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Sun P, Gracia-Espino E, Tan F, Zhang H, Kong Q, Hu G, Wågberg T. Treasure-bowl style bifunctional site in cerium-tungsten hetero-clusters for superior solar-driven hydrogen production. MATERIALS HORIZONS 2024; 11:3892-3902. [PMID: 38807553 DOI: 10.1039/d4mh00111g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Electrochemical water splitting powered by renewable energy sources hold potential for clean hydrogen production. However, there is still persistent challenges such as low solar-to-hydrogen conversion efficiency and sluggish oxygen evolution reactions. Here, we address the poor kinetics by studying and strengthening the coupling between Ce and W, and concurrently establishing Ce-W bi-atomic clusters on P,N-doped carbon (WN/WC-CeO2-x@PNC) with a "treasure-bowl" style. The bifunctional active sites are established using a novel and effective self-sacrificial strategy involving in situ induced defect formation. In addition, by altering the coupling of the W(d)-N(p) and W(d)-Ce(f) orbitals in the WN/WC-CeO2-x supramolecular clusters, we are able to disrupt the linear relationship between the binding energies of reaction intermediates, a key to obtain high catalytic performance for transition metals. Through the confinement of the WN/WC-CeO2-x composite hetero-clusters within the sub-nanometre spaces of hollow nano-bowl-shaped carbon reactors, a stable and efficient hydrogen production via water electrolysis could be achieved. When assembled together with a solar GaAs triple junction solar cell, a solar-to-hydrogen conversion efficiency of 18.92% in alkaline media could be realized. We show that the key to establish noble metal free catalysts with high efficiency lies in the fine-tuning of the metal-metal interface, forming regions with near optimal adsorption energies for the reaction intermediates participating in water electrolysis.
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Affiliation(s)
- Pengliang Sun
- Donghai Laboratory, Zhoushan 316021, China.
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | | | - Fang Tan
- Donghai Laboratory, Zhoushan 316021, China.
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Hua Zhang
- Donghai Laboratory, Zhoushan 316021, China.
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Qingquan Kong
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Guangzhi Hu
- Donghai Laboratory, Zhoushan 316021, China.
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Thomas Wågberg
- Department of Physics, Umeå University, Umeå S-90187, Sweden.
- Wallenberg Initiative Material Science for Sustainability, Department of Physics, Umeå University, Umeå S-901 87, Sweden
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2
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Jiang Z, Fang D, Liang Y, He Y, Einaga H, Shangguan W. Catalytic degradation of benzene over non-thermal plasma coupled Co-Ni binary metal oxide nanosheet catalysts. J Environ Sci (China) 2023; 132:1-11. [PMID: 37336600 DOI: 10.1016/j.jes.2022.09.030] [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: 06/26/2022] [Revised: 09/09/2022] [Accepted: 09/20/2022] [Indexed: 06/21/2023]
Abstract
Non-thermal plasma (NTP) has been demonstrated as one of the promising technologies that can degrade volatile organic compounds (VOCs) under ambient condition. However, one of the key challenges of VOCs degradation in NTP is its relatively low mineralization rate, which needs to be addressed by introducing catalysts. Therefore, the design and optimization of catalysts have become the focus of NTP coupling catalysis research. In this work, a series of two-dimensional nanosheet Co-Ni metal oxides were synthesized by microwave method and investigated for the catalytic oxidation of benzene in an NTP-catalysis coupling system. Among them, Co2Ni1Ox achieves 60% carbon dioxide (CO2) selectivity (SCO2) when the benzene removal efficiency (REbenzene) reaches more than 99%, which is a significant enhancement compared with the CO2 selectivity obtained without any catalysts (38%) under the same input power. More intriguingly, this SCO2 is also significantly higher than that of single metal oxides, NiO or Co3O4, which is only around 40%. Such improved performance of this binary metal oxide catalyst is uniquely attributed to the synergistic effects of Co and Ni in Co2Ni1Ox catalyst. The introduction of Co2Ni1Ox was found to promote the generation of acrolein significantly, one of the key intermediates found in NTP alone system reported previously, suggest the benzene ring open reaction is promoted. Compared with monometallic oxides NiO and Co3O4, Co2Ni1Ox also shows higher active oxygen proportion, better oxygen mobility, and stronger low-temperature redox capability. The above factors result in the improved catalytic performance of Co2Ni1Ox in the NTP coupling removal of benzene.
