1
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Wang Y, Bi Y, Ji G, Jing Y, Zhao J, Sun E, Wang Y, Chang H, Liu F. Acid-activated α-MnO 2 for photothermal co-catalytic oxidative degradation of propane: Activity and reaction mechanism. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135447. [PMID: 39116747 DOI: 10.1016/j.jhazmat.2024.135447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/05/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
In order to further reduce the energy consumption of the conventional thermal catalytic oxidation system and improve the degradation efficiency of pollutants, photothermal synergistic catalytic oxidation (PTSCO) system was constructed in this paper with propane as simulated pollutant representing VOCs, and then the modified α-MnO2 catalysts were prepared by using the acid activation method, which were used for the catalytic oxidation of propane in PTSCO. The α-MnO2 with appropriate acid concentration possessed excellent low-temperature reducibility, abundant active oxygen species, fast oxygen migration rate and a large number of acid sites. The optimal catalyst, H0.05-MnO2, had a T90 of 204 °C in the PTSCO system, which reduced by more than 30 °C relative to the α-MnO2 (T90 of 235 °C). Moreover, H0.05-MnO2 demonstrated excellent water resistance and long-term stability (T = 45 h). It was shown that the combination of photocatalysis and thermocatalysis can improve propane degradation by examining the kinetics of propane degradation in the PTSCO system and the conformational relationship of propane degradation by catalysts. Furthermore, a multi-pathway synergistic mechanism between photocatalysis and thermocatalysis in the PTSCO system was proposed. This work provided a theoretical basis for the preparation of high-performance catalysts and the catalytic degradation of propane.
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Affiliation(s)
- Yadi Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Yuxi Bi
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Guoyang Ji
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Yuekun Jing
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Jingang Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China; Technology Inspection Center of Shengli Oil Field, Dongying 257000, China
| | - Encheng Sun
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China; Technology Inspection Center of Shengli Oil Field, Dongying 257000, China
| | - Yongqiang Wang
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Huazhen Chang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Fang Liu
- College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, China; State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China.
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2
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Wang D, Luo K, Tian H, Cheng H, Giannakis S, Song Y, He Z, Wang L, Song S, Fang J, Ma J. Transforming Plain LaMnO 3 Perovskite into a Powerful Ozonation Catalyst: Elucidating the Mechanisms of Simultaneous A and B Sites Modulation for Enhanced Toluene Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:12167-12178. [PMID: 38920332 DOI: 10.1021/acs.est.4c00809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Herein, we propose preferential dissolution paired with Cu-doping as an effective method for synergistically modulating the A- and B-sites of LaMnO3 perovskite. Through Cu-doping into the B-sites of LaMnO3, specifically modifying the B-sites, the double perovskite La2CuMnO6 was created. Subsequently, partial La from the A-sites of La2CuMnO6 was etched using HNO3, forming novel La2CuMnO6/MnO2 (LCMO/MnO2) catalysts. The optimized catalyst, featuring an ideal Mn:Cu ratio of 4.5:1 (LCMO/MnO2-4.5), exhibited exceptional catalytic ozonation performance. It achieved approximately 90% toluene degradation with 56% selectivity toward CO2, even under ambient temperature (35 °C) and a relatively humid environment (45%). Modulation of A-sites induced the elongation of Mn-O bonds and decrease in the coordination number of Mn-O (from 6 to 4.3) in LCMO/MnO2-4.5, resulting in the creation of abundant multivalent Mn and oxygen vacancies. Doping Cu into B-sites led to the preferential chemisorption of toluene on multivalent Cu (Cu(I)/Cu(II)), consistent with theoretical predictions. Effective electronic supplementary interactions enabled the cycling of multiple oxidation states of Mn for ozone decomposition, facilitating the production of reactive oxygen species and the regeneration of oxygen vacancies. This study establishes high-performance perovskites for the synergistic regulation of O3 and toluene, contributing to cleaner and safer industrial activities.
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Affiliation(s)
- Da Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Kai Luo
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Haole Tian
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Haijun Cheng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Stefanos Giannakis
- E.T.S. de Ingenieros de Caminos, Canales Y Puertos, Departamento de Ingeniería Civil: Hidráulica, Energía Y Medio Ambiente, Unidad Docente Ingeniería Sanitaria, Universidad Politécnica de Madrid, C/Profesor Aranguren, S/n, ES-28040 Madrid, Spain
| | - Yang Song
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006 Guangdong, China
| | - Zhiqiao He
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Lizhang Wang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Shuang Song
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jingyun Fang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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3
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Yang Y, Li J, Xiao Z, Yun Y, Zhu M, Yang J. Space-confined manganese oxides nanosheets for efficient catalytic decomposition of ozone. CHEMOSPHERE 2024; 358:142113. [PMID: 38657694 DOI: 10.1016/j.chemosphere.2024.142113] [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: 01/03/2024] [Revised: 03/09/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
Ground-level ozone has long posed a substantial menace to human well-being and the ecological milieu. The widely reported manganese-based catalysts for ozone decomposition still facing the persisting issues encompass inefficiency and instability. To surmount these challenges, we developed a mesoporous silica thin films with perpendicular nanochannels (SBA(⊥)) confined Mn3O4 catalyst (Mn3O4@SBA(⊥)). Under a weight hourly space velocity (WHSV) of 500,000 mL g-1 h-1, the Mn3O4@SBA(⊥) catalyst exhibited 100% ozone decomposition efficiency in 5 h and stability across a wide humidity range, which exceed the performance of bulk Mn3O4 and Mn3O4 confine in commonly reported SBA-15. Rapidly decompose 20 ppm O3 to a safety level below 100 μg m-3 in the presence of dust in smog chamber (60 × 60 × 60 cm) was also realized. This prominent catalytic performance can be attributed to the unique confined structure engenders the highly exposed active sites, facilitate the reactant-active sites contact and impeded the water accumulation on the active sites. This work offers new insights into the design of confined structure catalysts for air purification.
