51
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Liu S, Li YW, Wang J, Jiao H. Reaction of CO, H2O, H2 and CO2 on the clean as well as O, OH and H precovered Fe(100) and Fe(111) surfaces. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02103d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The adsorption and activation of CO, H2O, CO2 and H2 on the clean as well as O, OH and H precovered Fe(100) surface at 0.25 ML coverage and Fe(111) surface at 0.33 ML coverage were computed (GGA-PBE) to investigate the catalytic activity of metallic iron.
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Affiliation(s)
- Shaoli Liu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Jianguo Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Haijun Jiao
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
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52
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Foppa L, Copéret C, Comas-Vives A. Increased Back-Bonding Explains Step-Edge Reactivity and Particle Size Effect for CO Activation on Ru Nanoparticles. J Am Chem Soc 2016; 138:16655-16668. [DOI: 10.1021/jacs.6b08697] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucas Foppa
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
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53
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Bu Y, Weststrate CJ, Niemantsverdriet JW, Fredriksson HOA. Role of ZnO and CeOx in Cu-Based Model Catalysts in Activation of H2O and CO2 Dynamics Studied by in Situ Ultraviolet–Visible and X-ray Photoelectron Spectroscopy. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02242] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yibin Bu
- Laboratory
for Physical Chemistry of Surfaces, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - C. J. Weststrate
- SynCat@DIFFER, Syngaschem BV, P.O. Box
6336, 5600 HH Eindhoven, The Netherlands
| | - J. W. Niemantsverdriet
- SynCat@DIFFER, Syngaschem BV, P.O. Box
6336, 5600 HH Eindhoven, The Netherlands
- SynCat@Beijing, Synfuels China Technology Company, Ltd., Huairou, People’s Republic of China
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54
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Kattel S, Yan B, Yang Y, Chen JG, Liu P. Optimizing Binding Energies of Key Intermediates for CO2 Hydrogenation to Methanol over Oxide-Supported Copper. J Am Chem Soc 2016; 138:12440-50. [DOI: 10.1021/jacs.6b05791] [Citation(s) in RCA: 386] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Shyam Kattel
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Binhang Yan
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department
of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yixiong Yang
- Chemistry
Department, Stony Brook University, Stony Brook, New York 11794, United States
| | - Jingguang G. Chen
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Ping Liu
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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55
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56
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Plata JJ, Graciani J, Evans J, Rodriguez JA, Sanz JF. Cu Deposited on CeOx-Modified TiO2(110): Synergistic Effects at the Metal–Oxide Interface and the Mechanism of the WGS Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00948] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jose J. Plata
- Departamento
de Química Física, Universidad de Sevilla, Sevilla 41012, Spain
| | - Jesús Graciani
- Departamento
de Química Física, Universidad de Sevilla, Sevilla 41012, Spain
| | - Jaime Evans
- Facultad
de Ciencias, Universidad Central de Venezuela, Caracas 1020-A, Venezuela
| | - José A. Rodriguez
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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57
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Effect of Re addition on the WGS activity and stability of Pt/CeO2–TiO2 catalyst for membrane reactor applications. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.11.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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58
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Zhou ZX, Wang L, Li ZY, He SG, Ma TM. Oxidation of SO2 to SO3 by Cerium Oxide Cluster Cations Ce2O4+ and Ce3O6+. J Phys Chem A 2016; 120:3843-8. [DOI: 10.1021/acs.jpca.6b00108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhen-Xun Zhou
- School
of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou, People’s Republic of China, 510640
| | - Li−Na Wang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou, People’s Republic of China, 510640
| | - Zi-Yu Li
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People’s Republic of China, 100190
| | - Sheng-Gui He
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People’s Republic of China, 100190
| | - Tong-Mei Ma
- School
of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou, People’s Republic of China, 510640
