVANCES 2022; 4:4554-4569. [PMID: 36341292 PMCID: PMC9595194 DOI: 10.1039/d2na00490a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Platinum nanoparticles are efficient catalysts for different reactions, such as oxidation of carbon and nitrogen monoxides. Adsorption and interaction of oxygen with the nanoparticle surface, taking place under reaction conditions, determine not only the catalytic efficiency but also the stability of the nanoparticles against oxidation. In this study, platinum nanoparticles in oxygen environment are investigated by systematic screening of initial nanoparticle-oxygen configurations and employing density functional theory and a thermodynamics-based approach. The structures formed at low oxygen coverages are described by adsorption of atomic oxygen on the nanoparticles whereas at high coverages oxide-like species are formed. The relative stability of adsorption configurations at different oxygen coverages, including the phase of fully oxidized nanoparticles, is investigated by constructing p-T phase diagrams for the studied systems.
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Affiliation(s)
- Asfaw G Yohannes
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Steinbuch Centre for Computing, Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Karin Fink
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Ivan Kondov
- Steinbuch Centre for Computing, Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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4
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Chang B, Wu S, Wang Y, Sun T, Cheng Z. Emerging single-atom iron catalysts for advanced catalytic systems. NANOSCALE HORIZONS 2022; 7:1340-1387. [PMID: 36097878 DOI: 10.1039/d2nh00362g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Due to the elusive structure-function relationship, traditional nanocatalysts always yield limited catalytic activity and selectivity, making them practically difficult to replace natural enzymes in wide industrial and biomedical applications. Accordingly, single-atom catalysts (SACs), defined as catalysts containing atomically dispersed active sites on a support material, strikingly show the highest atomic utilization and drastically boosted catalytic performances to functionally mimic or even outperform natural enzymes. The molecular characteristics of SACs (e.g., unique metal-support interactions and precisely located metal sites), especially single-atom iron catalysts (Fe-SACs) that have a similar catalytic structure to the catalytically active center of metalloprotease, enable the accurate identification of active centers in catalytic reactions, which afford ample opportunity for unraveling the structure-function relationship of Fe-SACs. In this review, we present an overview of the recent advances of support materials for anchoring an atomic dispersion of Fe. Subsequently, we highlight the structural designability of support materials as two sides of the same coin. Moreover, the applications described herein illustrate the utility of Fe-SACs in a broad scope of industrially and biologically important reactions. Finally, we present an outlook of the major challenges and opportunities remaining for the successful combination of single Fe atoms and catalysts.
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Affiliation(s)
- Baisong Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Shaolong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Yang Wang
- Department of Medical Technology, Suzhou Chien-shiung Institute of Technology, Taicang 215411, P. R. China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
| | - Zhen Cheng
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P. R. China.
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5
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Baskaran S, Jung J. Termolecular Eley–Rideal pathway for efficient
CO
oxidation on phosphorene‐supported single‐atom cobalt catalyst. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sambath Baskaran
- Department of Chemistry University of Ulsan Nam‐gu, Ulsan Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry University of Ulsan Nam‐gu, Ulsan Republic of Korea
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6
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García-Martínez F, Rämisch L, Ali K, Waluyo I, Bodero RC, Pfaff S, Villar-García IJ, Walter AL, Hunt A, Pérez-Dieste V, Zetterberg J, Lundgren E, Schiller F, Ortega JE. Structure Matters: Asymmetric CO Oxidation at Rh Steps with Different Atomic Packing. J Am Chem Soc 2022; 144:15363-15371. [PMID: 35960901 PMCID: PMC9413197 DOI: 10.1021/jacs.2c06733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Curved crystals are a simple but powerful approach to
bridge the
gap between single crystal surfaces and nanoparticle catalysts, by
allowing a rational assessment of the role of active step sites in
gas-surface reactions. Using a curved Rh(111) crystal, here, we investigate
the effect of A-type (square geometry) and B-type (triangular geometry)
atomic packing of steps on the catalytic CO oxidation on Rh at millibar
pressures. Imaging the crystal during reaction ignition with laser-induced
CO2 fluorescence demonstrates a two-step process, where
B-steps ignite at lower temperature than A-steps. Such fundamental
dissimilarity is explained in ambient pressure X-ray photoemission
(AP-XPS) experiments, which reveal partial CO desorption and oxygen
buildup only at B-steps. AP-XPS also proves that A-B step asymmetries
extend to the active stage: at A-steps, low-active O–Rh–O
trilayers buildup immediately after ignition, while highly active
chemisorbed O is the dominant species on B-type steps. We conclude
that B-steps are more efficient than A-steps for the CO oxidation.
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Affiliation(s)
| | - Lisa Rämisch
- Department of Physics, Lund University, Lund 221 000, Sweden
| | - Khadiza Ali
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rodrigo Castrillo Bodero
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - Sebastian Pfaff
- Department of Physics, Lund University, Lund 221 000, Sweden
| | - Ignacio J Villar-García
- NAPP Station, CIRCE Beamline, ALBA synchrotron, Carrer de la Llum 2-26, Cerdanyola del Vallès 08290, Spain
| | - Andrew Leigh Walter
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Virginia Pérez-Dieste
- NAPP Station, CIRCE Beamline, ALBA synchrotron, Carrer de la Llum 2-26, Cerdanyola del Vallès 08290, Spain
| | | | - Edvin Lundgren
- Department of Physics, Lund University, Lund 221 000, Sweden
| | - Frederik Schiller
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain
| | - J Enrique Ortega
- Departamento Física Aplicada, Universidad del País Vasco, San Sebastián 20018, Spain.,Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizábal 5, San Sebastián 20018, Spain.,Donostia International Physics Centre, Manuel Lardizábal 4, San Sebastián 20018, Spain
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7
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Ou Y, Li S, Wang F, Duan X, Yuan W, Yang H, Zhang Z, Wang Y. Reversible transformation between terrace and step sites of Pt nanoparticles on titanium under CO and O2 environments. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63958-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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8
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Peters B. Simple Model and Spectral Analysis for a Fluxional Catalyst: Intermediate Abundances, Pathway Fluxes, Rates, and Transients. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Baron Peters
- Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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9
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Lin L, Shi P, Yao L, Xie K, Tao H, Zhang Z, Wang Y. First-principles study on CO oxidation on CuO(111) surface prefers the Eley-Rideal or Langmuir-Hinshelwood pathway. NANOTECHNOLOGY 2022; 33:205504. [PMID: 35081528 DOI: 10.1088/1361-6528/ac4f19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Using the first-principles approach, we investigated the electronic and chemical properties of cupric oxide CuO (110) and CuO (111) and substantiated their catalytic activity toward CO oxidation. It is found that CuO (111) surface is more stable than the CuO (110) surface. We firstly study that adsorption of CO and O2on perfect, oxygen vacancies and Cu-anchored CuO (111) surface. It is found that adsorption of CO and O2molecules are chemical. Then we selected the most stable adsorption structure of CO/O2to investigated the CO oxidation mechanism on different surface, here we choose to study the Langmuir-Hinshelwood (LH) mechanism and Eley-Rideal (ER) mechanism. The results show that perfect and OvacancyCuO (111) surface is more inclined to LH mechanism, while the Cu-anchored CuO (111) surface is more inclined to ER mechanism. The results show that CuO catalyst is very effective for CO oxidation. Our work provides a deep understanding for the search of economical and reasonable CO oxidation catalysts.
