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Huang Z, Li H, Zhang X, Mao Y, Wu Y, Liu W, Gao H, Zhang M, Song Z. Catalytic oxidation of toluene by manganese oxides: Effect of K + doping on oxygen vacancy. J Environ Sci (China) 2024; 142:43-56. [PMID: 38527895 DOI: 10.1016/j.jes.2023.07.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 03/27/2024]
Abstract
Alkali metal potassium was beneficial to the electronic regulation and structural stability of transition metal oxides. Herein, K ions were introduced into manganese oxides by different methods to improve the degradation efficiency of toluene. The results of activity experiments indicated that KMnO4-HT (HT: Hydrothermal method) exhibited outstanding low-temperature catalytic activity, and 90% conversion of toluene can be achieved at 243°C, which was 41°C and 43°C lower than that of KNO3-HT and Mn-HT, respectively. The largest specific surface area was observed on KMnO4-HT, facilitating the adsorption of toluene. The formation of cryptomelane structure over KMnO4-HT could contribute to higher content of Mn3+ and lattice oxygen (Olatt), excellent low-temperature reducibility, and high oxygen mobility, which could increase the catalytic performance. Furthermore, two distinct degradation pathways were inferred. Pathway Ⅰ (KMnO4-HT): toluene → benzyl → benzoic acid → carbonate → CO2 and H2O; Pathway ⅠⅠ (Mn-HT): toluene → benzyl alcohol → benzoic acid → phenol → maleic anhydride → CO2 and H2O. Fewer intermediates were detected on KMnO4-HT, indicating its stronger oxidation capacity of toluene, which was originated from the doping of K+ and the interaction between KOMn. More intermediates were observed on Mn-HT, which can be attributed to the weaker oxidation ability of pure Mn. The results indicated that the doping of K+ can improve the catalytic oxidation capacity of toluene, resulting in promoted degradation of intermediates during the oxidation of toluene.
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Affiliation(s)
- Zhenzhen Huang
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan 467036, China
| | - Haiyang Li
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xuejun Zhang
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
| | - Yanli Mao
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan 467036, China
| | - Yinghan Wu
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Wei Liu
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Hongrun Gao
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Mengru Zhang
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Zhongxian Song
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan 467036, China.
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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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Wang HJ, Yang HH, Li Z, Shen X, Chen TY, Zhan J, Zhou H, Yi X, Zhang SY, Liu Y. Surficial engineering of active hydroxyls for ambient formaldehyde oxidation via enhanced Lewis acidity over Zr-doped cryptomelane materials. ENVIRONMENTAL RESEARCH 2024; 247:118255. [PMID: 38266890 DOI: 10.1016/j.envres.2024.118255] [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: 09/27/2023] [Revised: 11/21/2023] [Accepted: 12/11/2023] [Indexed: 01/26/2024]
Abstract
Lewis acids of solid catalysts have been featured for a pivotal role in promoting various reactions. Regarding the oxidation protocol to remove formaldehyde, the inherent drawback of the best-studied MnO2 materials in acidic sites has eventually caused deficiency of active hydroxyls to sustain low-temperature activity. Herein, the cryptomelane-type MnO2 was targeted and it was tuned via incorporation of Zr metal, exhibiting great advances in not only the complete HCHO-to-CO2 degradation but also cycling performance. Zr species were existent in doping state in the MnO2 lattice, rendering lower crystallinity and breaking the regular growth of MnO2 crystallites, which thereby tripled surface area and created larger volume of smaller mesopores. Meantime, the local electronic properties of Mn atoms were also changed by Zr doping, i.e., more low-valence Mn species were formed due to the electron transfer from Zr to Mn. The results of infrared studies demonstrate the higher possession of Lewis acid sites on ZrMn, and this high degree of electrophilic agents favored the production of hydroxyl species. Furthermore, the reactivity of surface hydroxyls, as investigated by CO temperature programmed reduction and temperature programmed desorption of adsorbed O2, was obviously improved as well after Zr modification. It is speculated jointly with the characterizations of the post-reaction catalysts that the accelerated production of active hydroxyls helped rapidly convert formaldehyde into key intermediate-formate, which was then degraded into CO2, avoiding the side reaction path with undesired intermediate-hydrocarbonate-over the pristine MnO2, where active sites were blocked and formaldehyde oxidation was inhibited. Additionally, Zr decoration could stabilize Lewis acidity to be more resistant to heat degeneration, and this merit brought about advantageous thermal recyclability for cycled application.
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Affiliation(s)
- Hui-Jun Wang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Huan-Huan Yang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Zhonghong Li
- Yingkou Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yingkou, 115004, China.
| | - Xudong Shen
- Yingkou Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yingkou, 115004, China.
| | - Tian-Yun Chen
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Jingjing Zhan
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Hao Zhou
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Xianliang Yi
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Shi-Yu Zhang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
| | - Yang Liu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin, 124221, China.
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Wang C, Chen H, Deng J, Li L, Zeng Z, Ma X, Wei S. Enhanced ability of toluene oxidation by controlling inversion degree of spinel composed of only Co, Mn. J Colloid Interface Sci 2024; 658:943-951. [PMID: 38157618 DOI: 10.1016/j.jcis.2023.12.147] [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: 09/12/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
Exploring the single relationship between the inversion degree of spinel and its catalytic performance is a great challenge, but has important significance for further structural design and application. A series of CoMn inverse spinels were prepared and the general formula [Formula: see text] was deduced through X-ray diffraction refinement to find a decreased inversion degree x as calcination temperature rose. Catalytic oxidation of toluene showed that higher inversion degree (S-300 with x ≈ 0.95) can reach larger conversion rate (90 % at about 250 °C for 400 ppm toluene) with greater reaction stability (140 h). Density Functional Theory (DFT) calculations on density of states indicated its metallic nature, and found that the strength of O-p and Transition metal-d orbitals at Fermi energy is positively correlated to the inversion degree, meaning stronger electron migration ability. Along with the adsorption calculation analysis that lattice oxygen species are proved to work dominantly (S-300 with lowest adsorption energy but highest performance), this work uncovered a theoretical insight into inverse spinel oxide, to provide the possibility of elevated oxidation ability through structural control.
