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Vahidzadeh E, Zeng S, Manuel AP, Riddell S, Kumar P, Alam KM, Shankar K. Asymmetric Multipole Plasmon-Mediated Catalysis Shifts the Product Selectivity of CO 2 Photoreduction toward C 2+ Products. ACS APPLIED MATERIALS & INTERFACES 2021; 13:7248-7258. [PMID: 33539093 DOI: 10.1021/acsami.0c21067] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cu/TiO2 is a well-known photocatalyst for the photocatalytic transformation of CO2 into methane. The formation of C2+ products such as ethane and ethanol rather than methane is more interesting due to their higher energy density and economic value, but the formation of C-C bonds is currently a major challenge in CO2 photoreduction. In this context, we report the dominant formation of a C2 product, namely, ethane, from the gas-phase photoreduction of CO2 using TiO2 nanotube arrays (TNTAs) decorated with large-sized (80-200 nm) Ag and Cu nanoparticles without the use of a sacrificial agent or hole scavenger. Isotope-labeled mass spectrometry was used to verify the origin and identity of the reaction products. Under 2 h AM1.5G 1-sun illumination, the total rate of hydrocarbon production (methane + ethane) was highest for AgCu-TNTA with a total CxH2x+2 rate of 23.88 μmol g-1 h-1. Under identical conditions, the CxH2x+2 production rates for Ag-TNTA and Cu-TNTA were 6.54 and 1.39 μmol g-1 h-1, respectively. The ethane selectivity was the highest for AgCu-TNTA with 60.7%, while the ethane selectivity was found to be 15.9 and 10% for the Ag-TNTA and Cu-TNTA, respectively. Adjacent adsorption sites in our photocatalyst develop an asymmetric charge distribution due to quadrupole resonances in large metal nanoparticles and multipole resonances in Ag-Cu heterodimers. Such an asymmetric charge distribution decreases adsorbate-adsorbate repulsion and facilitates C-C coupling of reaction intermediates, which otherwise occurs poorly in TNTAs decorated with small metal nanoparticles.
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Affiliation(s)
- Ehsan Vahidzadeh
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
| | - Sheng Zeng
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
| | - Ajay P Manuel
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
| | - Saralyn Riddell
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
| | - Pawan Kumar
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
| | - Kazi M Alam
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
- National Research Council Nanotechnology Research Centre, 11421 Saskatchewan Dr NW, Edmonton, AB T6G 2M9, Canada
| | - Karthik Shankar
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 Street, Edmonton, AB T6G 1H9, Canada
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Shen X, Luo D, Ma C, Suo H, Yan L, Zhang T, Liu X, Wen X, Li Y, Yang Y. Carburized cobalt catalyst for the Fischer–Tropsch synthesis. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00654a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Catalysts with Co, Co3C, and Co2C phases are synthesized by controlling the carburization time. The catalyst with Co3C phase exhibits the highest activity in FTS reaction. DFT calculations reveal the high intrinsic activity of Co3C.
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Affiliation(s)
- Xianfeng Shen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Dan Luo
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chenwei Ma
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - HaiYun Suo
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
| | - Lai Yan
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
| | - Tianfu Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
- SynCat@Beijing, Synfuels China Co., Ltd., Huairou District, Beijing 101407, PR China
| | - Xi Liu
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
- In situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, PR China
| | - Xiaodong Wen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
| | - Yongwang Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
| | - Yong Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
- National Energy Center for Coal to Liquids, Synfuels China Co., Ltd., Huairou District, Beijing, 101400, PR China
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Zijlstra B, Broos RJP, Chen W, Bezemer GL, Filot IAW, Hensen EJM. The Vital Role of Step-Edge Sites for Both CO Activation and Chain Growth on Cobalt Fischer–Tropsch Catalysts Revealed through First-Principles-Based Microkinetic Modeling Including Lateral Interactions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02420] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bart Zijlstra
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Robin J. P. Broos
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Wei Chen
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - G. Leendert Bezemer
- Shell Global Solutions International B.V., Grasweg 31, 1031 HW Amsterdam, The Netherlands
| | - Ivo A. W. Filot
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
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