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Zhang L, Zhao R, Li H, Bao J, Song L, Shan W, Zhu C. Enhanced NO x reduction on CePO 4 catalysts: Cu-loading, phosphotungstic acid, and insights from In-situ DRIFTs and DFT. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135023. [PMID: 38986406 DOI: 10.1016/j.jhazmat.2024.135023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/04/2024] [Accepted: 06/23/2024] [Indexed: 07/12/2024]
Abstract
This study investigates the effects of varying Cu/Ce doping ratios on the NH3-SCR denitrification efficiency using Cu-HPW/CePO4 catalysts, where CePO4 serves as the support and copper-doped phosphotungstic acid (HPW) acts as the active phase. The NH3-SCR reaction mechanism was studied by In-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (In-situ DRIFTs) and Density Functional Theory (DFT). In-situ DRIFTs were employed to delve into the intricacies of adsorption and transformation dynamics at the surface sites of catalysts. This approach furnished a robust theoretical foundation aimed at augmenting the efficacy of low-temperature denitrification catalysts. DFT calculations were used to systematically investigate the reaction pathways, intermediates, transition states, and energy barriers over the HPW structure model to complete the NH3-SCR reaction. Empirical evidence suggests that modifying the catalysts with copper substantially enhances their denitrification efficacy and extends their operational temperature spectrum. A notable initial increase in denitrification efficiency was observed with increasing levels of copper modification, followed by a decline. Within the HPW-O15H site, the NH3-SCR reaction advances through both the E-R and L-H mechanisms, encompassing processes such as NH3 adsorption, intermediate formation and transformation, and product release.
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Affiliation(s)
- Lantian Zhang
- School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014000, China
| | - Ran Zhao
- College of Environment and Energy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014000, China; Baotou rare earth research and development center, China.
| | - Hongxia Li
- School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014000, China.
| | - Jinxiao Bao
- School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014000, China
| | - Lijun Song
- Baotou rare earth research and development center, China
| | - Wenpo Shan
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Chaoyang Zhu
- School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014000, China
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2
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Fang Y, Yang J, Pan C. The Surface/Interface Modulation of Platinum Group Metal (PGM)-Free Catalysts for VOCs and CO Catalytic Oxidation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37379-37389. [PMID: 38981038 DOI: 10.1021/acsami.4c08018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Effective management of volatile organic compounds (VOCs) and carbon monoxide (CO) is critical to human health and the ecological environment. Catalytic oxidation is one of the most promising technologies for achieving efficient VOCs and CO emission control. Platinum group metal (PGM)-free catalysts are recently receiving sustainable attention in catalyzing VOCs and CO removal due to their low cost, superior catalytic activity, and excellent stability, but PGM-free catalysts face challenges in low-temperature catalytic efficiency. In this mini-review, starting with discussing the catalytic mechanism of VOCs and CO oxidation, we summarize the surface/interface modulation strategies of PGM-free catalysts to promote oxygen and VOCs/CO molecule activation for enhanced low-temperature oxidation activity, including oxygen vacancy engineering, heteroatom doping, surface acidity modification, and active interface construction. We highlight the currently remaining challenges and prospects of advanced PGM-free catalyst development for highly efficient VOCs and CO emission control in practical applications.
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Affiliation(s)
- Yarong Fang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Ji Yang
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Chuanqi Pan
- Henan Academy of Sciences, Zhengzhou 450046, P. R. China
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, P. R. China
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3
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Ran M, Dong Y, Zhang X, Li W, Wang Z, Lin S, Yang Y, Song H, Wu W, Liu S, Zhu Y, Zheng C, Gao X. Unraveling the Mechanistic Origin of High N 2 Selectivity in Ammonia Selective Catalytic Oxidation on CuO-Based Catalyst. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:12249-12259. [PMID: 38935480 DOI: 10.1021/acs.est.4c02656] [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: 06/29/2024]
Abstract
NH3 emissions from industrial sources and possibly future energy production constitute a threat to human health because of their toxicity and participation in PM2.5 formation. Ammonia selective catalytic oxidation to N2 (NH3-SCO) is a promising route for NH3 emission control, but the mechanistic origin of achieving high N2 selectivity remains elusive. Here we constructed a highly N2-selective CuO/TiO2 catalyst and proposed a CuOx dimer active site based on the observation of a quadratic dependence of NH3-SCO reaction rate on CuOx loading, ac-STEM, and ab initio thermodynamic analysis. Combining this with the identification of a critical N2H4 intermediate by in situ DRIFTS characterization, a comprehensive N2H4-mediated reaction pathway was proposed by DFT calculations. The high N2 selectivity originated from the preference for NH2 coupling to generate N2H4 over NH2 dehydrogenation on the CuOx dimer active site. This work could pave the way for the rational design of efficient NH3-SCO catalysts.
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Affiliation(s)
- Mingchu Ran
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Yi Dong
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Xiao Zhang
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Zhejiang Baima Lake Laboratory Co., Ltd., Hangzhou 310051, China
- Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China
| | - Weixian Li
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Zhi Wang
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Saisai Lin
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Yang Yang
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China
| | - Hao Song
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Weihong Wu
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Yihan Zhu
- Center for Electron Microscopy, Institute for Frontier and Interdisciplinary Sciences, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology and College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Zhejiang Baima Lake Laboratory Co., Ltd., Hangzhou 310051, China
- Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, State Environmental Protection-Center for Coal-Fired Air Pollution Control, Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
- Zhejiang Baima Lake Laboratory Co., Ltd., Hangzhou 310051, China
- Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China
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4
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Gaioto CC, Pinto JC, Schmal M. Effects of Metal Promoters (M = Fe, Co, and Cu) in Pt/M x Zr y O z Catalysts and Influence of CO 2 and H 2O on the CO Oxidation Activity (PROX): Analysis of Surface Properties After Reaction. ACS OMEGA 2024; 9:25715-25729. [PMID: 38911746 PMCID: PMC11190919 DOI: 10.1021/acsomega.3c09039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 05/18/2024] [Accepted: 05/22/2024] [Indexed: 06/25/2024]
Abstract
In the present paper, the effects of metal promoters (M = Fe, Co, and Cu) in Pt/M x Zr y O z catalysts and the influence of CO2 and H2O on the CO oxidation activity (PROX) were investigated. To do that, characterizations of catalyst structures and surfaces were performed and reported here. The catalyst Pt/Fe x Zr y O z (PFeZ) was the most active at low temperatures among the analyzed ones. The addition of platinum caused strong interaction with the mixed oxide, affecting the structure and the surface composition, blocking basic sites, and thus preventing catalyst deactivation. Particularly, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) results evidenced the formation of carboxylate and carbonate species. Besides, the addition of CO2 and H2O in the gas feed stream affected the observed CO oxidation results, showing that CO2 competes with O2 on metallic sites. Moreover, DRIFTS and temperature-programmed desorption (TPD) analyses suggested the occurrence of OH- oxidation by CO, leading to the formation of highly reactive compounds that can be easily oxidized.
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Affiliation(s)
- Carolina C Gaioto
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972 RJ Brazil
| | - José Carlos Pinto
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972 RJ Brazil
| | - Martin Schmal
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972 RJ Brazil
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5
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Liu F, Chen X, Jie W, Liu Y, Li C, Song G, Gong X, Liu Q, Qiu M, Ding S, Hu F, Gong L, Kawi S. MOF-derived high oxygen vacancies CuO/CeO 2 catalysts for low-temperature CO preferential oxidation. J Colloid Interface Sci 2024; 674:778-790. [PMID: 38955009 DOI: 10.1016/j.jcis.2024.06.110] [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: 03/28/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 07/04/2024]
Abstract
The CO preferential oxidation reaction (CO-PROX) is an effective strategy to remove residual poisonous CO in proton exchange membrane fuel cells, in which oxygen vacancies play a critical role in CO adsorption and activation. Herein, a series of CuO/CeO2 catalysts derived from Ce-MOFs precursors were synthesized using different organic ligands via the hydrothermal method and the CO-PROX performance was investigated. The CuO/CeO2-135 catalyst derived from homophthalic tricarboxylic acid (1,3,5-H3BTC) exhibited superior catalytic performance with 100 % CO conversion at a relatively low temperature (T100% = 100 °C), with a wide reaction temperature range and excellent stability. The superior catalytic properties were attributed to the structural improvements provided by the 1,3,5-H3BTC precursors and the promotional effects of oxygen vacancies. Additionally, in-situ Raman spectroscopy was performed to verify the dynamic roles of oxygen vacancies for CO adsorption and activation, while in-situ DRIFTS analysis revealed key intermediates in the CO-PROX reaction, shedding light on the mechanistic aspects of the catalytic process. This work not only demonstrates insights into the effective CuO/CeO2 catalysts for CO preferential oxidation, but also provides a feasible way to synthesize MOF-derived catalysts.