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Affiliation(s)
- Chunhao Wang
- School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, China.
| | - Haipeng Chen
- School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, China
| | - Jian Deng
- School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, China
| | - Liqing Li
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Zheng Zeng
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Xiancheng Ma
- College of Mechanical & Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Siyu Wei
- School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, China
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Zhang WP, Li JR, Li YY, Zhao J, Wu K, Xiao H, He C. Acetone Efficient Degradation under Simulated Humid Conditions by Mn-O-Pt Interaction Taming-Triggered Water Dissociation Intensification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20962-20973. [PMID: 38008907 DOI: 10.1021/acs.est.3c07194] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
As a generally existing component in industrial streams, H2O usually inhibits the catalytic degradation efficiency of volatile organic compounds (VOCs) greatly. Here, we propose a novel strategy that accelerates the H2O dissociation and facilitates positive feedbacks during VOC oxidation by fabricating citric acid (CA)-assisted Pt(K)-Mn2O3/SiO2 (Pt-Mn/KS-xCA). Results reveal that the complexation of carboxyl groups of citric acid with Mn cations leads to the formation of small Mn2O3 (4.1 ± 0.2 nm) and further enhances the Mn-O-Pt interaction (strengthened by the Si-O-Mn interaction), which can transfer more electrons from Pt-Mn/KS-6CA to H2O, thus facilitating its breaking of covalent bonds. It subsequently produces abundant surface hydroxyl groups, improving the adsorption and activation abilities of acetone reactant and ethanol intermediate. Attributing to these, the acetone turnover frequency value of Pt-Mn/KS-6CA is 1.8 times higher than that of Pt-Mn/KS at 160 °C, and this multiple changes to 6.3 times in the presence of H2O. Remarkably, acetone conversion over Pt-Mn/KS-6CA increases by up to 14% in the presence of H2O; but it decreases by up to 26% for Pt-Mn/KS due to its weak dissociation ability and high adsorption capacity toward H2O. This work sheds new insights into the design of highly efficient catalytic materials for VOC degradation under humid conditions.
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Affiliation(s)
- Wan-Peng Zhang
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jian-Rong Li
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ying-Ying Li
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Junyi Zhao
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
| | - Kun Wu
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
| | - Hang Xiao
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
- Ningbo (Beilun) Zhongke Haixi Industrial Technology Innovation Center, Ningbo 315021, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, P. R. China
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Li Y, Zhu J, Xie J, Mao Y, Hu W. Self-sacrifice-template epitaxial growth of hierarchical MnO 2@NiCo 2O 4 heterojunction electrode for high-performance asymmetric supercapacitor. J Colloid Interface Sci 2023; 650:1113-1124. [PMID: 37467640 DOI: 10.1016/j.jcis.2023.07.062] [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: 05/16/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/21/2023]
Abstract
Constructing three-dimensional (3D) hierarchical bimetallic pseudocapacitive materials with abundant opening channel and heterojunction structures is rather promising but still challenging for high-performance supercapacitors. Herein, a self-sacrifice-template epitaxial growth strategy was proposed for the first time to construct 3D hierarchical bimetallic pseudocapacitive material. By using this strategy, NiCo2O4 nanowires (NiCo2O4NW) arrayed randomly to form a porous shell via in-situ epitaxial growth fully enclosing a MnO2 tube core, forming multiple transport channels and nano-heterojunctions between MnO2 and NiCo2O4NW, which facilitates electron transfer, i.e. exhibiting high electronic conductivity than any single component. As a result of the self-sacrifice-template epitaxial growth method, special hollow tectorum-like 3D hierarchical structure with considerable inter-nanowire space and hollow interior space enables easy access of electrolyte to NiCo2O4NW surface and MnO2 core, thereby resulting in highly exposed redox active sites of MnO2 core and NiCo2O4NW shell for energy storage. Comprehensive evaluations confirmed MnO2@NiCo2O4NW was a supercapacitor electrode candidate, delivering a superior energy density of 106.37 Wh kg-1. Such performance can be ascribed to the synergistic coupling effect of 3D hierarchical tube and nano-heterojunction structures. The proposed self-sacrifice-template epitaxial growth strategy provides important guidance for designing high-performance energy storage materials.
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Affiliation(s)
- Yuantao Li
- Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Jiajun Zhu
- Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, PR China
| | - Jiyang Xie
- Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, PR China; Electron Microscopy Center, Yunnan University, Kunming 650091, PR China
| | - Yongyun Mao
- Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, PR China; Electron Microscopy Center, Yunnan University, Kunming 650091, PR China; Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Kunming 650091, PR China.
| | - Wanbiao Hu
- Key Laboratory of LCR Materials and Devices of Yunnan Province, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, PR China; Electron Microscopy Center, Yunnan University, Kunming 650091, PR China.
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Greluk M, Rotko M, Słowik G, Turczyniak-Surdacka S, Grzybek G, Tyszczuk-Rotko K. Effect of Potassium Doping on the Structural and Catalytic Properties of Co/MnO x Catalyst in the Steam Reforming of Ethanol. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5377. [PMID: 37570080 PMCID: PMC10420196 DOI: 10.3390/ma16155377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023]
Abstract
The promotional effect of potassium (~1.25 wt%) on a Co/MnOx catalyst was studied for samples prepared by the impregnation method in the steam reforming of ethanol (SRE) process at 420 °C for a H2O/EtOH molar ratio of 12/1. The catalysts were characterized using physicochemical methods to study their textural, structural, and redox properties. The XRD studies revealed that, during the treatment of both cobalt-based catalysts under a hydrogen atmosphere at 500 °C, Co0 and MnO phases were formed by the reduction in Co3O4 and Mn2O3/Mn3O4 phases, respectively. Potassium doping significantly improved stability and ability for the C-C bond cleavage of the Co/MnOx catalyst. The enhancement of activity (at ~25%) and selectivity to hydrogen (at ca. 10%) and the C1 product, mainly carbon dioxide (at ~20%), of the Co/MnOx catalyst upon potassium doping was clarified by the alkali promoter's impact on the reducibility of the cobalt and manganese oxides. The microscopic observations revealed that fibrous carbon deposits are present on the surface of Co/MnOx and KCo/MnOx catalysts after the SRE reaction and their formation is the main reason these catalysts deactivate under SRE conditions. However, carbon accumulation on the surface of the potassium-promoted catalyst was ca. 12% lower after 18 h of SRE reaction compared to the unpromoted sample.
