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Ahasan MR, Wang R. CeO 2 nanorods supported CuO x-RuO x bimetallic catalysts for low temperature CO oxidation. J Colloid Interface Sci 2024; 654:1378-1392. [PMID: 37918097 DOI: 10.1016/j.jcis.2023.10.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/30/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023]
Abstract
Bimetallic catalysts often outperform monometallic catalysts due to changeable structural orientation, synergistic effects, and integration of two different metal or metal oxide properties. Here, a series of CeO2 nanorods (NR) supported bimetallic CuOx and RuOx catalysts (Cu: Ru ratios of 9:1, 7:3, and 5:5) were prepared using a wet impregnation method. In situ DRIFTS, H2 temperature programmed reduction (H2-TPR), CO temperature programmed desorption (CO-TPD), and other characterization techniques were used to investigate the effect of the Cu:Ru ratio on the activity of low-temperature CO oxidation. Among three catalysts, CeO2 NR supported 7 wt% Cu-3 wt% Ru catalyst after a reduction activation treatment showed the best performance with 100 % CO conversion at 166 °C and the lowest activation energy of 18.37 kJ mol-1. Raman and XPS profiles revealed that the origin of the superior performance is at least partially related to the high surface oxygen vacancy concentration and other distinct oxygen species (physi-/chemi-sorbed oxygen and bulk lattice oxygen), leading to outstanding adsorption and oxidation property of CO.
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Affiliation(s)
- Md Robayet Ahasan
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States
| | - Ruigang Wang
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States.
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2
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Müller N, Banu R, Loxha A, Schrenk F, Lindenthal L, Rameshan C, Pittenauer E, Llorca J, Timoshenko J, Marini C, Barrabés N. Dynamic behaviour of platinum and copper dopants in gold nanoclusters supported on ceria catalysts. Commun Chem 2023; 6:277. [PMID: 38110481 PMCID: PMC10728199 DOI: 10.1038/s42004-023-01068-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 11/21/2023] [Indexed: 12/20/2023] Open
Abstract
Understanding the behaviour of active catalyst sites at the atomic level is crucial for optimizing catalytic performance. Here, the evolution of Pt and Cu dopants in Au25 clusters on CeO2 supports is investigated in the water-gas shift (WGS) reaction, using operando XAFS and DRIFTS. Different behaviour is observed for the Cu and Pt dopants during the pretreatment and reaction. The Cu migrates and builds clusters on the support, whereas the Pt creates single-atom active sites on the surface of the cluster, leading to better performance. Doping with both metals induces strong interactions and pretreatment and reaction conditions lead to the growth of the Au clusters, thereby affecting their catalytic behaviour. This highlights importance of understanding the behaviour of atoms at different stages of catalyst evolution. These insights into the atomic dynamics at the different stages are crucial for the precise optimisation of catalysts, which ultimately enables improved catalytic performance.
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Affiliation(s)
- Nicole Müller
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
| | - Rareş Banu
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
| | - Adea Loxha
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
| | - Florian Schrenk
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
- Chair of Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700, Leoben, Austria
| | - Lorenz Lindenthal
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
- Chair of Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700, Leoben, Austria
| | - Christoph Rameshan
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
- Chair of Physical Chemistry, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700, Leoben, Austria
| | - Ernst Pittenauer
- Institute of Analytics, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria
| | - Jordi Llorca
- Institute of Energy Technologies and Department of Chemical Engineering, Universitat Politècnica de Catalunya, EEBE, Eduard Maristany 10-14, 08019, Barcelona, Spain
| | - Janis Timoshenko
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, 14195, Berlin, Germany
| | - Carlo Marini
- ALBA Synchrotron Light Facility, Carrer de la Llum 2-26, 08290, Cerdanyola del Valles, Barcelona, Spain
| | - Noelia Barrabés
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/165, 1060, Vienna, Austria.
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3
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Li Z, Wang M, Jia Y, Du R, Li T, Zheng Y, Chen M, Qiu Y, Yan K, Zhao WW, Wang P, Waterhouse GIN, Dai S, Zhao Y, Chen G. CeO 2/Cu 2O/Cu Tandem Interfaces for Efficient Water-Gas Shift Reaction Catalysis. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37339248 DOI: 10.1021/acsami.3c06386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
Metal-oxide interfaces on Cu-based catalysts play very important roles in the low-temperature water-gas shift reaction (LT-WGSR). However, developing catalysts with abundant, active, and robust Cu-metal oxide interfaces under LT-WGSR conditions remains challenging. Herein, we report the successful development of an inverse copper-ceria catalyst (Cu@CeO2), which exhibited very high efficiency for the LT-WGSR. At a reaction temperature of 250 °C, the LT-WGSR activity of the Cu@CeO2 catalyst was about three times higher than that of a pristine Cu catalyst without CeO2. Comprehensive quasi-in situ structural characterizations indicated that the Cu@CeO2 catalyst was rich in CeO2/Cu2O/Cu tandem interfaces. Reaction kinetics studies and density functional theory (DFT) calculations revealed that the Cu+/Cu0 interfaces were the active sites for the LT-WGSR, while adjacent CeO2 nanoparticles play a key role in activating H2O and stabilizing the Cu+/Cu0 interfaces. Our study highlights the role of the CeO2/Cu2O/Cu tandem interface in regulating catalyst activity and stability, thus contributing to the development of improved Cu-based catalysts for the LT-WGSR.
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Affiliation(s)
- Zhengjian Li
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Mingzhi Wang
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Yanyan Jia
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Centre, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Ruian Du
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Tan Li
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Yanping Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Mingshu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
| | - Yongcai Qiu
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Keyou Yan
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Wei-Wei Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Pei Wang
- College of Science, Huazhong Agricultural University, Wuhan 430074, PR China
| | | | - Sheng Dai
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Centre, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Yun Zhao
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Guangxu Chen
- School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, Guangdong 510006, China
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4
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Rostami M, Farajollahi AH, Amirkhani R, Farshchi ME. A review study on methanol steam reforming catalysts: Evaluation of the catalytic performance, characterizations, and operational parameters. AIP ADVANCES 2023; 13:030701. [DOI: 10.1063/5.0137706] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/26/2023] [Indexed: 08/28/2023]
Abstract
Conventional fossil-based energy sources have numerous environmental demerits; sustainable and renewable sources are attracting the undivided attention of researchers owing to their valuable physical and chemical features. Several industrial-scale technologies are employing hydrogen as a green energy source as the most preferential source. Not only is hydrogen a potent energy carrier but also it is not detrimental to the environment. Among many other hydrogen production processes, steam reforming of methanol (SRM) is deemed a practical method due to its low energy consumption. Cu, Ni, noble metals, etc., are the salient catalysts in SRM. Many researchers have conducted thorough studies incorporating improvement of the catalysts’ activity, mechanism predictions, and the impacts of operational parameters and reformers. This review concentrates on the SRM catalysts, supports, promoters, and the effect of the operational parameters on the process efficiency and H2 production yield. In this regard, the methanol conversion, H2 and CO selectivity, and operating parameters are notably contingent on the surface characterization and chemistry of the catalysts. Herein, Cu-, Ni-, and noble metal-based catalysts on various metal oxide supports, such as Al2O3 and ZnO, are assessed meticulously in the SRM process from the standpoint of mechanism and catalyst characterization. Most of the peer-reviewed studies had encountered agglomeration, metal particle sintering at high temperatures, coke formation, and deactivation of catalysts as the prevalent barriers. Hence, the novel methods of conquering the above-mentioned obstacles are evaluated in this review. Employment of diverse synthetic methods, bimetallic catalysts, distinct catalyst promoters, and unconventional supports, such as metal–organic frameworks, carbon nanotubes, and zeolites, are the salient routes to overcome the metal dispersion and thermal stability issues. In addition, the influence of operational parameters (temperature of the process, steam/carbon ratio, and feed flow rate) has been weighed painstakingly, along with introducing the research gap and future perspectives in the territory of SRM catalysts.