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59
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Montini T, Melchionna M, Monai M, Fornasiero P. Fundamentals and Catalytic Applications of CeO2-Based Materials. Chem Rev 2016; 116:5987-6041. [DOI: 10.1021/acs.chemrev.5b00603] [Citation(s) in RCA: 1484] [Impact Index Per Article: 185.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tiziano Montini
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Michele Melchionna
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Matteo Monai
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Paolo Fornasiero
- Department of Chemical and
Pharmaceutical Sciences, University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1, 34127 Trieste, Italy
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60
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Mudiyanselage K, Luo S, Kim HY, Yang X, Baber AE, Hoffmann FM, Senanayake S, Rodriguez JA, Chen JG, Liu P, Stacchiola DJ. How to stabilize highly active Cu+ cations in a mixed-oxide catalyst. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.08.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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61
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Liu SQ, Zhou SS, Chen ZG, Liu CB, Chen F, Wu ZY. An artificial photosynthesis system based on CeO2 as light harvester and N-doped graphene Cu(II) complex as artificial metalloenzyme for CO2 reduction to methanol fuel. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2015.10.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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62
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Zhang H, Wang W, Zhang B, Li H, Zhang Q. Controllable synthesis of spherical cerium oxide particles. RSC Adv 2016. [DOI: 10.1039/c6ra01680d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Formation mechanism CeO2 synthesized by a hydrothermal method.
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Affiliation(s)
- Hepeng Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710129
- China
| | - Wenbin Wang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710129
- China
| | - Baoliang Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710129
- China
| | - Huan Li
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710129
- China
| | - Qiuyu Zhang
- Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education
- School of Science
- Northwestern Polytechnical University
- Xi'an 710129
- China
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63
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Kinetic Monte Carlo simulations of the water gas shift reaction on Cu(1 1 1) from density functional theory based calculations. J Catal 2016. [DOI: 10.1016/j.jcat.2015.10.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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64
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Shi XY, Zhang W, Zhang C, Zheng WT, Chen H, Qi JG. Real-space observation of strong metal-support interaction: state-of-the-art and what's the next. J Microsc 2015; 262:203-15. [PMID: 26694903 DOI: 10.1111/jmi.12366] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/19/2015] [Indexed: 01/10/2023]
Abstract
The real-space resolving of the encapsulated overlayer in the well-known model and industry catalysts, ascribed to the advent of dedicated transmission electron microscopy, enables us to probe novel nano/micro architecture chemistry for better application, revisiting our understanding of this key issue in heterogeneous catalysis. In this review, we summarize the latest progress of real-space observation of SMSI in several well-known systems mainly covered from the metal catalysts (mostly Pt) supported by the TiO2 , CeO2 and Fe3 O4 . As a comparison with the model catalyst Pt/Fe3 O4 , the industrial catalyst Cu/ZnO is also listed, followed with the suggested ongoing directions in the field.
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Affiliation(s)
- X Y Shi
- Department of Materials Science, and Key Laboratory of Mobile Materials MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun, China
| | - W Zhang
- Department of Materials Science, and Key Laboratory of Mobile Materials MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun, China.,CICenergigune, Parque Tecnológico de Álava, Albert Einstein 48, ED. CIC, Miñano 01510, Álava, and Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - C Zhang
- Department of Materials Science, and Key Laboratory of Mobile Materials MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun, China
| | - W T Zheng
- Department of Materials Science, and Key Laboratory of Mobile Materials MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun, China
| | - H Chen
- Department of Control Science and Engineering, Jilin University, Changchun, China
| | - J G Qi
- School of Material Science and Engineering, Liaoning University of Technology, Jinzhou, China
