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Ye Z, Liu Y, Nikiforov A, Ji J, Zhao B, Wang J. The research on CO oxidation over Ce-Mn oxides: The preparation method effects and oxidation mechanism. CHEMOSPHERE 2023:139130. [PMID: 37285972 DOI: 10.1016/j.chemosphere.2023.139130] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 06/09/2023]
Abstract
A series of CeO2-MnOx for highly efficient catalytical oxidation of carbon monoxide were prepared by citrate sol-gel (C), hydrothermal (H) and hydrothermal-citrate complexation (CH) methods. The outcome indicates that the catalyst generated using the CH technique (CH-1:8) demonstrated the greatest catalytic performance for CO oxidation with a T50 of 98 °C, and also good stability in 1400 min. Compared to the catalysts prepared by C and H method, CH-1:8 has the highest specific surface of 156.1 m2 g-1, and the better reducibility of CH-1:8 was also observed in CO-TPR. It is also observed the high ratio of adsorbed oxygen/lattice oxygen (1.5) in the XPS result. Moreover, characterizations by the TOF-SIMS method indicated that obtained catalyst CH-Ce/Mn = 1:8 had stronger interactions between Ce and Mn oxides, and the redox cycle of Mn3++Ce4+ ↔ Mn4++Ce3+ was a key process for CO adsorption and oxidation process. According to in-situ FTIR, the possible reaction pathway for CO was deduced in three ways. CO directly oxidize with O2 to CO2, CO adsorbed on Mn4+ and Ce3+ reacts with O to form intermediates (COO-) (T > 50 °C) and carbonates (T > 90 °C), which are further oxidized into CO2.
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Affiliation(s)
- Zhiping Ye
- College of Environment, Zhejiang University of Technology, 18 Chaowang RD, Hangzhou, 310014, PR China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, PR China
| | - Yang Liu
- College of Environment, Zhejiang University of Technology, 18 Chaowang RD, Hangzhou, 310014, PR China
| | - Anton Nikiforov
- Ghent University, Faculty of Engineering, Department of Applied Physics, Research Unit Plasma Technology, Sint-Pietersnieuwstraat 41, 9000, Ghent, Belgium
| | - Jiayu Ji
- College of Environment, Zhejiang University of Technology, 18 Chaowang RD, Hangzhou, 310014, PR China
| | - Bo Zhao
- Zhejiang Tuna Environmental Science & Technology Co., Ltd, Shaoxing, 312071, PR China.
| | - Jiade Wang
- College of Environment, Zhejiang University of Technology, 18 Chaowang RD, Hangzhou, 310014, PR China.
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Qin F, Fan X, Ma W. Selective Oxidation of Triethylamine Catalyzed by Mn-Ce/ZSM-5. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37220175 DOI: 10.1021/acs.langmuir.3c00696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The selective catalytic oxidation (SCO) of triethylamine (TEA) to harmless nitrogen (N2), carbon dioxide (CO2), and water (H2O) is of green elimination technology. In this paper, Mn-Ce/ZSM-5 with different proportions of MnOx/CeOx were studied for the selective catalytic combustion of TEA. The catalysts were characterized by XRD, BET, H2-TPR, XPS, and NH3-TPD and their catalytic activities were analyzed. The results showed that MnOx was the main active component. The addition of a small amount of CeOx promotes the generation of high-valence Mn ions, which reduces the reduction temperature of the catalyst and increases the redox capacity of the catalyst. In addition, the synergistic effect between CeOx and MnOx significantly improves the mobility of reactive oxygen species on the catalyst, thus improving the catalytic performance of the catalyst. The catalytic oxidation performance of TEA over 15Mn5Ce/ZSM-5 is the highest. TEA can be completely converted at 220 °C, and the selectivity for N2 is up to 80%. The reaction mechanism was studied by in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS).
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Affiliation(s)
- Fan Qin
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, People's Republic of China
| | - Xiaojuan Fan
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, People's Republic of China
| | - Weihua Ma
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, People's Republic of China
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Ma G, Tang W, Wang A, Zhang L, Guan J, Han N, Chen Y. Heterojunctioned CuO/Cu 2O catalyst for highly efficient ozone removal. J Environ Sci (China) 2023; 125:340-348. [PMID: 36375919 DOI: 10.1016/j.jes.2022.01.032] [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: 10/21/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 06/16/2023]
Abstract
In recent years, near surface ozone pollution, has attracted more and more attention, which necessitates the development of high efficient and low cost catalysts. In this work, CuO/Cu2O heterojunctioned catalyst is fabricated by heating Cu2O at high temperature, and is adopted as ozone decomposition catalyst. The results show that after Cu2O is heated at 180°C conversion of ozone increases from 75.2% to 89.3% at mass space velocity 1,920,000 cm3/(g·hr) in dry air with 1000 ppmV ozone, which indicates that this heterojunction catalyst is one of the most efficient catalysts reported at present. Catalysts are characterized by electron paramagnetic resonance spectroscopy and ultraviolet photoelectron spectroscopy, which confirmed that the heterojunction promotes the electron transfer in the catalytic process and creates more defects and oxygen vacancies in the CuO/Cu2O interfaces. This procedure of manufacturing heterostructures would also be applicable to other metal oxide catalysts, and it is expected to be more widely applied to the synthesis of high-efficiency heterostructured catalysts in the future.