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Affiliation(s)
- Long Lin
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
- School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo 454000, People's Republic of China
| | - Pei Shi
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Linwei Yao
- School of Information Science and Technology, Northwest University, Xi'an 710127, People's Republic of China
| | - Kun Xie
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Hualong Tao
- Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, People's Republic of China
| | - Zhanying Zhang
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Yanfang Wang
- School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo 454000, People's Republic of China
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10
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Abstract
Even after being in business for at least the last 100 years, research into the field of (heterogeneous) catalysis is still vibrant, both in academia and in industry. One of the reasons for this is that around 90% of all chemicals and materials used in everyday life are produced employing catalysis. In 2020, the global catalyst market size reached $35 billion, and it is still steadily increasing every year. Additionally, catalysts will be the driving force behind the transition toward sustainable energy. However, even after having been investigated for 100 years, we still have not reached the holy grail of developing catalysts from rational design instead of from trial-and-error. There are two main reasons for this, indicated by the two so-called "gaps" between (academic) research and actual catalysis. The first one is the "pressure gap", indicating the 13 orders of magnitude difference in pressure between the ultrahigh vacuum lab conditions and the atmospheric pressures (and higher) of industrial catalysis. The second one is the "materials gap", indicating the difference in complexity between single-crystal model catalysts of academic research and the real catalysts, consisting of metallic nanoparticles on supports, promoters, fillers, and binders. Although over the past decades significant efforts have been made in closing these gaps, many steps still have to be taken. In this Account, I will discuss the steps we have taken at Leiden University to further our fundamental understanding of heterogeneous catalysis at the (near-)atomic scale. I will focus on bridging the pressure gap, though we are also working on closing the materials gap. Over the past years, we developed state-of-the-art equipment that is able to investigate the (near-)atomic-scale structure of the catalyst surface during the chemical reaction using several surface-science-based techniques such as scanning tunneling microscopy, atomic force microscopy, optical microscopy, and X-ray-based techniques (surface X-ray diffraction, grazing-incidence small-angle X-ray scattering, and X-ray reflectivity, in collaboration with ESRF). Simultaneously with imaging the surface, we can investigate the catalyst's performance via mass spectrometry, enabling us to link changes in the catalyst structure to its activity, selectivity, or stability. Although we are currently investigating many industrially relevant catalytic systems, I will here focus the discussion on the oxidation of platinum during, for example, CO and NO oxidation, the NO reduction reaction on platinum, and the growth of graphene on liquid (molten) copper. I will show that to be able to obtain the full picture of heterogeneous catalysis, the ability to investigate the catalyst at the (near-)atomic scale during the chemical reaction is a must.
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Affiliation(s)
- Irene M. N. Groot
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands
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11
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Shavorskiy A, D’Acunto G, Boix de la Cruz V, Scardamaglia M, Zhu S, Temperton RH, Schnadt J, Knudsen J. Gas Pulse-X-Ray Probe Ambient Pressure Photoelectron Spectroscopy with Submillisecond Time Resolution. ACS APPLIED MATERIALS & INTERFACES 2021; 13:47629-47641. [PMID: 34590812 PMCID: PMC8517956 DOI: 10.1021/acsami.1c13590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
A setup capable of conducting gas pulse-X-ray probe ambient pressure photoelectron spectroscopy with high time resolution is presented. The setup makes use of a fast valve that creates gas pulses with an internal pressure in the mbar range and a rising edge of few hundreds of microseconds. A gated detector based on a fast camera is synchronized with the valve operation to measure X-ray photoemission spectra with up to 20 μs time resolution. The setup is characterized in several experiments in which the N2 gas is pulsed either into vacuum or a constant flow of another gas. The observed width of the pulse rising edge is 80 μs, and the maximum internal pulse pressure is ∼1 mbar. The CO oxidation reaction over Pt (111) was used to demonstrate the capability of the setup to correlate the gas phase composition with that of the surface during transient supply of CO gas into an O2 stream. Thus, formation of both chemisorbed and oxide oxygen species was observed prior to CO gas perturbation. Also, the data indicated that both the Langmuir-Hinshelwood and Mars-van-Krevelen mechanisms play an important role in the oxidation of carbon monoxide under ambient conditions.
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Affiliation(s)
| | - Giulio D’Acunto
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
| | | | | | - Suyun Zhu
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
| | | | - Joachim Schnadt
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
| | - Jan Knudsen
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
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12
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Linghu Y, Lu D, Wu C. CO oxidation over defective and nonmetal doped MoS 2monolayers. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:165002. [PMID: 33735845 DOI: 10.1088/1361-648x/abeff9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Defective (missing S atoms) and nonmetal (C- and N-) doped MoS2monolayers in the 2H and 1T' phases have been evaluated for catalyzing CO oxidation based on first-principles calculations. For the reaction 2CO + O2→ 2CO2, the oxidization of the first CO molecule is fairly easy and sometimes is even spontaneous, as the O2 molecule is highly activated or dissociates upon adsorption. However, for the defective (2H-), C-doped (1T'-), and N-doped (2H- and 1T'-) MoS2monolayers, the remaining O*adatom often refuses to react with other CO molecules and is hard to be removed (barrier > 1.20 eV). Only when over the C-doped 2H- and defective 1T'-MoS2monolayers, the removal of the second O*adatom requires to overcome moderate barriers (0.74 and 0.88 eV, respectively) by reacting with another CO molecule via the Eley-Rideal mechanism and the catalysts are recovered. The barriers can be further reduced by applying either tensile or compressive strain to the MoS2nanosheet. In contrast, the Langmuir-Hinshelwood mechanism is followed over the metal-containing MoS2nanosheets, as the bigger size of metal dopants allow the co-adsorption of CO and O2. Therefore, the C-doped 2H- and defective 1T'-MoS2monolayers are promising nonmetal-doped catalysts for CO oxidation.