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Affiliation(s)
- Magdalena Greluk
- Department of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Marek Rotko
- Department of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Grzegorz Słowik
- Department of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Sylwia Turczyniak-Surdacka
- Biological and Chemical Research Centre, University of Warsaw, 101 Żwirki i Wigury Street, 20-089 Warsaw, Poland
| | - Gabriela Grzybek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Katarzyna Tyszczuk-Rotko
- Department of Analytical Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
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Lu T, Zhang C, Du F, Zhang C, Zhang R, Liu P, Li J. Mutual inhibition effects on the synchronous conversion of benzene, toluene, and xylene over MnOx catalysts. J Colloid Interface Sci 2023; 641:791-802. [PMID: 36966568 DOI: 10.1016/j.jcis.2023.03.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/13/2023] [Accepted: 03/17/2023] [Indexed: 04/03/2023]
Abstract
Advancing the practical application of catalytic oxidation technology demands for illustrating the synchronous conversion behavior of various volatile organic compounds (VOCs) over catalysts. Here, the mutual effects of benzene, toluene and xylene (BTX) were examined for their synchronous conversion on the surface of the MnO2 nanowire. Competitive adsorption of xylene (absorption energy (Eads): -0.889 eV) facilitated its prior conversion and impeded the oxidization of toluene and benzene over the catalyst. The turnover frequencies were 0.52 min-1 (benzene), 0.90 min-1 (toluene) and 2.42 min-1 (xylene) for mixed BTX conversion over the MnO2. Doping MnO2 with K+, Na+ and Ca2+ could enhance its ability to oxidize the individual VOCs but did not alter the conversion mechanism of mixed BTX over the catalyst. When reducing the competitive effects in the adsorption of BTX, the oxidation performance of catalysts would depend on their ability to oxidize toluene and benzene. K-MnO2 showed superior properties, i.e. specific surface area, highly low-valent Mn species, high lattice oxygen content, and abundant oxygen vacancy, and then exhibited superior performance during long-term operation (90% conversion in 800 min). The present study uncovered the co-conversion mechanism of multiple VOCs and significantly leveraged the catalytic oxidization technology for VOCs removal in practical application.
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Huang Q, Zhao P, Lv L, Zhang W, Pan B. Redox-Induced In Situ Growth of MnO 2 with Rich Oxygen Vacancies over Monolithic Copper Foam for Boosting Toluene Combustion. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37289934 DOI: 10.1021/acs.est.3c02103] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Catalytic combustion has been known to be an effective technique in volatile organic compound (VOC) abatement. Developing monolithic catalysts with high activity at low temperatures is vital yet challenging in industrial applications. Herein, monolithic MnO2-Ov/CF catalysts were fabricated via the in situ growth of K2CuFe(CN)6 (CuFePBA, a family of metal-organic frames) over copper foam (CF) followed by a redox-etching route. The as-synthesized monolith MnO2-Ov-0.04/CF catalyst displays a superior low-temperature activity (T90% = 215 °C) and robust durability for toluene elimination even in the presence of 5 vol % water. Experimental results reveal that the CuFePBA template not only guides the in situ growth of δ-MnO2 with high loading over CF but also acts as a source of dopant to create more oxygen vacancies and weaken the strength of the Mn-O bond, which considerably improves the oxygen activation ability of δ-MnO2 and consequently boosts the low-temperature catalytic activity of the monolith MnO2-Ov-0.04/CF toward toluene oxidation. In addition, the reaction intermediate and proposed mechanism in the MnO2-Ov-0.04/CF mediated catalytic oxidation process were investigated. This study provides new insights into the development of highly active monolithic catalysts for the low-temperature oxidation of VOCs.
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Affiliation(s)
- Qianlin Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Puzhen Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Weiming Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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Huang Q, Zhou Z, Lan B, Sun M, Sun C, Yu L. Heterointerface engineering regulating the energy-level configuration of α-MnO2/δ-MnO2 for enhancing toluene catalytic combustion performance. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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11
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Bathla A, Younis SA, Kim KH, Li X. TiO 2-based catalytic systems for the treatment of airborne aromatic hydrocarbons. MATERIALS HORIZONS 2023; 10:1559-1579. [PMID: 36799148 DOI: 10.1039/d2mh01583h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Among diverse strategies to manage air quality, catalytic oxidation has been a widely used option to mitigate diverse pollutants such as aromatic volatile organic compounds (VOCs), especially benzene, toluene, and xylene (BTX). For such applications, TiO2-based catalysts have drawn significant research attention for their prominent photo/thermal catalytic activities and photochemical stability. This review has been organized to elaborate on the recent developments achieved in the thermocatalytic, photocatalytic, and photothermal applications of metal/non-metal doped TiO2 catalysts towards BTX vapors and their reaction mechanisms. The performance of the reported TiO2-based catalysts has also been analyzed based on multiple computational metrics such as reaction rate (r), quantum yield (QY), space-time yield, and figure of merit (FOM). At last, the research gap and prospects in the catalytic treatment of BTX are also discussed in association with the feasibility and utility of TiO2-based catalysts in air purification applications.
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Affiliation(s)
- Aadil Bathla
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, South Korea.
| | - Sherif A Younis
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, South Korea.
- Analysis and Evaluation Department, Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, Egypt
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, South Korea.
| | - Xiaowei Li
- School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444, P. R. China
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Hong W, Liu Y, Jiang X, An C, Zhu T, Sun Y, Wang H, Shen F, Li X. To promote catalytic ozonation of toluene by tuning Brönsted acid sites via introducing alkali metals into the OMS-2-SO 42-/ZSM-5 catalyst. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130900. [PMID: 36731324 DOI: 10.1016/j.jhazmat.2023.130900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/16/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Although free hydroxyl radical (·OH) generated on OMS-2-based catalysts during the catalytic ozonation process have been shown as important reactive oxygen species (ROSs) for toluene degradation, improvement of surface ·OH formation ability remains challenging. Here, Na, K, Rb, and Cs-OMS-2-SO42-/ZSM-5 catalysts were prepared, characterized and evaluated for catalytic ozonation of toluene. Both characterizations and DFT calculations showed that the appropriate alkali metal introduction made the catalyst possess with appropriate crystalline, reducibility, and acidity, which was favorable for catalytic ozonation of toluene. Characterizations also showed that alkali metal introduction resulted in water molecule adsorption on Brönsted acid sites of the catalysts, which made water molecule activation by ozone to form ·OH more easily. The introduction of K+ content of ∼ 5.9 wt% yielded K-OMS-2-SO42-/ZSM-5 catalyst with the highest Brönsted acid sites and thus formed the most ·OH among the five prepared catalysts. As a result, the catalyst exhibited excellent toluene conversion and COx selectivity for catalytic ozonation of toluene at room temperature and ambient humidity. Furthermore, the catalytic activity of deactivated K-OMS-2-SO42-/ZSM-5 catalyst was recovered after regeneration by a combination of water washing and heat treatment. Finally, a complete mechanism for toluene catalytic ozonation, catalyst deactivation, and regeneration was proposed.
