1
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Jiang D, Yao Y, Li T, Wan G, Pereira‐Hernández XI, Lu Y, Tian J, Khivantsev K, Engelhard MH, Sun C, García‐Vargas CE, Hoffman AS, Bare SR, Datye AK, Hu L, Wang Y. Tailoring the Local Environment of Platinum in Single‐Atom Pt
1
/CeO
2
Catalysts for Robust Low‐Temperature CO Oxidation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dong Jiang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Yonggang Yao
- Department of Materials Science and Engineering University of Maryland College Park MD 20742 USA
- Current address: State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China
| | - Tangyuan Li
- Department of Materials Science and Engineering University of Maryland College Park MD 20742 USA
| | - Gang Wan
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
| | - Xavier Isidro Pereira‐Hernández
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Yubing Lu
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Jinshu Tian
- 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
| | - Mark H. Engelhard
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Chengjun Sun
- X-ray Science Division Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
| | - Carlos E. García‐Vargas
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
| | - Adam S. Hoffman
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
| | - Simon R. Bare
- Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
| | - Abhaya K. Datye
- Department of Chemical and Biological Engineering and Center for Micro-Engineered Materials University of New Mexico Albuquerque NM 87131 USA
| | - Liangbing Hu
- Department of Materials Science and Engineering University of Maryland College Park MD 20742 USA
| | - Yong Wang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99354 USA
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2
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Jiang D, Yao Y, Li T, Wan G, Pereira-Hernández XI, Lu Y, Tian J, Khivantsev K, Engelhard MH, Sun C, García-Vargas CE, Hoffman AS, Bare SR, Datye AK, Hu L, Wang Y. Tailoring the Local Environment of Platinum in Single-Atom Pt 1 /CeO 2 Catalysts for Robust Low-Temperature CO Oxidation. Angew Chem Int Ed Engl 2021; 60:26054-26062. [PMID: 34346155 DOI: 10.1002/anie.202108585] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 11/09/2022]
Abstract
A single-atom Pt1 /CeO2 catalyst formed by atom trapping (AT, 800 °C in air) shows excellent thermal stability but is inactive for CO oxidation at low temperatures owing to over-stabilization of Pt2+ in a highly symmetric square-planar Pt1 O4 coordination environment. Reductive activation to form Pt nanoparticles (NPs) results in enhanced activity; however, the NPs are easily oxidized, leading to drastic activity loss. Herein we show that tailoring the local environment of isolated Pt2+ by thermal-shock (TS) synthesis leads to a highly active and thermally stable Pt1 /CeO2 catalyst. Ultrafast shockwaves (>1200 °C) in an inert atmosphere induced surface reconstruction of CeO2 to generate Pt single atoms in an asymmetric Pt1 O4 configuration. Owing to this unique coordination, Pt1 δ+ in a partially reduced state dynamically evolves during CO oxidation, resulting in exceptional low-temperature performance. CO oxidation reactivity on the Pt1 /CeO2 _TS catalyst was retained under oxidizing conditions.
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Affiliation(s)
- Dong Jiang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Yonggang Yao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA.,Current address: State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tangyuan Li
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Gang Wan
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Xavier Isidro Pereira-Hernández
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Yubing Lu
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jinshu Tian
- 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
| | - Mark H Engelhard
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Chengjun Sun
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Carlos E García-Vargas
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA
| | - Adam S Hoffman
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Simon R Bare
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Abhaya K Datye
- Department of Chemical and Biological Engineering and Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Yong Wang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, 99164, USA.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
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3
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Zhong JQ, Han ZK, Werner K, Li XY, Gao Y, Shaikhutdinov S, Freund HJ. Water-Assisted Homolytic Dissociation of Propyne on a Reduced Ceria Surface. Angew Chem Int Ed Engl 2020; 59:6150-6154. [PMID: 31930756 PMCID: PMC7187185 DOI: 10.1002/anie.201914271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/15/2019] [Indexed: 12/03/2022]
Abstract
The emergence of ceria (CeO2) as an efficient catalyst for the selective hydrogenation of alkynes has attracted great attention. Intensive research effort has been devoted to understanding the underlying catalytic mechanism, in particular the H2–CeO2 interaction. Herein, we show that the adsorption of propyne (C3H4) on ceria, another key aspect in the hydrogenation of propyne to propene, strongly depends on the degree of reduction of the ceria surface and hydroxylation of the surface, as well as the presence of water. The dissociation of propyne and the formation of methylacetylide (CH3CC‐) have been identified through the combination of infrared reflection absorption spectroscopy (IRAS) and DFT calculations. We demonstrate that propyne undergoes heterolytic dissociation on the reduced ceria surface by forming a methylacetylide ion on the oxygen vacancy site and transferring a proton to the nearby oxygen site (OH group), while a water molecule that competes with the chemisorbed methylacetylide at the vacancy site assists the homolytic dissociation pathway by rebounding the methylacetylide to the nearby oxygen site.