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Affiliation(s)
- Mohsen Rostami
- Department of Engineering, Imam Ali University, Tehran, Iran
| | | | | | - Mahdi Ebrahimi Farshchi
- Department of Chemical Engineering, Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran
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5
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Kamari V, Sharma A, Kumar N, Sillanpää M, Makgwane PR, Ahmaruzzaman M, Hosseini-Bandegharaei A, Rani M, Chinnumuthu P. TiO2-CeO2 assisted heterostructures for photocatalytic mitigation of environmental pollutants: A comprehensive study on band gap engineering and mechanistic aspects. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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6
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Graciani J, Grinter DC, Ramírez PJ, Palomino RM, Xu F, Waluyo I, Stacchiola D, Fdez Sanz J, Senanayake SD, Rodriguez JA. Conversion of CO 2 to Methanol and Ethanol on Pt/CeO x/TiO 2(110): Enabling Role of Water in C–C Bond Formation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03823] [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)
- Jesús Graciani
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Departamento de Química Física, Universidad de Sevilla, Sevilla 41012, Spain
| | - David C. Grinter
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Diamond Light Source, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - Pedro J. Ramírez
- Facultad de Ciencias, Universidad Central de Venezuela, 1020-A Caracas, Venezuela
- Zoneca-CENEX, R&D Laboratories, Alta Vista, 64770 Monterrey, México
| | - Robert M. Palomino
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Fang Xu
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Dario Stacchiola
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Javier Fdez Sanz
- Departamento de Química Física, Universidad de Sevilla, Sevilla 41012, Spain
| | - Sanjaya D. Senanayake
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - José A. Rodriguez
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
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7
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Sun R, Wang R, Liu X, Chen X, Che L, Fan H, Yang X, Guo Q. Hydrogen Production on Pt/TiO 2: Synergistic Catalysis between Pt Clusters and Interfacial Adsorbates. J Phys Chem Lett 2022; 13:3182-3187. [PMID: 35362985 DOI: 10.1021/acs.jpclett.2c00234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Understanding the mechanism of hydrogen (H2) formation from the conversion of water (H2O) and renewables on TiO2 surfaces with cocatalysts via either photocatalysis or other catalytic processes is of significant importance to the successful design of efficient catalysts. Herein, we have investigated H2 production from H2O, CH3OH, and C2H5OH on a Pt cluster covered rutile (R)-TiO2(110) surface (Ptclut/R-TiO2(110)) to address the mechanism of H2 production. Experimental results demonstrate that surface adsorbates not only help H atom diffusion on Ptclut/R-TiO2(110) but also take part in H2 production directly. Further density functional theory (DFT) calculations suggest that H2 production on Ptclut/R-TiO2(110) occurs via a synergistic catalysis process between Pt clusters and interfacial adsorbates rather than a recombination reaction of H atoms on Pt clusters. This work provides new insight into H2 production from H2O and renewables with Pt/TiO2 catalysts, which may be applicable to H2 production on other Pt cluster deposited metal oxide catalysts.
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Affiliation(s)
- Rulin Sun
- College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, P.R. China
| | - Ruimin Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P.R. China
| | - Xinlu Liu
- College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, P.R. China
| | - Xiao Chen
- Shenzhen Key Laboratory of Energy Chemistry, Southern University of Science and Technology, Shenzhen 518055, P.R. China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Li Che
- College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, P.R. China
| | - Hongjun Fan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P.R. China
| | - Xueming Yang
- Shenzhen Key Laboratory of Energy Chemistry, Southern University of Science and Technology, Shenzhen 518055, P.R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P.R. China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Qing Guo
- Shenzhen Key Laboratory of Energy Chemistry, Southern University of Science and Technology, Shenzhen 518055, P.R. China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
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8
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Lai XM, Xiao Q, Ma C, Wang WW, Jia CJ. Heterostructured Ceria-Titania-Supported Platinum Catalysts for the Water Gas Shift Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8575-8586. [PMID: 35124965 DOI: 10.1021/acsami.1c22795] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The water gas shift (WGS) reaction is a key process in the industrial hydrogen production and the development and application of the proton exchange membrane fuel cell. Metal oxide-supported highly dispersed Pt has been proved as an efficient catalyst for the WGS reaction. In this work, a series of supported 0.5Pt/xCe-10Ti (x = 1, 3, or 5) catalysts with different Ce/Ti molar ratios were prepared by a simple deposition-precipitation method. Compared with single TiO2- or CeO2-supported Pt catalysts, it was found that the 0.5Pt/3Ce-10Ti catalyst showed an obvious advantage in activity for the WGS reaction. In this catalyst, dispersed CeO2 nanoparticles were supported on the TiO2 sheets, and Pt single atoms and nanoparticles were located on CeO2 and at the boundary of TiO2 and CeO2, respectively. It found that the reduction ability of the supported Pt catalyst was remarkably improved; meanwhile, the adsorption strength of CO on the surface of 0.5Pt/3Ce-10Ti was moderate. The heterostructured CeO2-TiO2 support gave an effective regulation on the Pt status and further influenced the CO adsorption ability, inducing excellent WGS reaction activity. This work provides a reference for the development and application of heterostructured materials in heterogeneous catalysis.