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Affiliation(s)
- Zhi Jiang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Dongxu Fang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuting Liang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yaoyu He
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hisahiro Einaga
- Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Wenfeng Shangguan
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
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3
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Inhibition to dual enzyme-like activities of Ag/CeO2 nanozymes for the detection of thiourea. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Wang Y, Wang R. Effects of chemical etching and reduction activation of CeO 2 nanorods supported ruthenium catalysts on CO oxidation. J Colloid Interface Sci 2022; 613:836-846. [PMID: 35091258 DOI: 10.1016/j.jcis.2022.01.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/09/2022] [Accepted: 01/09/2022] [Indexed: 10/19/2022]
Abstract
In this work, pristine and NaBH4 etched CeO2 nanorods supported ruthenium (Ru) catalysts were synthesized and employed to investigate the effects of chemical etching and reduction activation treatment on CO oxidation. With 1 wt% Ru loading, the CeO2 nanorods supported catalyst samples, after 6 wt% NaBH4 etching treatment, showed significantly promoted H2 consumption under 100 °C and low apparent activation energy (i.e., Ea ∼ 31.2 kJ/mol) for CO oxidation. In-situ CO-DRIFTS profiles revealed that, for the reduced sample, the observed CO adsorption at ∼ 2020 cm-1 at 40 °C may be related to a strong RuOx-CeO2 interaction induced by the NaBH4 etching treatment, which was supported by the oxygen vacancy analysis results of X-ray photoelectron spectroscopy and CO-temperature programmed desorption. The enriched surface defects on CeO2 support due to the chemical etching and reduction treatments are believed to promote the interaction between RuOx species and CeO2, which is responsible for the enhanced activity of CO oxidation.
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Affiliation(s)
- Yifan Wang
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States
| | - Ruigang Wang
- Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States.
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5
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Construction of mesoporous ceria-supported gold catalysts with rich oxygen vacancies for efficient CO oxidation. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Effect of Ag loading on praseodymium doped ceria catalyst for soot oxidation activity. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-0933-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Broccoli-like CeO2 with Hierarchical/Porous Structures, and promoted oxygen vacancy as an enhanced catalyst for catalytic diesel soot elimination. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119867] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Wang Y, Bi F, Wang Y, Jia M, Tao X, Jin Y, Zhang X. MOF-derived CeO2 supported Ag catalysts for toluene oxidation: The effect of synthesis method. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111922] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Enhanced Catalytic Soot Oxidation by Ce-Based MOF-Derived Ceria Nano-Bar with Promoted Oxygen Vacancy. Catalysts 2021. [DOI: 10.3390/catal11091128] [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
As CeO2 is a useful catalyst for soot elimination, it is important to develop CeO2 with higher contact areas, and reactivities for efficient soot oxidation and catalytic soot oxidation are basically controlled by structures and surface properties of catalysts. Herein, a Ce-Metal organic framework (MOFs) consisting of Ce and benzene-1,3,5-tricarboxylic acid (H3BTC) is employed as the precursor as CeBTC exhibits a unique bar-like high-aspect-ratio morphology, which is then transformed into CeO2 with a nanoscale bar-like configuration. More importantly, this CeO2 nanobar (CeONB) possesses porou, and even hollow structures, as well as more oxygen vacancies, enabling CeONB to become a promising catalyst for soot oxidation. Thus, CeONB shows a much higher catalytic activity than commercial CeO2 nanoparticle (comCeO) for soot oxidation with a significantly lower ignition temperature (Tig). Moreover, while soot oxidation by comCeO leads to production of CO together with CO2, CeONB can completely convert soot to CO2. The tight contact mode also enables CeONB to exhibit a very low Tig of 310 °C, whereas the existence of NO also enhances the soot oxidation by CeONB to reduce the Tig. The mechanism of NO-assisted soot oxidation is also examined, and validated by DRIFTS to identify the formation and transformation of nitrogen-containing intermediates. CeONB is also recyclable over many consecutive cycles and maintained its high catalytic activity for soot oxidation. These results demonstrate that CeONB is a promising and easily prepared high-aspect-ratio Ce-based catalyst for soot oxidation.