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Affiliation(s)
- Jian-Qiang Zhong
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Zhong-Kang Han
- Theory Department, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.,Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, 143026, Moscow, Russia.,Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China
| | - Kristin Werner
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Xiao-Yan Li
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China.,Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210, Shanghai, China
| | - Shamil Shaikhutdinov
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Hans-Joachim Freund
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
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4
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Zhong J, Han Z, Werner K, Li X, Gao Y, Shaikhutdinov S, Freund H. Wasserunterstützte homolytische Dissoziation von Propin auf reduzierter Ceroxidoberfläche. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian‐Qiang Zhong
- Department of Chemical PhysicsFritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Deutschland
| | - Zhong‐Kang Han
- Theory DepartmentFritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Deutschland
- Center for Energy Science and TechnologySkolkovo Institute of Science and Technology 143026 Moscow Russland
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences 201800 Shanghai China
| | - Kristin Werner
- Department of Chemical PhysicsFritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Deutschland
| | - Xiao‐Yan Li
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences 201800 Shanghai China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences 201800 Shanghai China
- Zhangjiang LaboratoryShanghai Advanced Research InstituteChinese Academy of Sciences 201210 Shanghai China
| | - Shamil Shaikhutdinov
- Department of Chemical PhysicsFritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Deutschland
| | - Hans‐Joachim Freund
- Department of Chemical PhysicsFritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Deutschland
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5
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Guo Y, Guo X, Song C, Han X, Liu H, Zhao Z. Capsule-Structured Copper-Zinc Catalyst for Highly Efficient Hydrogenation of Carbon Dioxide to Methanol. CHEMSUSCHEM 2019; 12:4916-4926. [PMID: 31560446 DOI: 10.1002/cssc.201902485] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 09/26/2019] [Indexed: 06/10/2023]
Abstract
To develop a new and efficient CO2 -to-methanol catalyst is of extreme significance but still remains a challenge. Herein, an innovative indirect two-step strategy is reported to synthesize a highly efficient capsule-structured copper-based CO2 -to-methanol catalyst (CZA-r@CZM). It consists of a structurally reconstructed millimeter-sized Cu/ZnO/Al2 O3 core (CZA-r) with intensified Cu-ZnO interactions, which is made by a facile hydrothermal treatment in an alkaline aqueous solution, and a Cu/ZnO/MgO (CZM) shell prepared by an ethylene glycol-assisted physical coating method. The CZA-r core displays 2.7 times higher CO2 hydrogenation activity with 2.0 times higher CO selectivity than the previously reported Cu/ZnO/Al2 O3 (CZA-p), whereas the CZM shell can efficiently catalyze hydrogenation of the as-formed CO from the CZA-r core to methanol as it passes through the shell. As a result, the developed capsule-structured CZA-r@CZM catalyst exhibits 2.4 times higher CO2 conversion with 1.8 times higher turnover frequency and 2.3-fold higher methanol space-time yield than the CZA-p catalyst (729.8 vs. 312.6 gMeOH kgcat -1 h-1 ). In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs) experiments reveal that the CO2 hydrogenation reaction proceeds through a reverse water-gas shift reaction followed by a CO hydrogenation pathway via an *H3 CO intermediate. This work not only produces an efficient CO2 -to-methanol catalyst, but also opens a new avenue for designing superior catalysts for other consecutive transformations.