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Affiliation(s)
- Xiao-Meng Lai
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Qi Xiao
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Chao Ma
- College of Materials Science and Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Wei-Wei Wang
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
| | - Chun-Jiang Jia
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China
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9
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Umesh NM, Wang SF, Kameoka S. Promotional effects of Pt–CeO2 fabricated by hydrothermal leaching of Al78Ce22-xPtx (x = 0, 0.1) intermetallic compound for efficient catalytic CO oxidation. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Reina TR, Gonzalez-Castaño M, Lopez-Flores V, Martínez T LM, Zitolo A, Ivanova S, Xu W, Centeno MA, Rodriguez JA, Odriozola JA. Au and Pt Remain Unoxidized on a CeO 2-Based Catalyst during the Water-Gas Shift Reaction. J Am Chem Soc 2021; 144:446-453. [PMID: 34928589 DOI: 10.1021/jacs.1c10481] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The active forms of Au and Pt in CeO2-based catalysts for the water-gas shift (WGS) reaction are an issue that remains unclear, although it has been widely studied. On one hand, ionic species might be responsible for weakening the Ce-O bonds, thus increasing the oxygen mobility and WGS activity. On the other hand, the close contact of Au or Pt atoms with CeO2 oxygen vacancies at the metal-CeO2 interface might provide the active sites for an efficient reaction. In this work, using in situ X-ray absorption spectroscopy, we demonstrate that both Au and Pt remain unoxidized during the reaction. Remarkable differences involving the dynamics established by both species under WGS atmospheres were recognized. For the prereduced Pt catalyst, the increase of the conversion coincided with a restructuration of the Pt atoms into cuboctahedrical metallic particles without significant variations on the overall particle size. Contrary to the relatively static behavior of Pt0, Au0 nanoparticles exhibited a sequence of particle splitting and agglomeration while maintaining a zero oxidation state despite not being located in a metallic environment during the process. High WGS activity was obtained when Au atoms were surrounded by oxygen. The fact that Au preserves its unoxidized state indicates that the chemical interaction between Au and oxygen must be necessarily electrostatic and that such an electrostatic interaction is fundamental for a top performance in the WGS process.
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Affiliation(s)
- Tomas R Reina
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain.,Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Miriam Gonzalez-Castaño
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain
| | - Victor Lopez-Flores
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain.,Synchrotron SOLEIL, L'Orme des Merisiers, B.P. 48, 91192 Gif-sur-Yvette, France
| | - L Marcela Martínez T
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain
| | - Andrea Zitolo
- Synchrotron SOLEIL, L'Orme des Merisiers, B.P. 48, 91192 Gif-sur-Yvette, France
| | - Svetlana Ivanova
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain
| | - Wenquian Xu
- Chemistry Department, Brookhaven National Laboratory, 98 Rochester Street, Upton, New York 11973, United States
| | - Miguel Angel Centeno
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain
| | - Jose A Rodriguez
- Chemistry Department, Brookhaven National Laboratory, 98 Rochester Street, Upton, New York 11973, United States
| | - Jose Antonio Odriozola
- Inorganic Chemistry Department and Materials Science Institute, University of Seville─CSIC, 41092 Sevilla, Spain.,Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom
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11
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Lee S, Ha H, Bae KT, Kim S, Choi H, Lee J, Kim JH, Seo J, Choi JS, Jo YR, Kim BJ, Yang Y, Lee KT, Kim HY, Jung W. A measure of active interfaces in supported catalysts for high-temperature reactions. Chem 2021. [DOI: 10.1016/j.chempr.2021.11.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Khani Y, Safari N, Bahadoran F, Soltanali S, Zamaniyan A. High Catalytic Activity and Low Coke Formation of Ni/Y xCe yRu zO 4 Catalysts in the Methane Reforming Process in a Microstructure Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasin Khani
- Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Nasser Safari
- Department of Chemistry, Shahid Beheshti University, Evin, 1983963113 Tehran, Iran
| | - Farzad Bahadoran
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Saeed Soltanali
- Catalysis Technologies Development Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
| | - Akbar Zamaniyan
- Gas Research Division, Research Institute of Petroleum Industry (RIPI), 1485733111 Tehran, Iran
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13
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Seeharaj P, Vittayakorn N, Morris J, Kim-Lohsoontorn P. CeO 2/CuO/TiO 2heterojunction photocatalysts for conversion of CO 2to ethanol. NANOTECHNOLOGY 2021; 32:375707. [PMID: 34098545 DOI: 10.1088/1361-6528/ac08be] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/07/2021] [Indexed: 05/27/2023]
Abstract
An attempt to reduce CO2emissions has led to the development of CeO2/CuO/TiO2heterojunction photocatalysts for photoconversion of CO2to useful products, e.g. ethanol. Composite photocatalysts were simply prepared by mixing TiO2(P25) with different mass ratios of CeO2(1 wt%) and CuO (2 or 3 wt%) by ball milling. The prepared photocatalysts had uniformly distributed CeO2and CuO phases, throughout the TiO2phase. The integration of CeO2and CuO into TiO2at 1 wt% CeO2and 3 wt% CuO produced a composite, with a reduced band gap of 2.88 eV, allowing absorption of lower energy light and a lower electron-hole recombination rate. The 1%CeO2/3%CuO/TiO2photocatalysts yielded ethanol at 30.5μmol gcat-1h-1, almost three times higher than the yield from pure TiO2. This improved CO2conversion efficiency was due to contributions from properties of both additives: CeO2increased light absorption, while CuO acted as an electron trap and enhanced CO2adsorption. In addition, the heterojunction at the interfaces facilitated the photogenerated charge separation, which, in turn, increased the charge participation in the catalyzed conversion reactions.
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Affiliation(s)
- Panpailin Seeharaj
- Advanced Materials Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, 10520 Ladkrabang, Bangkok, Thailand
| | - Naratip Vittayakorn
- Advanced Materials Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, 10520 Ladkrabang, Bangkok, Thailand
| | - John Morris
- KRIS Research and Innovation Services, King Mongkut's Institute of Technology Ladkrabang, 10520 Ladkrabang, Bangkok, Thailand
| | - Pattaraporn Kim-Lohsoontorn
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330 Pathumwan, Bangkok, Thailand
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14
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Murakami K, Mizutani Y, Sampei H, Ishikawa A, Sekine Y. Manipulation of CO adsorption over Me 1/CeO 2 by heterocation doping: Key roles of single-atom adsorption energy. J Chem Phys 2021; 154:164705. [PMID: 33940849 DOI: 10.1063/5.0049582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The performance of metal atoms chemically bonded to oxide supports cannot be explained solely by the intrinsic properties of the metals such as the d-band center. Herein, we present an in-depth study of the correlation between metal-oxide interactions and the properties of the supported metal using CO adsorption on Me1 (Fe1, Co1, and Ni1) loaded over CeO2 (111) doped with divalent (Ca, Sr, and Ba), trivalent (Al, Ga, Sc, Y, and La), and quadrivalent (Hf and Zr) heterocations. CO adsorption over Me1 is strongly dependent on the binding energies of Me1. Two factors led to this trend. First, the extent of the Me1-surface oxygen (Me1-O) bond relaxation during CO adsorption played a key role. Second, the d-band center shifted drastically because of charge transfer to the oxides. The shift is related to the oxophilicity of metals. Adsorption energies of Me1 over oxides include the contributions of the factors described above. Therefore, we can predict the activities of Me1 using the strength of anchoring by oxide supports. Results show that smaller ionic radii of the doped heterocations were associated with more tightly bound Me1. This finding sheds light on the possibility of heterocation-doping manipulating the reactivity of the Me1 catalyst based on theoretical predictions.