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65
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Nguyen-Phan TD, Luo S, Vovchok D, Llorca J, Graciani J, Sanz JF, Sallis S, Xu W, Bai J, Piper LFJ, Polyansky DE, Fujita E, Senanayake SD, Stacchiola DJ, Rodriguez JA. Visible Light-Driven H2 Production over Highly Dispersed Ruthenia on Rutile TiO2 Nanorods. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02318] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | - Si Luo
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Dimitriy Vovchok
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Jordi Llorca
- Institute
of Energy Technologies and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain
| | - Jesús Graciani
- Department
of Physical Chemistry, University of Seville, E-41012, Seville, Spain
| | | | - Shawn Sallis
- Materials
Science and Engineering, Binghamton University, Binghamton, New York 13902, United States
| | - Wenqian Xu
- X-ray
Science
Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | | | - Louis F. J. Piper
- Materials
Science and Engineering, Binghamton University, Binghamton, New York 13902, United States
| | | | | | | | | | - José A. Rodriguez
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
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66
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Rodriguez JA, Liu P, Stacchiola DJ, Senanayake SD, White MG, Chen JG. Hydrogenation of CO2 to Methanol: Importance of Metal–Oxide and Metal–Carbide Interfaces in the Activation of CO2. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01755] [Citation(s) in RCA: 301] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José A. Rodriguez
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Dario J. Stacchiola
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Sanjaya D. Senanayake
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael G. White
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jingguang G. Chen
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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67
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Ganduglia-Pirovano MV. The non-innocent role of cerium oxide in heterogeneous catalysis: A theoretical perspective. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.01.049] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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68
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Carrasquillo-Flores R, Ro I, Kumbhalkar MD, Burt S, Carrero CA, Alba-Rubio AC, Miller JT, Hermans I, Huber GW, Dumesic JA. Reverse Water–Gas Shift on Interfacial Sites Formed by Deposition of Oxidized Molybdenum Moieties onto Gold Nanoparticles. J Am Chem Soc 2015. [DOI: 10.1021/jacs.5b05945] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ronald Carrasquillo-Flores
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Insoo Ro
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Mrunmayi D. Kumbhalkar
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Samuel Burt
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Carlos A. Carrero
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ana C. Alba-Rubio
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Jeffrey T. Miller
- Chemical
Science and Engineering, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Ive Hermans
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - George W. Huber
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - James A. Dumesic
- Department
of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
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69
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Yang X, Kattel S, Senanayake SD, Boscoboinik JA, Nie X, Graciani J, Rodriguez JA, Liu P, Stacchiola DJ, Chen JG. Low Pressure CO2 Hydrogenation to Methanol over Gold Nanoparticles Activated on a CeO(x)/TiO2 Interface. J Am Chem Soc 2015. [PMID: 26218072 DOI: 10.1021/jacs.5b06150] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Capture and recycling of CO2 into valuable chemicals such as alcohols could help mitigate its emissions into the atmosphere. Due to its inert nature, the activation of CO2 is a critical step in improving the overall reaction kinetics during its chemical conversion. Although pure gold is an inert noble metal and cannot catalyze hydrogenation reactions, it can be activated when deposited as nanoparticles on the appropriate oxide support. In this combined experimental and theoretical study, it is shown that an electronic polarization at the metal-oxide interface of Au nanoparticles anchored and stabilized on a CeO(x)/TiO2 substrate generates active centers for CO2 adsorption and its low pressure hydrogenation, leading to a higher selectivity toward methanol. This study illustrates the importance of localized electronic properties and structure in catalysis for achieving higher alcohol selectivity from CO2 hydrogenation.
