1
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Hu Y, Liu X, Zou Y, Xie H, Zhu T. Nature of support plays vital roles in H2O promoted CO oxidation over Pt catalysts. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Beck A, Rzepka P, Marshall KP, Stoian D, Willinger MG, van Bokhoven JA. Hydrogen Interaction with Oxide Supports in the Presence and Absence of Platinum. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:17589-17597. [PMID: 36304669 PMCID: PMC9589899 DOI: 10.1021/acs.jpcc.2c05478] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Oxides are essential catalysts and supports for noble metal catalysts. Their interaction with hydrogen enables, e.g., their use as a hydrogenation catalyst. Among the oxides considered reducible, substantial differences exist in their capability to activate hydrogen and how the oxide structure transforms due to this interaction. Noble metals, like platinum, generally enhance the oxide reduction by hydrogen spillover. This work presents a systematic temperature-programmed reduction study (300 to 873 K) of iron oxide, ceria, titania, zirconia, and alumina, with and without supported platinum. For all catalysts, platinum enhances the reducibility of the oxide. However, there are pronounced differences among all catalysts.
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Affiliation(s)
- Arik Beck
- Institute
for Chemistry and Bioengineering, ETH Zurich, 8093 Zürich, Switzerland
| | - Przemyslaw Rzepka
- Institute
for Chemistry and Bioengineering, ETH Zurich, 8093 Zürich, Switzerland
- Laboratory
for Catalysis and Sustainable Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Kenneth P. Marshall
- The
Swiss-Norwegian Beamlines (SNBL) at ESRF, BP 220, Grenoble 38043, France
| | - Dragos Stoian
- The
Swiss-Norwegian Beamlines (SNBL) at ESRF, BP 220, Grenoble 38043, France
| | - Marc G. Willinger
- TUM
Department of Chemistry, Technical University
of Munich, 85748 Garching, Germany
| | - Jeroen A. van Bokhoven
- Institute
for Chemistry and Bioengineering, ETH Zurich, 8093 Zürich, Switzerland
- Laboratory
for Catalysis and Sustainable Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
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3
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Zaera F. Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? Chem Rev 2022; 122:8594-8757. [PMID: 35240777 DOI: 10.1021/acs.chemrev.1c00905] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A critical review of different prominent nanotechnologies adapted to catalysis is provided, with focus on how they contribute to the improvement of selectivity in heterogeneous catalysis. Ways to modify catalytic sites range from the use of the reversible or irreversible adsorption of molecular modifiers to the immobilization or tethering of homogeneous catalysts and the development of well-defined catalytic sites on solid surfaces. The latter covers methods for the dispersion of single-atom sites within solid supports as well as the use of complex nanostructures, and it includes the post-modification of materials via processes such as silylation and atomic layer deposition. All these methodologies exhibit both advantages and limitations, but all offer new avenues for the design of catalysts for specific applications. Because of the high cost of most nanotechnologies and the fact that the resulting materials may exhibit limited thermal or chemical stability, they may be best aimed at improving the selective synthesis of high value-added chemicals, to be incorporated in organic synthesis schemes, but other applications are being explored as well to address problems in energy production, for instance, and to design greener chemical processes. The details of each of these approaches are discussed, and representative examples are provided. We conclude with some general remarks on the future of this field.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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4
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Shun K, Mori K, Masuda S, Hashimoto N, Hinuma Y, Kobayashi H, Yamashita H. Revealing hydrogen spillover pathways in reducible metal oxides. Chem Sci 2022; 13:8137-8147. [PMID: 35919430 PMCID: PMC9278487 DOI: 10.1039/d2sc00871h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 06/08/2022] [Indexed: 12/15/2022] Open
Abstract
Hydrogen spillover, the migration of dissociated hydrogen atoms from noble metals to their support materials, is a ubiquitous phenomenon and is widely utilized in heterogeneous catalysis and hydrogen storage materials. However, in-depth understanding of the migration of spilled hydrogen over different types of supports is still lacking. Herein, hydrogen spillover in typical reducible metal oxides, such as TiO2, CeO2, and WO3, was elucidated by combining systematic characterization methods involving various in situ techniques, kinetic analysis, and density functional theory calculations. TiO2 and CeO2 were proven to be promising platforms for the synthesis of non-equilibrium RuNi binary solid solution alloy nanoparticles displaying a synergistic promotional effect in the hydrolysis of ammonia borane. Such behaviour was driven by the simultaneous reduction of both metal cations under a H2 atmosphere over TiO2 and CeO2, in which hydrogen spillover favorably occurred over their surfaces rather than within their bulk phases. Conversely, hydrogen atoms were found to preferentially migrate within the bulk prior to the surface over WO3. Thus, the reductions of both metal cations occurred individually on WO3, which resulted in the formation of segregated NPs with no activity enhancement. The hydrogen spillover pathway in typical reducible metal oxides, such as TiO2, CeO2, and WO3, was investigated by combining various in situ characterization techniques, kinetic analysis, and density functional theory calculations.![]()
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Affiliation(s)
- Kazuki Shun
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Shinya Masuda
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naoki Hashimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoyo Hinuma
- Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Hisayoshi Kobayashi
- Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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5
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Mine S, Toyao T, Hinuma Y, Shimizu KI. Understanding and controlling the formation of surface anion vacancies for catalytic applications. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00014h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systematic computational efforts aimed at calculating surface anion vacancy formation energies as important descriptors of catalytic performance are summarized.