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Affiliation(s)
- Yunjun Yang
- Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou, 511443, PR China
| | - Jialin Li
- Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou, 511443, PR China
| | - Zhijian Xiao
- Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou, 511443, PR China
| | - Yang Yun
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi, 030006, PR China.
| | - Mingshan Zhu
- Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou, 511443, PR China
| | - Jingling Yang
- Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou, 511443, PR China.
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4
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Zhao H, Wang A, Zhang Q, Han C. Highly efficient removal of ozone by amorphous manganese oxides synthesized with a simple hydrothermal method. J Environ Sci (China) 2023; 134:96-107. [PMID: 37673537 DOI: 10.1016/j.jes.2022.10.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/03/2022] [Accepted: 10/12/2022] [Indexed: 09/08/2023]
Abstract
Amorphous manganese oxides (MnOx) were synthesized by facile hydrothermal reactions between potassium permanganate and manganese acetate. Synthesis parameters, including hydrothermal time and temperature and molar ratio of precursors, significantly affected the ozone removal performance and structure property of MnOx. Amorphous MnOx-1.5, which was prepared at the Mn2+/Mn7+ molar ratio of 1.5 under hydrothermal conditions of 120°C and 2 hr, showed the highest ozone removal rate of 93% after 480 min at the room temperature, RH (relative humidity) = 80% and WHSV (weight hourly space velocity) = 600 L/(g·hr). The morphology, composition and structure of catalysts were investigated with X-ray diffractometer (XRD), Raman spectra, N2 physisorption, field emission scanning electron microscope (FESEM), X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR), O2 temperature-programmed desorption (O2-TPD) and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS). It was confirmed that high catalytic activity of amorphous MnOx for ozone removal was mainly ascribed to its abundant oxygen vacancies, high oxygen mobility and large specific surface area.
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Affiliation(s)
- Hong Zhao
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Aijie Wang
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Qiuyan Zhang
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Chong Han
- School of Metallurgy, Northeastern University, Shenyang 110819, China.
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5
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Wang A, Zhang L, Guan J, Wang X, Ma G, Fan G, Wang H, Han N, Chen Y. Highly efficient ozone elimination by metal doped ultra-fine Cu 2O nanoparticles. J Environ Sci (China) 2023; 134:108-116. [PMID: 37673525 DOI: 10.1016/j.jes.2022.06.008] [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: 01/29/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 09/08/2023]
Abstract
Nowadays, ozone contamination becomes dominant in air and thus challenges the research and development of cost-effective catalyst. In this study, metal doped Cu2O catalysts are synthesized via reduction of Cu2+ by ascorbic acid in base solutions containing doping metal ions. The results show that compared with pure Cu2O, the Mg2+ and Fe2+ dopants enhance the O3 removal efficiency while Ni2+ depresses the activity. In specific, Mg-Cu2O shows high O3 removal efficiency of 88.4% in harsh environment of 600,000 mL/(g·hr) space velocity and 1500 ppmV O3, which is one of the highest in the literature. Photoluminescence and electron paramagnetic spectroscopy characterization shows higher concentration of crystal defects induced by the Mg2+ dopants, favoring the O3 degradation. The in-situ diffuse reflectance Fourier transform infrared spectroscopy shows the intermediate species in the O3 degradation process change from O22- dominant of pure Cu2O to O2- dominant of Mg-Cu2O, which would contribute to the high activity. All these results show the promising prospect of the Mg-Cu2O for highly efficiency O3 removal.
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Affiliation(s)
- Anqi Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Le Zhang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jian Guan
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoze Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Guojun Ma
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Guijun Fan
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Hang Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Ning Han
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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6
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Wang A, Zhao H, Wu Y, Zhang Q, Han C. Cerium-modified amorphous manganese oxides for efficient catalytic removal of ozone. J Environ Sci (China) 2023; 131:151-161. [PMID: 37225376 DOI: 10.1016/j.jes.2022.08.021] [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: 05/13/2022] [Revised: 08/13/2022] [Accepted: 08/14/2022] [Indexed: 05/26/2023]
Abstract
Manganese-based catalysts were widely developed for catalytic removal of ozone, and the low stability and water inactivation are major challenges. To improve removal performance of ozone, three methods were applied to modify amorphous manganese oxides, including acidification, calcination and Ce modification. The physiochemical properties of prepared samples were characterized, and the catalytic activity for ozone removal was evaluated. All modification methods can promote the removal of ozone by amorphous manganese oxides, and Ce modification showed the most significant enhancement. It was confirmed that the introduction of Ce markedly changed the amount and property of oxygen vacancies in amorphous manganese oxides. Superior catalytic activity of Ce-MnOx can be ascribed to its more content and enhanced formation ability of oxygen vacancies, larger specific surface area and higher oxygen mobility. Furthermore, the durability tests under high relative humidity (80%) determined that Ce-MnOx showed excellent stability and water resistance. These demonstrate the promising potential of amorphously Ce-modified manganese oxides for catalytic removal of ozone.
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Affiliation(s)
- Aijie Wang
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Hong Zhao
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Yu Wu
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Qiuyan Zhang
- School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Chong Han
- School of Metallurgy, Northeastern University, Shenyang 110819, China.