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Affiliation(s)
- Xiaofang Yang
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Shyam Kattel
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Sanjaya D Senanayake
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | | | - Xiaowa Nie
- §Dalian University of Technology, Dalian 116024, Liaoning Province, China
| | - Jesús Graciani
- ∥Department of Physical Chemistry, University of Seville, E-41012 Seville, Spain
| | - José A Rodriguez
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Darío J Stacchiola
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jingguang G Chen
- †Chemistry Department and ‡Center for Functional Nanomaterials (CFN), Brookhaven National Laboratory, Upton, New York 11973, United States.,⊥Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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70
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Stacchiola DJ. Tuning the properties of copper-based catalysts based on molecular in situ studies of model systems. Acc Chem Res 2015; 48:2151-8. [PMID: 26103058 DOI: 10.1021/acs.accounts.5b00200] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Studying catalytic processes at the molecular level is extremely challenging, due to the structural and chemical complexity of the materials used as catalysts and the presence of reactants and products in the reactor's environment. The most common materials used on catalysts are transition metals and their oxides. The importance of multifunctional active sites at metal/oxide interfaces has been long recognized, but a molecular picture of them based on experimental observations is only recently emerging. The initial approach to interrogate the surface chemistry of catalysts at the molecular level consisted of studying metal single crystals as models for reactive metal centers, moving later to single crystal or well-defined thin film oxides. The natural next iteration consisted in the deposition of metal nanoparticles on well-defined oxide substrates. Metal nanoparticles contain undercoordinated sites, which are more reactive. It is also possible to create architectures where oxide nanoparticles are deposited on top of metal single crystals, denominated inverse catalysts, leading in this case to a high concentration of reactive cationic sites in direct contact with the underlying fully coordinated metal atoms. Using a second oxide as a support (host), a multifunctional configuration can be built in which both metal and oxide nanoparticles are located in close proximity. Our recent studies on copper-based catalysts are presented here as an example of the application of these complementary model systems, starting from the creation of undercoordinated sites on Cu(111) and Cu2O(111) surfaces, continuing with the formation of mixed-metal copper oxides, the synthesis of ceria nanoparticles on Cu(111) and the codeposition of Cu and ceria nanoparticles on TiO2(110). Catalysts have traditionally been characterized before or after reactions and analyzed based on static representations of surface structures. It is shown here how dynamic changes on a catalyst's chemical state and morphology can be followed during a reaction by a combination of in situ microscopy and spectroscopy. In addition to determining the active phase of a catalyst by in situ methods, the presence of weakly adsorbed surface species or intermediates generated only in the presence of reactants can be detected, allowing in turn the comparison of experimental results with first principle modeling of specific reaction mechanisms. Three reactions are used to exemplify the approach: CO oxidation (CO + 1/2O2 → CO2), water gas shift reaction (WGSR) (CO + H2O → CO2 + H2), and methanol synthesis (CO2 + 3H2 → CH3OH + H2O). During CO oxidation, the full conversion of Cu(0) to Cu(2+) deactivates an initially outstanding catalyst. This can be remedied by the formation of a TiCuOx mixed-oxide that protects the presence of active partially oxidized Cu(+) cations. It is also shown that for the WGSR a switch occurs in the reaction mechanism, going from a redox process on Cu(111) to a more efficient associative pathway at the interface of ceria nanoparticles deposited on Cu(111). Similarly, the activation of CO2 at the ceria/Cu(111) interface allows its facile hydrogenation to methanol. Our combined studies emphasize the need of searching for optimal metal/oxide interfaces, where multifunctional sites can lead to new efficient catalytic reaction pathways.
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Affiliation(s)
- Darío J. Stacchiola
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
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71
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Wang L, Long R, Prezhdo OV. Time-Domain Ab Initio Modeling of Photoinduced Dynamics at Nanoscale Interfaces. Annu Rev Phys Chem 2015; 66:549-79. [DOI: 10.1146/annurev-physchem-040214-121359] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Linjun Wang
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482;
- Department of Chemistry, University of Rochester, Rochester, New York 14627
| | - Run Long
- School of Physics and Complex & Adaptive Systems Laboratory, University College Dublin, Belfield, Dublin 4, Ireland
| | - Oleg V. Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482;
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72
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73
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74
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Mudiyanselage K, Xu F, Hoffmann FM, Hrbek J, Waluyo I, Boscoboinik JA, Stacchiola DJ. Adsorbate-driven morphological changes on Cu(111) nano-pits. Phys Chem Chem Phys 2015; 17:3032-8. [DOI: 10.1039/c4cp05088f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Healing of a metal surface by formation of a sub-surface hydride.