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Affiliation(s)
- Shinya Mine
- Institute for Catalysis, Hokkaido University, N-21, W-10, 1-5, Sapporo 001-0021, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, 1-5, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Nishigyo, Kyoto 615-8520, Japan
| | - Yoyo Hinuma
- Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda 563-8577, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, 1-5, Sapporo 001-0021, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Nishigyo, Kyoto 615-8520, Japan
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6
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Wang X, Brunson K, Xie H, Colliard I, Wasson MC, Gong X, Ma K, Wu Y, Son FA, Idrees KB, Zhang X, Notestein JM, Nyman M, Farha OK. Heterometallic Ce IV/ V V Oxo Clusters with Adjustable Catalytic Reactivities. J Am Chem Soc 2021; 143:21056-21065. [PMID: 34873904 DOI: 10.1021/jacs.1c11208] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Heterometallic CeIV/M oxo clusters are underexplored yet and can benefit from synergistic properties from combining cerium and other metal cations to produce efficient redox catalysts. Herein, we designed and synthesized a series of new Ce12V6 oxo clusters with different capping ligands: Ce12V6-SO4, Ce12V6-OTs (OTs: toluenesulfonic acid), and Ce12V6-NBSA (NBSA: nitrobenzenesulfonic acid). Single crystal X-ray diffraction (SCXRD) for all three structures reveals a Ce12V6 cubane core formulated [Ce12(VO)6O24]18+ with cerium on the edges of the cube, vanadyl capping the faces, and sulfate on the corners. While infrared spectroscopy (IR), ultraviolet-visible spectroscopy (UV-vis), electrospray ionization mass spectrometry (ESI-MS), and proton nuclear magnetic resonance (1H NMR) proved the successful coordination of the organic ligands to the Ce12V6 core, liquid phase 51V NMR and small-angle X-ray scattering (SAXS) confirmed the integrity of the clusters in the organic solutions. Furthermore, functionalization of the Ce12V6 core with organic ligands both provides increased solubility in term of homogeneous application and introduces porosity to the assemblies of Ce12V6-OTs and Ce12V6-NBSA in term of heterogeneous application, thus allowing more catalytic sites to be accessible and improving reactivity as compared to the nonporous and less soluble Ce12V6-SO4. Meanwhile, the coordinated ligands also influenced the electronic environment of the catalytic sites, in turn affecting the reactivity of the cluster, which we probed by the selective oxidation of 2-chloroethyl ethyl sulfide (CEES). This work provides a strategy to make full use of the catalytic sites within a class of inorganic sulfate capped clusters via organic ligand introduction.
