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Yang Z, Peng L, Yang L, Fu M, Ye D, Chen P. Low-temperature NH 3 abatement via selective oxidation over a supported copper catalyst with high Cu + abundance. J Environ Sci (China) 2024; 143:12-22. [PMID: 38644010 DOI: 10.1016/j.jes.2023.05.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/25/2023] [Accepted: 05/31/2023] [Indexed: 04/23/2024]
Abstract
Selective catalytic NH3-to-N2 oxidation (NH3-SCO) is highly promising for abating NH3 emissions slipped from stationary flue gas after-treatment devices. Its practical application, however, is limited by the non-availability of low-cost catalysts with high activity and N2 selectivity. Here, using defect-rich nitrogen-doped carbon nanotubes (NCNT-AW) as the support, we developed a highly active and durable copper-based NH3-SCO catalyst with a high abundance of cuprous (Cu+) sites. The obtained Cu/NCNT-AW catalyst demonstrated outstanding activity with a T50 (i.e. the temperature to reach 50% NH3 conversion) of 174°C in the NH3-SCO reaction, which outperformed not only the Cu catalyst supported on N-free O-functionalized CNTs (OCNTs) or NCNT with less surface defects, but also those most active Cu catalysts in open literature. Reaction kinetics measurements and temperature-programmed surface reactions using NH3 as a probe molecule revealed that the NH3-SCO reaction on Cu/NCNT-AW follows an internal selective catalytic reaction (i-SCR) route involving nitric oxide (NO) as a key intermediate. According to mechanistic investigations by X-ray photoelectron spectroscopy, Raman spectroscopy, and X-ray absorption spectroscopy, the superior NH3-SCO performance of Cu/NCNT-AW originated from a synergy of surface defects and N-dopants. Specifically, surface defects promoted the anchoring of CuO nanoparticles on N-containing sites and, thereby, enabled efficient electron transfer from N to CuO, increasing significantly the fraction of SCR-active Cu+ sites in the catalyst. This study puts forward a new idea for manipulating and utilizing the interplay of defects and N-dopants on carbon surfaces to fabricate Cu+-rich Cu catalysts for efficient abatement of slip NH3 emissions via selective oxidation.
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Affiliation(s)
- Zhiming Yang
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Lin Peng
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Leneng Yang
- Guangdong Chengyi Environmental Technology Corp., Shaoguan 512158, China
| | - Mingli Fu
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Daiqi Ye
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Peirong Chen
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
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2
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Liu Z, Xu H, Fan Y, Huang W, Yu F, Qu Z, Yan N. Asymmetric Coordination of Single-Atom Ru Sites Achieves Efficient N(sp 3)-H Dehydrogenation Catalysis for Ammonia Oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:10717-10728. [PMID: 38847549 DOI: 10.1021/acs.est.4c03294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2024]
Abstract
Ruthenium single-atom catalysts have great potential in ammonia-selective catalytic oxidation (NH3-SCO); however, the stable sp3 hybrid orbital of NH3 molecules makes N(sp3)-H dissociation a challenge for conventional symmetrical metallic oxide catalysts. Herein, we propose a heterogeneous interface reverse atom capture strategy to construct Ru with unique asymmetric Ru1N2O1 coordination. Ru1N2O1/CeO2 exhibits intrinsic low-temperature conversion (T100 at 160 °C) compared to symmetric coordinated Ru-based (280 °C), Ir-based (220 °C), and Pt-based (200 °C) catalysts, and the TOF is 65.4 times that of Ag-based catalysts. The experimental and theoretical studies show that there is a strong d-p orbital interaction between Ru and N atoms, which not only enhances the adsorption of ammonia at the Ru1N2O1 position but also optimizes the electronic configuration of Ru. Furthermore, the affinity of Ru1N2O1/CeO2 to water is significantly weaker than that of conventional catalysts (the binding energy of the Pd3Au1 catalyst is -1.19 eV, but it is -0.39 eV for our material), so it has excellent water resistance. Finally, the N(sp3)-H activation of NH3 requires the assistance of surface reactive oxygen species, but we found that asymmetric Ru1N2O1 can directly activate the N(sp3)-H bond without the involvement of surface reactive oxygen species. This study provides a novel principle for the rational design of the proximal coordination of active sites to achieve its optimal catalytic activity in single-atom catalysis.