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Affiliation(s)
- Wei Hong
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Yan Liu
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Xinxin Jiang
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Chenguang An
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Tianle Zhu
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China.
| | - Ye Sun
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China.
| | - Haining Wang
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Fangxia Shen
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Xiang Li
- School of Space and Environment, Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices, Beihang University, Beijing 100191, China
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13
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Enhanced Charge Separation and Transfer Capacity of Heterojunctions by Constructing Homojunctions for Visible Light Photocatalytic Degradation of Toluene. Catal Letters 2022. [DOI: 10.1007/s10562-022-04122-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Xiao J, Wang M, Wang Y, Li X, He J, Liu Y, Xu Q, Li H, Li N, Chen D, Lu J. Rational Design of Bimetal Mn-Ce Nanosheets Anchored on Porous Nano-sized ZSM-5 Zeolite for Adsorption-Enhanced Catalytic Oxidation of Toluene. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jun Xiao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Mengmeng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Yaru Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Xunxun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Jiaqin He
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Yunchong Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
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15
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Zhang X, Zhao Z, Zhao S, Xiang S, Gao W, Wang L, Xu J, Wang Y. The promoting effect of alkali metal and H2O on Mn-MOF derivatives for toluene oxidation: A combined experimental and theoretical investigation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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16
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Wang L, Sun Y, Zhu Y, Zhang J, Ding J, Gao J, Ji W, Li Y, Wang L, Ma Y. Revealing the mechanism of high water resistant and excellent active of CuMn oxide catalyst derived from Bimetal-Organic framework for acetone catalytic oxidation. J Colloid Interface Sci 2022; 622:577-590. [PMID: 35526415 DOI: 10.1016/j.jcis.2022.04.155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 11/18/2022]
Abstract
Environmental H2O is an influential factor in the low-temperature catalytic oxidation of volatile organic compounds (VOCs), and it significantly impacts the reaction process and mechanism. Here, a series of rod-like Cu-Mn oxides were synthesised by pyrolysing Cu/Mn-BTC for acetone oxidation. The results confirm that the formation of multiphase interfaces have more excellent catalytic performance compared to single-phase catalysis. This phenomenon can be attributed to the formation of multiphase interfaces, which resulted in the synthesized catalysts with more active oxygen species and defective sites. The CuMn2Ox catalyst exhibited superior catalytic performance (T90 = 150 °C), high water resistance and long-term stability. Furthermore, in situ diffuse reflectance infrared Fourier transform spectroscopy and thermal desorption-gas chromatography-mass spectrometry results indicated that the degradation pathway of acetone was as follows: acetone ((CH3)2CO*) → enolate complexes ((CH2) = C(CH3) O*) → acetaldehyde ((CH3CHO*) → acetate (CH3COO*) → formate (HCOO*) → CO2 and H2O. At a low-temperature, water vapour dissociated a large number of activated hydroxyl groups on the multiphase interface, which promoted the dissociation of enolate complexes and acetaldehyde species. This composite oxide is a promising catalyst for removing oxygenated VOCs at high humidity.
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Affiliation(s)
- Lei Wang
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yonggang Sun
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
| | - Yinbo Zhu
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Juan Zhang
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Jie Ding
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Jingdan Gao
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Wenxin Ji
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - YuanYuan Li
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Liqiong Wang
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Yulong Ma
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China.
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17
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Nie Y, Tang X, Cai W, Li J. Non-thermal plasma-enhanced catalytic activation of Mn-Zr-La/Al 2O 3 catalyst for meta-xylene degradation: Synergetic effects and degradation mechanism. CHEMOSPHERE 2022; 303:135184. [PMID: 35654237 DOI: 10.1016/j.chemosphere.2022.135184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 05/18/2022] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
The LaMnO3 catalysts doped with transition metal (Zr, Co, Fe) were prepared. The influencing factors (the catalyst type, the initial concentration, the gas flow, and oxygen content) on the degradation efficiency by the non-thermal plasma synergistic the LaMnO3 catalysts doped with Zr, Co and Fe were investigated systematically. The degradation mechanism of the meta-xylene degradation by the non-thermal plasma synergistic Mn-Zr-La/Al2O3 was researched. The results showed that the Mn-Zr-La/Al2O3 catalyst in the four catalysts had the best degradation efficiency for meta-xylene, which was 99.6% at the applied voltage of 44 kV. The by-product ozone concentration was low, and the NOx was not detected. Meanwhile, the XPS characterization analysis study revealed that the proportion of Mn4+ element and the proportion of Osur in the Zr-doped Mn-Zr-La/Al2O3 catalyst were both the highest. The degradation efficiency decreased with the increasing of the initial concentration and gas flow, but first increased and then decreased with the increasing of oxygen content. The fresh and used Mn-Zr-La/Al2O3 were characterized by SEM, XRD, BET, FT-IR, O2-TPD, and the tail gas was treated by GC-MS. Then synergistic degradation mechanism for the meta-xylene by the non-thermal plasma over the Mn-Zr-La/Al2O3 catalyst are proposed.
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Affiliation(s)
- Yunni Nie
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hang Zhou, 310018, China
| | - Xiujuan Tang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hang Zhou, 310018, China
| | - Weijian Cai
- Department of Chemistry, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jiwu Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hang Zhou, 310018, China.