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7
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Chen C, Xie J, Chen X, Zhang W, Chen J, Jia A. Cu Species-Modified OMS-2 Materials for Enhancing Ozone Catalytic Decomposition under Humid Conditions. ACS OMEGA 2023; 8:19632-19644. [PMID: 37305299 PMCID: PMC10249024 DOI: 10.1021/acsomega.3c01186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/10/2023] [Indexed: 06/13/2023]
Abstract
Manganese oxide octahedral molecular sieves (OMS-2) exhibit an excellent performance in ozone catalytic decomposition in dry atmosphere conditions, which however is severely limited by deactivation in humid conditions. Herein, it was found that the OMS-2 materials modified with Cu species could obviously improve both the ozone decomposition activity and water resistance. Based on the characterization results, it was found that these CuOx/OMS-2 catalysts exhibited dispersed CuOx nanosheets attached and located at the external surface accompanied with ionic Cu species entering the MnO6 octahedral framework of OMS-2. In addition, it was demonstrated that the main reason for the promotion of ozone catalytic decomposition could be ascribed to the combined effect of different Cu species in these catalysts. On the one hand, ionic Cu entered the MnO6 octahedral framework of OMS-2 near the catalyst surface and substituted ionic Mn species, resulting in an enhanced mobility of surface oxygen species and formation of more oxygen vacancies, which act as the active sites for ozone decomposition. On the other hand, the CuOx nanosheets could serve as non-oxygen vacancy sites for H2O adsorption, which could alleviate the catalyst deactivation to some extent caused by the occupancy of H2O on surface oxygen vacancies. Finally, different reaction pathways for ozone catalytic decomposition over OMS-2 and CuOx/OMS-2 under humid conditions were proposed. The findings in this work may shed new light on the design of highly efficient catalysts for ozone decomposition with improved water resistance.
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Affiliation(s)
- Chonglai Chen
- Jinhua
Polytechnic, Jinhua 321007, People’s Republic
of China
| | - Jun Xie
- Wenzhou
Water Supply Co. Ltd., Wenzhou 325000, People’s
Republic of China
| | - Xiao Chen
- Jinhua
Polytechnic, Jinhua 321007, People’s Republic
of China
| | - Wenxia Zhang
- Jinhua
Polytechnic, Jinhua 321007, People’s Republic
of China
| | - Jian Chen
- Key
Laboratory of the Ministry of Education for Advanced Catalysis Materials,
Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,
Institute of Physical Chemistry, Zhejiang
Normal University, Jinhua 321004, People’s
Republic of China
| | - Aiping Jia
- Key
Laboratory of the Ministry of Education for Advanced Catalysis Materials,
Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,
Institute of Physical Chemistry, Zhejiang
Normal University, Jinhua 321004, People’s
Republic of China
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8
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Singh S, Patidar R, Srivastava VC, Qiao Q, Kumar P, Singh A, Lo SL. Peroxymonosulfate activation with an α-MnO 2/Mn 2O 3/Mn 3O 4 hybrid system: parametric optimization and oxidative degradation of organic dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27422-2. [PMID: 37243765 DOI: 10.1007/s11356-023-27422-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 04/28/2023] [Indexed: 05/29/2023]
Abstract
The present study proposed the synthesis of low-toxicity and eco-friendly spherically shaped manganese oxides (α-MnO2, Mn2O3, and Mn3O4) by using the chemical precipitation method. The unique variable oxidation states and different structural diversity of manganese-based materials have a strong effect on fast electron transfer reactions. XRD, SEM, and BET analyses were used to confirm the structure morphology, higher surface area, and excellent porosity. The catalytic activity of as-prepared manganese oxides (MnOx) was investigated for the rhodamine B (RhB) organic pollutant with peroxymonosulfate (PMS) activation under the condition of control pH. In acidic conditions (pH = 3), complete RhB degradation and 90% total organic carbon (TOC) reduction were attained in 60 min. The effects of operating parameters such as solution pH, PMS loading, catalyst dosage, and dye concentration on RhB removal reduction were also tested. The different oxidation states of MnOx promote the oxidative-reductive reaction under acidic conditions and enhance the SO4•-/•OH radical formation during the treatment, whereas the higher surface area offers sufficient absorption sites for interaction of the catalyst with pollutants. A scavenger experiment was used to investigate the generation of more reactive species that participate in dye degradation. The effect of inorganic anions on divalent metal ions that genuinely occur in water bodies was also studied. Additionally, separation and mass analysis were used to investigate the RhB dye degradation mechanism at optimum conditions based on the intermediate's identification. Repeatability tests confirmed that MnOx showed superb catalytic performance on its removal trend.
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Affiliation(s)
- Seema Singh
- School of Applied & Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, 248007, India
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei, Taiwan, Republic of China
| | - Ritesh Patidar
- Department of Petroleum Engineering, Rajasthan Technical University, Kota, Rajasthan, 324010, India
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Qicheng Qiao
- School of Environment and Biological Engineering, Nantong College of Science and Technology, Nantong City, Jiangsu, 226007, People's Republic of China
| | - Praveen Kumar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000, Ljubljana, Slovenia
| | - Ajay Singh
- School of Applied & Life Sciences, Uttaranchal University, Dehradun, Uttarakhand, 248007, India
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei, Taiwan, Republic of China.
- Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, Taipei, 10617, Taiwan.
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9
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Zhang L, Huo F, Wang A, Chai S, Guan J, Fan G, Yang W, Ma G, Han N, Chen Y. Coordination-Controlled Catalytic Activity of Cobalt Oxides for Ozone Decomposition. Inorg Chem 2023. [PMID: 37235631 DOI: 10.1021/acs.inorgchem.3c01064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nowadays, it is still elusive and challenging to discover the active sites of cobalt (Co) cations in different coordination structures, though Co-based oxides show their great potency in catalytic ozone elimination for air cleaning. Herein, different Co-based oxides are controllably synthesized including hexagonal wurtzite CoO-W with Co2+ in tetrahedral coordination (CoTd2+) and CoAl spinel with dominant CoTd2+, cubic rock salt CoO-R with Co2+ in octahedral coordination (CoOh2+), MgCo spinel with dominant Co3+ in octahedral coordination (CoOh3+), and Co3O4 with mixed CoTd2+ and CoOh3+. The valences are proved by X-ray photoelectron spectroscopy, and the coordinations are verified by X-ray absorption fine structure analysis. The ozone decomposition performances are CoOh3+ ∼ CoOh2+ ≫ CoTd2+, and CoOh3+ and CoOh2+ show a lower apparent activation energy of ∼42-44 kJ/mol than CoTd2+ (∼55 kJ/mol). In specific, MgCo shows the highest decomposition efficiency of 95% toward 100 ppm ozone at a high space velocity of 1,200,000 mL/gh, which still retains at 80% after a long-term running of 36 h at room temperature. The high activity is explained by the d-orbital splitting in the octahedral coordination, favoring the electron transfer in ozone decomposition reactions, which is also verified by the simulation. These results show the promising prospect of the coordination tuning of Co-based oxides for highly active ozone decomposition catalysts.