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10
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Seo Y, Lee MW, Kim HJ, Choung JW, Jung C, Kim CH, Lee KY. Effect of Ag doping on Pd/Ag-CeO 2 catalysts for CO and C 3H 6 oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125373. [PMID: 33765567 DOI: 10.1016/j.jhazmat.2021.125373] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/15/2021] [Accepted: 02/07/2021] [Indexed: 06/12/2023]
Abstract
To achieve high fuel efficiency and low emission in automobiles, it is necessary to develop highly active diesel oxidation catalysts (DOCs). Pd/CeO2 catalysts have been widely used as active catalysts for CO and C3H6 oxidation reactions. Additionally, Ag has been reported to enhance the oxygen storage capacity (OSC) of CeO2, which contributes to the oxidation ability of Pd/CeO2. In this study, Pd/Ag-CeO2 catalysts were used for CO and C3H6 oxidation reactions. When CeO2 was doped with appropriate amounts of Ag, reducibility and CO desorption rate were increased, which confirmed the high OSCs of Ag-doped catalysts. However, Ag particles were formed and the Ce3+/Ce4+ ratio decreased when CeO2 was doped with excess amounts of Ag. In addition, reduced Pd (Pd0), which is an active species for C3H6 oxidation, was formed and maintained even under oxidative reaction conditions. Since the removal of C3H6 is important for the oxidation of CO and C3H6, the catalyst with the highest Pd0 fraction (Pd/0.1Ag-CeO2 and Pd/0.3Ag-CeO2) presented improved catalytic activity. Consequently, the optimal amount of Ag enhanced the OSC of Pd/Ag-CeO2 catalysts and formed active Pd0 species under oxidative conditions, which resulted in the excellent catalytic activity of Pd/Ag-CeO2 for the CO and C3H6 oxidation reaction.
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Affiliation(s)
- Yaeun Seo
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-Gu, Seoul 02841, South Korea
| | - Min Woo Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-Gu, Seoul 02841, South Korea
| | - Hyun Jae Kim
- Central Technology R&D Institute, Hyundai Oilbank Co., Ltd, 17-10 Mabok-ro 240beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do 16891, South Korea
| | - Jin Woo Choung
- Energy & Environmental Chemical Systems Lab, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-Do 16082, South Korea
| | - ChangHo Jung
- Energy & Environmental Chemical Systems Lab, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-Do 16082, South Korea
| | - Chang Hwan Kim
- Energy & Environmental Chemical Systems Lab, Hyundai Motor Group, 37, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-Do 16082, South Korea
| | - Kwan-Young Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-Gu, Seoul 02841, South Korea; Super Ultra Low Energy and Emission Vehicle (SULEEV) Center, Korea University, 145 Anam-ro, Seongbuk-Gu, Seoul 02841, South Korea; Graduate School of Energy and Environment (KU-KIST Green School), Korea University, Seoul 02841, South Korea.