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18
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Lu T, Su F, Zhao Q, Li J, Zhang C, Zhang R, Liu P. Catalytic oxidation of volatile organic compounds over manganese-based oxide catalysts: Performance, deactivation and future opportunities. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121436] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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19
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Li JR, Zhang WP, Zhao J, Tian M, Wu K, Xiao H, He C. Accelerating the Low-Temperature Catalytic Oxidation of Acetone over Al-Substituted Mn-Al Oxides by Rate-Limiting Step Modulation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36536-36550. [PMID: 35917445 DOI: 10.1021/acsami.2c06186] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In order to enhance the catalytic activity and improve the stability of Mn-Al oxides in acetone oxidation, it is interesting to have found that modulating and accelerating the rate-limiting step by Al substitution rather than just mixing of Mn and Al is crucial for hydrocarbon efficient catalytic destruction. Here, a series of Mn-Al oxides with different Al substitution ratios were prepared by a scalable and facile hydrothermal-redox strategy. The reaction rate, selectivity, and stability of the representative α-MnO2 catalyst in acetone oxidation can be remarkably promoted by simple replacing of the partial framework Mn with Al, which changes the rate-limiting step from acetic acid dissociation to ethanol decomposition accelerated by H2O molecules. Among them, MnAl0.5 displays the best catalytic performance with 90% of acetone converted at just 165 °C and a remarkable CO2 yield. DFT results suggest that the py and px orbitals of the O element take part in the formation of the carbonyl group when the intermediate of removing H* from ethanol reacts with the hydroxyl group of H2O. The dxz orbital of Mn with p-electron of Al plays a vital role in the rate-limiting step. The work provides new insights into engineering catalysts for industrial VOC efficient and economical mineralization.
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Affiliation(s)
- Jian-Rong Li
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, and Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Wan-Peng Zhang
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, and Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Junyi Zhao
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, and Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Mingjiao Tian
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China
| | - Kun Wu
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, and Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Hang Xiao
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, and Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
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20
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Liu Y, Yang HH, Zhou H, Yi X, Zhan J. Water durability modification of cerium-manganese oxide by tin shell for efficient airborne benzene oxidation. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129207. [PMID: 35739729 DOI: 10.1016/j.jhazmat.2022.129207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/09/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Single or cooperative incorporation of Ce and Sn elements into α-MnO2 parent were tried to update the catalytic benzene oxidation performance, and the successive modification via Ce doping and Sn deposition was demonstrated to be a promising methodology to offer high mineralization and avoid moisture-aroused inactivation. Ce doping caused lattice distortion, increased Mn3+ content to 2.7 times that of the pristine MnO2 and weakened Mn-O bonds due to electron transfer from Ce3+ to lattice oxygen, thus facilizing oxygen vacancy formation. Further, Sn deposition on CeMn substrate induced strong metal support interaction (SMSI) due to the core-shell like structure of Sn@CeMn, which promoted the construction of active oxygen vacancies to an even larger extent (1.2 and 2.5 times that of the CeMn and pristine MnO2, respectively). The thus-formed larger amount of reactive oxygen species rendered the Sn@CeMn simultaneously with high CO2 yield and low CO production. Also benefited from the SMSI effect, the Sn@CeMn's ability to continuously activate O2 and H2O into reactive oxygen species (e.g.,·OH radicals) was enhanced, which could offset the negativity caused by water vapor, thereby keeping > 95% removal during 5.5 h water switch on/off investigation at 200 °C. Reaction pathways were uncovered with designed experimentations.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China.
| | - Huan-Huan Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Hao Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xianliang Yi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Jingjing Zhan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
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21
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Zhang WP, Wu K, Zhao J, He J, Wang L, Xiao H, Guo JB, Li JR. Promotional effects of calcination temperature and H 2O on the catalytic activity of Al-substituted MnAlO catalysts for low-temperature acetone oxidation. CHEMOSPHERE 2022; 301:134722. [PMID: 35483660 DOI: 10.1016/j.chemosphere.2022.134722] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/29/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
In order to enhance the role of Al in the materials, Al-substituted MnAlO catalysts were synthesized via the hydrothermal-redox method at different calcination temperatures for acetone oxidation. There were Al-substituted α-MnO2 and amorphous aluminum oxide existed with homogeneous dispersion of elements in the catalysts. The surface property, reaction rate, CO2 yield and water resistance of MnAlO catalysts were greatly affected by calcination temperatures. MnAlO-450 catalyst exhibited the best catalytic performance (acetone conversion of 90% at 165 °C) with CO2 yield higher than 99.7%, which was mainly related to the weaker Mn-O bond strength, lower temperature reducibility and abundant Lewis acid sites. The acetone conversion of MnAlO-450 increased by as much as 16% in the presence of 1 vol% H2O compared to that in the absence of H2O at T50 (the temperature for 50% conversion of acetone). The acceleration consumption of ethanol as the main by-product by H2O improved the catalytic performance. This work would shed light on the Al substitution based catalysts for OVOC oxidation with highly efficient and water resistance.
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Affiliation(s)
- Wan-Peng Zhang
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Kun Wu
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Junyi Zhao
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Jun He
- Key Laboratory of Carbonaceous Wastes Processing and Process Intensification of Zhejiang Province, The University of Nottingham Ningbo China, Ningbo, 315100, PR China.
| | - Leiping Wang
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Hang Xiao
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Jian-Bing Guo
- College of Chemistry, Minnan Normal University, Zhang zhou, 363000, Fujian, PR China
| | - Jian-Rong Li
- Xiamen Key Laboratory of Gaseous Pollutant Control Materials, Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China.
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22
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Zn/Co-ZIFs@MIL-101(Fe) metal–organic frameworks are effective photo-Fenton catalysts for RhB removal. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121099] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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23
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Effect of Potassium Promoter on the Performance of Nickel-Based Catalysts Supported on MnOx in Steam Reforming of Ethanol. Catalysts 2022. [DOI: 10.3390/catal12060600] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The effect of a potassium promoter on the stability of and resistance to a carbon deposit formation on the Ni/MnOx catalyst under SRE conditions was studied at 420 °C for different H2O/EtOH molar ratios in the range from 4/1 to 12/1. The catalysts were prepared by the impregnation method and characterized using several techniques to study their textural, structural, and redox properties before being tested in a SRE reaction. The catalytic tests indicated that the addition of a low amount of potassium (1.6 wt.%) allows a catalyst with high stability to be obtained, which was ascribed to high resistance to carbon formation. The restriction of the amount of carbon deposits originates from the potassium presence on the Ni surface, which leads to (i) a decrease in the number of active sites available for methane decomposition and (ii) an increase in the rate of the steam gasification of carbon formed during SRE reactions.