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Affiliation(s)
- K. Mudiyanselage
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
- Department of Science
| | - F. Xu
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
- Chemistry Department
| | | | - J. Hrbek
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
| | - I. Waluyo
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
| | - J. A. Boscoboinik
- Center for Functional Nanomaterials
- Brookhaven National Laboratory
- Upton
- USA
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75
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Tereshchuk P, Freire RLH, Ungureanu CG, Seminovski Y, Kiejna A, Da Silva JLF. The role of charge transfer in the oxidation state change of Ce atoms in the TM13–CeO2(111) systems (TM = Pd, Ag, Pt, Au): a DFT + U investigation. Phys Chem Chem Phys 2015; 17:13520-30. [DOI: 10.1039/c4cp06016d] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Despite extensive studies of transition-metal (TM) clusters supported on ceria, the role of TM atoms in the oxidation state change of Ce atoms is still unclear.
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Affiliation(s)
- Polina Tereshchuk
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | | | - Crina G. Ungureanu
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Yohanna Seminovski
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Adam Kiejna
- Institute of Experimental Physics
- University of Wrocław
- PL-50-204 Wrocław
- Poland
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76
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Graciani J, Yang F, Evans J, Vidal AB, Stacchiola D, Rodriguez JA, Sanz JF. When ruthenia met titania: achieving extraordinary catalytic activity at low temperature by nanostructuring of oxides. Phys Chem Chem Phys 2015; 17:26813-8. [DOI: 10.1039/c5cp04638f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanostructured ruthenia shows strongly modified properties compared to the pure oxide thereby becoming a low-temperature high-activity catalyst.
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Affiliation(s)
- J. Graciani
- Departamento de Química Física
- Universidad de Sevilla
- 41012-Sevilla
- Spain
| | - F. Yang
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
| | - J. Evans
- Facultad de Ciencias
- Universidad Central de Venezuela
- Caracas 1020-A
- Venezuela
| | - A. B. Vidal
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
- Centro de Química
| | - D. Stacchiola
- Chemistry Department
- Brookhaven National Laboratory
- Upton
- USA
| | | | - J. F. Sanz
- Departamento de Química Física
- Universidad de Sevilla
- 41012-Sevilla
- Spain
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77
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Graciani J, Mudiyanselage K, Xu F, Baber AE, Evans J, Senanayake SD, Stacchiola DJ, Liu P, Hrbek J, Sanz JF, Rodriguez JA. Highly active copper-ceria and copper-ceria-titania catalysts for methanol synthesis from CO2. Science 2014; 345:546-50. [DOI: 10.1126/science.1253057] [Citation(s) in RCA: 931] [Impact Index Per Article: 93.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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78
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Weissenrieder J, Gustafson J, Stacchiola D. Reactivity and Mass Transfer of Low-Dimensional Catalysts. CHEM REC 2014; 14:857-68. [DOI: 10.1002/tcr.201402006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 11/12/2022]
Affiliation(s)
| | - Johan Gustafson
- Division of Synchrotron Radiation Research; Lund University; 221 00 Lund Sweden
| | - Dario Stacchiola
- Chemistry Department; Brookhaven National Laboratory; Upton NY 11973 USA
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79
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Affiliation(s)
- Michael Dahl
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
| | - Yiding Liu
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
| | - Yadong Yin
- Department of Chemistry and ‡Materials Science and Engineering Program, University of California at Riverside, Riverside, California 92521, United States
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80
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Catalytic CO Oxidation Over Gold Nanoparticles: Support Modification by Monolayer- and Submonolayer-Dispersed Sb2O3. Catal Letters 2014. [DOI: 10.1007/s10562-014-1239-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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81