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11
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Zhao G, Tan Q, Li C, Shang L, Zhang D, Lu X, Qiu F. Silver/silver halide supported on mesoporous ceria particles and photo-CWPO degradation under visible light for organic compounds in acrylonitrile wastewater. RSC Adv 2021; 11:26791-26799. [PMID: 35479982 PMCID: PMC9037738 DOI: 10.1039/d1ra04465f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/14/2021] [Indexed: 11/21/2022] Open
Abstract
Silver/silver halide supported on ordered mesoporous ceria particles (Ag/AgCl/CeO2) were rapidly prepared by microwave-assisted soft template method, deposition precipitation method and photoreduction method, using cerium nitrate and silver nitrate as raw materials and block copolymer F127 as a template. The morphology, structure and chemical composition of the catalyst were characterized by XRD, SEM, EDS, TEM, N2 adsorption-desorption and UV-Vis Drs. Catalytic wet peroxide system assisted with visible light photocatalysis (photo-CWPO) was conducted to investigate the performance of organics degradation by Ag/AgCl/CeO2 as a catalyst in acrylonitrile wastewater. The results showed that the Ag/AgCl/CeO2 prepared has an ordered mesoporous structure, Ag and AgCl are formed on the surface of CeO2, with a specific surface area of 302.6-336.2 m2 g-1 and the average pore size is 8.04-8.90 nm. There is a strong absorption in the visible region and a band gap of 2.9 eV. The Ag/AgCl/CeO2 catalyst has higher catalytic performance in the photo-CWPO system than in the CWPO system alone. Ag loading, catalyst and H2O2 dosage, and pH value can affect the COD removal. When the concentration of COD in acrylonitrile wastewater was 500 mg L-1, the amount of catalyst was 200 mg, the amount of H2O2 (30%) was 8 mL, and the reaction time was 60 min, the COD removal reached 90%.
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Affiliation(s)
- Guozheng Zhao
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Qingwei Tan
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Changbo Li
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Liyan Shang
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Daihang Zhang
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Xuanxuan Lu
- Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Feng Qiu
- Liaoning Petrochemical University Fushun Liaoning 113001 China
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12
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Abstract
The energy efficiency of Gasoline Direct Injection (GDI) engines is leading to a continuous increase in GDI engine vehicle population. Consequently, their particulate matter (soot) emissions are also becoming a matter of concern. As required for diesel engines, to meet the limits set by regulations, catalyzed particulate filters are considered as an effective solution through which soot could be trapped and burnt out. However, in contrast to diesel application, the regeneration of gasoline particulate filters (GPF) is critical, as it occurs with almost an absence of NOx and under oxygen deficiency. Therefore, in the recent years it was of scientific interest to develop efficient soot oxidation catalysts that fit such particular gasoline operating conditions. Among them ceria- and perovskite-based formulations are emerging as the most promising materials. This overview summarizes the very recent academic contributions focusing on soot oxidation materials for GDI, in order to point out the most promising directions in this research area.
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13
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Chen L, Li T, Zhang J, Wang J, Chen P, Fu M, Wu J, Ye D. Chemisorbed Superoxide Species Enhanced the High Catalytic Performance of Ag/Co 3O 4 Nanocubes for Soot Oxidation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21436-21449. [PMID: 33929836 DOI: 10.1021/acsami.1c03935] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The respective action mode between surface-adsorbed oxygen and bulk lattice oxygen during catalytic soot oxidation is still not fully recognized. Herein, a series of Ag-loaded Co3O4 catalysts with different Ag loading amounts were prepared by the impregnation method, and 5% Ag/Co3O4 presented competitive catalytic activity toward soot combustion with a T50 below 290 °C in 10% O2/N2. This remarkable improvement in catalytic performance could be primarily attributed to the enhanced Ag-Co3O4 metal-support interaction induced by the formation of uniform, dispersive, and suitable size metallic Ag nanoparticles. The activation, activity, consumption-regeneration, identification, and reaction of surface-adsorbed oxygen along with the activity of bulk lattice oxygen were characterized by various designed and in situ techniques. The results demonstrated that the chemisorbed superoxide species (O2-) play the potentially responsible role for boosting soot combustion, while the bulk lattice oxygen is much less active within the tested temperatures, inducing a negligible activity contribution. Moreover, soot-temperature programmed reduction, isothermal kinetic study, and density functional theory calculation provided supplementary support for the enhancement effect of Ag-Co3O4 combination in the activation and utilization of surface-adsorbed oxygen. The overall objective of this work is to identify the role of surface-adsorbed oxygen and bulk lattice oxygen for soot oxidation over Ag/Co3O4 catalysts.