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Affiliation(s)
- Zhisong Liu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haomiao Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yurui Fan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenjun Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Feng Yu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Zan Qu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Naiqiang Yan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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3
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Liao Y, Liu Z, Li Z, Gao G, Ji L, Xu H, Huang W, Qu Z, Yan N. The Unique CO Activation Effects for Boosting NH 3 Selective Catalytic Oxidation over CuO x-CeO 2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10402-10411. [PMID: 35815997 DOI: 10.1021/acs.est.2c02612] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Slip NH3 is a priority pollutant of concern to be removed in various flue gases with NOx and CO after denitrification using NH3-SCR or NH3-SNCR, and the simultaneous catalytic removal of NH3 and CO has become one of the new topics in the deep treatment of such flue gases. Synergistic catalytic oxidation of CO and NH3 appears to be a promising method but still has many challenges. Due to the competition for active oxidizing species, CO was supposed to hinder the NH3 selective catalytic oxidation (NH3-SCO). However, it is first found that CO could significantly promote NH3-SCO over the CuOx-CeO2 catalyst. The NH3 conversion rates increased linearly with CO concentrations in the range of 180-300 °C. Specifically, it accelerated by 2.8 times with 10,000 ppm CO inflow at 220 °C. Mechanism studies found that the Cu-O-Ce solid solution was more active for CO oxidation, while the CuOx species facilitated the NH3 dehydrogenation and mitigated the competition of NH3 and CO, further stabilizing the promotion effects. Gaseous CO boosted the generation of active isolated oxygen atoms (Oi) by actuating the Cu+/Cu2+ redox cycle. The enriched Oi facilitated oxidation of NH3 to NO and was conducive to the NH3-SCO via the i-SCR approach. This study tapped the potential of CO for promoting simultaneous catalytic oxidation of coexisting pollutants in the flue gas.
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Affiliation(s)
- Yong Liao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhisong Liu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zihao Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Guanqun Gao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Leipeng Ji
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Haomiao Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wenjun Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zan Qu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Naiqiang Yan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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4
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Li W, Liu Z, Yu F, Pan K, Zhao H, Gao F, Zhou M, Dai B, Dan J. CuCeO x/VMT powder and monolithic catalyst for CO-selective catalytic reduction of NO with CO. NEW J CHEM 2022. [DOI: 10.1039/d2nj00047d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction path of a CuCe/VMT(M) catalyst in the CO-SCR reaction at N2O low temperature was found.
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Affiliation(s)
- Wenjian Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Zhisong Liu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Feng Yu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
- Carbon Neutralization and Environmental Catalytic Technology Laboratory, Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, China
| | - Keke Pan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Huanhuan Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Fei Gao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Mei Zhou
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Jianming Dan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
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5
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Jabłońska M. Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH 3-SCO). Molecules 2021; 26:6461. [PMID: 34770870 PMCID: PMC8587564 DOI: 10.3390/molecules26216461] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/17/2022] Open
Abstract
A recent development for selective ammonia oxidation into nitrogen and water vapor (NH3-SCO) over noble metal-based catalysts is covered in the mini-review. As ammonia (NH3) can harm human health and the environment, it led to stringent regulations by environmental agencies around the world. With the enforcement of the Euro VI emission standards, in which a limitation for NH3 emissions is proposed, NH3 emissions are becoming more and more of a concern. Noble metal-based catalysts (i.e., in the metallic form, noble metals supported on metal oxides or ion-exchanged zeolites, etc.) were rapidly found to possess high catalytic activity for NH3 oxidation at low temperatures. Thus, a comprehensive discussion of property-activity correlations of the noble-based catalysts, including Pt-, Pd-, Ag- and Au-, Ru-based catalysts is given. Furthermore, due to the relatively narrow operating temperature window of full NH3 conversion, high selectivity to N2O and NOx as well as high costs of noble metal-based catalysts, recent developments are aimed at combining the advantages of noble metals and transition metals. Thus, also a brief overview is provided about the design of the bifunctional catalysts (i.e., as dual-layer catalysts, mixed form (mechanical mixture), hybrid catalysts having dual-layer and mixed catalysts, core-shell structure, etc.). Finally, the general conclusions together with a discussion of promising research directions are provided.