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24
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Portehault D, Gómez-Recio I, Baron MA, Musumeci V, Aymonier C, Rouchon V, Le Godec Y. Geoinspired syntheses of materials and nanomaterials. Chem Soc Rev 2022; 51:4828-4866. [PMID: 35603716 DOI: 10.1039/d0cs01283a] [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 search for new materials is intimately linked to the development of synthesis methods. In the current urge for the sustainable synthesis of materials, taking inspiration from Nature's ways to process matter appears as a virtuous approach. In this review, we address the concept of geoinspiration for the design of new materials and the exploration of new synthesis pathways. In geoinspiration, materials scientists take inspiration from the key features of various geological systems and processes occurring in nature, to trigger the formation of artificial materials and nanomaterials. We discuss several case studies of materials and nanomaterials to highlight the basic geoinspiration concepts underlying some synthesis methods: syntheses in water and supercritical water, thermal shock syntheses, molten salt synthesis and high pressure synthesis. We show that the materials emerging from geoinspiration exhibit properties differing from materials obtained by other pathways, thus demonstrating that the field opens up avenues to new families of materials and nanomaterials. This review focuses on synthesis methodologies, by drawing connections between geosciences and materials chemistry, nanosciences, green chemistry, and environmental sciences.
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Affiliation(s)
- David Portehault
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Isabel Gómez-Recio
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Marzena A Baron
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Valentina Musumeci
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Cyril Aymonier
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Virgile Rouchon
- IFP Energies nouvelles (IFPEN), Rond point de l'échangeur de Solaize - BP 3, 69360 Solaize, France
| | - Yann Le Godec
- Sorbonne Université, CNRS, MNHN, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005, Paris, France
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25
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Achieving acetone efficient deep decomposition by strengthening reactants adsorption and activation over difunctional Au(OH)K x/hierarchical MFI catalyst. J Colloid Interface Sci 2022; 612:504-515. [PMID: 35007876 DOI: 10.1016/j.jcis.2021.12.184] [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: 11/10/2021] [Revised: 12/16/2021] [Accepted: 12/29/2021] [Indexed: 11/23/2022]
Abstract
Realizing the simultaneous adsorption and activation of O2 and reactants over supported noble metal catalysts is crucial for the oxidation of organic hydrocarbons. Herein, we report a facile one-step ethylene glycol reduction method to synthesize difunctional Au(OH)Kx sites, which were anchored on a hierarchical hollow MFI support and adopted for acetone decomposition. The alkali ion-associated adjacent surface hydroxyl groups were coordinated with Au nanoparticles, resulting in partially oxidized Au1+ sites with improved dispersion. The results obtained from exclusive ex situ and in situ experiments illustrated that the proper content of K and hydroxyl groups significantly enhanced the adsorption of surface O2 and acetone molecules around the Au sites simultaneously, whereas the excess K species inhibited the catalytic performance by blocking the pore structure and decreasing the acidity of catalysts. The Au(OH)K0.7/h-MFI catalyst exhibited the highest efficiency for acetone oxidation, over which 1500 ppm acetone can be completely oxidized at just 280 °C with an extremely low activation energy of 32.5 kJ mol-1. The carbonate species were detected as the main intermediates during acetone decomposition over the difunctional Au(OH)Kx sites through a Langmuir - Hinshelwood (L - H) mechanism. This finding paves the way for designing and constructing efficient functional active sites for the complete oxidation of hydrocarbons.
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26
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Effect of calcination temperature on the structure and performance of rod-like MnCeOx derived from MOFs catalysts. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112226] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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BAO LEI, WU DONGFANG. Catalytic properties of SmMnO3/cordierite monolithic catalysts: acid treatment and calcination process optimization using response surface methodology. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02042-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Highly efficient K-doped Mn-Ce catalysts with strong K-Mn-Ce interaction for toluene oxidation. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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29
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Wei X, Yi H, Lai C, Huo X, Ma D, Du C. Synergistic effect of flower-like MnFe 2O 4/MoS 2 on photo-Fenton oxidation remediation of tetracycline polluted water. J Colloid Interface Sci 2022; 608:942-953. [PMID: 34785469 DOI: 10.1016/j.jcis.2021.10.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 01/05/2023]
Abstract
In this work, a flower-like MnFe2O4-MoS2 (FMW) catalyst was successfully prepared as a catalyst for photo-Fenton oxidation. The flower-like structured FMW possessed large open surface area, which exposed enough active sites and can fully contact with tetracycline (TC). We studied the effect of different FMW composites, H2O2 concentration and light intensity on the photo-Fenton process. 1FMW (MnFe2O4:MoS2 = 1:10 in mol) exhibited the best degradation effect on TC, and 1 mmol/L of H2O2 and 398.73 mW/cm2 of light were the optimum parameters. A p-n heterojunction was formed in 1FMW, ensuring the stability of composite and the fast electron transfer. Holes, •O2- and •OH were generated in photo-Fenton process and participated in TC degradation. Notably, FMW can be recycled quickly under an external magnetic field due to its magnetic properties. Overall, FMW shows good catalytic stability and recoverability in photo-Fenton oxidation process, which has a broad application prospect.
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Affiliation(s)
- Xiaoyu Wei
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Huan Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
| | - Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
| | - Xiuqin Huo
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Dengsheng Ma
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Chunyan Du
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China
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Simultaneous degradation of RhB and reduction of Cr(VI) by MIL-53(Fe)/Polyaniline (PANI) with the mediation of organic acid. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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31
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Uniform platinum nanoparticles loaded on Universitetet i Oslo-66 (UiO-66): Active and stable catalysts for gas toluene combustion. J Colloid Interface Sci 2022; 606:1811-1822. [PMID: 34507172 DOI: 10.1016/j.jcis.2021.08.127] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/10/2021] [Accepted: 08/19/2021] [Indexed: 01/18/2023]
Abstract
Highly dispersed Pt nanoparticles supported UiO-66 catalysts were successfully prepared by the incipient wetness impregnation method. Their thermal catalytic performances were evaluated by toluene degradation. The physicochemical properties of the samples were characterized using a series of characterization methods. The catalytic activity of catalysts remained essentially unchanged in the high weight hourly space velocity, stability and water resistance test, which also indicated good catalytic performance. In the reusability test, the catalytic performance was found to be enhanced after the reaction, because of the catalyst might follow a Pt0-PtO synergistic catalytic mechanism (similar to Mars-van Krevelen mechanism) and there was a phase transition between Pt0 and PtO during the reaction. Firstly, the toluene adsorbed on the catalyst surface was oxidized by the activated lattice oxygen of the PtO. Then, consumption of oxygen atoms led to formation of oxygen vacancies, and finally the molecular oxygen adsorbed by Pt0 was activated and passed to the PtO to supplement the oxygen vacancies, forming a redox cycle. In addition, the possible catalytic oxidation mechanism of toluene was also revealed.