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Affiliation(s)
- Xingjie Wang
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Kieran Brunson
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Haomiao Xie
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ian Colliard
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Megan C Wasson
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xinyi Gong
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Kaikai Ma
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yufang Wu
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Florencia A Son
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karam B Idrees
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xuan Zhang
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Justin M Notestein
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Omar K Farha
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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7
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Yang Y, Zhou L, Chen J, Qiu R, Yao Y. Low‐Temperature CO Oxidation over the Pt−TiN Interfacial Dual Sites. ChemCatChem 2021. [DOI: 10.1002/cctc.202101060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yifei Yang
- Institute of Materials China Academy of Engineering Physics Jiangyou 621700 P. R. China
| | - Linsen Zhou
- Institute of Materials China Academy of Engineering Physics Jiangyou 621700 P. R. China
| | - Jun Chen
- Institute of Materials China Academy of Engineering Physics Jiangyou 621700 P. R. China
| | - Ruizhi Qiu
- Institute of Materials China Academy of Engineering Physics Jiangyou 621700 P. R. China
| | - Yunxi Yao
- Institute of Materials China Academy of Engineering Physics Jiangyou 621700 P. R. China
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8
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Kim Y, Collinge G, Lee M, Khivantsev K, Cho SJ, Glezakou V, Rousseau R, Szanyi J, Kwak JH. Surface Density Dependent Catalytic Activity of Single Palladium Atoms Supported on Ceria**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yongseon Kim
- Department of Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Greg Collinge
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Mal‐Soon Lee
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Konstantin Khivantsev
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Sung June Cho
- Department of Chemical Engineering Chonnam National University 77 Yongbong-ro, Buk-gu Gwangju 61186 Republic of Korea
| | - Vassiliki‐Alexandra Glezakou
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Roger Rousseau
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Janos Szanyi
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Ja Hun Kwak
- Department of Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
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9
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Gu H, Liu X, Liu X, Ling C, Wei K, Zhan G, Guo Y, Zhang L. Adjacent single-atom irons boosting molecular oxygen activation on MnO 2. Nat Commun 2021; 12:5422. [PMID: 34521832 PMCID: PMC8440510 DOI: 10.1038/s41467-021-25726-w] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022] Open
Abstract
Efficient molecular oxygen activation is crucial for catalytic oxidation reaction, but highly depends on the construction of active sites. In this study, we demonstrate that dual adjacent Fe atoms anchored on MnO2 can assemble into a diatomic site, also called as MnO2-hosted Fe dimer, which activates molecular oxygen to form an active intermediate species Fe(O = O)Fe for highly efficient CO oxidation. These adjacent single-atom Fe sites exhibit a stronger O2 activation performance than the conventional surface oxygen vacancy activation sites. This work sheds light on molecular oxygen activation mechanisms of transition metal oxides and provides an efficient pathway to activate molecular oxygen by constructing new active sites through single atom technology.
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Affiliation(s)
- Huayu Gu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Xiao Liu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China.
| | - Xiufan Liu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Cancan Ling
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Kai Wei
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Guangming Zhan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Yanbing Guo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China.
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10
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Hussain I, Jalil AA, Hamid MYS, Hassan NS. Recent advances in catalytic systems in the prism of physicochemical properties to remediate toxic CO pollutants: A state-of-the-art review. CHEMOSPHERE 2021; 277:130285. [PMID: 33794437 DOI: 10.1016/j.chemosphere.2021.130285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Carbon monoxide (CO) is the most harmful pollutant in the air, causing environmental issues and adversely affecting humans and the vegetation and then raises global warming indirectly. CO oxidation is one of the most effective methods of reducing CO by converting it into carbon dioxide (CO2) using a suitable catalytic system, due to its simplicity and great value for pollution control. The CO oxidation reaction has been widely studied in various applications, including proton-exchange membrane fuel cell technology and catalytic converters. CO oxidation has also been of great academic interest over the last few decades as a model reaction. Many review studies have been produced on catalysts development for CO oxidation, emphasizing noble metal catalysts, the configuration of catalysts, process parameter influence, and the deactivation of catalysts. Nevertheless, there is still some gap in a state of the art knowledge devoted exclusively to synergistic interactions between catalytic activity and physicochemical properties. In an effort to fill this gap, this analysis updates and clarifies innovations for various latest developed catalytic CO oxidation systems with contemporary evaluation and the synergistic relationship between oxygen vacancies, strong metal-support interaction, particle size, metal dispersion, chemical composition acidity/basicity, reducibility, porosity, and surface area. This review study is useful for environmentalists, scientists, and experts working on mitigating the harmful effects of CO on both academic and commercial levels in the research and development sectors.
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Affiliation(s)
- I Hussain
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia.
| | - M Y S Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia
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11
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Kim Y, Collinge G, Lee MS, Khivantsev K, Cho SJ, Glezakou VA, Rousseau R, Szanyi J, Kwak JH. Surface Density Dependent Catalytic Activity of Single Palladium Atoms Supported on Ceria*. Angew Chem Int Ed Engl 2021; 60:22769-22775. [PMID: 34180114 DOI: 10.1002/anie.202105750] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/11/2021] [Indexed: 11/05/2022]
Abstract
The analogy between single-atom catalysts (SACs) and molecular catalysts predicts that the specific catalytic activity of these systems is constant. We provide evidence that this prediction is not necessarily true. As a case in point, we show that the specific activity over ceria-supported single Pd atoms linearly increases with metal atom density, originating from the cumulative enhancement of CeO2 reducibility. The long-range electrostatic footprints (≈1.5 nm) around each Pd site overlap with each other as surface Pd density increases, resulting in an observed deviation from constant specific activity. These cooperative effects exhaust previously active O atoms above a certain Pd density, leading to their permanent removal and a consequent drop in reaction rate. The findings of our combined experimental and computational study show that the specific catalytic activity of reducible oxide-supported single-atom catalysts can be tuned by varying the surface density of single metal atoms.