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Affiliation(s)
- Yaoyao Linghu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, People's Republic of China
| | - Dongmei Lu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Chao Wu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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13
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Albinsson D, Bartling S, Nilsson S, Ström H, Fritzsche J, Langhammer C. Shedding Light on CO Oxidation Surface Chemistry on Single Pt Catalyst Nanoparticles Inside a Nanofluidic Model Pore. ACS Catal 2021; 11:2021-2033. [PMID: 33643681 PMCID: PMC7901062 DOI: 10.1021/acscatal.0c04955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/20/2021] [Indexed: 11/28/2022]
Abstract
Investigating a catalyst under relevant application conditions is experimentally challenging and parameters like reaction conditions in terms of temperature, pressure, and reactant mixing ratios, as well as catalyst design, may significantly impact the obtained experimental results. For Pt catalysts widely used for the oxidation of carbon monoxide, there is keen debate on the oxidation state of the surface at high temperatures and at/above atmospheric pressure, as well as on the most active surface state under these conditions. Here, we employ a nanoreactor in combination with single-particle plasmonic nanospectroscopy to investigate individual Pt catalyst nanoparticles localized inside a nanofluidic model pore during carbon monoxide oxidation at 2 bar in the 450-550 K temperature range. As a main finding, we demonstrate that our single-particle measurements effectively resolve a kinetic phase transition during the reaction and that each individual particle has a unique response. Based on spatially resolved measurements, we furthermore observe how reactant concentration gradients formed due to conversion inside the model pore give rise to position-dependent kinetic phase transitions of the individual particles. Finally, employing extensive electrodynamics simulations, we unravel the surface chemistry of the individual Pt nanoparticles as a function of reactant composition and find strongly temperature-dependent Pt-oxide formation and oxygen spillover to the SiO2 support as the main processes. These results therefore support the existence of a Pt surface oxide in the regime of high catalyst activity and demonstrate the possibility to use plasmonic nanospectroscopy in combination with nanofluidics as a tool for in situ studies of individual catalyst particles.
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Affiliation(s)
- David Albinsson
- Department
of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Stephan Bartling
- Department
of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Sara Nilsson
- Department
of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Henrik Ström
- Department
of Mechanics and Maritime Sciences, Chalmers
University of Technology, 412 96 Göteborg, Sweden
- Department
of Energy and Process Engineering, Norwegian
University of Science and Technology, 7491 Trondheim, Norway
| | - Joachim Fritzsche
- Department
of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Christoph Langhammer
- Department
of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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14
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Abstract
This is a Review of recent studies on surface structures of crystalline materials in the presence of gases in the mTorr to atmospheric pressure range, which brings surface science into a brand new direction. Surface structure is not only a property of the material but also depends on the environment surrounding it. This Review emphasizes that high/ambient pressure goes hand-in-hand with ambient temperature, because weakly interacting species can be densely covering surfaces at room temperature only when in equilibrium with a sufficiently high gas pressure. At the same time, ambient temperatures help overcome activation barriers that impede diffusion and reactions. Even species with weak binding energy can have residence lifetimes on the surface that allow them to trigger reconstructions of the atomic structure. The consequences of this are far from trivial because under ambient conditions the structure of the surface dynamically adapts to its environment and as a result completely new structures are often formed. This new era of surface science emerged and spread rapidly after the retooling of characterization techniques that happened in the last two decades. This Review is focused on the new surface structures enabled particularly by one of the new tools: high-pressure scanning tunneling microscopy. We will cover several important surfaces that have been intensely scrutinized, including transition metals, oxides, and alloys.
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Affiliation(s)
- Miquel Salmeron
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States.,Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Baran Eren
- Department of Chemical and Biological Physics, Weizmann Institute of Science, 234 Herzl Street, 76100 Rehovot, Israel
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15
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Han Y, Zhang H, Yu Y, Liu Z. In Situ Characterization of Catalysis and Electrocatalysis Using APXPS. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04251] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yong Han
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
| | - Hui Zhang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Yi Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
| | - Zhi Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
- Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
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16
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Wang H, Liu J, Guo J, Ou X, Wang X, Chen G. Novel joint catalytic properties of Fe and N co-doped graphene for CO oxidation. Phys Chem Chem Phys 2020; 22:28376-28382. [PMID: 33300905 DOI: 10.1039/d0cp05683a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using density functional theory, we have performed detailed calculations of the joint catalytic activity of graphene co-doped with Fe and N atoms. The Fe atom can be located on single vacancy graphene and acts as the active site. Due to the strong attraction of the Fe ion, the O-O bond length of the O2 molecule is elongated, which decreases the bonding energy between the O atoms. The energy barrier of CO oxidization is 0.84 eV. When N atoms are doped into the graphene, the interactions between the Fe ions and O2 molecules are stronger, and the O-O bond lengths are elongated further, which makes the desorption of the quasi-CO2 molecule easier. The energy barriers are reduced to 0.62 eV, 0.49 eV, and 0.33 eV for graphene doped with one, two and three N atoms, respectively. The O atom remaining on the Fe ion can form a CO2 molecule with an additional CO molecule. The produced CO2 molecule can be released with a small or even zero energy barrier by adsorbing an O2 molecule. The adsorbed O2 molecule is then involved in the next reaction process, and the material can be used as a recycled catalyst.
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Affiliation(s)
- Hongbo Wang
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China.