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Affiliation(s)
- Fen Liu
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Xiaohua Chen
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Weiwei Jie
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Yumeng Liu
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Claudia Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
| | - Guoqiang Song
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
| | - Xia Gong
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Qian Liu
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Mei Qiu
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China
| | - Shunmin Ding
- College of Chemistry and Chemical Engineering, Nanchang University, No. 999 Xuefu Road, Nanchang 330031, China
| | - Feiyang Hu
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China; Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
| | - Lei Gong
- College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China.
| | - Sibudjing Kawi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
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6
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Xiong J, Zhang B, Liang Z, Zhao X, Yang Y, Chen X, Wu J, Yang J, Fang Y, Pan C, Shi L, Luo Z, Guo Y. Highly Reactive Peroxide Species Promoted Soot Oxidation over an Ordered Macroporous Ce 0.8Zr 0.2O 2 Integrated Catalyzed Diesel Particulate Filter. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8096-8108. [PMID: 38627223 DOI: 10.1021/acs.est.4c01001] [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: 05/08/2024]
Abstract
Particulate matter, represented by soot particles, poses a significant global environmental threat, necessitating efficient control technology. Here, we innovatively designed and elaborately fabricated ordered hierarchical macroporous catalysts of Ce0.8Zr0.2O2 (OM CZO) integrated on a catalyzed diesel particulate filter (CDPF) using the self-assembly method. An oxygen-vacancy-enriched ordered macroporous Ce0.8Zr0.2O2 catalyst (VO-OM CZO) integrated CDPF was synthesized by subsequent NaBH4 reduction. The VO-OM CZO integrated CDPF exhibited a markedly enhanced soot oxidation activity compared to OM CZO and powder CZO coated CDPFs (T50: 430 vs 490 and 545 °C, respectively). The well-defined OM structure of the VO-OM CZO catalysts effectively improves the contact efficiency between soot and the catalysts. Meanwhile, oxygen vacancies trigger the formation of a large amount of highly reactive peroxide species (O22-) from molecular oxygen (O2) through electron abstraction from the three adjacent Ce3+ (3Ce3+ + Vö + O2 → 3Ce4+ + O22-), contributing to the efficient soot oxidation. This work demonstrates the fabrication of the ordered macroporous CZO integrated CDPF and reveals the importance of structure and surface engineering in soot oxidation, which sheds light on the design of highly efficient PM capture and removal devices.
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Affiliation(s)
- Juxia Xiong
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Baojian Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Zhenfeng Liang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Xinya Zhao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Yuan Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Xiaoping Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Jian Wu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Ji Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Yarong Fang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Chuanqi Pan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Limin Shi
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
| | - Zhu Luo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430082, P. R. China
| | - Yanbing Guo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, Engineering Research Center of Photo-Energy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430082, P. R. China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430082, P. R. China
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7
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Liu Y, Lin L, Yu L, Mu R, Fu Q. Spatially Separated Active Sites Enable Selective CO Oxidation Reaction on Oxide Catalyst. J Phys Chem Lett 2023; 14:9780-9786. [PMID: 37882533 DOI: 10.1021/acs.jpclett.3c02247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
The search for efficient non-noble-metal catalysts able to perform selective oxidation reactions is of great importance, with relevance to many catalytic processes. However, this is often hampered because the origin of the selectivity remains controversial, particularly for reactions catalyzed by oxides. Here, combining high-pressure surface imaging techniques and theoretical calculations, we identify that spatially separated active sites for O2 activation and H2 adsorption on an ultrathin Mn3O4 surface enable selective oxidation of CO over H2. Theoretical calculations reveal that Mn-O pairs for H2 dissociation are separated from Mn-Mn pairs for the formation of adsorbed O2* so that H2 has to surmount much higher barriers for both H2 dissociation and H diffusion while CO can directly react with O2* following the Eley-Rideal process. Our study sheds light on the atomic-level understanding of the surface structure-dependent selective oxidation reaction on oxide catalysts.
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Affiliation(s)
- Yijing Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Le Lin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Liang Yu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Rentao Mu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qiang Fu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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8
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Vélez-Fort E, Ohresser P, Silly MG, Bonvoisin J, Silly F. Structural and Magnetic Properties of a Drop-Cast C 54H 34Br 4CuO 4 β-Diketonato Complex Film on a Graphite Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14000-14005. [PMID: 37656672 DOI: 10.1021/acs.langmuir.3c01684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
The structural and magnetic properties of a drop-cast film of flat C54H34Br4CuO4, a β-diketonato complex functionalized with bromine atoms, on a graphite surface are investigated using scanning tunneling microscopy, synchrotron X-ray absorption spectroscopy, and X-ray magnetic circular dichroism. Experimental measurements reveal that the Cu-complexes preferentially lay flat on the graphite surface. The magnetic hysteresis loops show that the organic thin film remains paramagnetic at 2 K with an easy axis of magnetization perpendicular to the graphite surface and is therefore perpendicular to the plane of the Cu-complex skeleton.
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Affiliation(s)
- Emilio Vélez-Fort
- European Synchrotron Radiation Facility (ESRF), Avenue des Martyrs 71, 38043 Grenoble, France
| | - Philippe Ohresser
- Synchrotron SOLEIL, L'Orme des Merisiers, F-91190 Saint-Aubin, France
| | - Mathieu G Silly
- Synchrotron SOLEIL, L'Orme des Merisiers, F-91190 Saint-Aubin, France
| | - Jacques Bonvoisin
- CEMES, CNRS UPR 8011, Université de Toulouse, 29 Rue Jeanne Marvig, B.P. 94347, 31055 Toulouse Cedex 4, France
| | - Fabien Silly
- Université Paris-Saclay, CEA, CNRS, SPEC, TITANS, F-91191 Gif sur Yvette, France
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9
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Guo J, Gan W, Chen R, Zhang M, Sun Z. Au nanoparticle sensitized blue TiO 2 nanorod arrays for efficient Gatifloxacin photodegradation. RSC Adv 2023; 13:28299-28306. [PMID: 37767117 PMCID: PMC10521361 DOI: 10.1039/d3ra05552c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023] Open
Abstract
TiO2 nanorod arrays have been widely used in photocatalytic processes, but their poor visible light absorption and rapid carrier recombination limit their application. Both introducing oxygen vacancies and using precious metals as surface plasmon resonance (SPR) stimulators are effective strategies to enhance their photocatalytic performance. Herein, Au nanoparticle sensitized blue TiO2 nanorod arrays (Au/B-TiO2) were successfully fabricated for efficient Gatifloxacin photodegradation. The degradation efficiency of Gatifloxacin was up to 95.0%. Moreover, the corresponding reaction rate constant (Ka) was up to 0.02007 min-1. Additionally, it was suggested that Gatifloxacin could be subject to three different degradation pathways. The superior catalytic activity of Au/B-TiO2 is a result of the combined effect of the two components. Firstly, TiO2 nanorod arrays provide a larger surface area for Au deposition and act as efficient transfer channels. Secondly, the presence of oxygen vacancies in blue TiO2 nanorod arrays enhances the catalytic activity. Thirdly, Au acts as a SPR activator, providing a large number of high-energy electrons in the photocatalysis process. Lastly, the improved light capture capabilities are essential for efficient removal of Gatifloxacin. This work provides a new approach for the construction of a high-performance heterojunction photocatalyst in advanced oxidation processes.
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Affiliation(s)
- Jun Guo
- School of Electronic Engineering, Huainan Normal University Huainan 232038 P. R China
- School of Materials Science and Engineering, Anhui University Hefei 230601 P. R China
| | - Wei Gan
- School of Materials Science and Engineering, Anhui University Hefei 230601 P. R China
| | - Ruixin Chen
- School of Materials Science and Engineering, Anhui University Hefei 230601 P. R China
| | - Miao Zhang
- School of Materials Science and Engineering, Anhui University Hefei 230601 P. R China
| | - Zhaoqi Sun
- School of Materials Science and Engineering, Anhui University Hefei 230601 P. R China
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10
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Tangpakonsab P, Genest A, Yang J, Meral A, Zou B, Yigit N, Schwarz S, Rupprechter G. Kinetic and Computational Studies of CO Oxidation and PROX on Cu/CeO 2 Nanospheres. Top Catal 2023; 66:1129-1142. [PMID: 37724312 PMCID: PMC10505120 DOI: 10.1007/s11244-023-01848-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2023] [Indexed: 09/20/2023]
Abstract
As supported CuO is well-known for low temperature activity, CuO/CeO2 nanosphere catalysts were synthesized and tested for CO oxidation and preferential oxidation of CO (PROX) in excess H2. For the first reaction, ignition was observed at 95 °C, whereas selective PROX occurred in a temperature window from 50 to 100 °C. The catalytic performance was independent of the initial oxidation state of the catalyst (CuO vs. Cu0), suggesting that the same active phase is formed under reaction conditions. Density functional modeling was applied to elucidate the intermediate steps of CO oxidation, as well as those of the comparably less feasible H2 transformation. In the simulations, various Cu and vacancy sites were probed as reactive centers enabling specific pathways. Supplementary Information The online version contains supplementary material available at 10.1007/s11244-023-01848-x.