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Affiliation(s)
- Le Zhang
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Feng Huo
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Anqi Wang
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shaohua Chai
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Jian Guan
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Guijun Fan
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Wuxinchen Yang
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Guojun Ma
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Ning Han
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yunfa Chen
- Key Laboratory of Science & Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
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10
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Liang X, Wang X, Yang M, Dong H, Ji Y, Wang L, Zhang J, Long C. α-Fe 2O 3-supported Co 3O 4 nanoparticles to construct highly active interfacial oxygen vacancies for ozone decomposition. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 330:121704. [PMID: 37116569 DOI: 10.1016/j.envpol.2023.121704] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/16/2023] [Accepted: 04/21/2023] [Indexed: 05/10/2023]
Abstract
Ozone pollution has become one of the most concerned environmental issue. Developing low-cost and efficient catalysts is a promising alternative for ozone decomposition. This work presents a creative strategy that using α-Fe2O3-supported Co3O4 nanoparticles for constructing interfacial oxygen vacancies (Vo) to remove ozone. The efficiency of Co3O4/α-Fe2O3 was superior to that of pure α-Fe2O3 by nearly two times for 200-ppm ozone removal after 6-h reaction at 25 °C, which is ascribed to the highly active interfacial Vo. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy suggest that the Fe3+-Vo-Co2+ was formed when Co3O4 was loaded in α-Fe2O3. Furthermore, the density functional theory (DFT) calculations reveal the desorption and electron transfer ability of intermediate peroxide (O22-) on Fe3+-Vo-Co2+ are higher than the Vo from other regions. In situ diffuse reflectance Fourier transform (DRIFT) spectroscopy also demonstrate the higher conversion rate of O22- on Co3O4/α-Fe2O3. Base on the intermediates detected, we propose a recycle mechanism of interfacial Vo for ozone removal: O22- is quickly converted to O2- and transformed into O2 on interfacial Vo. Moreover, O2-temperature-programmed desorption (TPD), H2-temperature-programmed reduction (TPR), and electrochemical impedance spectroscopy (EIS) reveal that the oxygen mobility, reducibility, and conductivity of Co3O4/α-Fe2O3 are greatly superior to those of α-Fe2O3, which is contributed to the conversion of O22-. Consequently, our proposed strategy effectively enhances the activity and stability of the bimetallic transition oxides for ozone decomposition.
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Affiliation(s)
- Xiaoshan Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xiaoxiang Wang
- Institute for Carbon-Neutral Technology, Shenzhen Polytechnic, Shenzhen, 518055, China
| | - Mengyun Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Hao Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yekun Ji
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Lisha Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Jian Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Chao Long
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China; Quanzhou Institute for Environmental Protection Industry, Nanjing University, Beifeng Road, Quanzhou, 362000, China.
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11
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Zhang M, Li G, Li Q, Chen J, Elimian EA, Jia H, He H. In Situ Construction of Manganese Oxide Photothermocatalysts for the Deep Removal of Toluene by Highly Utilizing Sunlight Energy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:4286-4297. [PMID: 36857121 DOI: 10.1021/acs.est.2c09136] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The alternative use of electric energy by renewable energy to supply power for catalytic oxidation of pollutants is a sustainable technology, requiring a competent catalyst to realize efficient utilization of light and drive the catalytic reaction. Herein, in situ-synthesized manganese oxide heterostructure composites are developed through solvothermal reduction and subsequent calcination of amorphous manganese oxide (AMO). 95% of toluene conversion and 80% of CO2 mineralization were achieved over amorphous manganese oxide calcined at 250 °C (AMO-250) under light irradiation, and catalyst stability was maintained for at least 40 h. Highly utilization of light energy, uniformly dispersed nanoparticles, large specific surface area, improved metal reducibility, and oxygen desorption and migration ability at low temperature contribute to the good catalytic oxidation activity of AMO-250. Light activated more lattice oxygen to participate in the reaction via the Mars-van Krevelen (MvK) mechanism, and traditional e--h+ photocatalytic behavior exists over the AMO-250 heterostructure composite as an auxiliary degradation path. The reaction pathways of photothermocatalysis and thermocatalysis are close, except for the emergence of different copolymers, where light enhances the deep conversion of intermediates. A proof-of-concept study under natural sunlight has confirmed the feasibility of practical application in the photothermocatalytic degradation of pollutants.