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Affiliation(s)
- Longwen Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), Guangzhou 510640, China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou 510640, China
| | - Tan Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
| | - Jun Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), Guangzhou 510640, China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou 510640, China
| | - Jing Wang
- School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), Guangzhou 510640, China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou 510640, China
| | - Peirong Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 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
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 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
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), 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
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT), Guangzhou 510640, China
- National Engineering Laboratory for VOCs Pollution Control Technology and Equipment (SCUT), Guangzhou 510640, China
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14
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Feng X, Zhang S, Wang F, Ma J, Xu X, Lai Q, Xu J, Fang X, Wang X. Metallic Ag Confined on SnO
2
Surface for Soot Combustion: the Influence of Ag Distribution and Dispersion on the Reactivity. ChemCatChem 2021. [DOI: 10.1002/cctc.202100041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaohui Feng
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Shijing Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Fumin Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Jun Ma
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Qiang Lai
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
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Zhao G, Liang H, Xu H, Li C, Tan Q, Zhang D. Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO 2: synthesis, performance and kinetics. RSC Adv 2021; 11:15959-15968. [PMID: 35481213 PMCID: PMC9030448 DOI: 10.1039/d1ra01258d] [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: 02/16/2021] [Accepted: 03/12/2021] [Indexed: 11/28/2022] Open
Abstract
Ordered mesoporous Ag/CeO2 catalysts have been successfully synthesized by a microwave assisted soft template method. The morphology, structure and chemical composition of the catalyst were characterized by XRD, N2 adsorption-desorption, SEM, EDS, TEM and XPS. The study of catalytic performance and reaction kinetics of organic matter degradation in acrylonitrile wastewater was performed in a catalytic wet peroxide (CWPO) system. The degradation pathways of organic matter in acrylonitrile wastewater were elucidated by temporal evolution of intermediates and final products detected by GC/MS analysis along with a continuous flow experiment study. The results show that the Ag/CeO2 has an ordered mesoporous structure, the specific surface area is 91.4-118.2 m2 g-1 and the average pore size is 12.63-16.86 nm. 0.4-Ag/CeO2 showed the best catalytic performance, the COD removal rate reached 94.6%, which was 30% higher than that of CeO2. The degradation is in accordance with the second-order reaction kinetics of the Arrhenius empirical model and Langmuir-Hinshelwood kinetic model. However the latter fits better, and the linear correlation coefficient R 2 is more than 0.98, which describes the adsorption catalytic mechanism of Ag/CeO2. According to the analysis by GC/MS, the organic compounds in acrylonitrile wastewater oxidized into intermediate compounds and other small compounds, then are further oxidized into carbon dioxide and water. The catalytic activity of Ag/CeO2 was the result of the combination of Lewis acid-base position of CeO2 and redox cycle of Ce3+/Ce4+.
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Affiliation(s)
- Guozheng Zhao
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
| | - Hui Liang
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
| | - Hongzhu Xu
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
| | - Changbo Li
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
| | - Qingwei Tan
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
| | - Daihang Zhang
- School of Environmental & Safety Engineering, Liaoning Petrochemical University Liaoning Fushun 113001 China
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16
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Li H, Chen S, Shang H, Wang X, Yang Z, Ai Z, Zhang L. Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis. Sci Bull (Beijing) 2020; 65:1916-1923. [PMID: 36738057 DOI: 10.1016/j.scib.2020.06.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/16/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023]
Abstract
Rational engineering of oxygen vacancy (VO) at atomic precision is the key to comprehensively understanding the oxygen chemistry of oxide materials for catalytic oxidations. Here, we demonstrate that VO can be spatially confined on the surface through a sophisticated surface hydrogen bond (HB) network. The HB network is constructed between a hydroxyl-rich BiOCl surface and polyprotic phosphoric acid, which remarkably decreases the formation energy of surface VO by selectively weakening the metal-oxygen bonds in a short range. Thus, surface-confined VO enables us to unambiguously distinguish the intrafacial and suprafacial oxygen species associated with NO oxidation in two classical catalytic systems. Unlike randomly distributed bulk VO that benefits the thermocatalytic NO oxidation and lattice O diffusion by the dominant intrafacial mechanism, surface VO is demonstrated to favor the photocatalytic NO oxidation through a suprafacial scheme by energetically activating surface O2, which should be attributed to the spatial confinement nature of surface VO.