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Affiliation(s)
- Parinya Tangpakonsab
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Alexander Genest
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Jingxia Yang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Rd 333, Songjiang, Shanghai People’s Republic of China
| | - Ali Meral
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Bingjie Zou
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Rd 333, Songjiang, Shanghai People’s Republic of China
| | - Nevzat Yigit
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Sabine Schwarz
- University Service Center for Transmission Electron Microscopy, TU Wien, Wiedner Hauptstr. 8-10, 1040 Vienna, Austria
| | - Günther Rupprechter
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
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11
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Wang C, Liu W, Liao M, Weng J, Shen J, Chen Y, Du Y. Novel nano spinel-type high-entropy oxide (HEO) catalyst for hydrogen production using ethanol steam reforming. NANOSCALE 2023; 15:8619-8632. [PMID: 37092289 DOI: 10.1039/d2nr07195a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Catalyst sintering caused by high temperature operating conditions during ethanol steam reforming (ESR) is a common issue for traditional catalysts with low Tammann temperature metals. In recent years, high entropy oxides have been popular in thermal catalysis due to their special thermodynamics and kinetics characteristics, which is expected to be a suitable approach for enhancing catalyst stability. This paper first reports the application of HEO in ESR and the characterization. The results exhibited a nano structure (CoCrFeNiAl)3O4 HEO with a spinel-phase and was successfully synthesized by a polyol hydrothermal precipitation-calcination method. An abundance of oxygen vacancies were formed, and were further enriched in a hydrogen atmosphere as the M-O bond opened. Interestingly, its self-reorganization featured the rendered the metals spilling out of the HEO bulk phase as active species for hydrogen production during ESR, whereas the isolated metal cation randomly dissolved into the parent metal oxide cell again after the reaction instead of agglomerating over the catalyst surface. This gave the (CoCrFeNiAl)3O4 a large number of dispersed active sites, as well as a high thermal stability. In addition, 81% of the hydrogen yield as well as 85% of H2 selectivity were achieved at 600 °C. This research might offer possibilities for the development of thermal catalytic hydrogen production under high temperature conditions such as steam reforming.
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Affiliation(s)
- Chao Wang
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Wei Liu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Mingzheng Liao
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Jiahong Weng
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Jian Shen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Ying Chen
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanping Du
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, China
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12
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Wang F, Yu Z, Zhai S, Li Y, Xu Y, Ye Y, Wei X, Xu J, Xue B. CuO decorated vacancy-rich CeO 2 nanopencils for highly efficient catalytic NO reduction by CO at low temperature. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:31895-31904. [PMID: 36459322 DOI: 10.1007/s11356-022-24508-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
With the rapid development of transportation and vehicles, the elimination of NOx and CO has highly attracted public attention. In this work, vacancy-rich CeO2 nanopencil supported CuO catalysts (CuO/CeO2-NPC) were successfully prepared for NO reduction by CO. Importantly, CeO2 with nanopencil-like shape (CeO2-NPC) have been synthesis by solvothermal method for the first time. The physicochemical properties of all samples were studied in detail by combining the means of X-ray diffraction (XRD), Raman spectroscopy, electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS), H2-temperature-programmed reduction (H2-TPR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), N2 physisorption (Brunauer-Emmett-Teller), and NO and CO temperature-programmed desorption (NO-TPD and CO-TPD) techniques. Compared with CeO2 nanorods and nanoparticles supported CuO catalysts (CuO/CeO2-NR and CuO/CeO2-NP), the CuO/CeO2-NPC catalysts showed the highest catalytic activity, affording more than 90% NO conversion at 69 °C as well as excellent H2O tolerance at 150 °C, which is superior to catalysts previously reported. Characterization results indicated that the synergistic effect between the well-dispersed CuO and the CeO2 nanopencil support enables a favorable electron transfer between these components and enhances the density of surface oxygen vacancies and Cu+ species, which consequently accelerating the redox cycle. The results indicated that the morphology control of CeO2 support could be an efficient way to evidently enhance the catalytic performance for NO + CO reaction.
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Affiliation(s)
- Fei Wang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China.
| | - Zairan Yu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Shuai Zhai
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Yuanyuan Li
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Yang Xu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Yuyang Ye
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Xuejiao Wei
- School of Chemical Engineering and Materials, Changzhou Institute of Technology, Changzhou, 213032, People's Republic of China
| | - Jie Xu
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
| | - Bing Xue
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical and Engineering, Changzhou University, Changzhou, 213164, People's Republic of China
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13
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Investigation of Cu-doped ceria through a combined spectroscopic approach: involvement of different catalytic sites in CO oxidation. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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14
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Ye Y, Gao L, Xu J, Wang L, Mo L, Zhang X. Effect of CuO species and oxygen vacancies over CuO/CeO2 catalysts on low-temperature oxidation of ethyl acetate. J RARE EARTH 2023. [DOI: 10.1016/j.jre.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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15
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Sun N, Xiang L, Zhuge B, Kan E, Yu N, Li L, Kuai L. Atomically Incorporating Ni into Mesoporous CeO 2 Matrix via Synchronous Spray-Pyrolysis as Efficient Noble-Metal-Free Catalyst for Low-Temperature CO Oxidation. Inorg Chem 2023; 62:782-791. [PMID: 36583676 DOI: 10.1021/acs.inorgchem.2c03293] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Low-temperature catalytic CO oxidation is an important chemical process in versatile applications, such as the H2 utilization for low-temperature H2 air fuel cells. Pt-group metal catalysts are efficient but highly cost-consuming. This work demonstrates an excellent and sixpenny catalyst with earth-abundant Ni and Ce, in which Ni ions are atomically incorporated into the CeO2 matrix (Ni-Ce-Ox) by synchronous spray-pyrolysis (SSP) of mixture nitrates of Ni and Ce. The Ni-Ce-Ox catalyst presents a mesoporous structure. Revealed by a model reaction of 1% CO, 1% O2, and 98% balance He at a space velocity of 13,200 mL/gcat/h, Ni-Ce-Ox catalysts display a typical volcano-shaped relationship between reactivity and Ni incorporation amount. The optimized Ni incorporation appears with a high Ni/Ce atomic ratio of 0.25, endowing the T50 (temperature corresponding to a CO conversion of 50%), which is lower-shifted by 165 °C than that of pristine CeO2 (266 °C). The density functional theory (DFT) calculations further indicate that the much-reduced oxygen vacancy formation energy at Ni-Ce single-atom sites boosted the adsorption activation of the CO molecule and therefore promoted the CO oxidation process. Besides, the2 Ni-Ce-Ox from the SSP method presents better performance than the counterparts from immersion and hydrothermal methods. This work paves a way to access efficient noble-metal-free catalysts for low-temperature CO oxidation.
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Affiliation(s)
- Na Sun
- School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Beijing Middle Road, Wuhu241000, China
| | - Linlin Xiang
- School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Beijing Middle Road, Wuhu241000, China
| | - Bingsen Zhuge
- School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Beijing Middle Road, Wuhu241000, China
| | - Erjie Kan
- School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Beijing Middle Road, Wuhu241000, China
| | - Nan Yu
- College of Chemistry and Materials Science, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Jiuhua South Road, Wuhu241002, China
| | - Lei Li
- Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology of Chongqing, Yangtze Normal University, Chongqing408100, China
| | - Long Kuai
- School of Chemical and Environmental Engineering, Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, Anhui Polytechnic University, Beijing Middle Road, Wuhu241000, China
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16
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Wang X, Li T, Wang H, Zhao K, Huang Y, Yuan H, Cui X, Shi F. Identifying active sites at the Cu/Ce interface for hydrogen borrowing reactions. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Zedan AF, AlJaber AS, El-Shall MS. Facile Microwave Synthesis of Hierarchical Porous Copper Oxide and Its Catalytic Activity and Kinetics for Carbon Monoxide Oxidation. ACS OMEGA 2022; 7:44021-44032. [PMID: 36506176 PMCID: PMC9730479 DOI: 10.1021/acsomega.2c05399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
The synthesis of copper oxide (CuO)-based nanomaterials has received a tremendous deal of interest in recent years. Particularly, the design and development of novel CuO structures with improved physical and chemical properties have attracted immense attention, especially for catalysis applications. We report on a rational, rapid, and surfactant-free microwave synthesis (MWS) of hierarchical porous copper oxide (HP-CuO) with a three-dimensional (3D) sponge-like topology using an MWS reactor. The activity of the microwave (MW)-synthesized HP-CuO catalysts for carbon monoxide (CO) oxidation was studied and compared to CuO prepared by the conventional heating method (CHM). Results showed that HP-CuO catalysts prepared by MWS for 10 and 30 min surpassed the CuO catalyst prepared by CHM, exhibiting T 80 of 98 and 115 °C, respectively, as compared to 185 °C of CuO prepared by CHM (T80 is the temperature corresponding to 80% CO conversion). In addition, the MW-synthesized HP-CuO catalysts outperformed the CHM-synthesized CuO, achieving a 100% CO conversion at 150 °C compared to 240 °C in the case of CuO prepared by CHM. Interestingly, the HP-CuO catalyst expressed workable CO conversion kinetics with a reaction rate of c.a.35 μmol s-1 g-1 at 150 °C and apparent activation energy (E a) of 82 kJ mol-1. The HP-CuO catalyst showed excellent cycling and long-term stabilities for CO oxidation up to 4 cycles and 72 h on the stream, respectively. The enhanced catalytic activity and stability of the HP-CuO catalyst appear to result from the unique topological and structural features of HP-CuO, which were revealed by SEM, XRD, Raman, BET, TGA, XPS, and TPR techniques.