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Affiliation(s)
- Meng Zhang
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Li
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Qiang Li
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Chen
- Xiamen Institute of Rare-earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ehiaghe Agbovhimen Elimian
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham, Ningbo, Zhejiang 315100, China
| | - Hongpeng Jia
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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12
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Wang Z, Li X, Ma J, He H. Eco-friendly in-situ synthesis of monolithic NiFe layered double hydroxide for catalytic decomposition of ozone. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2023.106635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
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13
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Liang C, Liu Z, Sun B, Zou H, Chu G. Improvement in Discharge Characteristics and Energy Yield of Ozone Generation via Configuration Optimization of a Coaxial Dielectric Barrier Discharge Reactor. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Li X, Shao X, Wang Z, Ma J, He H. Regulating the chemical state of silver via surface hydroxyl groups to enhance ozone decomposition performance of Ag/Fe2O3 catalyst. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Coupling of acoustic/hydrodynamic cavitation with ozone (O3), hydrogen peroxide (H2O2), magnesium oxide (MgO) and manganese dioxide (MnO2) for the effective treatment of CETP effluent. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120281] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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16
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Liang X, Wang L, Wen T, Liu H, Zhang J, Liu Z, Zhu C, Long C. Mesoporous poorly crystalline α-Fe 2O 3 with abundant oxygen vacancies and acid sites for ozone decomposition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150161. [PMID: 34517313 DOI: 10.1016/j.scitotenv.2021.150161] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/27/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
In this work, mesoporous poorly crystalline hematite (α-Fe2O3) was prepared using mesoporous silica (KIT-6) functionalized with 3-[(2-aminoethyl)amino]propyltrimethoxysilane as a hard template (SMPC-α-Fe2O3). The disordered atomic arrangement structure of SMPC-α-Fe2O3 promoted the formation of oxygen vacancies, which was confirmed using X-ray photoelectron spectroscopy (XPS), O2-temperature-programmed desorption (TPD), H2-temperature-programmed reduction (TPR), and in situ diffuse reflectance infrared Fourier transform (DRIFT) analyses. Density functional theory calculations (DFT) also proved that reducing the crystallinity of α-Fe2O3 decreased the formation energy of oxygen vacancies. TPD and in situ DRIFT analyses of NH3 adsorption suggested that the surface acidity of SMPC-α-Fe2O3 was considerably higher than those of mesoporous poorly crystalline α-Fe2O3 (MPC-α-Fe2O3) and highly crystalline α-Fe2O3 (HC-α-Fe2O3). The oxygen vacancies and acid sites formed on α-Fe2O3 surface are beneficial for ozone (O3) decomposition. Compared with MPC-α-Fe2O3 and HC-α-Fe2O3, SMPC-α-Fe2O3 exhibited a higher removal efficiency for 200-ppm O3 at a space velocity of 720 L g-1 h-1 at 25 ± 2 °C under dry conditions. Additionally, in situ DRIFT and XPS results suggested that the accumulation of peroxide (O22-) and the conversion of O22- to lattice oxygen over the oxygen vacancies caused catalyst deactivation. However, O22- could be desorbed completely by continuous N2 purging at approximately 350 °C. This study provides significant insights for developing highly active α-Fe2O3 catalysts for O3 decomposition.
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Affiliation(s)
- Xiaoshan Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lisha Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Tiancheng Wen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Huijuan Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Jian Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Zhu Liu
- Department of Chemistry, Washington State University, Pullman, WA 99164, USA
| | - Chengzhang Zhu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chao Long
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Quanzhou Institute for Environmental Protection Industry, Nanjing University, Beifeng Road, Quanzhou 362000, China.
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17
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Liu B, Ji J, Zhang B, Huang W, Gan Y, Leung DYC, Huang H. Catalytic ozonation of VOCs at low temperature: A comprehensive review. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126847. [PMID: 34416698 DOI: 10.1016/j.jhazmat.2021.126847] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/31/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
VOCs abatement has attracted increasing interest because of the detrimental effects on both atmospheric environment and human beings of VOCs. The assistance of ozone has enabled efficient VOCs removal at low temperature. Thereby, catalytic ozonation is considered as one of the most feasible and effective methods for VOCs elimination. This work systematically reviews the emerging advances of catalytic ozonation of different VOCs (i.e., aromatic hydrocarbons, oxygenated VOCs, chlorinated VOCs, sulfur-containing VOCs, and saturated alkanes) over various functional catalysts. General reaction mechanism of catalytic ozonation including both Langmuir-Hinshelwood and Mars-van-Krevelen mechanisms was proposed depending on the reactive oxygen species involving the reactions. The influence of reaction conditions (water vapor and temperature) is fully discussed. This review also introduces the enhanced VOCs oxidation via catalytic ozonation in the ozone-generating systems including plasma and vacuum ultraviolet. Lastly, the existing challenges of VOCs catalytic ozonation are presented, and the perspective of this technology is envisioned.
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Affiliation(s)
- Biyuan Liu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Jian Ji
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Boge Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenjun Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yanling Gan
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Dennis Y C Leung
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Haibao Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Indoor Air Pollution Control Engineering Research Center, Guangzhou 510006, China.
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18
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Xu Z, Mo S, Li Y, Zhang Y, Wu J, Fu M, Niu X, Hu Y, Ye D. Pt/MnO x for toluene mineralization via ozonation catalysis at low temperature: SMSI optimization of surface oxygen species. CHEMOSPHERE 2022; 286:131754. [PMID: 34399263 DOI: 10.1016/j.chemosphere.2021.131754] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/23/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The problem of deep oxidation of low concentrations of VOCs in industrial tail gas is exceptionally urgent. The preparation of VOCs ozonation catalyst with a high mineralization rate is still a challenge. In this paper, manganese oxide carriers with different morphologies were synthesized by simple methods and used to catalyze ozone mineralization of toluene after loading Pt nanoparticles efficiently. The conversion of toluene over Pt/MnOx-T catalyst was more than 98 % at ambient temperature, and the mineralization rate of toluene was close to 100 % at 70 °C. Through a variety of characterization methods, the strong metal-support interaction (SMSI) between Pt nanoparticles and carriers was successfully constructed. It was found that SMSI successfully optimized the surface oxygen species and oxygen migration ability of the catalyst, and then realized the high degree of mineralization of toluene at low temperature. This paper guides the subsequent development of Pt-Mn catalysts for catalytic organic pollutants ozonation with high activity.