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Affiliation(s)
- Guojun Ma
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Wenxiang Tang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Anqi Wang
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Le Zhang
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jian Guan
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Ning Han
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yunfa Chen
- Key Laboratory of Science and Technology on Particle Materials, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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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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Xiao J, Wang M, Wang Y, Li X, He J, Liu Y, Xu Q, Li H, Li N, Chen D, Lu J. Rational Design of Bimetal Mn-Ce Nanosheets Anchored on Porous Nano-sized ZSM-5 Zeolite for Adsorption-Enhanced Catalytic Oxidation of Toluene. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jun Xiao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Mengmeng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Yaru Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Xunxun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Jiaqin He
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Yunchong Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu215123, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou215123, P.R. China
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Wang F, Dong W, Qu D, Huang Y, Chen Y. Synergistic Catalytic Conversion of Cellulose into Glycolic Acid over Mn-Doped Bismuth Oxyiodide Catalyst Combined with H-ZSM-5. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fenfen Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Wendi Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Dongxue Qu
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
| | - Yongchao Huang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yuhui Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Energy Science and Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
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Zhuang Y, Xu Z, Zhang X, Jiang M, Liu P, Chen S, Liu Y, Han Z. Vacuum-treated MnxCe1-xO2 nanorods for catalytic ozonation of 1,2-dichloroethane. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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8
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Enhancing Ozone Oxidation of Reverse Osmosis Concentrate Using Activated Carbon-Supported Cu–Co–Mn Catalysts. Catal Letters 2022. [DOI: 10.1007/s10562-022-04064-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Tang H, Wang Z, Shao J, Lin F, Liu P, He Y, Zhu Y. Catalytic Decomposition of Residual Ozone over Cactus-like MnO 2 Nanosphere: Synergistic Mechanism and SO 2/H 2O Interference. ACS OMEGA 2022; 7:9818-9833. [PMID: 35350343 PMCID: PMC8945177 DOI: 10.1021/acsomega.2c00120] [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: 01/07/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
Ground-level ozone is an irritant and is harmful to human respiratory and nervous systems. Thus, four manganese oxides with different crystals were hydrothermally synthesized to decompose residual ozone (deO3) in an ozone synergistic-oxidation system. Among them, a cactus-like MnO2-IV nanosphere exhibited the highest deO3 activity, with excellent tolerance to water vapor and SO2/H2O, which could maintain >88% deO3 efficiency in the high-humidity and sulfur-containing conditions. It benefits from the unique morphology, high specific surface area, superior redox properties, oxygen chemisorption capabilities, abundant surface-active hydroxyl species, and low valence Mn species. More importantly, the detailed interference mechanism of O2/O3/H2O/SO2 molecules on MnO2-IV was revealed utilizing in situ diffused reflectance infrared Fourier transform spectroscopy and X-ray photoelectron spectroscopy. H2O generally caused recoverable deactivation, but that caused by SO2 was irreversible. The synergistic effect of SO2/H2O promoted the formation of an unstable sulfate species, thereby deepening the deactivation but inhibiting the irreversible poisoning. Finally, nine specific steps to decompose ozone via surface-active hydroxyl/intermediates were established.
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Affiliation(s)
- Hairong Tang
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
| | - Zhihua Wang
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
| | - Jiaming Shao
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
- Zhejiang
SUPCON Technology Co., Ltd., Hangzhou 310053, P.R. China
| | - Fawei Lin
- School
of Environmental Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
| | - Peixi Liu
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
| | - Yong He
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
| | - Yanqun Zhu
- State
Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P.R. China
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Shao M, Hong W, Zhu T, Jiang X, Sun Y, Hou S. High performance ozone decomposition over MnAl-based mixed oxide catalysts derived from layered double hydroxides. RSC Adv 2022; 12:26834-26845. [PMID: 36320860 PMCID: PMC9490808 DOI: 10.1039/d2ra04308d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/09/2022] [Indexed: 11/29/2022] Open
Abstract
Mesoporous and dispersed MnAl-based mixed metal oxide catalysts (MnxAlO) were fabricated via the calcination of layered double hydroxide (LDH) precursors prepared by the coprecipitation method. Their physiochemical properties were characterized and their catalytic activities for ozone decomposition were evaluated. The results indicate that the prepared MnxAlO catalysts have excellent catalytic activity owing to their large specific surface area, abundant surface oxygen vacancies and lower average Mn oxidation states. The Mn/Al atomic ratio and calcination temperature are found to significantly affect the textural properties and catalytic activity for ozone decomposition. The Mn2AlO-400 catalyst (Mn/Al = 2, calcined at 400 °C) exhibited 84.8% ozone conversion after 8 h reaction under an initial ozone concentration of 45 ± 2 ppm, 30 ± 1 °C, a relative humidity of 50% ± 3%, and a space velocity of 550 000 h−1. The results also show that the catalytic activity of Mn2AlO-400, which was deactivated owing to the accumulation of oxygen-related intermediates, was recovered by calcination at 400 °C under a N2 atmosphere for 1 h. A possible reason for catalyst deactivation and regeneration is proposed. This work provides a facile method for fabricating MnxAlO catalysts with excellent characteristics to achieve better catalytic activity, which are promising candidates for practical ozone decomposition. Mesoporous and highly dispersed MnAl-based mixed metal oxide catalysts (MnxAlO) were fabricated via the calcination of layered double hydroxides (LDHs), which presented excellent catalytic activity for ozone decomposition.![]()
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Affiliation(s)
- Mingpan Shao
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Wei Hong
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Tianle Zhu
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Xinxin Jiang
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Ye Sun
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Shiyu Hou
- School of Space and Environment, Beihang University, Beijing 100191, 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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