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Affiliation(s)
- Abdallah F. Zedan
- National
Institute of Laser Enhanced Sciences, Cairo
University, Giza12613, Egypt
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia23284, United States
| | - Amina S. AlJaber
- Department
of Chemistry and Earth Sciences, Qatar University, Doha2713, Qatar
| | - M. Samy El-Shall
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia23284, United States
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18
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Copper–Cerium–Tin Oxide Catalysts for Preferential Oxidation of CO in Hydrogen: Effects of Synthesis Method and Copper Content. Catalysts 2022. [DOI: 10.3390/catal12121575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Copper was incorporated into the Ce-Sn and comparative Ce-Zr oxide supports by one-pot precipitation in the presence of CTAB template and by the impregnation of templated Ce-Sn and Ce-Zr oxides. The synthesized Cu-Ce-Sn and Cu-Ce-Zr catalysts were tested in the continuous-flow preferential oxidation of CO in hydrogen excess. The one-pot synthesized tin- and zirconium-doped catalysts demonstrated better CO conversion and CO2 selectivity than their impregnated counterparts. For the tin-modified ternary system that showed the best catalytic performance, the copper content was further optimized. The structure, reducibility, surface chemical state and textural properties of the catalysts were analyzed by SEM-EDX, XRD, H2-TPR, Raman spectroscopy, XPS and TEM. The nonmonotonic changes in the specific surface area, Cu+/Cu2+ ratio and ratio of lattice and non-lattice oxygen with increasing the Cu content are discussed in terms of copper distribution in the catalysts. The influence of the interaction between copper oxide species and the cerium–tin/cerium–zirconium oxide support on the performance of the ternary catalysts was thoroughly analyzed and discussed.
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19
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Pt-O-Cu Anchored on Fe2O3 Boosting Electrochemical Water-gas Shift Reaction for Highly Efficient H2 Generation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.033] [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]
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20
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Wang H, Lv P, Liu C, Tang R, Zhao C, Lu Q, Du F. Cerium-based nanoparticles triggered catalytic reaction for the colorimetric and ratiometric fluorimetric dual-signal sensing of vitamin C. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121324. [PMID: 35567822 DOI: 10.1016/j.saa.2022.121324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 04/18/2022] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
The construction of multi-modal detection methods has attracted widespread attention in the field of biosensing due to their high sensitivity and strong anti-interference ability. In this manuscript, we developed colorimetric and ratiometric fluorescence dual-signal optical methods based on cerium-based nanoparticles (Ce NPs) for the sensitive detection of vitamin C (VC). The catalysis of Ce NPs with excellent peroxidase-like activity upon the reaction of H2O2 with OPD was occurred, promoting the oxidation of o-phenylenediamine (OPD) to generate 2,3-diaminophennazine (OPDox) with an obvious absorption peak at 420 nm and an emission peak at 565 nm. In the presence of VC, VC not only inhibited the generation of OPDox, but also induced the formation of quinoxaline with an obvious absorption peak at 336 nm and an emission peak at 430 nm. This can be visually observed and monitored by measuring the absorbance of peak at 336 nm (A336) and the ratiometric fluorescence intensity (F430/F565). Therefore, the dual-signal methods are constructed for the detection of VC. The detection lower detection limits are 8.0 μM and 8.4 μM when using the fluorescence and colorimetric signals, respectively. Furthermore, the proposed methods are successfully applied to the detection of VC in practical samples with satisfactory results.
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Affiliation(s)
- Haiyan Wang
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China.
| | - Pengpeng Lv
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China
| | - Cheng Liu
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China; College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Ren Tang
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China
| | - Chenxi Zhao
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China
| | - Qiujun Lu
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China
| | - Fuyou Du
- College of Biological and Environmental Engineering, Changsha University, Changsha 410022, China; College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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21
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Eid K, Sliem MH, Al-Ejji M, Abdullah AM, Harfouche M, Varma RS. Hierarchical Porous Carbon Nitride-Crumpled Nanosheet-Embedded Copper Single Atoms: An Efficient Catalyst for Carbon Monoxide Oxidation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40749-40760. [PMID: 36037411 DOI: 10.1021/acsami.2c06782] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Rational design of metal single-site embedded porous graphitic carbon nitride (P-g-C3N4) nanostructures exploiting maximum atom utilization is warranted to enhance the thermal CO oxidation (COOx) reaction. Herein, a facile, green, one-pot, and template-free approach is developed to fabricate the hierarchical porous P-g-C3N4-crumpled ultrathin nanosheets atomically doped with copper single atoms (Cu-P-g-C3N4). Mechanistically, the quick protonation of melamine and pyridine under acidic conditions induces deamination to form melem, which is polycondensed under heating. The interconnected pores, high surface area (240 m2g-1), and maximized exposed isolated Cu atomic active sites (1.8 wt %) coordinated with nitrogen atom P-g-C3N4 are the salient features of Cu- P-g-C3N4 that endowed complete conversion to CO2 at 184 °C. In contrast, P-g-C3N4 only converted 3.8% of CO even at 350 °C, implying the electronic effect of Cu single atoms. The abundant Cu-nitrogen moieties can drastically weaken the binding affinity of the CO-oxidation (COOx) intermediates and products, thus accelerating the reaction kinetics at a low temperature. This study may promote the fabrication of P-g-C3N4 doped with various single atoms for the oxidation of CO.
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Affiliation(s)
- Kamel Eid
- Gas Processing Center, College of Engineering, Qatar University, Doha 2713, Qatar
| | - Mostafa H Sliem
- Center for Advanced Materials, Qatar University, Doha 2713, Qatar
| | - Maryam Al-Ejji
- Center for Advanced Materials, Qatar University, Doha 2713, Qatar
| | | | - Messaoud Harfouche
- SESAME Synchrotron, King Hussein Bin Talal St / Box 7, Allan 19252, Jordan
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, Olomouc 783 71, Czech Republic
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22
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The Emergence of the Ubiquity of Cerium in Heterogeneous Oxidation Catalysis Science and Technology. Catalysts 2022. [DOI: 10.3390/catal12090959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Research into the incorporation of cerium into a diverse range of catalyst systems for a wide spectrum of process chemistries has expanded rapidly. This has been evidenced since about 1980 in the increasing number of both scientific research journals and patent publications that address the application of cerium as a component of a multi-metal oxide system and as a support material for metal catalysts. This review chronicles both the applied and fundamental research into cerium-containing oxide catalysts where cerium’s redox activity confers enhanced and new catalytic functionality. Application areas of cerium-containing catalysts include selective oxidation, combustion, NOx remediation, and the production of sustainable chemicals and materials via bio-based feedstocks, among others. The newfound interest in cerium-containing catalysts stems from the benefits achieved by cerium’s inclusion, which include selectivity, activity, and stability. These benefits arise because of cerium’s unique combination of chemical and thermal stability, its redox active properties, its ability to stabilize defect structures in multicomponent oxides, and its propensity to stabilize catalytically optimal oxidation states of other multivalent elements. This review surveys the origins and some of the current directions in the research and application of cerium oxide-based catalysts.
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23
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Shaw M, Samanta D, Bera S, Mahto MK, Salam Shaik MA, Konar S, Mondal I, Dhara D, Pathak A. Role of Surface Oxygen Vacancies and Oxygen Species on CuO Nanostructured Surfaces in Model Catalytic Oxidation and Reductions: Insight into the Structure-Activity Relationship Toward the Performance. Inorg Chem 2022; 61:14568-14581. [PMID: 35914234 DOI: 10.1021/acs.inorgchem.2c01467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Defect engineering, such as modification of oxygen vacancy density, has been considered as an effective approach to tailor the catalytic performance on transition-metal oxide nanostructured surfaces. The role of oxygen vacancies (OV) on the surface of the as-prepared, zinnia-shaped morphology of CuO nanostructures and their marigold forms on calcination at 800 °C has been investigated through the study of model catalytic reactions of reduction of 4-nitrophenol and aerobic oxidation of benzyl alcohol. The OV on the surfaces of different morphologies of CuO have been identified and quantified through Rietveld analysis and HRTEM, EPR, and XPS studies. The structure-activity relationships between surface oxygen vacancies (OV) and catalytic performance have been systematically investigated. The enhanced catalytic performance of the cubic CuO nanostructures compared to their as-prepared forms has been attributed to the formation of surface oxygen species on the reactive and dominant (110) surface that has low oxygen vacancy formation energy. The mechanistic role of surface oxygen species in the studied reactions has been quantitatively correlated with the catalytic activity of the different morphological forms of the CuO nanostructures.
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Affiliation(s)
- Manisha Shaw
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Dipanjan Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Sharmita Bera
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Madhusudan Kr Mahto
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Md Abdus Salam Shaik
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Suraj Konar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.,Department of Chemistry, R.D. & D.J. College, Munger, Bihar 811201, India
| | - Imran Mondal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Dibakar Dhara
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Amita Pathak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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24
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Sato K, Zaitsu S, Kitayama G, Yagi S, Kayada Y, Nishida Y, Wada Y, Nagaoka K. Operando Spectroscopic Study of the Dynamics of Ru Catalyst during Preferential Oxidation of CO and the Prevention of Ammonia Poisoning by Pt. JACS AU 2022; 2:1627-1637. [PMID: 35911446 PMCID: PMC9326823 DOI: 10.1021/jacsau.2c00195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrogen is a promising clean energy source. In domestic polymer electrolyte fuel cell systems, hydrogen is produced by reforming of natural gas; however, the reformate contains carbon monoxide (CO) as a major impurity. This CO is removed from the reformate by a combination of the water-gas shift reaction and preferential oxidation of CO (PROX). Currently, Ru-based catalysts are the most common type of PROX catalyst; however, their durability against ammonia (NH3) as an impurity produced in situ from trace amounts of nitrogen also contained in the reformate is an important issue. Previously, we found that addition of Pt to an Ru catalyst inhibited deactivation by NH3. Here, we conducted operando XAFS and FT-IR spectroscopic analyses with simultaneous gas analysis to investigate the cause of the deactivation of an Ru-based PROX catalyst (Ru/α-Al2O3) by NH3 and the mechanism of suppression of the deactivation by adding Pt (Pt/Ru/α-Al2O3). We found that nitric oxide (NO) produced by oxidation of NH3 induces oxidation of the Ru nanoparticle surface, which deactivates the catalyst via a three-step process: First, NO directly adsorbs on Ru0 to form NO-Ruδ+, which then induces the formation of O-Ru n+ by oxidation of the surrounding Ru0. Then, O-Ru m+ is formed by oxidation of Ru0 starting from the O-Ru n+ nuclei and spreading across the surface of the nanoparticle. Pt inhibits this process by alloying with Ru and inducing the decomposition of adsorbed NO, which keeps the Ru in a metallic state.