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Affiliation(s)
- Hao Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Shang Chen
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Huan Shang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xiaobing Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Zhiping Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Zhihui Ai
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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17
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Potential of Ceria-Zirconia-Based Materials in Carbon Soot Oxidation for Gasoline Particulate Filters. Catalysts 2020. [DOI: 10.3390/catal10070768] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
ZrO2 and Ce0.8Zr0.2O2 mixed oxides were prepared and tested in the oxidation of carbon soot at different oxygen partial pressures and degrees of catalyst/soot contact to investigate their activity under typical gasoline direct injection (GDI) operating conditions. Under reductive atmospheres, generation of oxygen vacancies occurs in Ce0.8Zr0.2O2, while no reduction is observed on ZrO2. Both materials can oxidize carbon under high oxygen partial pressures; however, at low oxygen partial pressures, the presence of carbon can contribute to the reduction of the catalyst and formation of oxygen vacancies, which can then be used for soot oxidation, increasing the overall performance. This mechanism is more efficient in Ce0.8Zr0.2O2 than ZrO2, and depends heavily on the interaction and the degree of contact between soot and catalyst. Thus, the ability to form oxygen vacancies at lower temperatures is particularly helpful to oxidize soot at low oxygen partial pressures, and with higher CO2 selectivity under conditions typically found in GDI engine exhaust gases.
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18
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Huang H, Zhang X, Liu J, Ye S. Study on oxidation activity of Ce-Mn-K composite oxides on diesel soot. Sci Rep 2020; 10:10025. [PMID: 32572132 PMCID: PMC7308348 DOI: 10.1038/s41598-020-67335-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/04/2020] [Indexed: 11/09/2022] Open
Abstract
As an effective method, diesel particulate filter (DPF) technology has a great contribution in reducing soot emissions from diesel engines. To achieve passive regeneration of DPF at low temperatures, K-doped Ce0.5Mn0.5O2 catalysts were synthesized using sol–gel method. The effect of K-doped catalysts-Kz–Ce0.5Mn0.5O2-on the oxidation of soot had been studied by thermogravimetric analysis, and the corresponding catalytic properties were evaluated based on X-ray diffraction (XRD), hydrogen temperature programmed reduction (H2-TPR), O2 temperature programmed desorption (O2-TPD) Raman spectroscopy (Raman), Brunauer–Emmett–Teller (BET) and Fourier-Transform-Infrared (FTIR).The results showed that K doping facilitated the oxidation of diesel particulate matter, which was indicated by the entire mass loss curve shifting to lower temperatures. K0.2–Ce0.5Mn0.5O2 showed the best performance among the series of K-doped catalysts. Compared with the findings for Ce0.5Mn0.5O2, the ignition temperature of soot oxidation (Ti) had been lowered by 28 ℃, and the maximum peak combustion temperature (Tm) of the dry soot decreased by 61 °C. Furthermore, compared with the Ce0.5Mn0.5O2-catalyzed reaction, K doping led to a lower activation energy and significantly improved pre-exponential factor. The minimum reaction activation energy of 27.46 kJ/mol was exhibited by K0.2–Ce0.5Mn0.5O2.