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32
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Huang C, Ji Q, Zhang H, Wang Y, Wang S, Liu X, Guo Y, Zhang C. Ru-incorporated Co 3O 4 nanoparticles from self-sacrificial ZIF-67 template as efficient bifunctional electrocatalysts for rechargeable metal-air battery. J Colloid Interface Sci 2022; 606:654-665. [PMID: 34419813 DOI: 10.1016/j.jcis.2021.08.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/02/2021] [Accepted: 08/07/2021] [Indexed: 01/19/2023]
Abstract
Ru-incorporated Co3O4 nanoparticles have been synthesized from self-sacrificial ZIF-67 template and utilized as efficient electrocatalysts towards oxygen reduction and evolution reactions (ORR and OER). Amongst, Ru@Co3O4-1.0 exhibited the optimum electrocatalytic behavior with an ultra-low potential gap (0.84 V) between the OER potential (1.61 V at 10 mA cm-2) and ORR half-wave potential (0.77 V). The zinc-air battery using Ru@Co3O4-1.0 as a cathode presented high specific capacity (788.1 mAh g-1) and power density (101.2 mW cm-2). Meanwhile, this battery possessed relatively lower voltage gap and higher cycling stability compared with the commercial Pt/C-based one. Ruthenium incorporation induced remarkable lattice expansion of Co3O4 and engineered more oxygen vacancies, promoting the lattice oxygen mobility from the subsurface/bulk phase onto surface. All these properties were recognized to be the crucial parameters for electrocatalytic activity improvement. This work provided a facile approach to design highly active metal oxide with broad potentiality for rechargeable metal-air batteries.
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Affiliation(s)
- Changfei Huang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Qianqian Ji
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Hongliang Zhang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yating Wang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Shuoming Wang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Xuehua Liu
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Youmin Guo
- School of Physics and Materials Science, Anhui University, Hefei 230601, PR China
| | - Chuanhui Zhang
- Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China.
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33
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Wang X, Sun Y, Li M, Zhang W, Zhu Y. Excellent catalytic oxidation performance on toluene and benzene over OMS-2 with a hierarchical porous structure synthesized by a one-pot facile method: modifying surface properties by introducing different amounts of K. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00032f] [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 formation of K–O–Mn bond weaken the bond of Mn–O–Mn which increases oxygen species mobility leading to excellent catalytic oxidation performance over OMS-2 by introducing different amounts of K.
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Affiliation(s)
- Xiaotong Wang
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin, 150080 P. R. China
| | - Yanling Sun
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin, 150080 P. R. China
| | - Mingyang Li
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin, 150080 P. R. China
| | - Wanlu Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin, 150080 P. R. China
| | - Yujun Zhu
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin, 150080 P. R. China
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34
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Salari H, Erami M, Dokoohaki MH, Zolghadr AR. New insights into adsorption equilibrium of organic pollutant on MnO2 nanorods: Experimental and computational studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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Yang R, Guo Z, Cai L, Zhu R, Fan Y, Zhang Y, Han P, Zhang W, Zhu X, Zhao Q, Zhu Z, Chan CK, Zeng Z. Investigation into the Phase-Activity Relationship of MnO 2 Nanomaterials toward Ozone-Assisted Catalytic Oxidation of Toluene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103052. [PMID: 34719844 DOI: 10.1002/smll.202103052] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Manganese dioxide (MnO2 ), with naturally abundant crystal phases, is one of the most active candidates for toluene degradation. However, it remains ambiguous and controversial of the phase-activity relationship and the origin of the catalytic activity of these multiphase MnO2 . In this study, six types of MnO2 with crystal phases corresponding to α-, β-, γ-, ε-, λ-, and δ-MnO2 are prepared, and their catalytic activity toward ozone-assisted catalytic oxidation of toluene at room temperature are studied, which follow the order of δ-MnO2 > α-MnO2 > ε-MnO2 > γ-MnO2 > λ-MnO2 > β-MnO2 . Further investigation of the specific oxygen species with the toluene oxidation activity indicates that high catalytic activity of MnO2 is originated from the rich oxygen vacancy and the strong mobility of oxygen species. This work illustrates the important role of crystal phase in determining the oxygen vacancies' density and the mobility of oxygen species, thus influencing the catalytic activity of MnO2 catalysts, which sheds light on strategies of rational design and synthesis of multiphase MnO2 catalysts for volatile organic pollutants' (VOCs) degradation.
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Affiliation(s)
- Ruijie Yang
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Zhongjie Guo
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Lixin Cai
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Rongshu Zhu
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yuefeng Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Pingping Han
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Wanjian Zhang
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Xiangang Zhu
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Qitong Zhao
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Zhenye Zhu
- State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, P. R. China
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Chak Keung Chan
- School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
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36
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Bagherzadeh SB, Kazemeini M, Mahmoodi NM. Preparation of novel and highly active magnetic ternary structures (metal-organic framework/cobalt ferrite/graphene oxide) for effective visible-light-driven photocatalytic and photo-Fenton-like degradation of organic contaminants. J Colloid Interface Sci 2021; 602:73-94. [PMID: 34118607 DOI: 10.1016/j.jcis.2021.05.181] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/23/2021] [Accepted: 05/31/2021] [Indexed: 12/16/2022]
Abstract
Herein, MIL-101(Fe), CoFe2O4, novel binary (MIL-101(Fe)/CoFe2O4, MIL-101(Fe)/GO and CoFe2O4/GO), and ternary (MIL-101(Fe)/CoFe2O4/(3%)GO and MIL-101(Fe)/CoFe2O4/(7%)GO) magnetic composites based upon the MIL-101(Fe) were synthesized. The XRD, FESEM, TEM, EDX, BET-BJH, FTIR, VSM, DRS, PL, EIS and other electrochemical analyses were applied to characterize samples. The MIL/CoFe2O4/(3%)GO demonstrated the best performance compared to other samples for visible light photocatalytic and photo-Fenton-like degradation of Direct Red 23 (DtR-23), Reactive Red 198 (ReR-198) dyes as well as Tetracycline Hydrochloride (TC-H) antibiotic. Degradation of dyes using the ternary composite after 70 min of visible light irradiation was greater than that of 99%. The presence of the optimum GO as a strong electron acceptor in MIL/CoFe2O4/(3%)GO not only led to the effective separation of charge carriers and thus reduction of their recombination but also increased the absorption of visible light. The composite possessed good durability in terms of stability and reusability. The PL, EIS and electrochemical analyses indicated that the MIL/CoFe2O4/(3%)GO improved the optical properties and photocatalytic performance.