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17
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Garcia‐Martinez F, García‐Fernández C, Simonovis JP, Hunt A, Walter A, Waluyo I, Bertram F, Merte LR, Shipilin M, Pfaff S, Blomberg S, Zetterberg J, Gustafson J, Lundgren E, Sánchez‐Portal D, Schiller F, Ortega JE. Catalytic Oxidation of CO on a Curved Pt(111) Surface: Simultaneous Ignition at All Facets through a Transient CO‐O Complex**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fernando Garcia‐Martinez
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center Manuel Lardizabal 5 20018 San Sebastian Spain
| | - Carlos García‐Fernández
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center Manuel Lardizabal 5 20018 San Sebastian Spain
| | - Juan Pablo Simonovis
- National Synchrotron Light Source II Brookhaven National Laboratory Upton NY 11973 USA
| | - Adrian Hunt
- National Synchrotron Light Source II Brookhaven National Laboratory Upton NY 11973 USA
| | - Andrew Walter
- National Synchrotron Light Source II Brookhaven National Laboratory Upton NY 11973 USA
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II Brookhaven National Laboratory Upton NY 11973 USA
| | | | | | | | | | - Sara Blomberg
- Department of Chemical Engineering Lund University 221 000 Lund Sweden
| | | | | | - Edvin Lundgren
- Department of Physics Lund University 221 000 Lund Sweden
| | - Daniel Sánchez‐Portal
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center Manuel Lardizabal 5 20018 San Sebastian Spain
| | - Frederik Schiller
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center Manuel Lardizabal 5 20018 San Sebastian Spain
| | - J. Enrique Ortega
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center Manuel Lardizabal 5 20018 San Sebastian Spain
- Departamento Física Aplicada I Universidad del País Vasco 20018 San Sebastian Spain
- Donostia International Physics Centre Paseo Manuel de Lardizabal 4 20018 San Sebastian Spain
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18
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Garcia-Martinez F, García-Fernández C, Simonovis JP, Hunt A, Walter A, Waluyo I, Bertram F, Merte LR, Shipilin M, Pfaff S, Blomberg S, Zetterberg J, Gustafson J, Lundgren E, Sánchez-Portal D, Schiller F, Ortega JE. Catalytic Oxidation of CO on a Curved Pt(111) Surface: Simultaneous Ignition at All Facets through a Transient CO-O Complex*. Angew Chem Int Ed Engl 2020; 59:20037-20043. [PMID: 32701180 DOI: 10.1002/anie.202007195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/03/2020] [Indexed: 11/10/2022]
Abstract
The catalytic oxidation of CO on transition metals, such as Pt, is commonly viewed as a sharp transition from the CO-inhibited surface to the active metal, covered with O. However, we find that minor amounts of O are present in the CO-poisoned layer that explain why, surprisingly, CO desorbs at stepped and flat Pt crystal planes at once, regardless of the reaction conditions. Using near-ambient pressure X-ray photoemission and a curved Pt(111) crystal we probe the chemical composition at surfaces with variable step density during the CO oxidation reaction. Analysis of C and O core levels across the curved crystal reveals that, right before light-off, subsurface O builds up within (111) terraces. This is key to trigger the simultaneous ignition of the catalytic reaction at different Pt surfaces: a CO-Pt-O complex is formed that equals the CO chemisorption energy at terraces and steps, leading to the abrupt desorption of poisoning CO from all crystal facets at the same temperature.
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Affiliation(s)
- Fernando Garcia-Martinez
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center, Manuel Lardizabal 5, 20018, San Sebastian, Spain
| | - Carlos García-Fernández
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center, Manuel Lardizabal 5, 20018, San Sebastian, Spain
| | - Juan Pablo Simonovis
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Andrew Walter
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Florian Bertram
- Department of Physics, Lund University, 221 000, Lund, Sweden
| | - Lindsay R Merte
- Department of Physics, Lund University, 221 000, Lund, Sweden
| | | | - Sebastian Pfaff
- Department of Physics, Lund University, 221 000, Lund, Sweden
| | - Sara Blomberg
- Department of Chemical Engineering, Lund University, 221 000, Lund, Sweden
| | | | - Johan Gustafson
- Department of Physics, Lund University, 221 000, Lund, Sweden
| | - Edvin Lundgren
- Department of Physics, Lund University, 221 000, Lund, Sweden
| | - Daniel Sánchez-Portal
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center, Manuel Lardizabal 5, 20018, San Sebastian, Spain
| | - Frederik Schiller
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center, Manuel Lardizabal 5, 20018, San Sebastian, Spain
| | - J Enrique Ortega
- Centro de Física de Materiales CSIC/UPV-EHU-, Materials Physics Center, Manuel Lardizabal 5, 20018, San Sebastian, Spain.,Departamento Física Aplicada I, Universidad del País Vasco, 20018, San Sebastian, Spain.,Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018, San Sebastian, Spain
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19
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Kim TS, Kim J, Song HC, Kim D, Jeong B, Lee J, Shin JW, Ryoo R, Park JY. Catalytic Synergy on PtNi Bimetal Catalysts Driven by Interfacial Intermediate Structures. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02467] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taek-Seung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jeongjin Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hee Chan Song
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Daeho Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Beomgyun Jeong
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Jouhahn Lee
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Jae Won Shin
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Ryong Ryoo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
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20
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Hanselman S, McCrum IT, Rost MJ, Koper MTM. Thermodynamics of the formation of surface PtO 2 stripes on Pt(111) in the absence of subsurface oxygen. Phys Chem Chem Phys 2020; 22:10634-10640. [PMID: 31701114 DOI: 10.1039/c9cp05107d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper examines the thermodynamics of PtO2 stripes formed as intermediates of Pt(111) surface oxidation as a function of the degree of dilation parallel to the stripes, using density functional theory and atomistic thermodynamics. Internal energy calculations predict 7/8 and 8/9 stripe structures to dominate at standard temperature and pressure, which contain 7 or 8 elevated PtO2 units per 8 or 9 supporting surface Pt atoms, respectively. Moreover, we found a thermodynamic optimum with respect to mean in-stripe Pt-Pt spacing close to that of α-PtO2. Vibrational zero point energies, including bulk layer contributions, make a small but significant contribution to the stripe free energies, leading to the 6/7 stripe being most stable, although the 7/8 structure is still close in free energy. These findings correspond closely to experimental observations, providing insight into the driving force for oxide stripe formation and structure as the initial intermediate of platinum surface oxidation, and aiding our understanding of platinum catalysts and surface roughening under oxidative conditions.
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Affiliation(s)
- Selwyn Hanselman
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
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21
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Plodinec M, Nerl HC, Farra R, Willinger MG, Stotz E, Schlögl R, Lunkenbein T. Versatile Homebuilt Gas Feed and Analysis System for Operando TEM of Catalysts at Work. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2020; 26:220-228. [PMID: 32115001 DOI: 10.1017/s143192762000015x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Understanding how catalysts work during chemical reactions is crucial when developing efficient catalytic materials. The dynamic processes involved are extremely sensitive to changes in pressure, gas environment and temperature. Hence, there is a need for spatially resolved operando techniques to investigate catalysts under working conditions and over time. The use of dedicated operando techniques with added detection of catalytic conversion presents a unique opportunity to study the mechanisms underlying the catalytic reactions systematically. Herein, we report on the detailed setup and technical capabilities of a modular, homebuilt gas feed system directly coupled to a quadrupole mass spectrometer, which allows for operando transmission electron microscopy (TEM) studies of heterogeneous catalysts. The setup is compatible with conventional, commercially available gas cell TEM holders, making it widely accessible and reproducible by the community. In addition, the operando functionality of the setup was tested using CO oxidation over Pt nanoparticles.