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Affiliation(s)
- Kota Murakami
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Yuta Mizutani
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Hiroshi Sampei
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Atsushi Ishikawa
- National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasushi Sekine
- Applied Chemistry, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555, Japan
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15
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16
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Lee J, Li C, Kang S, Park J, Kim JM, Kim DH. Pt nanoparticles encapsulated in CeO2 over-layers synthesized by controlled reductive treatment to suppress CH4 formation in high-temperature water-gas shift reaction. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Lee SM, Eom H, Kim SS. A study on the effect of CeO 2 addition to a Pt/TiO 2 catalyst on the reverse water gas shift reaction. ENVIRONMENTAL TECHNOLOGY 2021; 42:182-192. [PMID: 31141468 DOI: 10.1080/09593330.2019.1625954] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
In this study, a series of catalysts with the composition 1 wt% Pt/X% CeO2-Y% TiO2 (where X and Y range from 0 to 20%) was prepared via impregnation. The effects of different ratios of CeO2/TiO2 on the catalytic activity were examined during the reverse water gas shift reaction (RWGS). The catalytic activities of the Pt-impregnated catalysts were enhanced by increasing CeO2 loading. The activity tests, temperature-programmed reduction via H2, and step test of an elementary RWGS reaction over the catalysts confirmed that the catalytic activity depends on the number of TiO2 or CeO2 sites, which participate in the RWGS reaction, on the surface of the support.
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Affiliation(s)
- Sang Moon Lee
- Department of Environmental Energy Engineering, Kyonggi University, Suwon-si, Korea
| | - Hanki Eom
- Department of Environmental Energy Engineering, Kyonggi University, Suwon-si, Korea
| | - Sung Su Kim
- Department of Environmental Energy Engineering, Kyonggi University, Suwon-si, Korea
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18
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Affiliation(s)
- Honghui Ou
- Department of Chemistry Tsinghua University Beijing China
| | - Dingsheng Wang
- Department of Chemistry Tsinghua University Beijing China
| | - Yadong Li
- Department of Chemistry Tsinghua University Beijing China
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19
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Morato-Márquez J, Godavarthi S, Espinosa-González CG, Torres-Torres JG, Rodríguez-Domínguez A, Muñoz-Castro A, Ortiz-Chi F, Rodríguez-Kessler P. Structural characterization and electronic properties of Ru-doped Cun (n = 1–12) clusters. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Infantes-Molina A, Villanova A, Talon A, Kohan MG, Gradone A, Mazzaro R, Morandi V, Vomiero A, Moretti E. Au-Decorated Ce-Ti Mixed Oxides for Efficient CO Preferential Photooxidation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38019-38030. [PMID: 32687700 PMCID: PMC7458359 DOI: 10.1021/acsami.0c08258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
We investigated the photocatalytic behavior of gold nanoparticles supported on CeO2-TiO2 nanostructured matrixes in the CO preferential oxidation in H2-rich stream (photo-CO-PROX), by modifying the electronic band structure of ceria through addition of titania and making it more suitable for interacting with free electrons excited in gold nanoparticles through surface plasmon resonance. CeO2 samples with different TiO2 concentrations (0-20 wt %) were prepared through a slow coprecipitation method in alkaline conditions. The synthetic route is surfactant-free and environmentally friendly. Au nanoparticles (<1.0 wt % loading) were deposited on the surface of the CeO2-TiO2 oxides by deposition-precipitation. A benchmarking sample was also considered, prepared by standard fast coprecipitation, to assess how a peculiar morphology can affect the photocatalytic behavior. The samples appeared organized in a hierarchical needle-like structure, with different morphologies depending on the Ti content and preparation method, with homogeneously distributed Au nanoparticles decorating the Ce-Ti mixed oxides. The morphology influences the preferential photooxidation of CO to CO2 in excess of H2 under simulated solar light irradiation at room temperature and atmospheric pressure. The Au/CeO2-TiO2 systems exhibit much higher activity compared to a benchmark sample with a non-organized structure. The most efficient sample exhibited CO conversions of 52.9 and 80.2%, and CO2 selectivities equal to 95.3 and 59.4%, in the dark and under simulated sunlight, respectively. A clear morphology-functionality correlation was found in our systematic analysis, with CO conversion maximized for a TiO2 content equal to 15 wt %. The outcomes of this study are significant advancements toward the development of an effective strategy for exploitation of hydrogen as a viable clean fuel in stationary, automotive, and portable power generators.
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Affiliation(s)
- Antonia Infantes-Molina
- Departamento
de Química Inorgánica, Cristalografía y Mineralogía
(Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
| | - Andrea Villanova
- Department
of Molecular Sciences and Nanosystems, Ca’
Foscari University of Venice, Via Torino 155, 30172 Mestre Venezia, Italy
| | - Aldo Talon
- Department
of Molecular Sciences and Nanosystems, Ca’
Foscari University of Venice, Via Torino 155, 30172 Mestre Venezia, Italy
| | - Mojtaba Gilzad Kohan
- Division
of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden
| | - Alessandro Gradone
- CNR-IMM
Bologna Section, Via
Piero Gobetti 101, 40129 Bologna, Italy
- Chemistry
Department “Giacomo Ciamician”, University of Bologna, via Selmi 2, 40126 Bologna, Italy
| | - Raffaello Mazzaro
- CNR-IMM
Bologna Section, Via
Piero Gobetti 101, 40129 Bologna, Italy
| | - Vittorio Morandi
- CNR-IMM
Bologna Section, Via
Piero Gobetti 101, 40129 Bologna, Italy
| | - Alberto Vomiero
- Department
of Molecular Sciences and Nanosystems, Ca’
Foscari University of Venice, Via Torino 155, 30172 Mestre Venezia, Italy
- Division
of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden
| | - Elisa Moretti
- Department
of Molecular Sciences and Nanosystems, Ca’
Foscari University of Venice, Via Torino 155, 30172 Mestre Venezia, Italy
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21
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Wu Y, Lin J, Xu Y, Ma G, Wang J, Ding M. Transition Metals Modified Ni−M (M=Fe, Co, Cr and Mn) Catalysts Supported on Al
2
O
3
−ZrO
2
for Low‐Temperature CO
2
Methanation. ChemCatChem 2020. [DOI: 10.1002/cctc.202000399] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yushan Wu
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
| | - Jianghui Lin
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
| | - Yanfei Xu
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
| | - Guangyuan Ma
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
| | - Jie Wang
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
| | - Mingyue Ding
- School of Power and Mechanical EngineeringHubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan University Wuhan 430072 P. R. China
- Shenzhen Research Institute of Wuhan University Shenzhen 518108 P. R. China
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22
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Deng K, Lin L, Rui N, Vovchok D, Zhang F, Zhang S, Senanayake SD, Kim T, Rodriguez JA. Studies of CO2 hydrogenation over cobalt/ceria catalysts with in situ characterization: the effect of cobalt loading and metal–support interactions on the catalytic activity. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00962h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal–oxide interactions affect the catalytic properties of Co/CeO2 and can be used to control activity and selectivity.