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Affiliation(s)
- Yongseon Kim
- Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Greg Collinge
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Mal-Soon Lee
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Konstantin Khivantsev
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Sung June Cho
- Department of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Vassiliki-Alexandra Glezakou
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Roger Rousseau
- Physical and Computational Sciences Directorate and Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Janos Szanyi
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Ja Hun Kwak
- Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
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12
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Influence of pretreatment conditions on low-temperature CO oxidation over Pd supported UiO-66 catalysts. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111633] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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13
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Hinuma Y, Mine S, Toyao T, Maeno Z, Shimizu KI. Surface activation by electron scavenger metal nanorod adsorption on TiH 2, TiC, TiN, and Ti 2O 3. Phys Chem Chem Phys 2021; 23:16577-16593. [PMID: 34320045 DOI: 10.1039/d1cp02068d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal/oxide support perimeter sites are known to provide unique properties because the nearby metal changes the local environment on the support surface. In particular, the electron scavenger effect reduces the energy necessary for surface anion desorption, and thereby contributes to activation of the (reverse) Mars-van Krevelen mechanism. This study investigated the possibility of such activation in hydrides, carbides, nitrides, and sulfides. The work functions (WFs) of known hydrides, carbides, nitrides, oxides, and sulfides with group 3, 4, or 5 cations (Sc, Y, La, Ti, Zr, Hf, V, Nb, and Ta) were calculated. The WFs of most hydrides, carbides, and nitrides are smaller than the WF of Ag, implying that the electron scavenger effect may occur when late transition metal nanoparticles are adsorbed on the surface. The WF of oxides and sulfides decreases when reduced. The surface anion vacancy formation energy correlates well with the bulk formation energy in carbides and nitrides, while almost no correlation is found in hydrides because of the small range of surface hydrogen vacancy formation energy values. The electron scavenger effect is explicitly observed in nanorods adsorbed on TiH2 and Ti2O3; the surface vacancy formation energy decreases at anion sites near the nanorod, and charge transfer to the nanorod happens when an anion is removed at such sites. Activation of hydrides, carbides, and nitrides by nanorod adsorption and screening support materials through WF calculation are expected to open up a new category of supported catalysts.
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Affiliation(s)
- Yoyo Hinuma
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan
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14
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Vainer BG. Infrared Thermography as a Powerful, Versatile, and Elegant Research Tool in Chemistry: Principles and Application to Catalysis and Adsorption. Chempluschem 2020; 85:1438-1454. [PMID: 32468712 DOI: 10.1002/cplu.202000202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/26/2020] [Indexed: 11/07/2022]
Abstract
In this Review, diverse chemical problems that have been approached by means of infrared thermography (IRT) are covered in depth. Moreover, some novel steps forward in this field are made, described and discussed. Namely, the latest-generation IRT performance capabilities are harnessed in full; the initial phase of catalytic CO oxidation (called "fast ignition") is presented at the 0.01 s temporal resolution; at the same resolution, the thermal manifestation of the adsorption-desorption wave propagation after the gaseous reactant pulsed (0.6 s) wetting is exhibited. Furthermore, a radical difference in the thermal behavior of differently calcined γ-Al2 O3 supported Au catalysts, which underwent successive H2 O and CO attacks, is demonstrated, and the generally accepted fact that the catalyst temperature reflects the catalytic activity is validated experimentally. It is shown that latest-generation IRT may serve as unique and highly informative research tool in chemistry.
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Affiliation(s)
- Boris G Vainer
- Novosibirsk State University, Physical Department, 2 Pirogova str., Novosibirsk, 630090, Russia.,Rzhanov Institute of Semiconductor Physics SB RAS, Physical Bases of Photoelectronics Department, 13 Lavrentyev av., Novosibirsk, 630090, Russia
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15
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Co-Supported CeO2Nanoparticles for CO Catalytic Oxidation: Effects of Different Synthesis Methods on Catalytic Performance. Catalysts 2020. [DOI: 10.3390/catal10020243] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrothermal and co-precipitation methods were studied as two different methods for the synthesis of CeO2nanocatalysts. Co/CeO2 catalysts supported by 2, 4, 6, or 8wt% Co were further synthesized through impregnation and the performance of the catalytic oxidation of CO has been investigated. The highest specific surface area and the best catalytic performance was obtained by the catalyst 4wt% Co/CeO2 with the CeO2 support synthesized by the hydrothermal method (4% Co/CeO2-h), which yielded 100% CO conversion at 130 °C. The formation of CeO2 nanoparticles was confirmed by TEM analysis. XRD and SEM-EDX mapping analyses indicated that CoOx is highly dispersed on the 4% Co/CeO2-h catalyst surface. H2-TPR and O2-TPD results showed that 4% Co/CeO2-h possesses the best redox properties and the highest amount of chemically adsorbed oxygen on its surface among all tested catalysts. Raman and XPS spectra showed strong interactions between highly dispersed Co2+ active sites and exposed Ce3+ on the surface of the CeO2 support, resulting in the formation of the strong redox cycle Ce4+ + Co2+↔ Ce3+ + Co3+.This may explain that 4% Co/CeO2-h exhibited the best catalytic activity among all tested catalysts.