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Affiliation(s)
- Milivoj Plodinec
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Hannah C Nerl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Ramzi Farra
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Marc G Willinger
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Eugen Stotz
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - Robert Schlögl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
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22
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Plodinec M, Nerl HC, Girgsdies F, Schlögl R, Lunkenbein T. Insights into Chemical Dynamics and Their Impact on the Reactivity of Pt Nanoparticles during CO Oxidation by Operando TEM. ACS Catal 2020. [DOI: 10.1021/acscatal.9b03692] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Milivoj Plodinec
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
| | - Hannah C. Nerl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
| | - Frank Girgsdies
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
| | - Robert Schlögl
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
- Max Planck Institute for Chemical Energy Conversion, 45470 Mülheim an der Ruhr, Germany
| | - Thomas Lunkenbein
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
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23
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Chen W, Tang Y, Zhao G, Teng D, Chai H, Dai X. Structural, electronic and catalytic performance of single-atom Fe anchored 3Si-doped graphene. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1580783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Weiguang Chen
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Yanan Tang
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Gao Zhao
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Da Teng
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Huadou Chai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang, People’s Republic of China
| | - Xianqi Dai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang, People’s Republic of China
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24
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Tang Y, Chen W, Zhang H, Wang Z, Teng D, Cui Y, Feng Z, Dai X. Single-atom metal-modified graphenylene as a high-activity catalyst for CO and NO oxidation. Phys Chem Chem Phys 2020; 22:16224-16235. [DOI: 10.1039/d0cp01062f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, the adsorption behaviors and interactions of different gas species on single-metal atom-anchored graphenylene (M–graphenylene, M = Mn, Co, Ni, and Cu) sheets were investigated by first-principles calculations.
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Affiliation(s)
- Yanan Tang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Weiguang Chen
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Hongwei Zhang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zhiwen Wang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Da Teng
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Yingqi Cui
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zhen Feng
- School of Physics
- Henan Normal University
- Xinxiang
- China
| | - Xianqi Dai
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
- School of Physics
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25
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Ferrari P, Libeert G, Tam NM, Janssens E. Interaction of carbon monoxide with doped metal clusters. CrystEngComm 2020. [DOI: 10.1039/d0ce00733a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Highlight of experimental and computational studies about the interaction of CO with transition and coinage metal clusters, particularly discussing the influence of dopant atoms.
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Affiliation(s)
- Piero Ferrari
- Quantum Solid-State Physics
- Department of Physics and Astronomy
- KU Leuven
- 3001 Leuven
- Belgium
| | - Guillaume Libeert
- Quantum Solid-State Physics
- Department of Physics and Astronomy
- KU Leuven
- 3001 Leuven
- Belgium
| | - Nguyen Minh Tam
- Computational Chemistry Research Group & Faculty of Applied Sciences
- Ton Duc Thang University
- Ho Chi Minh City
- Vietnam
| | - Ewald Janssens
- Quantum Solid-State Physics
- Department of Physics and Astronomy
- KU Leuven
- 3001 Leuven
- Belgium
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26
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Luo M, Liang Z, Chen M, Peera SG, Liu C, Yang H, Qi X, Liu J, Liang T. Catalytic oxidation mechanisms of carbon monoxide over single- and double-vacancy Mn-embedded graphene. NEW J CHEM 2020. [DOI: 10.1039/d0nj01500h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
CO oxidation on MnC3 and MnC4 has fast kinetics and a low energy barrier.
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Affiliation(s)
- Mingming Luo
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Zhao Liang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Mingwei Chen
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Shaik Gouse Peera
- Department of Environmental Science and Engineering
- Keimyung University
- Daegu 42601
- Republic of South Korea
| | - Chao Liu
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
- State Key Laboratory of Metastable Materials Science and Technology
- Yanshan University
| | - Hui Yang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Xiaopeng Qi
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Juan Liu
- Department of Mining and Materials Engineering
- McGill University
- Montreal
- Canada
| | - Tongxiang Liang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
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27
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Tang Y, Zhou J, Chen W, Chai H, Li Y, Feng Z, Dai X. Theoretical evaluation on single-atom Fe doped divacancy graphene for catalytic CO and NO oxidation by O2 molecules. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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28
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Tang Y, Chen W, Wu B, Zhao G, Liu Z, Li Y, Dai X. Formation Mechanism, Geometric Stability and Catalytic Activity of a Single Iron Atom Supported on N‐Doped Graphene. Chemphyschem 2019; 20:2506-2517. [DOI: 10.1002/cphc.201900666] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Yanan Tang
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Weiguang Chen
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Bingjie Wu
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Gao Zhao
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Zhiyong Liu
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
| | - Yi Li
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
| | - Xianqi Dai
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
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29
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Chen W, Zhao G, Wu B, Tang Y, Teng D, Dai X. Theoretical study on the catalytic properties of single-atom catalyst stabilised on silicon-doped graphene sheets. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1652368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Weiguang Chen
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Gao Zhao
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Bingjie Wu
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Yanan Tang
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Da Teng
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Xianqi Dai
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang Henan, People’s Republic of China
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30
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Cheng X, Wang Z, Mao Y, Hu P. Evidence of the O–Pd–O and Pd–O4 structure units as oxide seeds and their origin on Pd(211): revealing the mechanism of surface oxide formation. Phys Chem Chem Phys 2019; 21:6499-6505. [DOI: 10.1039/c8cp06224b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of surface oxides on metal surfaces is not only important in materials science, but also of significance in heterogeneous catalysis due to the fact that during most oxidation reactions the metal catalysts are inevitably oxidized, which may cause dramatic consequences in the reactions.