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Affiliation(s)
- Kaixi Deng
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
| | - Lili Lin
- Chemistry Division
- Brookhaven National Laboratory
- Upton
- USA
| | - Ning Rui
- Chemistry Division
- Brookhaven National Laboratory
- Upton
- USA
| | | | - Feng Zhang
- Materials Science and Chemical Engineering Department
- Stony Brook University
- Stony Brook
- USA
| | - Shuhao Zhang
- Materials Science and Chemical Engineering Department
- Stony Brook University
- Stony Brook
- USA
| | | | - Taejin Kim
- Materials Science and Chemical Engineering Department
- Stony Brook University
- Stony Brook
- USA
| | - José A. Rodriguez
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
- Chemistry Division
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23
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Liu N, Yin P, Xu M, Yang Y, Zhang S, Zhang J, Meng X, Zhang J, Yu J, Man Y, Zhang X, Wei M. The catalytic mechanism of the Au@TiO 2−x/ZnO catalyst towards a low-temperature water-gas shift reaction. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02077b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A redox mechanism towards the water-gas shift reaction was certified based on in situ/operando experiments and density functional theory calculation studies.
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Affiliation(s)
- Ning Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Pan Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Ming Xu
- College of Chemistry and Molecular Engineering and College of Engineering, BIC-ESAT
- Peking University
- Beijing 100871
- P. R. China
| | - Yusen Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Shaomin Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Junbo Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xiaoyu Meng
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Jian Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Jun Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Yi Man
- Beijing Research Institute of Chemical Industry
- Sinopec Group
- Beijing 100013
- P. R. China
| | - Xin Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Min Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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24
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Chen CS, Chen TC, Wu HC, Wu JH, Lee JF. The influence of ceria on Cu/TiO2 catalysts to produce abundant oxygen vacancies and induce highly efficient CO oxidation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00792g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ce and Cu species deposited on TiO2 can apparently provide a higher turnover frequency rate and lower activation energy than the Cu/TiO2 catalyst and the Ce and Cu species on SiO2 catalysts.
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Affiliation(s)
- Ching-Shiun Chen
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
- Department of Pathology
| | - Tse-Ching Chen
- Department of Pathology
- Chang Gung Memorial Hospital Linkou
- Taoyuan City 33302
- Republic of China
| | - Hung-Chi Wu
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
| | - Jia-Huang Wu
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Republic of China
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25
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Brandt AJ, Maddumapatabandi TD, Shakya DM, Xie K, Seuser GS, Farzandh S, Chen DA. Water-gas shift activity on Pt-Re surfaces and the role of the support. J Chem Phys 2019; 151:234714. [DOI: 10.1063/1.5128735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Amy J. Brandt
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | | | - Deependra M. Shakya
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Kangmin Xie
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Grant S. Seuser
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Sharfa Farzandh
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Donna A. Chen
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
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26
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Konsolakis M, Lykaki M, Stefa S, Carabineiro SAC, Varvoutis G, Papista E, Marnellos GE. CO 2 Hydrogenation over Nanoceria-Supported Transition Metal Catalysts: Role of Ceria Morphology (Nanorods versus Nanocubes) and Active Phase Nature (Co versus Cu). NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1739. [PMID: 31817667 PMCID: PMC6955880 DOI: 10.3390/nano9121739] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/28/2019] [Accepted: 12/02/2019] [Indexed: 11/28/2022]
Abstract
In this work we report on the combined impact of active phase nature (M: Co or Cu) and ceria nanoparticles support morphology (nanorods (NR) or nanocubes (NC)) on the physicochemical characteristics and CO2 hydrogenation performance of M/CeO2 composites at atmospheric pressure. It was found that CO2 conversion followed the order: Co/CeO2 > Cu/CeO2 > CeO2, independently of the support morphology. Co/CeO2 catalysts demonstrated the highest CO2 conversion (92% at 450 °C), accompanied by 93% CH4 selectivity. On the other hand, Cu/CeO2 samples were very selective for CO production, exhibiting 52% CO2 conversion and 95% CO selectivity at 380 °C. The results obtained in a wide range of H2:CO2 ratios (1-9) and temperatures (200-500 °C) are reaching in both cases the corresponding thermodynamic equilibrium conversions, revealing the superiority of Co- and Cu-based samples in methanation and reverse water-gas shift (rWGS) reactions, respectively. Moreover, samples supported on ceria nanocubes exhibited higher specific activity (µmol CO2·m-2·s-1) compared to samples of rod-like shape, disclosing the significant role of support morphology, besides that of metal nature (Co or Cu). Results are interpreted on the basis of different textural and redox properties of as-prepared samples in conjunction to the different impact of metal entity (Co or Cu) on CO2 hydrogenation process.
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Affiliation(s)
- Michalis Konsolakis
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Maria Lykaki
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Sofia Stefa
- School of Production Engineering and Management, Technical University of Crete, GR-73100 Chania, Greece; (M.L.); (S.S.)
| | - Sόnia A. C. Carabineiro
- Laboratório de Catálise e Materiais (LCM), Laboratório Associado LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal
| | - Georgios Varvoutis
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, GR-57001 Thermi, Thessaloniki, Greece
| | - Eleni Papista
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
| | - Georgios E. Marnellos
- Department of Mechanical Engineering, University of Western Macedonia, GR-50100 Kozani, Greece; (G.V.); (E.P.); (G.E.M.)
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, GR-57001 Thermi, Thessaloniki, Greece
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27
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Henych J, Janoš P, Kormunda M, Tolasz J, Štengl V. Reactive adsorption of toxic organophosphates parathion methyl and DMMP on nanostructured Ti/Ce oxides and their composites. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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28
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Ammal SC, Heyden A. Understanding the Nature and Activity of Supported Platinum Catalysts for the Water–Gas Shift Reaction: From Metallic Nanoclusters to Alkali-Stabilized Single-Atom Cations. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01560] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Salai Cheettu Ammal
- Department of Chemical Engineering, University of South Carolina, 301 South Main Street, Columbia, South Carolina 29208, United States
| | - Andreas Heyden
- Department of Chemical Engineering, University of South Carolina, 301 South Main Street, Columbia, South Carolina 29208, United States
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29
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Carter JH, Shah PM, Nowicka E, Freakley SJ, Morgan DJ, Golunski S, Hutchings GJ. Enhanced Activity and Stability of Gold/Ceria-Titania for the Low-Temperature Water-Gas Shift Reaction. Front Chem 2019; 7:443. [PMID: 31259170 PMCID: PMC6587040 DOI: 10.3389/fchem.2019.00443] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 05/29/2019] [Indexed: 11/13/2022] Open
Abstract
Gold supported on ceria-zirconia is one of the most active low temperature water-gas shift catalysts reported to date but rapid deactivation occurs under reaction conditions. In this study, ceria-titania was evaluated as an alternative catalyst support. Materials of different Ce:Ti compositions were synthesized using a sol-gel methodology and gold was supported onto these using a deposition-precipitation method. They were then investigated as catalysts for the low-temperature water-gas shift reaction. Au/Ce0.2Ti0.8O2 exhibited superior activity and stability to a highly active, previously reported gold catalyst supported on ceria-zirconia. High activity and stability was found to be related to the support comprising a high number of oxygen defect sites and a high specific surface area. These properties were conducive to forming a highly active catalyst with well-dispersed Au species.