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Insight into the size effect on methanol decomposition over Cu-based catalysts based on density functional theory. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.01.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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82
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Xu T, Li C, Li H, Bai J, Qin H, Sun W, Huang Y. Synthesis and Characterization of Cu Nanoparticles Embedded in PAN/β-Cyclodextrin (β-CD) Composite Nanofiber Films. PARTICULATE SCIENCE AND TECHNOLOGY 2014. [DOI: 10.1080/02726351.2013.856976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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83
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Rodriguez JA, Senanayake SD, Stacchiola D, Liu P, Hrbek J. The activation of gold and the water-gas shift reaction: insights from studies with model catalysts. Acc Chem Res 2014; 47:773-82. [PMID: 24191672 DOI: 10.1021/ar400182c] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The activation of gold in catalytic reactions has been the subject of intensive research that has led to the transformation of one of the least chemically reactive elements to a catalyst with excellent activity and selectivity. Scientists have performed numerous systematic experimental and theoretical studies using model systems, which have explained the role of Au in chemical reactions with progressively increasing degrees of structural and chemical complexity. We present an overview of recent studies of model Au(111), CeOx/Au(111), and Au/CeOx/TiO2(110) surfaces that use Au in different structural configurations specifically for the water-gas shift reaction (WGS, CO + H2O → CO2 + H2), an important industrial process for the purification of CO. We demonstrate the significance of key structural components of the Au-based supported catalysts such as the metal-oxide interface (Au-Ox) toward the WGS catalytic activity, a "structure-activity" relationship. In the WGS reaction, Au(111) or Au nanoparticles have poor catalytic performance due to their inability to activate one of the most important steps of the reaction, the breaking of O-H bonds in the dissociation of water (H2O → OH + H). The relatively large energetic barrier can be overcome by using O on Au(111) to facilitate the formation of OH at low temperatures, with eventual CO2 and H2 production upon reaction between CO and the adsorbed OH. However, the inability to replace the reacted O prevents a sustainable catalytic process from occurring on Au(111). The addition of a small concentration of CeOx nanoparticles on top of the Au(111) surface facilitates this rate-determining step and easily continues the catalytic cycle in the production of H2. We have discovered that CeOx nanoparticles in contact with Au(111) are rich in Ce(3+). They also have a distinct metal-oxide interface, which sustains excellent activity for the WGS reaction via the formation of a unique carboxylate intermediate, making CeOx/Au(111) more active than Cu/ZnO(0001̅), Cu(100), and Cu(111) which are the typical catalysts for this reaction. Taking this knowledge one step further, bringing these components (oxide and metal nanoparticles) together over a second oxide in Au/CeOx/TiO2 produces a system with unique morphological and electronic properties. The result is a superior catalyst for the WGS reaction, both as a model system (Au/CeOx/TiO2(110)) and as powder material (Au/CeOx/TiO2(anatase)) optimized directly in a series of systematic investigations.
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Affiliation(s)
- José A. Rodriguez
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Sanjaya D. Senanayake
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Dario Stacchiola
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jan Hrbek
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
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84
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Ciftci A, Eren S, Ligthart DAJM, Hensen EJM. Platinum-Rhenium Synergy on Reducible Oxide Supports in Aqueous-Phase Glycerol Reforming. ChemCatChem 2014. [DOI: 10.1002/cctc.201301096] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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85
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Long R, Prezhdo OV. Instantaneous Generation of Charge-Separated State on TiO2 Surface Sensitized with Plasmonic Nanoparticles. J Am Chem Soc 2014; 136:4343-54. [DOI: 10.1021/ja5001592] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Run Long