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Affiliation(s)
- Ziyang Xu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Shengpeng Mo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yanxia Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yuchen Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Junliang Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Mingli Fu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou, 510006, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangzhou, 510006, China.
| | - Xiaojun Niu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yun Hu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou, 510006, China; National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangzhou, 510006, China
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19
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Xie Y, Wang J, Zhou Z, Wu Y, Cheng G, Li Y, Sun C, Sun M, Yu L. Engineering of Mn 3O 4@Ag microspheres assembled from nanosheets for superior O 3 decomposition. Dalton Trans 2022; 51:16612-16619. [DOI: 10.1039/d2dt02711a] [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
A topochemical transformation route was designed for synthesis of Mn3O4 nanospheres using β-MnOOH as the precursor. Ag nanoparticles were doped via an in situ redox reaction to obtain Mn3O4@Ag-NF, which displayed an enhanced performance for O3 elimination.
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Affiliation(s)
- Yu Xie
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Jiandian Wang
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Zihao Zhou
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Ying Wu
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Gao Cheng
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Yongfeng Li
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Changyong Sun
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Ming Sun
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
| | - Lin Yu
- Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
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20
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Li X, He G, Ma J, Shao X, Chen Y, He H. Boosting the Dispersity of Metallic Ag Nanoparticles and Ozone Decomposition Performance of Ag-Mn Catalysts via Manganese Vacancy-Dependent Metal-Support Interactions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:16143-16152. [PMID: 34751029 DOI: 10.1021/acs.est.1c05765] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ozone (O3) removal has important implications for environmental protection and human health, and Ag-Mn catalysts have shown promising O3 decomposition. Catalysts with Ag supported on porous cube-like α-Mn2O3 (Ag/Mn-C) with high utilization of Ag were prepared by the impregnation method and showed excellent O3 decomposition activity. Physicochemical characterizations demonstrated that metallic Ag nanoparticles (Agn0) were mainly anchored on manganese vacancies, forming Ag-O-Mn bonds between Agn0 and α-Mn2O3-C. The abundant manganese vacancies of α-Mn2O3-C can lead to Agn0 with a smaller particle size and more uniform dispersion, thereby resulting in markedly enhanced O3 decomposition performance compared to Agn0 with a large particle size and uneven distribution on rod-like α-Mn2O3 (Ag/Mn-R). Under a relative humidity of 65% and a space velocity of 1,110,000 h-1, the conversion of 40 ppm O3 over the 2%Ag/Mn-C catalyst within 6 h (98%) at 30 °C was more than twice as high as that of the 2%Ag/Mn-R catalyst (42%). The study provides guidance for the design of highly efficient Ag-based catalysts and the understanding of the microstructure of supported catalysts.
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Affiliation(s)
- Xiaotong Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xufei Shao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yingfa Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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21
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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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22
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Xu Z, Yang W, Si W, Chen J, Peng Y, Li J. A novel γ-like MnO 2 catalyst for ozone decomposition in high humidity conditions. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126641. [PMID: 34329114 DOI: 10.1016/j.jhazmat.2021.126641] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/29/2021] [Accepted: 07/11/2021] [Indexed: 06/13/2023]
Abstract
MnO2 catalysts have been widely studied for catalytic gaseous ozone decomposition. However, their poor moisture resistance often leads to undesirable catalytic effects in the presence of high humidity. In this study, a novel catalyst with γ-like MnO2 was synthesized using the selective dissolution method on LaMnO3 perovskites. The as-prepared catalyst exhibited quite stable ozone conversion of ~90% within 12 h under 75% relative humidity (400-800 ppm of ozone, 30 °C, 150 000 mL·g-1·h-1 of WHSV). In contrast, traditional γ-MnO2 catalyst showed deficient resistance to H2O and sensitivity to space velocity. Detailed characterizations showed that the larger number of oxygen vacancies induced by structure reconstruction of the γ-like MnO2 and residual La3+ cations facilitated ozone decomposition in humid atmosphere. Finally, the reaction rate of ozone decomposition was proposed by a kinetic study, which further proved that the amount and hydrophilicity of oxygen vacancies are the determinants of the first-order reaction rate constant.
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Affiliation(s)
- Zhenghao Xu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Wenhao Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Wenzhe Si
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China.
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment, School of Environment, Tsinghua University, Beijing 100084, PR China
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Ji J, Yu Y, Cao S, Huang H. Enhanced activity and water tolerance promoted by Ce on MnO/ZSM-5 for ozone decomposition. CHEMOSPHERE 2021; 280:130664. [PMID: 34162073 DOI: 10.1016/j.chemosphere.2021.130664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/24/2021] [Accepted: 04/22/2021] [Indexed: 06/13/2023]
Abstract
Catalytic decomposition is a promising way to eliminate ozone using manganese oxides. However, water-induced deactivation of the catalysts remains a challenge for further application. In this work, a series of Ce-promoted MnO supported on ZSM-5 (Mn-xCe/ZSM-5) were developed for ozone decomposition, which exhibited superior catalytic performance. The catalysts were characterized by multiple techniques. It is indicated that MnO was highly dispersed on ZSM-5 (Mn/ZSM-5), accounting for the high performance of ozone decomposition. Addition of Ce in Mn/ZSM-5 formed abundant redox pairs that promoted electron transfer, and thus exhibited superior ozone decomposition activity. Mn-3Ce/ZSM-5 with medium Ce loading showed the maximum activity by exposing the most active sites. Furthermore, Mn-3Ce/ZSM-5 was highly water-resistant in comparison with Mn/ZSM-5 by modulating the surface acidic property to be beneficial for the water desorption. This work provides an efficient and facile way to fabricate Ce-promoted Mn with low valence for effective and stable decomposition of ozone at room temperature.
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Affiliation(s)
- Jian Ji
- School of Environmental Science and Engineering, China.
| | - Yi Yu
- School of Environmental Science and Engineering, China
| | - Shuo Cao
- School of Environmental Science and Engineering, China
| | - Haibao Huang
- School of Environmental Science and Engineering, China; Guangdong Indoor Air Pollution Control Engineering Research Center, Sun Yat-sen University, 132 East Waihuan Road, Guangzhou, 510006, China.