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16
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Facile Sonochemical Preparation of Au-ZrO2 Nanocatalyst for the Catalytic Reduction of 4-Nitrophenol. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10020503] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
High-intensity ultrasonic waves have great potential for the green synthesis of various nanomaterials under mild conditions and offer an excellent alternative for hazardous chemical methods. Herein a facile approach for the eco-friendly synthesis of Au-ZrO2 nanocatalyst with a high catalytic activity using a facile ultrasonic method is presented. Gold (Au) in the nanosize regime was successfully deposited on the surface of solvothermally synthesized monodispersed ZrO2 nanoparticles (ZrO2 NPs) in a very short period of time (5 min) at room temperature. Spherical shape small size Au nanoparticles that are uniformly dispersed on the surface of ZrO2 nanoparticles were obtained. Notably, in the absence of ZrO2 nanoparticles, HAuCl4 could not be reduced, indicating that nano-sized ZrO2 not only acted as support but also helped to reduce the gold precursor at the surface. The as-prepared Au-ZrO2 nanocatalyst was characterized by various techniques. The Au-ZrO2 nanocatalyst served as a highly efficient reducing catalyst for the reduction of 4-nitrophenol. The reaction time decreased with increasing the amount of catalyst.
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17
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Pan Y, Shen X, Holly MA, Yao L, Wu D, Bentalib A, Yang J, Zeng J, Peng Z. Oscillation of Work Function during Reducible Metal Oxide Catalysis and Correlation with the Activity Property. ChemCatChem 2020. [DOI: 10.1002/cctc.201901457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanbo Pan
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Xiaochen Shen
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Michael A. Holly
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Libo Yao
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Dezhen Wu
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Abdulaziz Bentalib
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
| | - Jinlong Yang
- Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, and Department of Chemical Physics University of Science and Technology of China Hefei, Anhui 230026 China
| | - Jie Zeng
- Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, and Department of Chemical Physics University of Science and Technology of China Hefei, Anhui 230026 China
| | - Zhenmeng Peng
- Department of Chemical and Biomolecular Engineering The University of Akron Akron, Ohio 44325 USA
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18
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Lackner P, Zou Z, Mayr S, Diebold U, Schmid M. Using photoelectron spectroscopy to observe oxygen spillover to zirconia. Phys Chem Chem Phys 2019; 21:17613-17620. [PMID: 31386706 DOI: 10.1039/c9cp03322j] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
X-ray photoelectron spectroscopy (XPS) of five-monolayer-thick ZrO2 films reveals a core level binding energy difference of up to 1.8 eV between the tetragonal and monoclinic phase. This difference is explained by positively charged oxygen vacancies in the tetragonal films, which are slightly reduced. Due to the large band gap of zirconia (≈5-6 eV), these charges shift the electron levels, leading to higher binding energies of reduced tetragonal films w.r.t. fully oxidized monoclinic films. These core level shifts have the opposite direction than what is usually encountered for reduced transition metal oxides. The vacancies can be filled via oxygen spillover from a catalyst that enables O2 dissociation. This can be either a metal deposited on the film, or, if the film has holes, the metallic (in our case, Rh) substrate. Our study also confirms that tetragonal ZrO2 is stabilized via oxygen vacancies and shows that the XPS binding energy difference between O 1s and Zr 3d solely depends on the crystallographic phase.
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Affiliation(s)
- Peter Lackner
- Institute of Applied Physics, TU Wien, 1040 Vienna, Austria.