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Affiliation(s)
- Xiran Cheng
- School of Chemistry and Chemical Engineering
- The Queen's University Belfast
- UK
| | - Ziyun Wang
- School of Chemistry and Chemical Engineering
- The Queen's University Belfast
- UK
| | - Yu Mao
- School of Chemistry and Chemical Engineering
- The Queen's University Belfast
- UK
| | - P. Hu
- School of Chemistry and Chemical Engineering
- The Queen's University Belfast
- UK
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31
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Fernández S, Gao L, Hofmann JP, Carnis J, Labat S, Chahine GA, van Hoof AJF, Verhoeven MWGMT, Schülli TU, Hensen EJM, Thomas O, Richard MI. In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. NANOSCALE 2018; 11:331-338. [PMID: 30534681 DOI: 10.1039/c8nr08414a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The catalytic activity of metal nanoparticles can be altered by applying strain, which changes the crystalline lattice spacing and modifies the electronic properties of the metal. Understanding the role of elastic strain during catalytic reactions is thus crucial for catalyst design. Here, we show how single highly faceted Pt nanoparticles expand or contract upon interaction with different gas atmospheres using in situ nano-focused coherent X-ray diffraction imaging. We also demonstrate inter-particle heterogeneities, as they differ in development of strain under CO oxidation reaction conditions. The reported observations offer new insights into the design of catalysts exploiting strain effects.
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Affiliation(s)
- Sara Fernández
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France.
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32
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Schiller F, Ilyn M, Pérez-Dieste V, Escudero C, Huck-Iriart C, Ruiz del Arbol N, Hagman B, Merte LR, Bertram F, Shipilin M, Blomberg S, Gustafson J, Lundgren E, Ortega JE. Catalytic Oxidation of Carbon Monoxide on a Curved Pd Crystal: Spatial Variation of Active and Poisoning Phases in Stationary Conditions. J Am Chem Soc 2018; 140:16245-16252. [DOI: 10.1021/jacs.8b09428] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frederik Schiller
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018-San Sebastian, Spain
| | - Max Ilyn
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018-San Sebastian, Spain
- Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018-San Sebastian, Spain
| | - Virginia Pérez-Dieste
- ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Carlos Escudero
- ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Cristián Huck-Iriart
- ALBA Synchrotron Light Source, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín (UNSAM), Campus Miguelete, 25 de Mayo y Francia, 1650 San Martín, Provincia de Buenos Aires, Argentina
| | | | | | | | | | | | - Sara Blomberg
- Department of Physics, Lund University, Lund 221 00, Sweden
| | | | - Edvin Lundgren
- Department of Physics, Lund University, Lund 221 00, Sweden
| | - J. Enrique Ortega
- Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018-San Sebastian, Spain
- Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018-San Sebastian, Spain
- Departamento Física Aplicada I, Universidad del País Vasco, 20018-San Sebastian, Spain
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33
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Smirnov MY, Vovk EI, Nartova AV, Kalinkin AV, Bukhtiyarov VI. An XPS and STM Study of Oxidized Platinum Particles Formed by the Interaction between Pt/HOPG with NO2. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s0023158418050129] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Blomberg S, Zetterberg J, Gustafson J, Zhou J, Shipilin M, Pfaff S, Hejral U, Carlsson PA, Gutowski O, Bertram F, Lundgren E. Combining synchrotron light with laser technology in catalysis research. JOURNAL OF SYNCHROTRON RADIATION 2018; 25:1389-1394. [PMID: 30179177 PMCID: PMC6140392 DOI: 10.1107/s1600577518010597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/23/2018] [Indexed: 06/08/2023]
Abstract
High-energy surface X-ray diffraction (HESXRD) provides surface structural information with high temporal resolution, facilitating the understanding of the surface dynamics and structure of the active phase of catalytic surfaces. The surface structure detected during the reaction is sensitive to the composition of the gas phase close to the catalyst surface, and the catalytic activity of the sample itself may affect the surface structure, which in turn may complicate the assignment of the active phase. For this reason, planar laser-induced fluorescence (PLIF) and HESXRD have been combined during the oxidation of CO over a Pd(100) crystal. PLIF complements the structural studies with an instantaneous two-dimensional image of the CO2 gas phase in the vicinity of the active model catalyst. Here the combined HESXRD and PLIF operando measurements of CO oxidation over Pd(100) are presented, allowing for an improved assignment of the correlation between sample structure and the CO2 distribution above the sample surface with sub-second time resolution.
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Affiliation(s)
- Sara Blomberg
- Synchrotron Radiation Research, Lund University, Box 118, Lund 22100, Sweden
| | - Johan Zetterberg
- Combustion Physics, Lund University, Box 118, Lund 22100, Sweden
| | - Johan Gustafson
- Synchrotron Radiation Research, Lund University, Box 118, Lund 22100, Sweden
| | - Jianfeng Zhou
- Combustion Physics, Lund University, Box 118, Lund 22100, Sweden
| | - Mikhail Shipilin
- Synchrotron Radiation Research, Lund University, Box 118, Lund 22100, Sweden
| | - Sebastian Pfaff
- Combustion Physics, Lund University, Box 118, Lund 22100, Sweden
| | - Uta Hejral
- Synchrotron Radiation Research, Lund University, Box 118, Lund 22100, Sweden
| | - Per-Anders Carlsson
- Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg 41296, Sweden
| | - Olof Gutowski
- Photon Science, DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Florian Bertram
- Photon Science, DESY, Notkestrasse 85, Hamburg 22607, Germany
| | - Edvin Lundgren
- Synchrotron Radiation Research, Lund University, Box 118, Lund 22100, Sweden
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35
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Mehar V, Kim M, Shipilin M, Van den Bossche M, Gustafson J, Merte LR, Hejral U, Grönbeck H, Lundgren E, Asthagiri A, Weaver JF. Understanding the Intrinsic Surface Reactivity of Single-Layer and Multilayer PdO(101) on Pd(100). ACS Catal 2018. [DOI: 10.1021/acscatal.8b02191] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vikram Mehar
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Minkyu Kim
- William G. Lowrie Chemical & Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Mikhail Shipilin
- Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - Maxime Van den Bossche
- Department of Physics and Competence Centre for Catalysis, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Johan Gustafson
- Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - Lindsay R. Merte
- Materials Science and Applied Mathematics, Malmö University, SE-205 06 Malmö, Sweden
| | - Uta Hejral
- Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - Henrik Grönbeck
- Department of Physics and Competence Centre for Catalysis, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Edvin Lundgren
- Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - Aravind Asthagiri
- William G. Lowrie Chemical & Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jason F. Weaver
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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36
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Zhang H, Tang Y, Chai H, Chen W, Zhao M, Dai X. CO oxidation over BC3 nanosheet: a theoretical study. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1503748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Haiquan Zhang
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Yanan Tang
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Huadou Chai
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang Henan, People’s Republic of China
| | - Weiguang Chen
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Mingyu Zhao
- College of Physics and Materials Science, Henan Normal University, Xinxiang Henan, People’s Republic of China
| | - Xianqi Dai
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang Henan, People’s Republic of China
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37
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38
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Tang Y, Chai H, Zhang H, Chen W, Zhang W, Dai X. Tuning the adsorption and interaction of CO and O 2 on graphene-like BC 3-supported non-noble metal atoms. Phys Chem Chem Phys 2018; 20:14040-14052. [PMID: 29745399 DOI: 10.1039/c8cp00772a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Research into suitable substrate-supported single-atom catalysts has become a major challenge for electrochemical sensors and energy devices. Firstly, we investigate the adsorption properties of metal atoms (MA = Fe, Co, Ni, Cu and Al) on pristine and defective BC3 sheets through using first-principles calculations. It is found that the MA-doped BC3 configurations (MA-BC3) are quite stable at high temperature and the positively charged MAs as surface active sites can effectively regulate the stability of reactive gases. Secondly, the adsorption of individual O2 molecules is more stable than that of CO molecules, which can modify the electronic and magnetic properties of MA-BC3 systems. Moreover, the possible reaction processes of CO oxidation on the Fe-BC3 substrate are comparably analyzed through the Eley-Rideal (ER) and Langmuir-Hinshelwood (LH) mechanisms. In the LH mechanism, the coadsorbed O2 and CO as starting materials start to form an OOCO complex with a smaller energy barrier (0.38 eV), which is an energetically more favorable process than that of the OOCO (0.65 eV) or CO3 complex (0.42 eV) formed through ER mechanisms. This result indicates that the functionalized MA-BC3 sheets have low cost and high activity.