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24
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Ma J, Cao R, Dang Y, Wang J. A recent progress of room–temperature airborne ozone decomposition catalysts. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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25
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Ahmad S, Nawaz T, Ullah A, Ahmed M, Khan MO, Saher S, Qamar A, Sikandar MA. Thermal optimization of manganese dioxide nanorods with enhanced ORR activity for alkaline membrane fuel cell. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202000032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Shahbaz Ahmad
- U.S.‐Pakistan Center for Advanced Studies in Energy University of Engineering and Technology Peshawar Khyber Pakhtunkhwa Pakistan
| | - Tahir Nawaz
- U.S.‐Pakistan Center for Advanced Studies in Energy National University of Sciences and Technology Islamabad Pakistan
| | - Abid Ullah
- U.S.‐Pakistan Center for Advanced Studies in Energy University of Engineering and Technology Peshawar Khyber Pakhtunkhwa Pakistan
| | - Mushtaq Ahmed
- U.S.‐Pakistan Center for Advanced Studies in Energy University of Engineering and Technology Peshawar Khyber Pakhtunkhwa Pakistan
| | - M. Owais Khan
- Department Of Mechanical Engineering University of Engineering and Technology Peshawar Khyber Pakhtunkhwa Pakistan
| | - Saim Saher
- Ariston Energy Solutions Peshawar Pakistan
- Advanced Materials Laboratory (AML) Peshawar Pakistan
| | - Affaq Qamar
- U.S.‐Pakistan Center for Advanced Studies in Energy University of Engineering and Technology Peshawar Khyber Pakhtunkhwa Pakistan
| | - Muhammad Ali Sikandar
- Department of Civil Engineering CECOS University of IT & Emerging Sciences Peshawar Pakistan
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26
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Cao R, Li L, Zhang P. Macroporous MnO 2-based aerogel crosslinked with cellulose nanofibers for efficient ozone removal under humid condition. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124793. [PMID: 33340970 DOI: 10.1016/j.jhazmat.2020.124793] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/06/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Atmospheric ozone pollution receives worldwide concerns, and it is a big challenge to search for the practical ozone-decomposition catalyst with good moisture resistance. Herein, a light-weight and high-porosity MnO2-based hybrid aerogel was synthesized with cellulose nanofibers using a facile ice-template approach, followed by freeze-drying. In the three-dimensional framework, the cellulose nanofibers serve as the skeletons to disperse MnO2 particles, improving the exposure of active sites on MnO2. XPS, 1H NMR and ATR-FTIR demonstrate that MnO2 particles are effectively combined with cellulose nanofibers through hydrogen bonds, which originate from the abundant surface hydroxyl groups of both components. These consumed surface hydroxyl groups of MnO2 not only reduce the water adsorption but also avoid the generation of surface-adsorbed H2O via the reaction with ozone, thus alleviating the catalyst deactivation. In addition, the interconnected macroporous structure enables the rapid diffusion of ozone molecules and facilitates the passage of water molecules, which is conducive to the adsorption and decomposition of ozone on the active sites, i.e. surface oxygen vacancies. Thus, the high and stable ozone conversion was achieved for 150 ppb O3 under the relative humidity of 50% and the space velocity of 600 L·g-1·h-1 within 10 days at room temperature.
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Affiliation(s)
- Ranran Cao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Lianxin Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Pengyi Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for Indoor Air Quality Evaluation and Control, Beijing 100084, China.
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27
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Sun ZB, Si YN, Zhao SN, Wang QY, Zang SQ. Ozone Decomposition by a Manganese-Organic Framework over the Entire Humidity Range. J Am Chem Soc 2021; 143:5150-5157. [DOI: 10.1021/jacs.1c01027] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhi-Bing Sun
- Green Catalysis Center, Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ya-Nan Si
- Green Catalysis Center, Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Shu-Na Zhao
- Green Catalysis Center, Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Qian-You Wang
- Green Catalysis Center, Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Shuang-Quan Zang
- Green Catalysis Center, Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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28
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Yang R, Fan Y, Ye R, Tang Y, Cao X, Yin Z, Zeng Z. MnO 2 -Based Materials for Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004862. [PMID: 33448089 DOI: 10.1002/adma.202004862] [Citation(s) in RCA: 127] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Manganese dioxide (MnO2 ) is a promising photo-thermo-electric-responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2 -based composites via the construction of homojunctions and MnO2 /semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2 -based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high-efficiency MnO2 -based materials for comprehensive environmental applications is provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, 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
| | - Ruquan Ye
- Department of Chemistry, State Key Lab of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Yuxin Tang
- College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiehong Cao
- College of Materials Science and Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - 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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29
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Fang C, Li D, Wang X, Wang Y, Chen J, Luo M. Exploring an efficient manganese oxide catalyst for ozone decomposition and its deactivation induced by water vapor. NEW J CHEM 2021. [DOI: 10.1039/d1nj01381e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of MnOx catalysts supported by carbon spheres were prepared by calcining mixtures of manganese acetate and carbon spheres under a nitrogen atmosphere, and their performance for ozone decomposition under high humidity conditions (RH = 90%) was evaluated.
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Affiliation(s)
- Chentao Fang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
| | - Dandan Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
| | - Xufang Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
| | - Yuejuan Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
| | - Jian Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
| | - Mengfei Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua 321004
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30
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Adeosun WA, Asiri AM, Marwani HM. Real time detection and monitoring of 2, 4-dinitrophenylhydrazine in industrial effluents and water bodies by electrochemical approach based on novel conductive polymeric composite. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 206:111171. [PMID: 32866893 DOI: 10.1016/j.ecoenv.2020.111171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
Much attention has been given to detection and monitoring of hydrazine-based compounds in recent time because of its significant negative impacts on human health and ecosystem (aquatic lives). This prompted the current study focusing on detection of 2, 4-dinitrophenylhydrazine (2, 4-dnphz) using electrochemically synthesized poly-para amino benzoic acid-manganese oxide (P-pABA-MnO2) composite film. The synthesized P-pABA-MnO2 composite film was characterized in terms of its structural and morphological properties by X-ray diffraction spectroscopy and field emission scanning electron microscopy respectively. In addition, functionalities and binding energy of p-PABA-MnO2 were confirmed using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy respectively. Finally, electrochemical properties were investigated using electrochemical impedance spectroscopy and cyclic voltammetry. The synthesized P-pABA-MnO2 displayed good electrocatalytic reduction property towards 2, 4-dnphz with ultra-low limit of detection (0.08 μM; S/N = 3) and very high sensitivity (52 μAμ-1Mcm-2). The proposed sensor based on P-pABA-MnO2 also demonstrated good stability in terms of repeatability, reproducibility and interferents effects. Lastly, the proposed sensor was satisfactorily used in detection of 2, 4-dnphz in environmental real samples.
