1
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Tu Y, Huang L, Cheng X, Tian B, Zhang D, Hu J, Ding H, Xu Q, Ye Y, Zhu J. Modulating Nanoparticle Structure by Metal-Metal Oxide Interfacial Interaction in a CeO 2-Supported Bimetallic System: The Ni-Cu Case. J Phys Chem Lett 2024; 15:4096-4104. [PMID: 38587484 DOI: 10.1021/acs.jpclett.4c00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Structure-optimized bimetallic and multicomponent catalysts often outperform single-component catalysts, inspiring a detailed investigation of metal-metal and metal-support interactions in the system. We investigated the geometric and electronic structures of ceria-supported Ni-Cu particles prepared using different metal deposition sequences employing a combination of X-ray photoelectron spectroscopy, resonant photoemission spectroscopy, and infrared reflection absorption spectroscopy. The bimetallic model catalyst structure was altered by a distinct surface evolution process determined by the metal deposition sequence. The postdeposited Cu stays on the surface of Ni predeposited CeO2 and forms only a limited Ni-Cu alloy in the Cu-contacted Ni region. However, when Ni is deposited on the Cu predeposited CeO2 surface, Ni can migrate through the Cu layer to the Cu-ceria interface and form an extended Ni-Cu alloy to the whole deposited metal layer on the ceria surface. The dynamic metal diffusion in the CeO2-supported Ni-Cu system indicates that metal-support interactions can be used to achieve the rational design of a bimetallic composition distribution during catalyst preparation.
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Affiliation(s)
- Yi Tu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Luchao Huang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Xingwang Cheng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Bingchu Tian
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Dongling Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Jun Hu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Honghe Ding
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Qian Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Yifan Ye
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
- Department of Chemical Physics and Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230026, People's Republic of China
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2
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Investigation of Cu-doped ceria through a combined spectroscopic approach: involvement of different catalytic sites in CO oxidation. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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3
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Yang Y, He A, Li H, Zou Q, Liu Z, Tao C, Du J. Operando Constructing Cu/Cu 2O Electrocatalysts for Efficient CO 2 Electroreduction to Ethanol: CO 2-Assisted Structural Evolution of Octahedral Cu 2O by Operando CV Activation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yong Yang
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
| | - Anbang He
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
| | - Hui Li
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
| | - Qian Zou
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
| | - Zuohua Liu
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University, NO.174 Shazheng Street Rd., Shapingba, Chongqing400044, China
| | - Changyuan Tao
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University, NO.174 Shazheng Street Rd., Shapingba, Chongqing400044, China
| | - Jun Du
- School of Chemistry and Chemical Engineering Chongqing University, No.55 Daxuecheng South Rd., Shapingba, Chongqing401331, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University, NO.174 Shazheng Street Rd., Shapingba, Chongqing400044, China
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4
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Xu J, Mu C, Chen M. Structure and Properties of Ultrathin SiO x Films on Cu(111). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11414-11420. [PMID: 36067341 DOI: 10.1021/acs.langmuir.2c01701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The metal-oxide interface plays a crucial role in catalysis, and it has attracted increasing interest in recent years. Cu/SiO2, as a common copper-based catalyst, has been widely used in industrial catalysis. However, it is still a challenge to clarify the structures of the interface of Cu-SiOx and the effect on catalytic performance. Herein, we prepared ultrathin SiOx films by evaporating Si onto a Cu(111) surface followed by annealing in an O2 atmosphere, which were characterized by various surface science techniques. The results showed that a SiOx film could grow nearly layer-by-layer on the Cu(111) surface in the present condition. Both X-ray photoelectron spectroscopy (XPS) and high-resolution electron energy loss spectroscopy (HREELS) results confirmed the presence of Cu-O-Si and Si-O-Si species. Thermal stability experiments illustrated that the well-ordered silica films were stable under annealing in vacuum. The feature of CO adsorption suggested a CO-Cuδ+ species induced from the Cuδ+-O-Si. Low-energy ion scattering spectroscopy (LEIS) and XPS results demonstrated that some Cu2O appeared on the surface when the 1 ML SiOx/Cu(111) was exposed in O2 at 353 K.