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Affiliation(s)
- Katsutoshi Sato
- Department of Chemical Systems Engineering, Graduate school of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
| | - Shuhei Zaitsu
- Department of Applied Chemistry, Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
| | - Godai Kitayama
- Department of Applied Chemistry, Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
| | - Sho Yagi
- Department of Applied Chemistry, Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
| | - Yuto Kayada
- Department of Applied Chemistry, Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
| | - Yoshihide Nishida
- Department of Chemical Systems Engineering, Graduate school of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yuichiro Wada
- Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University, 700 Dannoharu, Oita 870-1192, Japan
| | - Katsutoshi Nagaoka
- Department of Chemical Systems Engineering, Graduate school of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan
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25
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Han B, Li X, Geng Z, Li L, Li G. Confinement chemistry of FeO x centers for activating molecular oxygen under ambient conditions. NANOSCALE 2022; 14:9715-9723. [PMID: 35730888 DOI: 10.1039/d2nr02236b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Activating molecular oxygen under mild conditions is highly important for developing advanced green technologies and for understanding the origin and running of life as well, which still remains a challenge. In this work, we report on the confinement chemistry for activating molecular oxygen over oxides under mild conditions by presenting the synthesis and characterization of FeOx species confined to the pores of support CeO2 nanospheres. Active catalytic materials are obtained by a controllable three-step method via the formation of porous CeO2 nanospheres that have an average diameter of 120 nm and exhibit a large surface area of 168 m2 g-1 and a pore size of 18.7 nm, confining FeOx in intimate contact with ultra-small Pt particles in pores. The optimized PtOy-FeOx/CeO2-H catalyst showed an excellent performance in the preferential oxidation of CO reactions, as featured by 100% CO conversion at room temperature with almost no attenuation in a prolonged operation, which could not be accessible without pore-confined FeOx centers. Mechanical studies prove that the reaction progresses via abnormal non-competitive adsorption associated with synergistic roles from uniform loading, stabilization of divalent Fe species, surface oxygen activation on CeO2 supports, and the reduced H2 spillover effect on Pt0, making the CO species adsorbed on Ptδ+ easier to be desorbed. The methodology demonstrated here may inspire one to explore more advanced catalysts with high activity at room temperature essential for a wide range of applications.
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Affiliation(s)
- Bingqi Han
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
| | - Xinbo Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
| | - Zhibin Geng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
| | - Liping Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
| | - Guangshe Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
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26
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Lee JK, Wu S, Lim PC, Zhang Z. Spectrally Resolved Single Particle Photoluminescence Microscopy Reveals Heterogeneous Photocorrosion Activity of Cuprous Oxide Microcrystals. NANO LETTERS 2022; 22:4654-4660. [PMID: 35653432 DOI: 10.1021/acs.nanolett.2c00458] [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: 06/15/2023]
Abstract
Photocorrosion of cuprous oxide (Cu2O) has notably limited its application as an efficient photocatalyst. We report a facile approach to visualize in situ formation of copper and oxygen vacancies on the Cu2O surface under ambient condition. By imaging photoexcited single Cu2O particles, the resultant photoluminescence generated at Cu2O surface enable effective localization of copper and oxygen vacancies. Single particle photoluminescence imaging showed substantial heterogeneity in the rate of defect formation at different facets with the truncated corners achieving the fastest initial rate of photooxidation before subsequently changing to the face and edge sites as the photocorrosion proceeds. The generation of copper or oxygen vacancy is proportional to the photoexcitation power, while pH-dependent studies rationalized alkaline conditions for the formation of copper vacancy. Reaction in an electron-hole scavenger system showed that photooxidation and photoreduction will simultaneously occur, yet heterogeneously on the surface of Cu2O, with rate of copper vacancy formation being fastest.
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Affiliation(s)
- Jinn-Kye Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Shuyang Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Pei Chong Lim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Zhengyang Zhang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
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27
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López-Rodríguez S, Davó-Quiñonero A, Bailón-García E, Lozano-Castelló D, Villar-Garcia IJ, Dieste VP, Calvo JAO, Velasco JRG, Bueno-López A. Monitoring by in situ NAP-XPS of active sites for CO2 methanation on a Ni/CeO2 catalyst. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.101980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Wei Y, Li Y, Han D, Liu J, Lyu S, Li C, Tan Y, Wang Z, Yu J. Facile strategy to construct porous CuO/CeO2 nanospheres with enhanced catalytic activity toward CO catalytic oxidation at low temperature. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-02334-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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29
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Chen L, Zhang D, Chen Y, Liu F, Zhang J, Fu M, Wu J, Ye D. Porous stainless-steel fibers supported CuCeFeO x/Zeolite catalysts for the enhanced CO oxidation: Experimental and kinetic studies. CHEMOSPHERE 2022; 291:132778. [PMID: 34742759 DOI: 10.1016/j.chemosphere.2021.132778] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
To develop novel catalysts of high-performance and cost-effectiveness, and to investigate the reaction kinetics of CO oxidation, ternary CuCeFeOx catalysts supported on zeolite/PSF (porous stainless-steel fibers) were synthesized for the first time. Effects of different Ce/Fe ratios, loading amounts, calcination temperatures, and reaction kinetics were investigated. Remarkably improved catalytic performance was achieved in the PSF-supported catalysts compared to the granular ones, owing to the increased mass/heat transfer efficiency and the high dispersion of active metal oxide species anchored on the zeolite layer. The Cu3Ce12Fe4-400 sample exhibited the best catalytic activity with a temperature difference in T90 of almost 40 °C lower than the worst one. Characterization results from XRD, FTIR, TEM, XPS, H2-TPR, etc. revealed that the promoted reducibility of metal oxides and formation of more oxygen vacancies significantly contributed to the enhanced catalytic activity. Furthermore, a generalized rate expression was derived from intrinsic and macro kinetic studies by assuming the conversion of CO to CO2 as the rate-determining step, in which CO oxidation over the PSF-supported catalysts followed the pseudo-first-order kinetic established by the Langmuir-Hinshelwood type mechanism.
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Affiliation(s)
- Longwen Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528333, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China
| | - Dong Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China.
| | - Yanwu Chen
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528333, China
| | - Feng Liu
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528333, China
| | - Jun Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China
| | - Mingli Fu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China
| | - Junliang Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, Guangzhou, 510640, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou, 510640, China.
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30
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Zeng M, Wang X, Yang Q, Chu X, Chen Z, Li Z, Redshaw C, Wang C, Peng Y, Wang N, Zhu Y, Wu YA. Activating Surface Lattice Oxygen of a Cu/Zn 1-xCu xO Catalyst through Interface Interactions for CO Oxidation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:9882-9890. [PMID: 35142210 DOI: 10.1021/acsami.1c24321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surface lattice oxygen in metal oxides is a common participant in many chemical reactions. Given this, the structural design of catalysts to activate lattice oxygen and moreover investigations into the effect of lattice oxygen on reaction pathways are hot topics. With this in mind, herein we prepare CuO-Zn1-xCuxO (ZCO) nanofibers akin to the Trojan horse legend and via an in situ reduction obtain activated Cu/Zn1-xCuxO (Cu/ZCO) nanofibers. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy reveal that surface lattice oxygen of Cu/ZCO is effectively activated from inert O2- to reactive O2-x. This activation stems from the enhanced covalence of metal-oxygen bonds and the electron transfer between Cu and the support. Online mass spectrometry reveals that Cu/ZCO with activated lattice oxygen exhibits a higher Mars-van Krevelen reaction efficiency during the CO oxidation process. This study offers a new avenue to engineer interface interactions, given, as highlighted here, the importance of surface lattice oxygen in oxide supports during the catalytic process.