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Affiliation(s)
- Magdalena Jabłońska
- Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
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6
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Wang D, Chen Q, Zhang X, Gao C, Wang B, Huang X, Peng Y, Li J, Lu C, Crittenden J. Multipollutant Control (MPC) of Flue Gas from Stationary Sources Using SCR Technology: A Critical Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:2743-2766. [PMID: 33569951 DOI: 10.1021/acs.est.0c07326] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The emission of gaseous pollutants from the combustion of fossil fuels is believed to be one of the most serious environmental challenges in the 21st century. Given the increasing demands of multipollutant control (MPC) via adsorption or catalysis technologies, such as NOx, volatile organic compounds (VOCs), heavy metals (Hg etc.), and ammonia, and considering investment costs and site space, the use of existing equipment, especially the selective catalytic reduction (SCR) system to convert pollutants into harmless or readily adsorbed substances, is one of the most practical approaches. Consequently, many efforts have been directed at achieving the simultaneous elimination of multipollutants in a SCR convertor, and this method has been widely used to mitigate the stationary emission of NOx. However, the development of active, selective, stable, and multifunctional catalysts/adsorbents suitable for large-scale commercialization remains challenging. Herein, we summarize recent works on the applications of SCR in MPC, describing the approaches of (i) SCR + VOCs oxidation, (ii) SCR + heavy metal control, and (iii) SCR + NH3 reduction to reveal that the efficiency of simultaneous elimination depends on catalyst composition and flue gas parameters. Furthermore, the synergistic promotional/inhibitory effects between SCR and VOCs/ammonia/heavy metal oxidations are shown to be the key to the feasibility of the reactions.
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Affiliation(s)
- Dong Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China
- Brook Byers Institute for Sustainable Systems and School of Civil and Environmental Engineering, Georgia Institute of Technology, 828 West Peachtree Street, Atlanta, Georgia 30332, United States
| | - Qiuzhun Chen
- National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Xiang Zhang
- National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Chuan Gao
- National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Bin Wang
- National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - Xu Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chunmei Lu
- National Engineering Laboratory for Coal-Burning Pollutants Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China
| | - John Crittenden
- Brook Byers Institute for Sustainable Systems and School of Civil and Environmental Engineering, Georgia Institute of Technology, 828 West Peachtree Street, Atlanta, Georgia 30332, United States
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7
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Yang Y, Tao Y, Wen W, An Q, Song S, Xu L. The key role of reduction process in enhancing the properties and catalytic performance of nanoscale copper particles anchored on three-dimensional macroporous graphene. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Wang Z, Li S, Zhang C, Wang D, Li X. The Opportunities and Challenges for NH3 Oxidation with 100% Conversion and Selectivity. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-020-09320-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Jabłońska M. Progress on Selective Catalytic Ammonia Oxidation (NH
3
‐SCO) over Cu−Containing Zeolite‐Based Catalysts. ChemCatChem 2020. [DOI: 10.1002/cctc.202000649] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Magdalena Jabłońska
- Institute of Chemical Technology Universität Leipzig Linnéstr. 3 04103 Leipzig Germany
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10
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Lan T, Zhao Y, Deng J, Zhang J, Shi L, Zhang D. Selective catalytic oxidation of NH3 over noble metal-based catalysts: state of the art and future prospects. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01137a] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The state of the art and future prospects for selective catalytic oxidation of NH3 over noble metal-based catalysts are presented.