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Affiliation(s)
- Waheed A Adeosun
- Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia.
| | - Abdullah M Asiri
- Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia.
| | - Hadi M Marwani
- Centre of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O Box 80203, Jeddah, 21589, Saudi Arabia
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31
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Li X, Ma J, He H. Tuning the Chemical State of Silver on Ag-Mn Catalysts to Enhance the Ozone Decomposition Performance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:11566-11575. [PMID: 32786590 DOI: 10.1021/acs.est.0c02510] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ag-Mn catalysts with excellent water resistance and ozone decomposition activity were successfully synthesized by simple precipitation and impregnation methods. Under a relative humidity of 65% and space velocity of 840,000 h-1, the 6%Ag/α-Mn2O3-I catalyst showed 99% conversion of 40 ppm O3 after 6 h, which was far superior to the performance of the 6%AgMnOx-C (49%), 6%Ag/MnCO3-I (32%), and α-Mn2O3 (5%) catalysts. Physicochemical characterization indicated that the chemical state of Ag on the Ag-Mn catalysts determined the O3 decomposition activity of the catalysts. The Ag species on the 6%Ag/α-Mn2O3-I catalyst were mainly metallic silver nanoparticles (Agn0), which exhibited much better ozone decomposition performance than the Ag1.8Mn8O16 and oxidized silver clusters (Agnδ+) existing on the 6%Ag/MnCO3-I and 6%AgMnOx-C catalysts. The 6%Ag/α-Mn2O3-I catalyst still had above 85% ozone conversion after 60 h under a relative humidity of 65% and space velocity of 840,000 h-1. The slight deactivation of the catalyst was ascribed to the oxidation of Agn0, and its activity could be completely recovered by treatment at 350 °C under an N2 atmosphere, which indicated that it is a promising catalyst for ozone decomposition. This research provides guidance for the subsequent development of Ag-Mn catalysts for ozone decomposition with high activity.
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Affiliation(s)
- Xiaotong Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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32
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Li X, Ma J, He H. Recent advances in catalytic decomposition of ozone. J Environ Sci (China) 2020; 94:14-31. [PMID: 32563478 DOI: 10.1016/j.jes.2020.03.058] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
Ozone (O3), as a harmful air pollutant, has been of wide concern. Safe, efficient, and economical O3 removal methods urgently need to be developed. Catalytic decomposition is the most promising method for O3 removal, especially at room temperature or even subzero temperatures. Great efforts have been made to develop high-efficiency catalysts for O3 decomposition that can operate at low temperatures, high space velocity and high humidity. First, this review describes the general reaction mechanism of O3 decomposition on noble metal and transition metal oxide catalysts. Then, progress on the O3 decomposition performance of various catalysts in the past 30 years is summarized in detail. The main focus is the O3 decomposition performance of manganese oxides, which are divided into supported manganese oxides and non-supported manganese oxides. Methods to improve the activity, stability, and humidity resistance of manganese oxide catalysts for O3 decomposition are also summarized. The deactivation mechanisms of manganese oxides under dry and humid conditions are discussed. The O3 decomposition performance of monolithic catalysts is also summarized from the perspective of industrial applications. Finally, the future development directions and prospects of O3 catalytic decomposition technology are put forward.
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Affiliation(s)
- Xiaotong Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
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33
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Gong S, Wang A, Zhang J, Guan J, Han N, Chen Y. Gram-scale synthesis of ultra-fine Cu2O for highly efficient ozone decomposition. RSC Adv 2020; 10:5212-5219. [PMID: 35498308 PMCID: PMC9049045 DOI: 10.1039/c9ra09873a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/10/2020] [Indexed: 12/22/2022] Open
Abstract
Dozens of grams of ultra-fine Cu2O with efficient ozone decomposition was prepared by a facile liquid phase reduction method at room temperature.
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Affiliation(s)
- Shuyan Gong
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Anqi Wang
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Jilai Zhang
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Jian Guan
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Ning Han
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- PR China
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34
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Fang C, Hu C, Li D, Chen J, Luo M. Unravelling the efficient catalytic performance of ozone decomposition over nitrogen-doped manganese oxide catalysts under high humidity. NEW J CHEM 2020. [DOI: 10.1039/d0nj04393a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nitrogen-doped Mn species, coated with a carbon layer of several nanometers in thickness, for enhanced water vapor resistance.
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Affiliation(s)
- Chentao Fang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang
- Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
| | - Caihong Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang
- Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
| | - Dandan Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang
- Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
| | - Jian Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang
- Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
| | - Mengfei Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang
- Key Laboratory for Reactive Chemistry on Solid Surfaces
- Institute of Physical Chemistry
- Zhejiang Normal University
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35
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Yang L, Ma J, Li X, He G, Zhang C, He H. Improving the catalytic performance of ozone decomposition over Pd-Ce-OMS-2 catalysts under harsh conditions. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01298j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Durable Pd-Ce-OMS-2 catalysts for ozone catalytic decomposition under harsh conditions were successfully prepared via a simple one-step hydrothermal process.
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Affiliation(s)
- Li Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Xiaotong Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Guangzhi He
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
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