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Affiliation(s)
- Yanan Tang
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou 450044, China.
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39
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Gustafson J, Balmes O, Zhang C, Shipilin M, Schaefer A, Hagman B, Merte LR, Martin NM, Carlsson PA, Jankowski M, Crumlin EJ, Lundgren E. The Role of Oxides in Catalytic CO Oxidation over Rhodium and Palladium. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00498] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johan Gustafson
- Synchrotron Radiation Research, Lund University, Box 118, 221 00 Lund, Sweden
| | - Olivier Balmes
- MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
| | - Chu Zhang
- Synchrotron Radiation Research, Lund University, Box 118, 221 00 Lund, Sweden
| | - Mikhail Shipilin
- Department of Physics, AlbaNova University Center, Stockholm University, 10691 Stockholm, Sweden
| | - Andreas Schaefer
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Benjamin Hagman
- Synchrotron Radiation Research, Lund University, Box 118, 221 00 Lund, Sweden
| | - Lindsay R. Merte
- MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Natalia M. Martin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Per-Anders Carlsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Maciej Jankowski
- European Synchrotron Radiation Facility, CS40220, 38043 CEDEX 9 Grenoble, France
| | - Ethan J. Crumlin
- Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Edvin Lundgren
- Synchrotron Radiation Research, Lund University, Box 118, 221 00 Lund, Sweden
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40
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Liu JX, Su Y, Filot IAW, Hensen EJM. A Linear Scaling Relation for CO Oxidation on CeO 2-Supported Pd. J Am Chem Soc 2018; 140:4580-4587. [PMID: 29498273 PMCID: PMC5890314 DOI: 10.1021/jacs.7b13624] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Indexed: 11/28/2022]
Abstract
Resolving the structure and composition of supported nanoparticles under reaction conditions remains a challenge in heterogeneous catalysis. Advanced configurational sampling methods at the density functional theory level are used to identify stable structures of a Pd8 cluster on ceria (CeO2) in the absence and presence of O2. A Monte Carlo method in the Gibbs ensemble predicts Pd-oxide particles to be stable on CeO2 during CO oxidation. Computed potential energy diagrams for CO oxidation reaction cycles are used as input for microkinetics simulations. Pd-oxide exhibits a much higher CO oxidation activity than metallic Pd on CeO2. This work presents for the first time a scaling relation for a CeO2-supported metal nanoparticle catalyst in CO oxidation: a higher oxidation degree of the Pd cluster weakens CO binding and facilitates the rate-determining CO oxidation step with a ceria O atom. Our approach provides a new strategy to model supported nanoparticle catalysts.
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Affiliation(s)
- Jin-Xun Liu
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Yaqiong Su
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Ivo A. W. Filot
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Emiel J. M. Hensen
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
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41
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Hejral U, Franz D, Volkov S, Francoual S, Strempfer J, Stierle A. Identification of a Catalytically Highly Active Surface Phase for CO Oxidation over PtRh Nanoparticles under Operando Reaction Conditions. PHYSICAL REVIEW LETTERS 2018; 120:126101. [PMID: 29694082 DOI: 10.1103/physrevlett.120.126101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 05/20/2023]
Abstract
Pt-Rh alloy nanoparticles on oxide supports are widely employed in heterogeneous catalysis with applications ranging from automotive exhaust control to energy conversion. To improve catalyst performance, an atomic-scale correlation of the nanoparticle surface structure with its catalytic activity under industrially relevant operando conditions is essential. Here, we present x-ray diffraction data sensitive to the nanoparticle surface structure combined with in situ mass spectrometry during near ambient pressure CO oxidation. We identify the formation of ultrathin surface oxides by detecting x-ray diffraction signals from particular nanoparticle facets and correlate their evolution with the sample's enhanced catalytic activity. Our approach opens the door for an in-depth characterization of well-defined, oxide-supported nanoparticle based catalysts under operando conditions with unprecedented atomic-scale resolution.