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19
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Lee I, Zaera F. Effect of metal nanoparticle size and titania crystallinity on the performance of Au/TiO2 catalysts for the promotion of carbon monoxide oxidation at cryogenic temperatures. J Chem Phys 2019. [DOI: 10.1063/1.5114928] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Ilkeun Lee
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, USA
| | - Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, USA
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20
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Liu P, Wu T, Madsen J, Schiøtz J, Wagner JB, Hansen TW. Transformations of supported gold nanoparticles observed by in situ electron microscopy. NANOSCALE 2019; 11:11885-11891. [PMID: 31184684 DOI: 10.1039/c9nr02731a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Oxide supported metal nanoparticles play an important role in heterogeneous catalysis. However, understanding the metal/oxide interface and their evolution under reaction conditions remains challenging. Herein, we investigate the interface between Au nanoparticles and a CeO2 substrate by environmental transmission electron microscopy with atomic resolution. We find that the Au nanoparticles have two preferential epitaxial relationships with the substrate, i.e. Type I (111)[-110]CeO2//(111)[-110]Au and Type II (111)[-110]CeO2//(111)[1-10]Au orientation relationships, where Type I is preferred. In situ observations in the presence of O2 show that the gas can stimulate the supported Au nanoparticles to transform between these two orientations even at room temperature. Moreover, when increasing the temperature to 973 K, the transformation of an Au nanoparticle between the two orientation states and a non-crystalline state in the presence of O2 is also observed. DFT calculations of the binding between Au and CeO2 in the two relationships are strongly influenced by the presence of oxygen vacancies. For a given position of a vacancy, there is a significant energy difference between the energy of the two types. However, for some positions, Type I is preferred, and for others, Type II, but the most favourable position of the vacancy for the two types has a very similar energy. This is consistent with the observation of both types of adhesion.
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Affiliation(s)
- Pei Liu
- DTU Nanolab, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark.
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21
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Zhang Y, Zhao Y, Otroshchenko T, Han S, Lund H, Rodemerck U, Linke D, Jiao H, Jiang G, Kondratenko EV. The effect of phase composition and crystallite size on activity and selectivity of ZrO2 in non-oxidative propane dehydrogenation. J Catal 2019. [DOI: 10.1016/j.jcat.2019.02.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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CO Oxidation Promoted by a Pt4/TiO2 Catalyst: Role of Lattice Oxygen at the Metal/Oxide Interface. Catal Letters 2018. [DOI: 10.1007/s10562-018-2610-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Schlexer P, Ruiz Puigdollers A, Pacchioni G. Role of Metal/Oxide Interfaces in Enhancing the Local Oxide Reducibility. Top Catal 2018. [DOI: 10.1007/s11244-018-1056-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Song L, Cao X, Li L. Engineering Stable Surface Oxygen Vacancies on ZrO 2 by Hydrogen-Etching Technology: An Efficient Support of Gold Catalysts for Water-Gas Shift Reaction. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31249-31259. [PMID: 30146867 DOI: 10.1021/acsami.8b07007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The surface structure of supports is crucial to fabricate efficient supported catalysts for water-gas shift (WGS). Here, hardly reducible ZrO2 was etched with hydrogen (H), aiming to modify surface structures with sufficient stable oxygen vacancies. After deposition of gold species, the obtained khaki ZrO2-H notably improved WGS catalytic activities and stabilities in comparison to the traditional white ZrO2. The characterization results and quantitative analysis indicate that sufficient surface oxygen vacancies of ZrO2-H support give rise to more metallic Au0 species and higher microstrain, which all boost WGS catalytic activities. Furthermore, optoelectronic properties were successfully used to correlate with their WGS thermocatalytic activities, and then a modified electron flow process was proposed to understand the WGS pathway. For one thing, the introduction of surface oxygen vacancies narrowed the band gap of ZrO2 and decreased the Ohmic barrier, which facilitated the flow of "hot-electron". For another thing, the conduction band electrons can be easily trapped by oxygen vacancies of ZrO2 supports, and then these trapped electrons immediately take part in reduction of H2O to H2. Thus, the electron recombination was suppressed and the WGS catalytic activity was improved. It is worth extending H2-etching technology to improve other thermocatalytic reactions.
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Affiliation(s)
- Li Song
- College of Biological, Chemical Sciences and Engineering , Jiaxing University , Jiaxing , Zhejiang 314001 , China
| | - Xuebo Cao
- College of Biological, Chemical Sciences and Engineering , Jiaxing University , Jiaxing , Zhejiang 314001 , China
| | - Lei Li
- College of Biological, Chemical Sciences and Engineering , Jiaxing University , Jiaxing , Zhejiang 314001 , China
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25
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Tosoni S, Pacchioni G. Oxide‐Supported Gold Clusters and Nanoparticles in Catalysis: A Computational Chemistry Perspective. ChemCatChem 2018. [DOI: 10.1002/cctc.201801082] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sergio Tosoni
- Dipartimento di Scienza dei MaterialiUniversità di Milano Bicocca Via Roberto Cozzi 55 Milano I-20125 Italy
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei MaterialiUniversità di Milano Bicocca Via Roberto Cozzi 55 Milano I-20125 Italy
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26
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Bazhenov A, Kauppinen MM, Honkala K. DFT Prediction of Enhanced Reducibility of Monoclinic Zirconia upon Rhodium Deposition. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2018; 122:6774-6778. [PMID: 30258520 PMCID: PMC6150675 DOI: 10.1021/acs.jpcc.8b01046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Oxides are an important class of materials and are widely used, for example, as supports in heterogeneous catalysis. In a number of industrial catalytic processes, oxide supports actively participate in chemical transformations by releasing lattice oxygen anions. While this is intuitively understood for reducible oxides, the reducibility of irreducible oxides may be modified via nanoengineering or upon inclusion of foreign species. Our calculations predict that the ability of irreducible monoclinic zirconia to release oxygen improves substantially upon deposition of rhodium. Through a comprehensive screening of Rh/ZrO2 with different size of the rhodium species, we find that a Rh adatom and a Rh4 nanocluster have the largest impact on the reducibility of zirconia. With increasing size the effect of rhodium decays. Our findings demonstrate that the phenomenon of enhanced reducibility of irreducible oxides in the presence of metals should be considered when interpreting experimental and computational results, as reactions that involve release of oxygen from an oxide support might be possible for irreducible oxides.