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Affiliation(s)
- Tianwei Lan
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
| | - Yufei Zhao
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
| | - Jiang Deng
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
| | - Jianping Zhang
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
| | - Liyi Shi
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry
- Department of Chemistry
- Research Center of Nano Science and Technology
- College of Sciences
- Shanghai University
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11
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Zott MD, Garrido-Barros P, Peters JC. Electrocatalytic Ammonia Oxidation Mediated by a Polypyridyl Iron Catalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03499] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Michael D. Zott
- Division of Chemistry and Chemical Engineering, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Pablo Garrido-Barros
- Division of Chemistry and Chemical Engineering, California Institute of Technology (Caltech), Pasadena, California 91125, United States
| | - Jonas C. Peters
- Division of Chemistry and Chemical Engineering, California Institute of Technology (Caltech), Pasadena, California 91125, United States
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12
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Yang H, Liu W, Wang Z, Sun G. The Synthesis of SiO
2
@AuAg@CeO
2
Sandwich Structures with Enhanced Catalytic Performance Towards CO Oxidation. ChemistrySelect 2019. [DOI: 10.1002/slct.201901792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hongxiao Yang
- School of Chemistry and Chemical EngineeringUniversity of Jinan
| | - Wei Liu
- School of Water Conservancy and EnvironmentUniversity of Jinan
| | - Zhaohui Wang
- School of Chemistry and Chemical EngineeringUniversity of Jinan
| | - Guoxin Sun
- School of Chemistry and Chemical EngineeringUniversity of Jinan
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13
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Li D, Guo X, Song H, Sun T, Wan J. Preparation of RuO 2-TiO 2/Nano-graphite composite anode for electrochemical degradation of ceftriaxone sodium. JOURNAL OF HAZARDOUS MATERIALS 2018; 351:250-259. [PMID: 29550559 DOI: 10.1016/j.jhazmat.2018.03.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Graphite-like material is widely used for preparing various electrodes for wastewater treatment. To enhance the electrochemical degradation efficiency of Nano-graphite (Nano-G) anode, RuO2-TiO2/Nano-G composite anode was prepared through the sol-gel method and hot-press technology. RuO2-TiO2/Nano-G composite was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and N2 adsorption-desorption. Results showed that RuO2, TiO2 and Nano-G were composited successfully, and RuO2 and TiO2 nanoparticles were distributed uniformly on the surface of Nano-G sheet. Specific surface area of RuO2-TiO2/Nano-G composite was higher than that of TiO2/Nano-G composite and Nano-G. Electrochemical performances of RuO2-TiO2/Nano-G anode were investigated by cyclic voltammetry, electrochemical impedance spectroscopy. RuO2-TiO2/Nano-G anode was applied to electrochemical degradation of ceftriaxone. The generation of hydroxyl radical (OH) was measured. Results demonstrated that RuO2-TiO2/Nano-G anode displayed enhanced electrochemical degradation efficiency towards ceftriaxone and yield of OH, which is derived from the synergetic effect between RuO2, TiO2 and Nano-G, which enhance the specific surface area, improve the electrochemical oxidation activity and lower the charge transfer resistance. Besides, the possible degradation intermediates and pathways of ceftriaxone sodium were identified. This study may provide a viable and promising prospect for RuO2-TiO2/Nano-G anode towards effective electrochemical degradation of antibiotics from wastewater.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; School of Chemistry, Chemical Engineering and Materials, Department of Environmental Science and Engineering, Heilongjiang University, Harbin 150080, China.
| | - Xiaolei Guo
- School of Chemistry, Chemical Engineering and Materials, Department of Environmental Science and Engineering, Heilongjiang University, Harbin 150080, China
| | - Haoran Song
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Tianyi Sun
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jiafeng Wan
- School of Chemistry, Chemical Engineering and Materials, Department of Environmental Science and Engineering, Heilongjiang University, Harbin 150080, China
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14
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Chakraborty D, Damsgaard CD, Silva H, Conradsen C, Olsen JL, Carvalho HWP, Mutz B, Bligaard T, Hoffmann MJ, Grunwaldt JD, Studt F, Chorkendorff I. Bottom-Up Design of a Copper-Ruthenium Nanoparticulate Catalyst for Low-Temperature Ammonia Oxidation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703468] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Debasish Chakraborty
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Christian Danvad Damsgaard
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
- Center for Electron Nanoscopy; Technical University of Denmark; Fysikvej, Building 307 2800 Kgs. Lyngby Denmark
| | - Hugo Silva
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Christian Conradsen
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Jakob Lind Olsen
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Hudson W. P. Carvalho
- Centro de Energia Nuclear na Agricultura; Universidade de S. Paulo; P.O. Box 96 13400-970 Piracicaba SP Brazil
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Benjamin Mutz