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Affiliation(s)
- James H Carter
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
| | - Parag M Shah
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
| | - Ewa Nowicka
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
| | | | - David J Morgan
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
| | - Stan Golunski
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
| | - Graham J Hutchings
- School of Chemistry, Cardiff Catalysis Institute, Cardiff University, Cardiff, United Kingdom
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30
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Plata JJ, Remesal ER, Graciani J, Márquez AM, Rodríguez JA, Sanz JF. Understanding the Photocatalytic Properties of Pt/CeO x /TiO 2 : Structural Effects on Electronic and Optical Properties. Chemphyschem 2019; 20:1624-1629. [PMID: 31046196 DOI: 10.1002/cphc.201900141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/10/2019] [Indexed: 01/12/2023]
Abstract
Ceria-titania interfaces play a crucial role in different chemical processes but are especially promising for the photocatalytic splitting of water using light in the visible wavelength region when Pt is added to the system. However, the complexity of this hierarchical structure hampers the study of the origin of its outstanding properties. In this article, the structural, electronic and optoelectronic properties of CeO2 /TiO2 systems containing 1D, 2D, and 3D particles of ceria are analyzed by means of density functional calculations. Adsorption sites and vacancy effects have been studied to model Pt adsorption. Density of states calculations and absorption spectra simulations explain the behavior of these systems. Finally, these models are used for the screening of other metals that can be combined with this heterostructure to potentially find more efficient water splitting photocatalysts.
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Affiliation(s)
- J J Plata
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla s/n, 41012, Sevilla
| | - E R Remesal
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla s/n, 41012, Sevilla
| | - Jesús Graciani
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla s/n, 41012, Sevilla
| | - A M Márquez
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla s/n, 41012, Sevilla
| | - J A Rodríguez
- Chemistry Department, Brookhaven National Laboratory Upton, New York, 11973-5000, United States
| | - Javier Fernández Sanz
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla s/n, 41012, Sevilla
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31
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Zhang S, Li D, Liu Y, Zhang Y, Wu Q. Zirconium Doped Precipitated Fe-Based Catalyst for Fischer–Tropsch Synthesis to Light Olefins at Industrially Relevant Conditions. Catal Letters 2019. [DOI: 10.1007/s10562-019-02775-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Nolan M. Adsorption of CO 2 on Heterostructures of Bi 2O 3 Nanocluster-Modified TiO 2 and the Role of Reduction in Promoting CO 2 Activation. ACS OMEGA 2018; 3:13117-13128. [PMID: 31458032 PMCID: PMC6644796 DOI: 10.1021/acsomega.8b01957] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 08/16/2018] [Indexed: 06/10/2023]
Abstract
The capture and conversion of CO2 are of significant importance in enabling the production of sustainable fuels, contributing to alleviating greenhouse gas emissions. While there are a number of key steps required to convert CO2, the initial step of adsorption and activation by the catalyst is critical. Well-known metal oxides such as oxidized TiO2 or CeO2 are unable to promote this step. In addressing this difficult problem, a recent experimental work shows the potential for bismuth-containing materials to adsorb and convert CO2, the origin of which is attributed to the role of the bismuth lone pair. In this paper, we present density functional theory (DFT) simulations of enhanced CO2 adsorption on heterostructures composed of extended TiO2 rutile (110) and anatase (101) surfaces modified with Bi2O3 nanoclusters, highlighting in particular the role of heterostructure reduction in activating CO2. These heterostructures show low coordinated Bi sites in the nanoclusters and a valence band edge that is dominated by Bi-O states, typical of the Bi3+ lone pair. The reduction of Bi2O3-TiO2 heterostructures can be facile and produces reduced Bi2+ and Ti3+ species. The interaction of CO2 with this electron-rich, reduced system can produce CO directly, reoxidizing the heterostructure, or form an activated carboxyl species (CO2 -) through electron transfer from the reduced heterostructure to CO2. The oxidized Bi2O3-TiO2 heterostructures can adsorb CO2 in carbonate-like adsorption modes, with moderately strong adsorption energies. The hydrogenation of the nanocluster and migration to adsorbed CO2 is feasible with H-migration barriers less than 0.7 eV, but this forms a stable COOH intermediate rather than breaking C-O bonds or producing formate. These results highlight that a reducible metal oxide heterostructure composed of a semiconducting metal oxide modified with suitable metal oxide nanoclusters can activate CO2, potentially overcoming the difficulties associated with the difficult first step in CO2 conversion.
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33
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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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34
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Natile MM, Carlotto S, Bizzotto G, Vittadini A, Glisenti A. Small Copper Clusters Supported on SrTiO
3
: An Experimental and Theoretical Study. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marta M. Natile
- Istituto di Chimica della Materia Condensata e di Tecnologie per l′Energia Consiglio Nazionale delle Ricerche, ICMATE‐CNR Via F. Marzolo 1 35131 Padova Italy
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via F. Marzolo 1 35151 Padova Italy
| | - Silvia Carlotto
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via F. Marzolo 1 35151 Padova Italy
| | - Gianmaria Bizzotto
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via F. Marzolo 1 35151 Padova Italy
| | - Andrea Vittadini
- Istituto di Chimica della Materia Condensata e di Tecnologie per l′Energia Consiglio Nazionale delle Ricerche, ICMATE‐CNR Via F. Marzolo 1 35131 Padova Italy
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via F. Marzolo 1 35151 Padova Italy
| | - Antonella Glisenti
- Istituto di Chimica della Materia Condensata e di Tecnologie per l′Energia Consiglio Nazionale delle Ricerche, ICMATE‐CNR Via F. Marzolo 1 35131 Padova Italy
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via F. Marzolo 1 35151 Padova Italy
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35
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Hook A, Nuber TP, Celik FE. Density Functional Theory Investigation of the Role of Cocatalytic Water in Methane Steam Reforming over Anatase TiO 2 (101). Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00944] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Rhatigan S, Nolan M. Impact of surface hydroxylation in MgO-/SnO-nanocluster modified TiO2 anatase (101) composites on visible light absorption, charge separation and reducibility. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.11.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Hook A, Celik FE. Density Functional Theory Investigation of the Role of Cocatalytic Water in the Water Gas Shift Reaction over Anatase TiO2 (101). Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00532] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alec Hook
- Department of Chemical and Biochemical Engineering Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
| | - Fuat E. Celik
- Department of Chemical and Biochemical Engineering Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
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38
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Li S, Cai J, Wu X, Liu B, Chen Q, Li Y, Zheng F. TiO 2@Pt@CeO 2 nanocomposite as a bifunctional catalyst for enhancing photo-reduction of Cr (VI) and photo-oxidation of benzyl alcohol. JOURNAL OF HAZARDOUS MATERIALS 2018; 346:52-61. [PMID: 29247954 DOI: 10.1016/j.jhazmat.2017.12.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 11/25/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
An solar-light-driven and bifunctional photocatalyst was designed for photo-reduction of Cr(VI) and selective photo-oxidation of benzyl alcohol into benzaldehyde in the presence of water under ambient conditions. Double-shelled and sandwiched TiO2@Pt@CeO2 hollow spheres were prepared by using functionalized polystyrene spheres, sol-gel, hydrothermal reaction, and calcination. The Pt nanoparticles (NPs) were controllably loaded between the TiO2 shell and CeO2 shell. Under solar-light irradiation, the photo-reduction rate of Cr(VI) (μmol h-1) was in the order of TiO2@Pt@CeO2 (1.901) > TiO2@CeO2 (1.424) > TiO2 (1.040) > CeO2 (0.992). Among the above-mentioned photocatalysts, the conversion rate of benzyl alcohol for TiO2@Pt@CeO2 was also the best. These results were attributed to the combination of TiO2 and CeO2 as photocatalyst and oxygen buffer, the double-shelled and sandwiched nanostructure, and the addition of Pt NPs as cocatalyst and electron trap site, which could store and shuttle photo-generated electrons, reduce the recombination of the electron-hole, and then enhance photo-generation of active radicals. This conclusion was verified by the electron paramagnetic resonance (EPR) spectroscopy. Considering the versatile combination of photocatalyst, oxygen buffer and cocatalyst, this work could provide new insights into the design of high-performance bifunctional photocatalysts for heavy metal removal and selective synthesis.