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27
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Halder A, Curtiss LA, Fortunelli A, Vajda S. Perspective: Size selected clusters for catalysis and electrochemistry. J Chem Phys 2018; 148:110901. [DOI: 10.1063/1.5020301] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Avik Halder
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Larry A. Curtiss
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Alessandro Fortunelli
- CNR-ICCOM, Consiglio Nazionale delle Ricerche, 56124 Pisa, Italy
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, USA
| | - Stefan Vajda
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
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28
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Zhang X, Yang Z, Wu R. A Au monolayer on WC(0001) with unexpected high activity towards CO oxidation. NANOSCALE 2018; 10:4753-4760. [PMID: 29465726 DOI: 10.1039/c7nr09498a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Catalysts with weak adsorption yet high reactivity towards CO are urgently required to solve the serious problem of CO poisoning that occurs in many important reactions, e.g., in fuel cells. Using the combination of density functional calculations and ab initio molecular dynamic simulations, we found a promising electrocatalyst for this purpose: a Au monolayer on WC(0001) (AuML/WC), which has both high oxygen reduction activity and high tolerance to CO poisoning. The advantages of using AuML/WC as an electrocatalyst in fuel cells are demonstrated through analyses of energetics of different reaction steps as well as interaction properties of reactants and products. We anticipate that the present results are useful to advance the development of efficient catalysts with high tolerance to CO poisoning.
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Affiliation(s)
- Xilin Zhang
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China.
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29
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DFT insight into the support effect on the adsorption and activation of key species over Co catalysts for CO2 methanation. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2017.12.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Negreiros FR, Halder A, Yin C, Singh A, Barcaro G, Sementa L, Tyo EC, Pellin MJ, Bartling S, Meiwes‐Broer K, Seifert S, Sen P, Nigam S, Majumder C, Fukui N, Yasumatsu H, Vajda S, Fortunelli A. Bimetallic Ag‐Pt Sub‐nanometer Supported Clusters as Highly Efficient and Robust Oxidation Catalysts. Angew Chem Int Ed Engl 2017; 57:1209-1213. [DOI: 10.1002/anie.201709784] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/15/2017] [Indexed: 11/12/2022]
Affiliation(s)
| | - Avik Halder
- Materials Science Division Argonne National Laboratory Lemont IL USA
| | - Chunrong Yin
- Materials Science Division Argonne National Laboratory Lemont IL USA
| | - Akansha Singh
- Harish-Chandra Research Institute, HBNI Chhatnag Road Jhunsi Allahabad 211019 India
| | | | - Luca Sementa
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche Pisa Italy
| | - Eric C. Tyo
- Materials Science Division Argonne National Laboratory Lemont IL USA
| | - Michael J. Pellin
- Materials Science Division Argonne National Laboratory Lemont IL USA
| | | | | | - Sönke Seifert
- X-ray Science Division Argonne National Laboratory Lemont IL USA
| | - Prasenjit Sen
- Harish-Chandra Research Institute, HBNI Chhatnag Road Jhunsi Allahabad 211019 India
| | - Sandeep Nigam
- Chemistry Division Bhabha Atomic Research Centre Trombay Mumbai- 400 085 India
| | - Chiranjib Majumder
- Chemistry Division Bhabha Atomic Research Centre Trombay Mumbai- 400 085 India
| | - Nobuyuki Fukui
- East Tokyo Laboratory Genesis Research Institute, Inc. Ichikawa Chiba 272-0001 Japan
| | - Hisato Yasumatsu
- Cluster Research Laboratory Toyota Technological Institute: in, East Tokyo Laboratory, Genesis Research Institute, Inc. Ichikawa Chiba 272-0001 Japan
| | - Stefan Vajda
- Materials Science Division Argonne National Laboratory Lemont IL USA
- Nanoscience and Technology Division Argonne National Laboratory Lemont IL USA
- Institute for Molecular Engineering University of Chicago Chicago IL USA
| | - Alessandro Fortunelli
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche Pisa Italy
- Materials and Process Simulation Center California Institute of Technology Pasadena CA USA
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31