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | | | | | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Felix Studt
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Ib Chorkendorff
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
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15
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Chakraborty D, Damsgaard CD, Silva H, Conradsen C, Olsen JL, Carvalho HWP, Mutz B, Bligaard T, Hoffmann MJ, Grunwaldt JD, Studt F, Chorkendorff I. Bottom-Up Design of a Copper-Ruthenium Nanoparticulate Catalyst for Low-Temperature Ammonia Oxidation. Angew Chem Int Ed Engl 2017; 56:8711-8715. [DOI: 10.1002/anie.201703468] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Debasish Chakraborty
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Christian Danvad Damsgaard
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
- Center for Electron Nanoscopy; Technical University of Denmark; Fysikvej, Building 307 2800 Kgs. Lyngby Denmark
| | - Hugo Silva
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Christian Conradsen
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Jakob Lind Olsen
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
| | - Hudson W. P. Carvalho
- Centro de Energia Nuclear na Agricultura; Universidade de S. Paulo; P.O. Box 96 13400-970 Piracicaba SP Brazil
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Benjamin Mutz
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | | | | | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Felix Studt
- Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT); Engesserstr. 20 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Ib Chorkendorff
- SurfCat, Department of Physics; Technical University of Denmark; Fysikvej, Building 311 2800 Kgs. Lyngby Denmark
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Liu T, Qian J, Yao Y, Shi Z, Han L, Liang C, Li B, Dong L, Fan M, Zhang L. Research on SCR of NO with CO over the Cu0.1La0.1Ce0.8O mixed-oxide catalysts: Effect of the grinding. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.molcata.2016.12.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chen S, Li L, Hu W, Huang X, Li Q, Xu Y, Zuo Y, Li G. Anchoring High-Concentration Oxygen Vacancies at Interfaces of CeO(2-x)/Cu toward Enhanced Activity for Preferential CO Oxidation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:22999-3007. [PMID: 26444246 DOI: 10.1021/acsami.5b06302] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Catalysts are urgently needed to remove the residual CO in hydrogen feeds through selective oxidation for large-scale applications of hydrogen proton exchange membrane fuel cells. We herein propose a new methodology that anchors high concentration oxygen vacancies at interface by designing a CeO2-x/Cu hybrid catalyst with enhanced preferential CO oxidation activity. This hybrid catalyst, with more than 6.1% oxygen vacancies fixed at the favorable interfacial sites, displays nearly 100% CO conversion efficiency in H2-rich streams over a broad temperature window from 120 to 210 °C, strikingly 5-fold wider than that of conventional CeO2/Cu (i.e., CeO2 supported on Cu) catalyst. Moreover, the catalyst exhibits a highest cycling stability ever reported, showing no deterioration after five cycling tests, and a super long-time stability beyond 100 h in the simulated operation environment that involves CO2 and H2O. On the basis of an arsenal of characterization techniques, we clearly show that the anchored oxygen vacancies are generated as a consequence of electron donation from metal copper atoms to CeO2 acceptor and the subsequent reverse spillover of oxygen induced by electron transfer in well controlled nanoheterojunction. The anchored oxygen vacancies play a bridging role in electron capture or transfer and drive molecule oxygen into active oxygen species to interact with the CO molecules adsorbed at interfaces, thus leading to an excellent preferential CO oxidation performance. This study opens a window to design a vast number of high-performance metal-oxide hybrid catalysts via the concept of anchoring oxygen vacancies at interfaces.
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Affiliation(s)
- Shaoqing Chen
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Liping Li
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Wanbiao Hu
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Xinsong Huang
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Qi Li
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Yangsen Xu
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Ying Zuo
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
| | - Guangshe Li
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002, People's Republic of China
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Jabłońska M. TPR study and catalytic performance of noble metals modified Al2O3, TiO2 and ZrO2 for low-temperature NH3-SCO. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.07.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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19
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Yang H, Pan Y, Xu Y, Yang Y, Sun G. Enhanced Catalytic Performance of (CuO)x/Ce0.9Cu0.1O2Nanospheres: Combined Contribution of the Synergistic Effect and Surface Defects. Chempluschem 2015; 80:886-894. [DOI: 10.1002/cplu.201402328] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/20/2015] [Indexed: 11/11/2022]
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Chmielarz L, Jabłońska M. Advances in selective catalytic oxidation of ammonia to dinitrogen: a review. RSC Adv 2015. [DOI: 10.1039/c5ra03218k] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Selective catalytic oxidation of ammonia to dinitrogen.
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