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Affiliation(s)
- Yongle Guo
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P.R. China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P.R. China
| | - Chunshan Song
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P.R. China
- EMS Energy Institute, PSU-DUT Joint Center for Energy Research and Departments of Energy & Mineral Engineering and Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, 16802, USA
| | - Xinghua Han
- School of Chemical Engineering and Technology, North University of China, Taiyuan, Shanxi, 030051, P.R. China
| | - Hongyang Liu
- Shenyang Research Center of Material Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P.R. China
| | - Zhongkui Zhao
- State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P.R. China
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6
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Yu J, Zhou L, Lei J, Wang L, Zhang J, Liu Y. g-C3
N4
Inverse Opals with Isotype Heterostructure for Enhanced Visible-Light-Driven Photocatalysis. Chem Asian J 2018; 13:3261-3267. [DOI: 10.1002/asia.201801103] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/20/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Jie Yu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process; School of Resources and Environmental Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Liang Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process; School of Resources and Environmental Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Juying Lei
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process; School of Resources and Environmental Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
- Shanghai Institute of Pollution Control and Ecological Security; Shanghai 200092 P. R. China
| | - Lingzhi Wang
- Key Lab for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Jinlong Zhang
- Key Lab for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Yongdi Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process; School of Resources and Environmental Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 P. R. China
- Shanghai Institute of Pollution Control and Ecological Security; Shanghai 200092 P. R. China
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7
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Peng H, Rao C, Zhang N, Wang X, Liu W, Mao W, Han L, Zhang P, Dai S. Confined Ultrathin Pd‐Ce Nanowires with Outstanding Moisture and SO
2
Tolerance in Methane Combustion. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803393] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Honggen Peng
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA
| | - Cheng Rao
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Ning Zhang
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Xiang Wang
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Wenming Liu
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Wenting Mao
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Lu Han
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Pengfei Zhang
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
- Department of Chemistry University of Tennessee Knoxville TN 37996 USA
| | - Sheng Dai
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA
- Department of Chemistry University of Tennessee Knoxville TN 37996 USA
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8
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Peng H, Rao C, Zhang N, Wang X, Liu W, Mao W, Han L, Zhang P, Dai S. Confined Ultrathin Pd‐Ce Nanowires with Outstanding Moisture and SO
2
Tolerance in Methane Combustion. Angew Chem Int Ed Engl 2018; 57:8953-8957. [DOI: 10.1002/anie.201803393] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Honggen Peng
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA
| | - Cheng Rao
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Ning Zhang
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Xiang Wang
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Wenming Liu
- Institute of Applied Chemistry College of Chemistry Nanchang University Nanchang 330031 P. R. China
| | - Wenting Mao
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Lu Han
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Pengfei Zhang
- School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China
- Department of Chemistry University of Tennessee Knoxville TN 37996 USA
| | - Sheng Dai
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA
- Department of Chemistry University of Tennessee Knoxville TN 37996 USA
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9
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Yang C, Yu X, Heißler S, Weidler PG, Nefedov A, Wang Y, Wöll C, Kropp T, Paier J, Sauer J. O2
-Aktivierung an Cerdioxid-Katalysatoren - Zur Bedeutung der kristallographischen Orientierung des Substrats. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709199] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chengwu Yang
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Xiaojuan Yu
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Stefan Heißler
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Peter G. Weidler
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Alexei Nefedov
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Yuemin Wang
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Christof Wöll
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Thomas Kropp
- Institut für Chemie; Humboldt-Universität zu Berlin; 10099 Berlin Deutschland
| | - Joachim Paier
- Institut für Chemie; Humboldt-Universität zu Berlin; 10099 Berlin Deutschland