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Affiliation(s)
- Shunxing Li
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, PR China.
| | - Jiabai Cai
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China; College of the Environment and Ecology, Xiamen University, Xiamen, 361102, PR China
| | - Xueqing Wu
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China
| | - Biwen Liu
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China
| | - Qiaoying Chen
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China
| | - Yuehai Li
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China
| | - Fengying Zheng
- College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, PR China; Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, PR China
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39
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Boundary role of Nano-Pd catalyst supported on ceria and the approach of promoting the boundary effect. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2017.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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40
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Yu H, Zhong S, Zhu B, Huang W, Zhang S. Synthesis and CO Oxidation Activity of 1D Mixed Binary Oxide CeO 2-LaO x Supported Gold Catalysts. NANOSCALE RESEARCH LETTERS 2017; 12:579. [PMID: 29098472 PMCID: PMC5668222 DOI: 10.1186/s11671-017-2352-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 10/24/2017] [Indexed: 06/07/2023]
Abstract
One-dimensional (1D) Ce-La nanorods with different La contents (Ce and La in the molar ratio of 1:0, 3:1, 1:1, 1:3, and 0:1) were synthesized by hydrothermal process. Au/Ce-La nanorod catalysts were obtained by a modified deposition-precipitation method. The samples were characterized by N2 adsorption-desorption (BET), ICP, X-ray diffraction (XRD), SEM, TEM, EDX, X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), and temperature-programmed reduction (H2-TPR). It revealed that La existed as LaO x in the 1D nanorods. The catalysis results demonstrated that the mixed binary Ce-La nanorod oxides could be a good support for gold catalysts. The contents of La had an important influence on the catalytic performance of Au/Ce-La nanorod catalysts. Among the catalysts, when the Ce/La molar ratio was 3:1, the 1.0%Au/Ce0.75-La0.25 nanorods pretreated at 300 °C showed the best activity among the catalysts for CO oxidation, which could convert CO completely at 30 °C. The catalysts also performed high temperature resistance and good stability for CO oxidation at the reaction temperatures of 40, 70, and 200 °C.
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Affiliation(s)
- Huanhuan Yu
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Siyuan Zhong
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Baolin Zhu
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Weiping Huang
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Shoumin Zhang
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), and TKL of Metal and Molecule Based Material Chemistry, Nankai University, Tianjin, 300071, People's Republic of China.
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41
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Guo Q, Zhang Q, Wang H, Liu Z, Zhao Z. Unraveling the role of surface property in the photoreduction performance of CO 2 and H 2 O catalyzed by the modified ZnO. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.04.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Liu B, Jiang T, Zheng H, Dissanayke S, Song W, Federico A, Suib SL, He J. Nanoengineering of aggregation-free and thermally-stable gold nanoparticles in mesoporous frameworks. NANOSCALE 2017; 9:6380-6390. [PMID: 28452385 DOI: 10.1039/c7nr01988b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Loading catalytically active, aggregation-free and thermally stable metal nanoparticles (NPs) on a high surface area support represents a major interest in heterogeneous catalysis. Current synthetic approaches to these hybrid catalysts, however, still lack controllability in the thermal stability of metal NPs, particularly at high temperatures in the absence of organic ligands. We herein report a facile "co-assembly" methodology to prepare aggregation-free, ligand-free and thermally stable mesoporous hybrid nanocatalysts of metal-oxides and metal-carbons. Immobilization of catalytically active gold NPs (AuNPs) within high surface area mesoporous frameworks was achieved via the polymer-directed co-assembly of chemically and structurally equivalent Pluronic P-123 and poly(ethylene oxide)-modified metallic gold NPs (AuNP-PEO) as co-structure-directing-agents. The in situ immobilization of AuNPs partially embedded into periodically ordered mesoporous frameworks imposed a three-dimensional "nanoconfinement" effect and essentially enhanced the long-term thermal stability of AuNPs up to 800 °C. The mesoporous hybrids retained a high surface accessibility of AuNPs and they had a fantastic high-temperature catalytic durability (>130 h at 375 °C) confirmed by two model catalytic reactions, including aerobic oxidation of benzyl alcohol and CO oxidation, respectively. Our results may offer a new realm of possibilities for the rational applications of thermally stable nanocatalysts in renewable energy technology and high-temperature catalysis.
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Affiliation(s)
- Ben Liu
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.
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43
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Pike SD, White ER, Regoutz A, Sammy N, Payne DJ, Williams CK, Shaffer MSP. Reversible Redox Cycling of Well-Defined, Ultrasmall Cu/Cu 2O Nanoparticles. ACS NANO 2017; 11:2714-2723. [PMID: 28286946 DOI: 10.1021/acsnano.6b07694] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Exceptionally small and well-defined copper (Cu) and cuprite (Cu2O) nanoparticles (NPs) are synthesized by the reaction of mesitylcopper(I) with either H2 or air, respectively. In the presence of substoichiometric quantities of ligands, namely, stearic or di(octyl)phosphinic acid (0.1-0.2 equiv vs Cu), ultrasmall nanoparticles are prepared with diameters as low as ∼2 nm, soluble in a range of solvents. The solutions of Cu NPs undergo quantitative oxidation, on exposure to air, to form Cu2O NPs. The Cu2O NPs can be reduced back to Cu(0) NPs using accessible temperatures and low pressures of hydrogen (135 °C, 3 bar H2). This striking reversible redox cycling of the discrete, solubilized Cu/Cu(I) colloids was successfully repeated over 10 cycles, representing 19 separate reactions. The ligands influence the evolution of both composition and size of the nanoparticles, during synthesis and redox cycling, as explored in detail using vacuum-transfer aberration-corrected transmission electron microscopy, X-ray photoelectron spectroscopy, and visible spectroscopy.