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Affiliation(s)
- Minli Zeng
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interface Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Qilei Yang
- School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Xuefeng Chu
- School of Environment, Tsinghua University, Beijing 100084, P. R. China
- Key Laboratory of Architectural Cold Climate Energy Management, Ministry of Education, Jilin Jianzhu University, Changchun 130118, P. R. China
| | - Zuolong Chen
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interface Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Zhen Li
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Carl Redshaw
- Plastics Collaboratory, Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
| | - Chao Wang
- Key Laboratory of Architectural Cold Climate Energy Management, Ministry of Education, Jilin Jianzhu University, Changchun 130118, P. R. China
| | - Yue Peng
- School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Nannan Wang
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Yanqiu Zhu
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interface Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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31
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Hudy C, Długosz O, Gryboś J, Zasada F, Krasowska A, Janas J, Sojka Z. Catalytic performance of mixed M xCo 3−xO 4 (M = Cr, Fe, Mn, Ni, Cu, Zn) spinels obtained by combustion synthesis for preferential carbon monoxide oxidation (CO-PROX): insights into the factors controlling catalyst selectivity and activity. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00388k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of mixed cobalt spinel catalysts (MxCo3−xO4 (M = Cr, Fe, Mn, Ni, Cu, Zn)) was synthesized and tested in the CO-PROX reaction and in sole CO oxidation and H2 oxidation as references.
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Affiliation(s)
- Camillo Hudy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Olga Długosz
- Faculty of Engineering and Chemical Technology, Cracow University of Technology, 31-155 Krakow, Poland
| | - Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Filip Zasada
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Aneta Krasowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Janusz Janas
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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32
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Hudy C, Gryboś J, Steenbakkers K, Góra-Marek K, Zasada F, Sojka Z. Isotopic evidence for the tangled mechanism of the CO-PROX reaction over mixed and bare cobalt spinel catalysts. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01063a] [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 catalytic performance of the bare Co3O4 and mixed cobalt-spinel catalysts (MxCo3−xO4; M = Cr, Mn, Fe, Ni, Cu, Zn) in the CO-PROX process was investigated in the temperature-programmed surface reaction (TPSR) mode using 18O2 as an oxidant.
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Affiliation(s)
- Camillo Hudy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kim Steenbakkers
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kinga Góra-Marek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Filip Zasada
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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33
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Ji W, Wang N, Li Q, Zhu H, Lin K, Deng J, Chen J, Zhang H, Xing X. Oxygen vacancy distributions and electron localization in a CeO2(100) nanocube. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01179k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Oxygen vacancy distributions in a 5 nm CeO2 nanocube were determined using the Reverse Monte Carlo method. The oxygen vacancies tend to be located on the surface of the CeO2 nanocube, with far fewer in subsurface and internal regions.
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Affiliation(s)
- Weihua Ji
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Na Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - He Zhu
- Department of Physics, City University of Hong Kong, Hong Kong 999077, China
| | - Kun Lin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jinxia Deng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jun Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
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34
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Ye J, Wang S, Li G, He B, Chen X, Cui Y, Zhao W, Sun J. Insight into the Morphology-Dependent Catalytic Performance of CuO/CeO 2 Produced by Tannic Acid for Efficient Hydrogenation of 4-Nitrophenol. Chem Asian J 2021; 16:3371-3384. [PMID: 34431617 DOI: 10.1002/asia.202100696] [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: 06/26/2021] [Revised: 08/03/2021] [Indexed: 11/08/2022]
Abstract
The construction of a heterogeneous nanocatalyst with outstanding catalytic performance via an environmentally benign and cost-effective synthetic category has long been one of the challenges in nanotechnology. Herein, we synthesized highly efficient and low-cost mesoporous morphology-dependent CuO/CeO2 -Rods and CuO/CeO2 -Cubes catalysts by employing a green and multifunctional polyphenolic compound (tannic acid) as the stabilizer and chelating agent for 4-nitrophenol (4-NP) reduction reaction. The CuO/CeO2 -Rods exhibited excellent performance, of which the activity was 3.2 times higher than that of CuO/CeO2 -Cubes. This can be connected with the higher density of oxygen vacancy on CeO2 -Rods (110) than CeO2 -Cubes (100), the oxygen vacancy favors anchoring CuO species on the CeO2 support, which promotes the strong interaction between finely dispersed CuO and CeO2 -Rods at the interfacial positions and facilitates the electron transfer from BH4 - to 4-NP. The synergistic catalytic mechanism illustrated that 4-NP molecules preferentially adsorbed on the CeO2 , while H2 from BH4 - dissociated over CuO to form highly active H* species, contributing to achieving efficient hydrogenation of 4-NP. This study is expected to shed light on designing and synthesizing cost-effective and high-performance nanocatalysts through a greener synthetic method for the areas of catalysis, nanomaterial science and engineering, and chemical synthesis.
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Affiliation(s)
- Junqing Ye
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Shuaijun Wang
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Gen Li
- School of Mechanical Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Bin He
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xinyan Chen
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yuandong Cui
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Wanting Zhao
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Jian Sun
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China.,Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
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35
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Gupta N, Bae J, Kim KS. From MOF-199 Microrods to CuO Nanoparticles for Room-Temperature Desulfurization: Regeneration and Repurposing Spent Adsorbents as Sustainable Approaches. ACS OMEGA 2021; 6:25631-25641. [PMID: 34632219 PMCID: PMC8495871 DOI: 10.1021/acsomega.1c03712] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 06/13/2023]
Abstract
MOF-199 is one of the well-studied metal-organic frameworks (MOFs) for the capture of small gas molecules. In this study, we have investigated the thermal transformation of MOF-199 microrods to CuO nanoparticles by various microscopic and spectroscopic techniques. The growth of oxide was initiated by the formation of ∼2.5 nm particles at 200 °C, which ended up as CuO nanoparticles of ∼100-250 nm size at 550 °C. An intermediate presence of Cu2O along with CuO was recorded at 280 °C. The MOF and calcined products were tested for the room-temperature desulfurization process. MOF-199 showed the maximum adsorption capacity for H2S gas (77.1 mg g-1) among all adsorbents studied. Also, MOF-199 showed a better regeneration efficiency than the derived oxide. For a sustainable process, the exhausted adsorbents were used for the photocatalytic degradation of methylene blue. The exhausted materials showed better degradation efficiencies than the fresh materials. This study reports new sustainable approaches for MOF-199 application in air and water decontamination.
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Affiliation(s)
- Nishesh
Kumar Gupta
- University
of Science and Technology (UST), Daejeon 34113, Republic
of Korea
- Department
of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Republic of Korea
| | - Jiyeol Bae
- University
of Science and Technology (UST), Daejeon 34113, Republic
of Korea
- Department
of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Republic of Korea
| | - Kwang Soo Kim
- University
of Science and Technology (UST), Daejeon 34113, Republic
of Korea
- Department
of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Republic of Korea
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36
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Zhao J, Bao J, Yang S, Niu Q, Xie R, Zhang Q, Chen M, Zhang P, Dai S. Exsolution–Dissolution of Supported Metals on High-Entropy Co 3MnNiCuZnO x: Toward Sintering-Resistant Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03228] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiahua Zhao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiafeng Bao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shize Yang
- Eyring Materials Center, Arizona State University, Tempe, Arizona 85287, United States
| | - Qiang Niu
- Inner Mongolia Erdos Power and Metallurgy Group Co., Ltd., Ordos 017010, Inner Mongolia, China
| | - Rongyong Xie
- Inner Mongolia Erdos Power and Metallurgy Group Co., Ltd., Ordos 017010, Inner Mongolia, China
| | - Qiuyue Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mingshu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Pengfei Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sheng Dai
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37921, United States
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge 37830, Tennessee, United States
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37
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Gu H, Liu X, Liu X, Ling C, Wei K, Zhan G, Guo Y, Zhang L. Adjacent single-atom irons boosting molecular oxygen activation on MnO 2. Nat Commun 2021; 12:5422. [PMID: 34521832 PMCID: PMC8440510 DOI: 10.1038/s41467-021-25726-w] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022] Open
Abstract
Efficient molecular oxygen activation is crucial for catalytic oxidation reaction, but highly depends on the construction of active sites. In this study, we demonstrate that dual adjacent Fe atoms anchored on MnO2 can assemble into a diatomic site, also called as MnO2-hosted Fe dimer, which activates molecular oxygen to form an active intermediate species Fe(O = O)Fe for highly efficient CO oxidation. These adjacent single-atom Fe sites exhibit a stronger O2 activation performance than the conventional surface oxygen vacancy activation sites. This work sheds light on molecular oxygen activation mechanisms of transition metal oxides and provides an efficient pathway to activate molecular oxygen by constructing new active sites through single atom technology.
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Affiliation(s)
- Huayu Gu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Xiao Liu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China.
| | - Xiufan Liu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Cancan Ling
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Kai Wei
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Guangming Zhan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Yanbing Guo
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 430079, Wuhan, P. R. China.