- School of Physics and Complex & Adaptive Systems Laboratory, University College Dublin, Dublin, Ireland
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Oleg V Prezhdo
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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86
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Reina TR, Ivanova S, Delgado JJ, Ivanov I, Idakiev V, Tabakova T, Centeno MA, Odriozola JA. Viability of Au/CeO2-ZnO/Al2O3Catalysts for Pure Hydrogen Production by the Water-Gas Shift Reaction. ChemCatChem 2014. [DOI: 10.1002/cctc.201300992] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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87
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Torres D, Illas F, Liu P. Theoretical Study of Hydrogen Permeation through Mixed NiO–MgO Films Supported on Mo(100): Role of the Oxide–Metal Interface. J Phys Chem A 2014; 118:5756-61. [DOI: 10.1021/jp408872x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Torres
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Francesc Illas
- Departament de Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Ping Liu
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
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88
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Agnoli S, Reeder AE, Senanayake SD, Hrbek J, Rodriguez JA. Structure and special chemical reactivity of interface-stabilized cerium oxide nanolayers on TiO2(110). NANOSCALE 2014; 6:800-810. [PMID: 24257903 DOI: 10.1039/c3nr04623k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Novel interface-stabilized ceria nanophases have been grown on TiO2(110) by physical vapor deposition. At low coverage, dumbbell nanostructures constituted by reconstructed titania and ceria clusters are formed, while long range ordered nanoxides can be obtained by increasing the ceria dose. Scanning tunneling microscopy and photoemission spectroscopy were used to characterize the electronic properties of the films, showing that the TiO2 substrate can effectively stabilize ceria in reduced form over a wide range of experimental conditions. Epitaxial coupling is a very useful tool for tuning the chemical properties of mixed oxide systems. The special electronic properties of the films have a direct counterpart in the chemical activity, which has been investigated by temperature programmed desorption using methanol as a probe molecule. The experimental results indicate an exceptional activity of the ceria-titania interface in the selective dehydration of methanol to formaldehyde at an unprecedented low temperature (330 K).
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Affiliation(s)
- Stefano Agnoli
- Department of Chemical Sciences, University of Padova, Via F. Marzolo 1, 35131 Padova, Italy.
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89
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On the importance of metal–oxide interface sites for the water–gas shift reaction over Pt/CeO2 catalysts. J Catal 2014. [DOI: 10.1016/j.jcat.2013.10.012] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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90
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The effect of carbon monoxide Co-adsorption on Ni-catalysed water dissociation. Int J Mol Sci 2013; 14:23301-14. [PMID: 24287907 PMCID: PMC3876046 DOI: 10.3390/ijms141223301] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 11/12/2013] [Accepted: 11/15/2013] [Indexed: 01/03/2023] Open
Abstract
The effect of carbon monoxide (CO) co-adsorption on the dissociation of water on the Ni(111) surface has been studied using density functional theory. The structures of the adsorbed water molecule and of the transition state are changed by the presence of the CO molecule. The water O-H bond that is closest to the CO is lengthened compared to the structure in the absence of the CO, and the breaking O-H bond in the transition state structure has a larger imaginary frequency in the presence of CO. In addition, the distances between the Ni surface and H2O reactant and OH and H products decrease in the presence of the CO. The changes in structures and vibrational frequencies lead to a reaction energy that is 0.17 eV less exothermic in the presence of the CO, and an activation barrier that is 0.12 eV larger in the presence of the CO. At 463 K the water dissociation rate constant is an order of magnitude smaller in the presence of the CO. This reveals that far fewer water molecules will dissociate in the presence of CO under reaction conditions that are typical for the water-gas-shift reaction.