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Affiliation(s)
- Sebastian D Pike
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Edward R White
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Anna Regoutz
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Nicholas Sammy
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - David J Payne
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Charlotte K Williams
- Department of Chemistry, Oxford University, Chemistry Research Laboratory , 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Milo S P Shaffer
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
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44
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Long R, Prezhdo OV, Fang W. Nonadiabatic charge dynamics in novel solar cell materials. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2017. [DOI: 10.1002/wcms.1305] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education Beijing Normal University Beijing P.R. China
| | - Oleg V. Prezhdo
- Department of Chemistry University of Southern California Los Angeles CA USA
| | - Weihai Fang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education Beijing Normal University Beijing P.R. China
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45
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Zhao G, Yang F, Chen Z, Liu Q, Ji Y, Zhang Y, Niu Z, Mao J, Bao X, Hu P, Li Y. Metal/oxide interfacial effects on the selective oxidation of primary alcohols. Nat Commun 2017; 8:14039. [PMID: 28098146 PMCID: PMC5253635 DOI: 10.1038/ncomms14039] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 11/23/2016] [Indexed: 12/26/2022] Open
Abstract
A main obstacle in the rational development of heterogeneous catalysts is the difficulty in identifying active sites. Here we show metal/oxide interfacial sites are highly active for the oxidation of benzyl alcohol and other industrially important primary alcohols on a range of metals and oxides combinations. Scanning tunnelling microscopy together with density functional theory calculations on FeO/Pt(111) reveals that benzyl alcohol enriches preferentially at the oxygen-terminated FeO/Pt(111) interface and undergoes readily O–H and C–H dissociations with the aid of interfacial oxygen, which is also validated in the model study of Cu2O/Ag(111). We demonstrate that the interfacial effects are independent of metal or oxide sizes and the way by which the interfaces were constructed. It inspires us to inversely support nano-oxides on micro-metals to make the structure more stable against sintering while the number of active sites is not sacrificed. The catalyst lifetime, by taking the inverse design, is thereby significantly prolonged. Metals supported on metal oxides are common heterogeneous catalysts. Here the authors show that metal/oxide interfacial sites are highly active for alcohol oxidation—independent of the particle sizes—and use this information to design inverse oxide-on-metal particles with high activity and stability.
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Affiliation(s)
- Guofeng Zhao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Fan Yang
- State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zongjia Chen
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China.,School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast BT9 5AG, UK
| | - Qingfei Liu
- State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongjun Ji
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yi Zhang
- State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiqiang Niu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Junjie Mao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, CAS Center for Excellence in Nanoscience, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Peijun Hu
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China.,School of Chemistry and Chemical Engineering, The Queen's University of Belfast, Belfast BT9 5AG, UK
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing 100084, China.,Collaborative Innovation Center for Nanomaterial Science and Engineering, Tsinghua University, Beijing 100084, China
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46
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Kim HY, Hybertsen MS, Liu P. Controlled Growth of Ceria Nanoarrays on Anatase Titania Powder: A Bottom-up Physical Picture. NANO LETTERS 2017; 17:348-354. [PMID: 28073258 DOI: 10.1021/acs.nanolett.6b04218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The leading edge of catalysis research motivates physical understanding of the growth of nanoscale oxide structures on different supporting oxide materials that are themselves also nanostructured. This research opens up for consideration a diverse range of facets on the support material, versus the single facet typically involved in wide-area growth of thin films. Here, we study the growth of ceria nanoarchitectures on practical anatase titania powders as a showcase inspired by recent experiments. Density functional theory (DFT)-based methods are employed to characterize and rationalize the broad array of low energy nanostructures that emerge. Using a bottom-up approach, we are able to identify and characterize the underlying mechanisms for the facet-dependent growth of various ceria motifs on anatase titania based on formation energy. These motifs include 0D clusters, 1D chains, 2D plates, and 3D nanoparticles. The ceria growth mode and morphology are determined by the interplay of several factors including the role of the common cation valence, the interface template effect for different facets of the anatase support, enhanced ionic binding for more compact ceria motifs, and the local structural flexibility of oxygen ions in bridging the interface between anatase and ceria structures.
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Affiliation(s)
- Hyun You Kim
- Department of Materials Science and Engineering, Chungnam National University , 99-Daehakro, Daejeon 34134, Republic of Korea
| | - Mark S Hybertsen
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Ping Liu
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
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47
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Rodriguez JA, Grinter DC, Liu Z, Palomino RM, Senanayake SD. Ceria-based model catalysts: fundamental studies on the importance of the metal–ceria interface in CO oxidation, the water–gas shift, CO2 hydrogenation, and methane and alcohol reforming. Chem Soc Rev 2017; 46:1824-1841. [DOI: 10.1039/c6cs00863a] [Citation(s) in RCA: 242] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Model metal/ceria and ceria/metal catalysts have shown to be excellent systems for studying fundamental phenomena linked to the operation of technical catalysts.
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Affiliation(s)
- José A. Rodriguez
- Chemistry Department
- Brookhaven National Laboratory
- NY 11973
- USA
- Department of Chemistry
| | | | - Zongyuan Liu
- Department of Chemistry
- State University of New York (SUNY)
- NY 11749
- USA
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48
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Iyemperumal SK, Deskins NA. Activation of CO2 by supported Cu clusters. Phys Chem Chem Phys 2017; 19:28788-28807. [DOI: 10.1039/c7cp05718k] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
CO2 forms a bent, negative anion upon adsorption near a Cu3 cluster supported on TiO2.
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Affiliation(s)
| | - N. Aaron Deskins
- Department of Chemical Engineering
- Worcester Polytechnic Institute
- Worcester
- USA
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49
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Importance of metal-oxide interfaces in heterogeneous catalysis: A combined DFT, microkinetic, and experimental study of water-gas shift on Au/MgO. J Catal 2017. [DOI: 10.1016/j.jcat.2016.11.008] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Gu XK, Huang CQ, Li WX. First-principles study of single transition metal atoms on ZnO for the water gas shift reaction. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00704c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single Ni atom substituted on a ZnO surface is a promising catalyst for the water gas shift reaction.
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Affiliation(s)
- Xiang-Kui Gu
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Dalian 116023
| | - Chuan-Qi Huang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Dalian 116023
| | - Wei-Xue Li
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Dalian 116023
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