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38
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Mosrati J, Abdel-Mageed AM, Vuong TH, Grauke R, Bartling S, Rockstroh N, Atia H, Armbruster U, Wohlrab S, Rabeah J, Brückner A. Tiny Species with Big Impact: High Activity of Cu Single Atoms on CeO 2–TiO 2 Deciphered by Operando Spectroscopy. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02349] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jawaher Mosrati
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
- Laboratoire de chimie des matériaux et catalyse, Département de chimie, Faculté des sciences de Tunis, Université de Tunis el Manar, Tunis 1092, Tunisie
| | - Ali M. Abdel-Mageed
- Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Thanh Huyen Vuong
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Reni Grauke
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Stephan Bartling
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Nils Rockstroh
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Hanan Atia
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Udo Armbruster
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Sebastian Wohlrab
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
| | - Angelika Brückner
- Leibniz-Institut für Katalyse, Albert-Einstein-Str. 29A, 18059 Rostock, Germany
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Liu Z, Wang Q, Wu J, Zhang H, Liu Y, Zhang T, Tian H, Zeng S. Active Sites and Interfacial Reducibility of Cu xO/CeO 2 Catalysts Induced by Reducing Media and O 2/H 2 Activation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:35804-35817. [PMID: 34313106 DOI: 10.1021/acsami.1c09332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The development of a highly efficient and stable catalyst for preferential oxidation of CO for the commercialization of proton-exchange membrane fuel cells has been a result of continuous effort. The main challenge is the simultaneous control of abundant active sites and interfacial reducibility over the catalyst CuxO/CeO2. Here, we report a strategy to modulate porosity, active sites, and O-vacancy sites (OV) by reducing media and O2/H2 activation. O2-pretreated CeO2-supported Cu catalysts unequivocally demonstrate the low-temperature activity owing to the excess concentrations of Cu+ and Cu2+ as well as the relative population of Ce3+ and O-vacancy sites at the surface. O2 activation improves the Cu2+ diffusion into the CeO2 lattice to generate the synergistic effect and induces the formation of electron-enriched Cu2+-OV-Ce3+ sites, which accelerate the activation and dissociation of CO/O2 and the formation of reactive oxygen species during catalysis. Density function theory (DFT) calculations reveal that CO adsorbs on Cu2O {110} and CuO {111} with relatively optimal adsorption energy and longer C-Cu lengths in contrast to that on Cu {111}, favoring the adsorption and desorption of CO. These are crucial for ongoing CO oxidation, producing CO2 by the Mars-van Krevelen mechanism.
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Affiliation(s)
- Ze Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Qi Wang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jinfang Wu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Heng Zhang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Yang Liu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Tiantian Zhang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Haoyuan Tian
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Shanghong Zeng
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
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40
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Hussain I, Jalil AA, Hamid MYS, Hassan NS. Recent advances in catalytic systems in the prism of physicochemical properties to remediate toxic CO pollutants: A state-of-the-art review. CHEMOSPHERE 2021; 277:130285. [PMID: 33794437 DOI: 10.1016/j.chemosphere.2021.130285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Carbon monoxide (CO) is the most harmful pollutant in the air, causing environmental issues and adversely affecting humans and the vegetation and then raises global warming indirectly. CO oxidation is one of the most effective methods of reducing CO by converting it into carbon dioxide (CO2) using a suitable catalytic system, due to its simplicity and great value for pollution control. The CO oxidation reaction has been widely studied in various applications, including proton-exchange membrane fuel cell technology and catalytic converters. CO oxidation has also been of great academic interest over the last few decades as a model reaction. Many review studies have been produced on catalysts development for CO oxidation, emphasizing noble metal catalysts, the configuration of catalysts, process parameter influence, and the deactivation of catalysts. Nevertheless, there is still some gap in a state of the art knowledge devoted exclusively to synergistic interactions between catalytic activity and physicochemical properties. In an effort to fill this gap, this analysis updates and clarifies innovations for various latest developed catalytic CO oxidation systems with contemporary evaluation and the synergistic relationship between oxygen vacancies, strong metal-support interaction, particle size, metal dispersion, chemical composition acidity/basicity, reducibility, porosity, and surface area. This review study is useful for environmentalists, scientists, and experts working on mitigating the harmful effects of CO on both academic and commercial levels in the research and development sectors.
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Affiliation(s)
- I Hussain
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia.
| | - M Y S Hamid
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM, Johor Bahru, Johor, Malaysia
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM, Johor Bahru, Johor, Malaysia
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41
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Qiu Z, Guo X, Mao J, Zhou R. Elucidating the structure, redox properties and active entities of high-temperature thermally aged CuO x-CeO 2 catalysts for CO-PROX. Phys Chem Chem Phys 2021; 23:15582-15590. [PMID: 34259269 DOI: 10.1039/d1cp01798e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CuOx-CeO2 catalysts with different copper contents are synthesized via a coprecipitation method and thermally treated at 700 °C. Various characterization techniques including X-ray diffraction (XRD) Rietveld refinement, N2 adsorption-desorption isotherms, X-ray photoelectron spectra (XPS), UV-Raman, high-resolution transmission electron microscopy (HRTEM), temperature-programmed reduction (TPR) and in situ diffuse reflectance infrared Fourier transform spectra (DRIFTs) were adopted to investigate the structure/texture properties, oxygen vacancies, Cu-Ce interaction and redox properties of the catalysts. After the thermal treatment, the catalysts exhibited outstanding catalytic properties for the preferential oxidation (PROX) of CO (with the T50% of 62 °C and the widest operation temperature window of 85-140 °C), which provided a new strategy for the design of Cu-Ce based catalysts with high catalytic performance. The characterization results indicated that moderately elevating the copper content (below 5%) increases the amount of highly dispersed Cu species in the catalysts, including highly dispersed surface CuOx species and strongly bonded Cu-[Ox]-Ce species, strengthening the Cu-Ce interaction, increasing oxygen vacancies and promoting redox properties, but a further increase in copper content causes the agglomeration of crystalline CuO and decreases the highly dispersed Cu species. This work also provides evidence from the perspective that the catalytic performance of CuOx-CeO2 catalysts for CO-PROX at low and high reaction temperatures is dependent on the redox properties of highly dispersed CuOx species and strongly bonded Cu-[Ox]-Ce species, respectively.
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Affiliation(s)
- Zhihuan Qiu
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, P. R. China.
| | - Xiaolin Guo
- College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, P. R. China
| | - Jianxin Mao
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, P. R. China.
| | - Renxian Zhou
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, P. R. China.
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42
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Lei L, Zhang Y, Jiang Y, Xiong L, Liu Y, Li CM. Oxygen‐vacancy‐enhanced Catalytic Activity of Au@Co
3
O
4
/CeO
2
Yolk‐shell Nanocomposite to Electrochemically Detect Hydrogen Peroxide. ELECTROANAL 2021. [DOI: 10.1002/elan.202100249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lingli Lei
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
| | - Yuanyuan Zhang
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
| | - Ying Jiang
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
| | - Lulu Xiong
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
| | - Yingshuai Liu
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
| | - Chang Ming Li
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University) Ministry of Education School of Materials and Energy Southwest University Chongqing 400715 P. R. China
- School of Material Science and Engineering Institute of Materials Science and Devices Suzhou University of Science and Technology Suzhou 215011 P. R. China
- Institute of Advanced Cross-field Science and College of Life Science Qingdao University Qingdao 200671 P. R. China
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43
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Rodríguez SL, Davó-Quiñonero A, Juan-Juan J, Bailón-García E, Lozano-Castelló D, Bueno-López A. Effect of Pr in CO 2 Methanation Ru/CeO 2 Catalysts. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:12038-12049. [PMID: 34630817 PMCID: PMC8494384 DOI: 10.1021/acs.jpcc.1c03539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/18/2021] [Indexed: 06/13/2023]
Abstract
CO2 methanation has been studied with Pr-doped Ru/CeO2 catalysts, and a dual effect of Pr has been observed. For low Pr content (i.e., 3 wt %) a positive effect in oxygen mobility prevails, while for high Pr doping (i.e., 25 wt %) a negative effect in the Ru-CeO2 interaction is more relevant. Isotopic experiments evidenced that Pr hinders the dissociation of CO2, which takes place at the Ru-CeO2 interface. However, once the temperature is high enough (200 °C), Pr improves the oxygen mobility in the CeO2 support, and this enhances CO2 dissociation because the oxygen atoms left are delivered faster to the support sink and the dissociation sites at the interface are cleaned up faster. In situ Raman spectroscopy experiments confirmed that Pr improves the creation of oxygen vacancies on the ceria lattice but hinders their reoxidation by CO2, and both opposite effects reach an optimum balance for 3 wt % Pr doping. In addition, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments showed that Pr doping, regardless of the amount, decreases the population of surface carbon species created on the catalysts surface upon CO2 chemisorption under methanation reaction conditions, affecting both productive reaction intermediates (formates and carbonyls) and unproductive carbonates.
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Affiliation(s)
- Sergio López Rodríguez
- Inorganic Chemistry Department, University of Alicante, Carrertera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
| | - Arantxa Davó-Quiñonero
- Inorganic Chemistry Department, University of Alicante, Carrertera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Dublin, Ireland
| | - Jerónimo Juan-Juan
- Technical Research Services (SSTTI), University of Alicante, Carretera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
| | - Esther Bailón-García
- Inorganic Chemistry Department, University of Alicante, Carrertera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
| | - Dolores Lozano-Castelló
- Inorganic Chemistry Department, University of Alicante, Carrertera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
| | - Agustín Bueno-López
- Inorganic Chemistry Department, University of Alicante, Carrertera de San Vicente del Raspeig s/n, E-03080 Alicante, Spain
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44
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Davó-Quiñonero A, López-Rodríguez S, Bailón-García E, Lozano-Castelló D, Bueno-López A. Mineral Manganese Oxides as Oxidation Catalysts: Capabilities in the CO-PROX Reaction. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2021; 9:6329-6336. [PMID: 34567850 PMCID: PMC8461565 DOI: 10.1021/acssuschemeng.1c00343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/01/2021] [Indexed: 06/13/2023]
Abstract
Cryptomelane is an abundant mineral manganese oxide with unique physicochemical features. This work investigates the real capabilities of cryptomelane as an oxidation catalyst. In particular, the preferential CO oxidation (CO-PROX), has been studied as a simple reaction model. When doped with copper, the cryptomelane-based material has revealed a great potential, displaying a comparable activity to the high-performance CuO/CeO2. Despite stability concerns that compromise the primary catalyst reusability, CuO/cryptomelane is particularly robust in the presence of CO2 and H2O, typical components of realistic CO-PROX streams. The CO-PROX reaction mechanism has been assessed by means of isotopic oxygen pulse experiments. Altogether, CuO/CeO2 shows a greater oxygen lability, which facilitates lattice oxygen enrolment in the CO-PROX mechanism. In the case of CuO/cryptomelane, in spite of its lower oxygen mobility, the intrinsic structural water co-assists as active oxygen species involved in CO-PROX. Thus, the presence of moisture in the reaction stream turns out to be beneficial for the stability of the cryptomelane structure, besides aiding into the active oxygen restitution in the catalyst. Overall, this study proves that CuO/cryptomelane is a promising competitor to CuO/CeO2 in CO-PROX technology, whose implementation can bring the CO-PROX technology and H2 purification processes a more sustainable nature.