| | - Joachim Sauer
- Institut für Chemie; Humboldt-Universität zu Berlin; 10099 Berlin Deutschland
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10
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Yang C, Yu X, Heißler S, Weidler PG, Nefedov A, Wang Y, Wöll C, Kropp T, Paier J, Sauer J. O 2 Activation on Ceria Catalysts-The Importance of Substrate Crystallographic Orientation. Angew Chem Int Ed Engl 2017; 56:16399-16404. [PMID: 29024254 DOI: 10.1002/anie.201709199] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 11/05/2022]
Abstract
An atomic-level understanding of dioxygen activation on metal oxides remains one of the major challenges in heterogeneous catalysis. By performing a thorough surface-science study of all three low-index single-crystal surfaces of ceria, probably the most important redox catalysts, we provide a direct spectroscopic characterization of reactive dioxygen species at defect sites on the reduced ceria (110) and (100) surfaces. Surprisingly, neither of these superoxo and peroxo species was found on ceria (111), the thermodynamically most stable surface of this oxide. Applying density functional theory, we could relate these apparently inconsistent findings to a sub-surface diffusion of O vacancies on (111) substrates, but not on the less-closely packed surfaces. These observations resolve a long standing debate concerning the location of O vacancies on ceria surfaces and the activation of O2 on ceria powders.
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Affiliation(s)
- Chengwu Yang
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Xiaojuan Yu
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Stefan Heißler
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Peter G Weidler
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Alexei Nefedov
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Yuemin Wang
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Christof Wöll
- Institute of Functional Interfaces, IFG, Karlsruhe Institute of Technology, KIT, 76344, Eggenstein-Leopoldshafen, Germany
| | - Thomas Kropp
- Institut für Chemie, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
| | - Joachim Paier
- Institut für Chemie, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
| | - Joachim Sauer
- Institut für Chemie, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
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11
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Yang C, Yu X, Pleßow PN, Heißler S, Weidler PG, Nefedov A, Studt F, Wang Y, Wöll C. Rendering Photoreactivity to Ceria: The Role of Defects. Angew Chem Int Ed Engl 2017; 56:14301-14305. [DOI: 10.1002/anie.201707965] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Chengwu Yang
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Xiaojuan Yu
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Philipp N. Pleßow
- Institute of Catalysis Research and Technology, IKFT; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Stefan Heißler
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Peter G. Weidler
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Alexei Nefedov
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Felix Studt
- Institute of Catalysis Research and Technology, IKFT; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Yuemin Wang
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
| | - Christof Wöll
- Institute of Functional Interfaces, IFG; Karlsruhe Institute of Technology, KIT; 76344 Eggenstein-Leopoldshafen Germany
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12
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Yang C, Yu X, Pleßow PN, Heißler S, Weidler PG, Nefedov A, Studt F, Wang Y, Wöll C. Photoaktivierung von Cerdioxid: die Rolle von Defekten. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707965] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chengwu Yang
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Xiaojuan Yu
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Philipp N. Pleßow
- Institut für Katalyseforschung und -technologie, IKFT; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Stefan Heißler
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Peter G. Weidler
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Alexei Nefedov
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Felix Studt
- Institut für Katalyseforschung und -technologie, IKFT; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Yuemin Wang
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
| | - Christof Wöll
- Institut für Funktionelle Grenzflächen, IFG; Karlsruher Institut für Technologie, KIT; 76344 Eggenstein-Leopoldshafen Deutschland
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Yang C, Bebensee F, Chen J, Yu X, Nefedov A, Wöll C. Carbon Dioxide Adsorption on CeO2
(110): An XPS and NEXAFS Study. Chemphyschem 2017; 18:1874-1880. [DOI: 10.1002/cphc.201700240] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/08/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Chengwu Yang
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Fabian Bebensee
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Jun Chen
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- China Academy of Engineering Physics; Mianshan Road 64 621900 Mianyang China
| | - Xiaojuan Yu
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Alexei Nefedov
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Christof Wöll
- Institute of Functional Interfaces; Karlsruhe Institute of Technology; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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