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Affiliation(s)
- Jie Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Changle Mu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Mingshu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
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5
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Huang E, Rui N, Rosales R, Kang J, Nemšák S, Senanayake SD, Rodriguez JA, Liu P. Highly Selective Methane to Methanol Conversion on Inverse SnO 2/Cu 2O/Cu(111) Catalysts: Unique Properties of SnO 2 Nanostructures and the Inhibition of the Direct Oxidative Combustion of Methane. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erwei Huang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Ning Rui
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Rina Rosales
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Jindong Kang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Slavomir Nemšák
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sanjaya D. Senanayake
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - José A. Rodriguez
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Ping Liu
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
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6
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Liu K, Jiang L, Huang W, Zhu G, Zhang YJ, Xu C, Qin R, Liu P, Hu C, Wang J, Li JF, Yang F, Fu G, Zheng N. Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis. Nat Commun 2022; 13:2597. [PMID: 35562193 PMCID: PMC9095604 DOI: 10.1038/s41467-022-30327-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/26/2022] [Indexed: 12/03/2022] Open
Abstract
The interfacial sites of metal-support interface have been considered to be limited to the atomic region of metal/support perimeter, despite their high importance in catalysis. By using single-crystal surface and nanocrystal as model catalysts, we now demonstrate that the overgrowth of atomic-thick Cu2O on metal readily creates a two-dimensional (2D) microporous interface with Pd to enhance the hydrogenation catalysis. With the hydrogenation confined within the 2D Cu2O/Pd interface, the catalyst exhibits outstanding activity and selectivity in the semi-hydrogenation of alkynes. Alloying Cu(0) with Pd under the overlayer is the major contributor to the enhanced activity due to the electronic modulation to weaken the H adsorption. Moreover, the boundary or defective sites on the Cu2O overlayer can be passivated by terminal alkynes, reinforcing the chemical stability of Cu2O and thus the catalytic stability toward hydrogenation. The deep understanding allows us to extend the interfacial sites far beyond the metal/support perimeter and provide new vectors for catalyst optimization through 2D interface interaction.
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Affiliation(s)
- Kunlong Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Lizhi Jiang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- The Straits Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University, Fuzhou, 350117, China
| | - Wugen Huang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guozhen Zhu
- Department of Mechanical Engineering and Manitoba Institute of Materials, University of Manitoba, Winnipeg, MB, R3T 5V6, Canada
| | - Yue-Jiao Zhang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chaofa Xu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ruixuan Qin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Pengxin Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chengyi Hu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jingjuan Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Jian-Feng Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Fan Yang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
| | - Gang Fu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361102, China.
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361102, China.
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7
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Hayashida K, Tsuda Y, Yamada T, Yoshigoe A, Okada M. Revisit of XPS Studies of Supersonic O 2 Molecular Adsorption on Cu(111): Copper Oxides. ACS OMEGA 2021; 6:26814-26820. [PMID: 34661036 PMCID: PMC8515815 DOI: 10.1021/acsomega.1c04663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/20/2021] [Indexed: 06/08/2023]
Abstract
We report the X-ray photoemission spectroscopy (XPS) characterization of the bulk Cu2O(111) surface and "8" and "29" oxide structures on Cu(111) prepared using a 0.5 eV O2 supersonic molecular beam. We propose a new structural model for the "8" oxide structure and also confirm the previously proposed model for the "29" oxide structure on Cu(111), based on the O 1s XPS spectra. The detection angle dependence of the O 1s spectra supports that the nanopyramidal model is more preferable for the (√3 × √3)R30° Cu2O(111). We also report electronic excitations that O 1s electrons suffer.