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45
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Ponnaiah SK, Prakash P, Balasubramanian J. Effective and reliable platform for nonenzymatic nanomolar-range quinol detection in water samples using ceria doped polypyrrole nanocomposite embedded on graphitic carbon nitride nanosheets. CHEMOSPHERE 2021; 271:129533. [PMID: 33421911 DOI: 10.1016/j.chemosphere.2021.129533] [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: 11/07/2020] [Revised: 12/18/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
A glassy carbon electrode modification by a novel ternary nanocomposite of advantageously united ceria, polypyrrole, and graphitic carbon nitride (CeO2/Ppy@g-C3N4) is reported here. It can be used to tailor the sensor surface for the electrochemical detection of nanomolar-level quinol (Qnl), a chemical widely used as a developing agent in photography and lithography, as a cosmetic, and as an antioxidant in rubber and food industries. The occupational exposure of Qnl may occur by inhalation or dermal contact, leading to lot of health hazards. The synthesized nanocomposite was characterized by various analytical techniques such as UV-Vis, Fourier transformed infrared (FTIR), X-ray powder diffraction, field emission scanning electron microscopy, high-resolution transmission electron microscopy, Raman, thermogravimetric analysis, energy-dispersive X-ray spectroscopy, selected area electron diffraction, and elemental mapping analyses. The oxidation current of Qnl is linear to its concentration in the range of 0.01-260 μM and the lowest detection and quantification limit are found to be 1.5 nM and 0.004 μM, respectively, with a sensitivity of 283.33 μA mM-1 cm-2. The performance of the modified electrode was compared with those of high-performance liquid chromatography, which indicates that the proposed sensor can be used as an effective and reliable platform for nano-molar detection of Qnl in various environmental and biological fluids.
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Affiliation(s)
- Sathish Kumar Ponnaiah
- Department of Chemistry, Thiagarajar College, Madurai, 625 009, Tamil Nadu, India; National Centre of Excellence, MHRD, Thiagarajar College, Madurai, 625 009, Tamil Nadu, India
| | - P Prakash
- Department of Chemistry, Thiagarajar College, Madurai, 625 009, Tamil Nadu, India.
| | - Jeyaprabha Balasubramanian
- Department of Civil Engineering, Sethu Institute of Technology, Virudhunagar, 626 115, Tamil Nadu, India
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46
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Sancheti SV, Yadav GD. CuO-ZnO-MgO as sustainable and selective catalyst towards synthesis of cyclohexanone by dehydrogenation of cyclohexanol over monovalent copper. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Liu L, Corma A. Structural transformations of solid electrocatalysts and photocatalysts. Nat Rev Chem 2021; 5:256-276. [PMID: 37117283 DOI: 10.1038/s41570-021-00255-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2021] [Indexed: 01/13/2023]
Abstract
Heterogeneous catalysts often undergo structural transformations when they operate under thermal reaction conditions. These transformations are reflected in their evolving catalytic activity, and a fundamental understanding of the changing nature of active sites is vital for the rational design of solid materials for applications. Beyond thermal catalysis, both photocatalysis and electrocatalysis are topical because they can harness renewable energy to drive uphill reactions that afford commodity chemicals and fuels. Although structural transformations of photocatalysts and electrocatalysts have been observed in operando, the resulting implications for catalytic behaviour are not fully understood. In this Review, we summarize and compare the structural evolution of solid thermal catalysts, electrocatalysts and photocatalysts. We suggest that well-established knowledge of thermal catalysis offers a good basis to understand emerging photocatalysis and electrocatalysis research.
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48
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Prabhakar Reddy K, Choi H, Kim D, Ryoo R, Park JY. Cu oxide deposited on shape-controlled ceria nanocrystals for CO oxidation: influence of interface-driven oxidation states on catalytic activity. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01269j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The polar CeO2 (100) surface facets contribute considerably to the formation of surface hydroxyl groups, which are necessary for selective, stable Cu1+ state loading and enhancement of CO oxidation activity.
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Affiliation(s)
- Kasala Prabhakar Reddy
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hanseul Choi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Daeho Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ryong Ryoo
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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49
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Liu J, Wang H, Ye R, Jian P, Wang L. Promotional effect of Mn-doping on the catalytic performance of NiO sheets for the selective oxidation of styrene. J Colloid Interface Sci 2020; 585:61-71. [PMID: 33279707 DOI: 10.1016/j.jcis.2020.11.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 02/08/2023]
Abstract
The direct oxidation of styrene into high-value chemicals under mild reaction conditions remains a great challenge in both academia and industry. Herein, we report a successful electronic structure modulation of intrinsic NiO sheets via Mn-doping towards the oxidation of styrene. By doping NiO with only a small content of Mn (Mn/Ni atomic ratio of 0.030), a 75.0% yield of STO can be achieved under the optimized reaction conditions, which is 2.13 times higher than that of the pure NiO. In addition, the catalyst exhibits robust stability and good recycling performance. The performance enhancement originates from the synergistic effect regarding the abundant Ni(II) species, the rich oxygen vacancy sites and the large amount of surface redox centers. This work provides new findings of the elemental-doping-induced multifunctionality in designing powerful catalysts for the efficient and selective oxidation of styrene and beyond.
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Affiliation(s)
- Jiangyong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Haiyang Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Rongfei Ye
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Panming Jian
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Lixia Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
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50
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Li X, Liu H, Sun Y, Zhu L, Yin X, Sun S, Fu Z, Lu Y, Wang X, Cheng Z. High Oxygen Evolution Activity of Tungsten Bronze Oxides Boosted by Anchoring of Co 2+ at Nb 5+ Sites Accompanied by Substantial Oxygen Vacancy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2002242. [PMID: 33240771 PMCID: PMC7675188 DOI: 10.1002/advs.202002242] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/12/2020] [Indexed: 06/01/2023]
Abstract
The participation of lattice oxygen in the oxygen evolution reaction (OER) process has been proved to be faster in kinetics than the mechanisms where only metal is involved, although activating the lattice oxygen in the traditional rigid structures remains a big challenge. In this work, efforts are devoted to exploring a new flexible structure that is competent in providing large amounts of oxygen vacancies as well as offering the freedom to manipulate the electronic structure of metal cations. This is demonstrated by anchoring low valence state Co at high valence state Nb sites in the tetragonal tungsten bronze (TTB)-structured Sr0.5Ba0.5Nb2- x Co x O6-δ , with different ratios of Co to Nb to optimize the Co substitution proportion. It is found that the occupation of Co in the Nb5+ sites gives rise to the generation of massive surface oxygen vacancies (Ovac), while Co itself is stabilized in Co2+ by adjacent Ovac. The coexistence of Ovac and LS Co2+ enables an oxygen intercalation mechanism in the optimal SBNC45 with specific activity at 1.7 V versus reversible hydrogen electrode that is 20 times higher than for the commercial IrO2. This work illuminates an entirely new avenue to rationally design OER electrocatalysts with ultrafast kinetics.
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Affiliation(s)
- Xiaoning Li
- Institute for Superconducting & Electronic Materials (ISEM)Australia Institute for Innovative MaterialsInnovation CampusUniversity of WollongongSquires WayNorth WollongongNSW2500Australia
| | - Huan Liu
- Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Yanhua Sun
- Institute for Superconducting & Electronic Materials (ISEM)Australia Institute for Innovative MaterialsInnovation CampusUniversity of WollongongSquires WayNorth WollongongNSW2500Australia
| | - Liuyang Zhu
- Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Xiaofeng Yin
- Henan Collaborative Innovation Center of Energy‐Saving Building MaterialsXinyang Normal UniversityXinyang464000P. R. China
| | - Shujie Sun
- Henan Collaborative Innovation Center of Energy‐Saving Building MaterialsXinyang Normal UniversityXinyang464000P. R. China
| | - Zhengping Fu
- Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Yalin Lu
- Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei230026P. R. China
| | - Xiaolin Wang
- Institute for Superconducting & Electronic Materials (ISEM)Australia Institute for Innovative MaterialsInnovation CampusUniversity of WollongongSquires WayNorth WollongongNSW2500Australia
| | - Zhenxiang Cheng
- Institute for Superconducting & Electronic Materials (ISEM)Australia Institute for Innovative MaterialsInnovation CampusUniversity of WollongongSquires WayNorth WollongongNSW2500Australia
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