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Affiliation(s)
- He Huang
- School of Traffic Engineering, Nanjing Institute of Industry Technology, Nanjing, 210046, China.
| | - Xiao Zhang
- Zhenjiang Campus, Army Military Transportation University of PLA, Zhenjiang, 212000, China
| | - Junheng Liu
- School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Song Ye
- SAIC Volkswagen Automotive Company Limited, Shanghai, 201800, China
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19
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Sorolla‐Rosario D, Davó‐Quiñonero A, Bailón‐García E, Lozano‐Castelló D, Bueno‐López A. Key‐lock Ceria Catalysts for the Control of Diesel Engine Soot Particulate Emissions. ChemCatChem 2020. [DOI: 10.1002/cctc.201902177] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Débora Sorolla‐Rosario
- Department of Inorganic ChemistryUniversity of Alicante Carretera de San Vicente s/n Alicante E03080 Spain
| | - Arantxa Davó‐Quiñonero
- Department of Inorganic ChemistryUniversity of Alicante Carretera de San Vicente s/n Alicante E03080 Spain
| | - Esther Bailón‐García
- Department of Inorganic ChemistryUniversity of Alicante Carretera de San Vicente s/n Alicante E03080 Spain
| | - Dolores Lozano‐Castelló
- Department of Inorganic ChemistryUniversity of Alicante Carretera de San Vicente s/n Alicante E03080 Spain
| | - Agustín Bueno‐López
- Department of Inorganic ChemistryUniversity of Alicante Carretera de San Vicente s/n Alicante E03080 Spain
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20
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Tsai YC, Huy NN, Tsang DC, Lin KYA. Metal organic framework-derived 3D nanostructured cobalt oxide as an effective catalyst for soot oxidation. J Colloid Interface Sci 2020; 561:83-92. [DOI: 10.1016/j.jcis.2019.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 10/25/2022]
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21
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Ashikaga R, Murata K, Ito T, Yamamoto Y, Arai S, Satsuma A. Tuning the oxygen release properties of CeO 2-based catalysts by metal–support interactions for improved gasoline soot combustion. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01294g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
CeO2-supported Cu and Rh catalysts showed high soot combustion activities by their high oxygen release properties depending on moderate metal–oxygen bond energy.
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Affiliation(s)
- Ryota Ashikaga
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Kazumasa Murata
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Tetsuya Ito
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Yuta Yamamoto
- Institute of Materials and Systems for Sustainability
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Shigeo Arai
- Institute of Materials and Systems for Sustainability
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Atsushi Satsuma
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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22
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Zhang X, Wang D, Jing M, Liu J, Zhao Z, Xu G, Song W, Wei Y, Sun Y. Ordered Mesoporous CeO
2
‐supported Ag as an Effective Catalyst for Carboxylative Coupling Reaction Using CO
2. ChemCatChem 2019. [DOI: 10.1002/cctc.201900039] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xiao Zhang
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Dingkun Wang
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Meizan Jing
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Jian Liu
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Zhen Zhao
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Guanhua Xu
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Weiyu Song
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Yuechang Wei
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
| | - Yuanqing Sun
- College of Science, State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-Beijing 18 Fuxue Road, Changping Beijing China
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23
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Abstract
Nowadays catalytic technologies are widely used to purify indoor and outdoor air from harmful compounds. Recently, Ag–CeO2 composites have found various applications in catalysis due to distinctive physical-chemical properties and relatively low costs as compared to those based on other noble metals. Currently, metal–support interaction is considered the key factor that determines high catalytic performance of silver–ceria composites. Despite thorough investigations, several questions remain debating. Among such issues, there are (1) morphology and size effects of both Ag and CeO2 particles, including their defective structure, (2) chemical and charge state of silver, (3) charge transfer between silver and ceria, (4) role of oxygen vacancies, (5) reducibility of support and the catalyst on the basis thereof. In this review, we consider recent advances and trends on the role of silver–ceria interactions in catalytic performance of Ag/CeO2 composites in low-temperature CO oxidation, soot oxidation, and volatile organic compounds (VOCs) abatement. Promising photo- and electrocatalytic applications of Ag/CeO2 composites are also discussed.
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