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Affiliation(s)
- Koki Hayashida
- Department
of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yasutaka Tsuda
- Materials
Sciences Research Center, Japan Atomic Energy
Agency, Sayo-gun, Hyogo 679-5148, Japan
| | - Takashi Yamada
- Department
of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Akitaka Yoshigoe
- Materials
Sciences Research Center, Japan Atomic Energy
Agency, Sayo-gun, Hyogo 679-5148, Japan
| | - Michio Okada
- Department
of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Institute
for Radiation Sciences, Osaka University, Toyonaka, Osaka 560-0043, Japan
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8
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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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9
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An W, Xu F, Stacchiola D, Liu P. Potassium-Induced Effect on the Structure and Chemical Activity of the CuxO/Cu(1 1 1) (x≤ 2) Surface: A Combined Scanning Tunneling Microscopy and Density Functional Theory Study. ChemCatChem 2015. [DOI: 10.1002/cctc.201500719] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei An
- Chemistry Department; Brookhaven National Laboratory; Upton New York 11973 USA
- College of Chemistry and Chemical Engineering; Shanghai University of Engineering Science; Shanghai 201620 P.R. China
| | - Fang Xu
- Chemistry Department; Stony Brook University; Stony Brook New York 11794 USA
| | - Dario Stacchiola
- Chemistry Department; Brookhaven National Laboratory; Upton New York 11973 USA
| | - Ping Liu
- Chemistry Department; Brookhaven National Laboratory; Upton New York 11973 USA
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10
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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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11
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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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12
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An W, Baber AE, Xu F, Soldemo M, Weissenrieder J, Stacchiola D, Liu P. Mechanistic Study of CO Titration on CuxO/Cu(1 1 1) (x≤2) Surfaces. ChemCatChem 2014. [DOI: 10.1002/cctc.201402177] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Baber AE, Yang X, Kim HY, Mudiyanselage K, Soldemo M, Weissenrieder J, Senanayake SD, Al-Mahboob A, Sadowski JT, Evans J, Rodriguez JA, Liu P, Hoffmann FM, Chen JG, Stacchiola DJ. Stabilization of Catalytically Active Cu+Surface Sites on Titanium-Copper Mixed-Oxide Films. Angew Chem Int Ed Engl 2014; 53:5336-40. [DOI: 10.1002/anie.201402435] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Indexed: 11/06/2022]
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14
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Baber AE, Yang X, Kim HY, Mudiyanselage K, Soldemo M, Weissenrieder J, Senanayake SD, Al-Mahboob A, Sadowski JT, Evans J, Rodriguez JA, Liu P, Hoffmann FM, Chen JG, Stacchiola DJ. Stabilization of Catalytically Active Cu+Surface Sites on Titanium-Copper Mixed-Oxide Films. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402435] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Liu X, Sui Y, Duan T, Meng C, Han Y. CO oxidation catalyzed by Pt-embedded graphene: a first-principles investigation. Phys Chem Chem Phys 2014; 16:23584-93. [DOI: 10.1039/c4cp02106a] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of reactive Pt atoms and defects over graphene makes Pt-embedded graphene a superior catalyst for low-temperature CO oxidation.
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Affiliation(s)
- Xin Liu
- School of Chemistry
- Dalian University of Technology
- Dalian, P. R. China
| | - Yanhui Sui
- School of Chemistry
- Dalian University of Technology
- Dalian, P. R. China
| | - Ting Duan
- School of Chemistry
- Dalian University of Technology
- Dalian, P. R. China
| | - Changong Meng
- School of Chemistry
- Dalian University of Technology
- Dalian, P. R. China
| | - Yu Han
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology
- Thuwal, Kingdom of Saudi Arabia
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16
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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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17
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Mudiyanselage K, Yang Y, Hoffmann FM, Furlong OJ, Hrbek J, White MG, Liu P, Stacchiola DJ. Adsorption of hydrogen on the surface and sub-surface of Cu(111). J Chem Phys 2013; 139:044712. [DOI: 10.1063/1.4816515] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Mudiyanselage K, Kim HY, Senanayake SD, Baber AE, Liu P, Stacchiola D. Probing adsorption sites for CO on ceria. Phys Chem Chem Phys 2013; 15:15856-62. [DOI: 10.1039/c3cp52295d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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