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Affiliation(s)
- U Hejral
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, 20355 Hamburg, Germany
- Synchrotron Radiation Research, Lund University, 22100 Lund, Sweden
| | - D Franz
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, 20355 Hamburg, Germany
| | - S Volkov
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, 20355 Hamburg, Germany
| | - S Francoual
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
| | - J Strempfer
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
| | - A Stierle
- Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
- Fachbereich Physik, Universität Hamburg, 20355 Hamburg, Germany
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42
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Sun G, Sautet P. Metastable Structures in Cluster Catalysis from First-Principles: Structural Ensemble in Reaction Conditions and Metastability Triggered Reactivity. J Am Chem Soc 2018; 140:2812-2820. [PMID: 29424224 DOI: 10.1021/jacs.7b11239] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Reactivity studies on catalytic transition metal clusters are usually performed on a single global minimum structure. With the example of a Pt13 cluster under a pressure of hydrogen, we show from first-principle calculations that low energy metastable structures of the cluster can play a major role for catalytic reactivity and that hence consideration of the global minimum structure alone can severely underestimate the activity. The catalyst is fluxional with an ensemble of metastable structures energetically accessible at reaction conditions. A modified genetic algorithm is proposed to comprehensively search for the low energy metastable ensemble (LEME) structures instead of merely the global minimum structure. In order to reduce the computational cost of density functional calculations, a high dimensional neural network potential is employed to accelerate the exploration. The presence and influence of LEME structures during catalysis is discussed by the example of H covered Pt13 clusters for two reactions of major importance: hydrogen evolution reaction and methane activation. The results demonstrate that although the number of accessible metastable structures is reduced under reaction condition for Pt13 clusters, these metastable structures can exhibit high activity and dominate the observed activity due to their unique electronic or structural properties. This underlines the necessity of thoroughly exploring the LEME structures in catalysis simulations. The approach enables one to systematically address the impact of isomers in catalysis studies, taking into account the high adsorbate coverage induced by reaction conditions.
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Affiliation(s)
- Geng Sun
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States
| | - Philippe Sautet
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States.,Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095, United States
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43
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Tang Y, Zhou J, Zhang H, Chai H, Li Y, Dai X. Insights into the electronic properties and reactivity of graphene-like BC3 supported metal catalysts. NEW J CHEM 2018. [DOI: 10.1039/c8nj01272e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene-like BC3 monolayer is a new two-dimensional nanomaterial with many unique properties, but is still largely unknown.
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Affiliation(s)
- Yanan Tang
- Quantum Materials Research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Jincheng Zhou
- Quantum Materials Research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Hongwei Zhang
- Quantum Materials Research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Huadou Chai
- Quantum Materials Research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Yi Li
- College of Physics and Materials Science
- Henan Normal University
- Xinxiang
- China
| | - Xianqi Dai
- Quantum Materials Research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
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44
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Zhang Y, Liu Y, Meng Z, Ning C, Xiao C, Deng K, Jena P, Lu R. Confinement boosts CO oxidation on an Ni atom embedded inside boron nitride nanotubes. Phys Chem Chem Phys 2018; 20:17599-17605. [DOI: 10.1039/c8cp01957f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Because of the confinement effect, Ni embedded on the interior surface of BNNT exhibits a much higher catalytic activity for CO oxidation by comparing with that embedded in h-BN or on the outside surface of BNNT.
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Affiliation(s)
- Yadong Zhang
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Yuzhen Liu
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Zhaoshun Meng
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Cai Ning
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Chuanyun Xiao
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Kaiming Deng
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Purusottam Jena
- Department of Physics
- Virginia Commonwealth University
- Richmond
- USA
| | - Ruifeng Lu
- Department of Applied Physics
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
- State Key Lab of Molecular Reaction Dynamics
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45
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Tang Y, Chen W, Shen Z, Li C, Ma D, Dai X. A computational study of CO oxidation reactions on metal impurities in graphene divacancies. Phys Chem Chem Phys 2018; 20:2284-2295. [DOI: 10.1039/c7cp07397f] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on the density functional theory calculations, the formation geometry, electronic properties, and catalytic activity of metal impurities in divacancy graphene (M-DG, M = Mo, Fe, Co, and Ni) were systematically investigated.
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Affiliation(s)
- Yanan Tang
- Quantum materials research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Weiguang Chen
- Quantum materials research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zigang Shen
- Quantum materials research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Chenggang Li
- Quantum materials research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Dongwei Ma
- School of Physics
- Anyang Normal University
- Anyang
- China
| | - Xianqi Dai
- Quantum materials research Center
- College of Physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
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46
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Tang Y, Zhang M, Shen Z, Zhou J, Chai H, Dai X. Non-metal atom anchored BC3 sheet: a promising low-cost and high-activity catalyst for CO oxidation. NEW J CHEM 2018. [DOI: 10.1039/c7nj04877g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene-like BC3 monolayer as a new semiconducting nanomaterial has many unique properties.
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Affiliation(s)
- Yanan Tang
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Minghui Zhang
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zigang Shen
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Jincheng Zhou
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Huadou Chai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
- College of Physics and Electronic Engineering, Henan Normal University
- Xinxiang
| | - Xianqi Dai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University
- Zhengzhou 450044
- China
- College of Physics and Electronic Engineering, Henan Normal University
- Xinxiang
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47
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Yu Y, Koh YE, Lim H, Jeong B, Isegawa K, Kim D, Ueda K, Kondoh H, Mase K, Crumlin EJ, Ross PN, Gallet JJ, Bournel F, Mun BS. Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:464001. [PMID: 29057751 DOI: 10.1088/1361-648x/aa889e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The study of CO oxidation on Pt(1 1 0) surface is revisited using ambient pressure x-ray photoemission spectroscopy. When the surface temperature reaches the activation temperature for CO oxidation under elevated pressure conditions, both the α-phase of PtO2 oxide and chemisorbed oxygen are formed simultaneously on the surface. Due to the exothermic nature of CO oxidation, the temperature of the Pt surface increases as CO oxidation takes place. As the CO/O2 ratio increases, the production of CO2 increases continuously and the surface temperature also increases. Interestingly, within the diffusion limited regions, the amount of surface oxide changes little while the chemisorbed oxygen is reduced.
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Affiliation(s)
- Youngseok Yu
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
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48
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Luo L, Engelhard MH, Shao Y, Wang C. Revealing the Dynamics of Platinum Nanoparticle Catalysts on Carbon in Oxygen and Water Using Environmental TEM. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02861] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Langli Luo
- Environmental
Molecular Sciences Laboratory and ‡Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Mark H. Engelhard
- Environmental
Molecular Sciences Laboratory and ‡Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Yuyan Shao
- Environmental
Molecular Sciences Laboratory and ‡Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
| | - Chongmin Wang
- Environmental
Molecular Sciences Laboratory and ‡Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States
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49
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Observation of temperature-dependent kinetics for catalytic CO oxidation over TiO2-supported Pt catalysts. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.07.078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Weaver JF, Choi J, Mehar V, Wu C. Kinetic Coupling among Metal and Oxide Phases during CO Oxidation on Partially Reduced PdO(101): Influence of Gas-Phase Composition. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02570] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason F. Weaver
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Juhee Choi
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Vikram Mehar
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Chengjun Wu
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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