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Affiliation(s)
- Seyed Behnam Bagherzadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran; Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran
| | - Mohammad Kazemeini
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Niyaz Mohammad Mahmoodi
- Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran.
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37
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Wang P, Wang J, Zhao J, Ma X, Du X, Peng S, Hao X, Tang B, Abudula A, Guan G. Trace holmium assisting delaminated OMS-2 catalysts for total toluene oxidation at low temperature. J Colloid Interface Sci 2021; 608:1662-1675. [PMID: 34742081 DOI: 10.1016/j.jcis.2021.10.077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 01/08/2023]
Abstract
In this study, octahedral molecular sieve (OMS-2) is successfully delaminated by using trace holmium (Ho) via a facile redox co-precipitation route, which exhibits high performance for the total toluene oxidation at low temperature. High resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) analyses verify that abundant multi-phase interfaces and lattice dislocations are formed on the obtained delaminated OMS-2 by the Ho (Ho-OMS-2), which can induce more active oxygen species. In particular, the delaminated OMS-2 with a trace Ho amount has a high Oads/Olatt ratio with a balanced ratio of Mn3+ and Mn4+, demonstrating much higher activity (T100% of 228 °C even under 5 vol% H2O vapor over 0.5% Ho-OMS-2) than the parent OMS-2 (T100% of 261 °C) for the total toluene oxidation. Furthermore, the positive effect of the introduction of H2O on catalytic activity, especially the enhancement of the conversion of intermediates into CO2 and H2O, is verified by the in situ diffuse reflection infrared Fourier transform spectroscopy (DRIFTS). Based on these results, the reaction mechanism for toluene oxidation over the OMS-2 based catalyst is proposed. It is expected to provide an effective preparation method to obtain high-performance catalysts for the VOCs oxidation at low temperatures.
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Affiliation(s)
- Peifen Wang
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; Department of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jing Wang
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; School of Chemical Engineering, Northwest University, International Science & Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi, Xi'an 710069, Shaanxi, China
| | - Jinggang Zhao
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Xuli Ma
- Department of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xiao Du
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Shang Peng
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Xiaogang Hao
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Bing Tang
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Abuliti Abudula
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Guoqing Guan
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; Energy Conversion Engineering Laboratory, Institute of Regional Innovation (IRI), Hirosaki University, 2-1-3 Matsubara, Aomori 030-0813, Japan.
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38
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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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39
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Wang P, Zhao J, Zhao Q, Ma X, Du X, Hao X, Tang B, Abudula A, Guan G. Microwave-assisted synthesis of manganese oxide catalysts for total toluene oxidation. J Colloid Interface Sci 2021; 607:100-110. [PMID: 34496313 DOI: 10.1016/j.jcis.2021.08.170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/13/2021] [Accepted: 08/25/2021] [Indexed: 01/08/2023]
Abstract
Oxygen vacancy on the heterogeneous catalyst is of great importance to the catalysis of volatile organic compound (VOC) oxidation. Herein, microwave radiation with special energy-excitation is successfully utilized for the post-processing of a series of manganese oxides (MnOx) to generate oxygen vacancies. It is found that the MnOx catalyst with 60 min of microwave radiation demonstrates higher activity for toluene oxidation with a T50% of 210 °C and a T100% of 223 °C, which is attributed to the higher concentration of oxygen vacancies derived from the rich phase interface defects resulted from the microwave radiation. Furthermore, the Mn-MW-60 catalyst possesses excellent thermal stability and water vapor tolerance even under 20 vol% H2O atmospheres within 60 h. In situ DRIFTS analysis verifies that both surface and lattice oxygen species simultaneously participate the oxidation process, and all reactions over different environments follows two different pathways. Meanwhile, it is proposed that those oxygen vacancies derived from microwave radiation could facilitate the rate-controlling step of opening the aromatic ring based on the electron back-donation, thereby leading to the increment of catalytic activity.
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Affiliation(s)
- Peifen Wang
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jinggang Zhao
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Qiang Zhao
- Energy Conversion Engineering Laboratory, Institute of Regional Innovation (IRI), Hirosaki University, 2-1-3 Matsubara, Aomori 030-0813, Japan; School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, PR China
| | - Xuli Ma
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xiao Du
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xiaogang Hao
- Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Bing Tang
- School of Environmental Science and Technology, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Abuliti Abudula
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan
| | - Guoqing Guan
- Graduate School of Science and Technology, Hirosaki University, 1-Bunkyocho, Hirosaki 036-8560, Japan; Energy Conversion Engineering Laboratory, Institute of Regional Innovation (IRI), Hirosaki University, 2-1-3 Matsubara, Aomori 030-0813, Japan.
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40
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Guo Y, Chen C, Ling L, Wang J, Qi H, Zhang B, Wu M. Visible-light-driven photo-Fenton degradation of ceftriaxone sodium using SnS 2/LaFeO 3 composite photocatalysts. NEW J CHEM 2021. [DOI: 10.1039/d1nj03639d] [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
The LaFeO3-based heterostructure photocatalyst and photo-Fenton process are combined to effectively treat ceftriaxone sodium (CRS) contaminant under visible light.
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Affiliation(s)
- Yuting Guo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Cong Chen
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Liwei Ling
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Jun Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Huixiu Qi
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Bingjie Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
| | - Min Wu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China
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