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Negreiros FR, Halder A, Yin C, Singh A, Barcaro G, Sementa L, Tyo EC, Pellin MJ, Bartling S, Meiwes-Broer KH, Seifert S, Sen P, Nigam S, Majumder C, Fukui N, Yasumatsu H, Vajda S, Fortunelli A. Bimetallic Ag-Pt Sub-nanometer Supported Clusters as Highly Efficient and Robust Oxidation Catalysts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Avik Halder
- Materials Science Division; Argonne National Laboratory; Lemont IL USA
| | - Chunrong Yin
- Materials Science Division; Argonne National Laboratory; Lemont IL USA
| | - Akansha Singh
- Harish-Chandra Research Institute, HBNI; Chhatnag Road Jhunsi Allahabad 211019 India
| | - Giovanni Barcaro
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche; Pisa Italy
| | - Luca Sementa
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche; Pisa Italy
| | - Eric C. Tyo
- Materials Science Division; Argonne National Laboratory; Lemont IL USA
| | - Michael J. Pellin
- Materials Science Division; Argonne National Laboratory; Lemont IL USA
| | | | | | - Sönke Seifert
- X-ray Science Division; Argonne National Laboratory; Lemont IL USA
| | - Prasenjit Sen
- Harish-Chandra Research Institute, HBNI; Chhatnag Road Jhunsi Allahabad 211019 India
| | - Sandeep Nigam
- Chemistry Division; Bhabha Atomic Research Centre; Trombay Mumbai- 400 085 India
| | - Chiranjib Majumder
- Chemistry Division; Bhabha Atomic Research Centre; Trombay Mumbai- 400 085 India
| | - Nobuyuki Fukui
- East Tokyo Laboratory; Genesis Research Institute, Inc.; Ichikawa Chiba 272-0001 Japan
| | - Hisato Yasumatsu
- Cluster Research Laboratory; Toyota Technological Institute: in, East Tokyo Laboratory, Genesis Research Institute, Inc. Ichikawa; Chiba 272-0001 Japan
| | - Stefan Vajda
- Materials Science Division; Argonne National Laboratory; Lemont IL USA
- Nanoscience and Technology Division; Argonne National Laboratory; Lemont IL USA
- Institute for Molecular Engineering; University of Chicago; Chicago IL USA
| | - Alessandro Fortunelli
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche; Pisa Italy
- Materials and Process Simulation Center; California Institute of Technology; Pasadena CA USA
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32
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Ruiz Puigdollers A, Schlexer P, Tosoni S, Pacchioni G. Increasing Oxide Reducibility: The Role of Metal/Oxide Interfaces in the Formation of Oxygen Vacancies. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01913] [Citation(s) in RCA: 423] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio Ruiz Puigdollers
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Philomena Schlexer
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Sergio Tosoni
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 55 I-20125 Milano, Italy
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33
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Ruiz Puigdollers A, Pacchioni G. Reducibility of ZrO 2/Pt 3Zr and ZrO 2/Pt 2D films compared to bulk zirconia: a DFT+U study of oxygen removal and H 2 adsorption. NANOSCALE 2017; 9:6866-6876. [PMID: 28497820 DOI: 10.1039/c7nr01904a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Oxide reducibility is an important property that determines the chemical and physical behavior of the materials under working conditions. Zirconia is a non-reducible oxide that exhibits high resistance to the loss of oxygen and low reactivity towards hydrogen, two typical processes involved in oxide reduction. Oxide reducibility can change substantially by nanostructuring (e.g. formation of nanoparticles). In this study, we investigate theoretically by means of DFT+U calculations including dispersion interactions the properties of 2D zirconia films supported on a Pt3Zr alloy and Pt metal surfaces, two systems recently prepared experimentally. The results show that the supported ZrO2 ultrathin films behave very differently from the corresponding bulk oxide, with a low formation energy of oxygen vacancies, and a clear tendency to split the H2 molecule homolytically with direct reduction of the oxide. The comparison of free-standing and supported ZrO2 films shows that these peculiar properties are not due to the formation of a 2D nanostructure, but rather to the presence of the metal support and of a metal/oxide interface. The results provide evidence for the uncommon properties of supported 2D oxides.
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Affiliation(s)
- Antonio Ruiz Puigdollers
- Dipartimento di Scienza dei Materiali, Università di Milano - Bicocca, Via R. Cozzi 55, 20125, Milan, Italy.
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