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91
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Nolan M. Modifying ceria (111) with a TiO2 nanocluster for enhanced reactivity. J Chem Phys 2013; 139:184710. [DOI: 10.1063/1.4829758] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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92
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Carrasquillo-Flores R, Gallo JMR, Hahn K, Dumesic JA, Mavrikakis M. Density Functional Theory and Reaction Kinetics Studies of the Water-Gas Shift Reaction on Pt-Re Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201300365] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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93
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Baber AE, Xu F, Dvorak F, Mudiyanselage K, Soldemo M, Weissenrieder J, Senanayake SD, Sadowski JT, Rodriguez JA, Matolín V, White MG, Stacchiola DJ. In Situ Imaging of Cu2O under Reducing Conditions: Formation of Metallic Fronts by Mass Transfer. J Am Chem Soc 2013; 135:16781-4. [DOI: 10.1021/ja408506y] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Fang Xu
- Stony Brook University, Stony
Brook, New York 11794, United States
| | - Filip Dvorak
- Faculty of Mathematics and Physics, Charles University, Department of Surface and Plasma Science, Prague, Czech Republic
| | | | - Markus Soldemo
- KTH Royal Institute of Technology, Material
Physics, Stockholm, Sweden
| | | | | | | | | | - Vladimír Matolín
- Faculty of Mathematics and Physics, Charles University, Department of Surface and Plasma Science, Prague, Czech Republic
| | - Michael G. White
- Stony Brook University, Stony
Brook, New York 11794, United States
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94
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Ammal SC, Heyden A. Origin of the unique activity of Pt/TiO2 catalysts for the water–gas shift reaction. J Catal 2013. [DOI: 10.1016/j.jcat.2013.06.014] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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95
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Li L, Chen X, Wu Y, Wang D, Peng Q, Zhou G, Li Y. Pd-Cu2O and Ag-Cu2O Hybrid Concave Nanomaterials for an Effective Synergistic Catalyst. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303912] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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96
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Li L, Chen X, Wu Y, Wang D, Peng Q, Zhou G, Li Y. Pd-Cu2O and Ag-Cu2O Hybrid Concave Nanomaterials for an Effective Synergistic Catalyst. Angew Chem Int Ed Engl 2013; 52:11049-53. [DOI: 10.1002/anie.201303912] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 07/03/2013] [Indexed: 11/12/2022]
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97
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Lee KH, Han SW, Kwon KY, Park JB. Systematic analysis of palladium–graphene nanocomposites and their catalytic applications in Sonogashira reaction. J Colloid Interface Sci 2013; 403:127-33. [DOI: 10.1016/j.jcis.2013.04.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 03/31/2013] [Accepted: 04/03/2013] [Indexed: 10/26/2022]
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98
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Wang YG, Yoon Y, Glezakou VA, Li J, Rousseau R. The role of reducible oxide-metal cluster charge transfer in catalytic processes: new insights on the catalytic mechanism of CO oxidation on Au/TiO2 from ab initio molecular dynamics. J Am Chem Soc 2013; 135:10673-83. [PMID: 23782230 DOI: 10.1021/ja402063v] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To probe metal particle/reducible oxide interactions density functional theory based ab initio molecular dynamics studies were performed on a prototypical metal cluster (Au20) supported on reducible oxides (rutile TiO2(110)) to implicitly account for finite temperature effects and the role of excess surface charge in the metal oxide. It is found that the charge state of the Au particle is negative in a reducing chemical environment whereas in the presence of oxidizing species coadsorbed to the oxide surface the cluster obtained a net positive charge. In the context of the well-known CO oxidation reaction, charge transfer facilitates the plasticization of Au20, which allows for a strong adsorbate induced surface reconstruction upon addition of CO leading to the formation of mobile Au-CO species on the surface. The charging/discharging of the cluster during the catalytic cycle of CO oxidation enhances and controls the amount of O2 adsorbed at oxide/cluster interface and strongly influences the energetics of all redox steps in catalytic conversions. A detailed comparison of the current findings with previous studies is presented, and generalities about the role of surface-adsorbate charge transfer for metal cluster/reducible oxide interactions are discussed.
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Affiliation(s)
- Yang-Gang Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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99
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Hussain A, Gracia J, Nieuwenhuys BE, Niemantsverdriet JWH. Explicit Roles of Au and TiO2in a Bifunctional Au/TiO2Catalyst for the Water-Gas Shift Reaction: A DFT Study. ChemCatChem 2013. [DOI: 10.1002/cctc.201300105] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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100
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Pang CL, Lindsay R, Thornton G. Structure of clean and adsorbate-covered single-crystal rutile TiO2 surfaces. Chem Rev 2013; 113:3887-948. [PMID: 23676004 DOI: 10.1021/cr300409r] [Citation(s) in RCA: 264] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Chi Lun Pang
- London Centre for Nanotechnology and Department of Chemistry, University College London, London WC1H 0AJ, United Kingdom
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