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Zhang W, Xing Y, Su W, Wang J, Jia H, Cui Y, Chen J, Zhang H. Degradation of o-dichlorobenzene by DBD-NTP co-modified titanium gel catalyst. J Environ Sci (China) 2024; 143:71-84. [PMID: 38644025 DOI: 10.1016/j.jes.2023.07.035] [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: 04/15/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 04/23/2024]
Abstract
In order to study the degradation process of dioxins in industrial flue gas, the decomposition of o-dichlorobenzene (o-DCB) in a DBD plasma catalytic reactor was investigated. The results showed that an NTP-catalyzed system, especially using the CuMnTiOx catalyst, had better o-DCB degradation performance compared to plasma alone. The combination of the CuMnTiOx catalyst with NTP can achieve a degradation efficiency of up to 97.2% for o-DCB; the selectivity of CO and CO2 and the carbon balance were 40%, 45%, and 85%, respectively. The dielectric constant and electrical property results indicated that the surface discharge capacity of the catalysts played a major role in the degradation of o-DCB, and a higher dielectric constant could suppress the plasma expansion and enhance the duration of the plasma discharge per discharge cycle. According to the O1s XPS and O2-TPD results, the conversion of CO to CO2 follows the M-v-K mechanism; thus, the active species on the catalyst surface play an important role. Moreover, the CuMnTiOx and NTP mixed system exhibited excellent stability, which is probably because Cu doping improved the lifetime of the catalyst. This work can provide an experimental and theoretical basis for research in the degradation of o-DCB by plasma catalyst systems.
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Affiliation(s)
- Wenbo Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yi Xing
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Wei Su
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Guangdong Province Engineering Laboratory for Air Pollution Control, Guangzhou 510530, China.
| | - Jiaqing Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Haoqi Jia
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan 030006, China
| | - Yongkang Cui
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jing Chen
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Hui Zhang
- Sinosteel Maanshan Mine Research Institute Co. Ltd., Anhui 243071, China
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Yang J, Huang Q, Sun Y, An G, Li X, Mao J, Wei C, Yang B, Li D, Tao T, Yang H. Photocatalytic oxidation of formaldehyde under visible light using BiVO 4-TiO 2 synthesized via ultrasonic blending. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:30085-30098. [PMID: 38598155 DOI: 10.1007/s11356-024-33192-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Formaldehyde (HCHO) is one of the primary indoor air pollutants, and efficiently eliminating it, especially at low concentrations, remains challenging. In this study, BiVO4-TiO2 catalyst was developed using ultrasonic blending technology for the photocatalytic oxidation of low-level indoor HCHO. The crystal structure, surface morphology, element distribution, and active oxidation species of the catalyst were examined using XRD, SEM, TEM, UV-Vis, EDS, and ESR techniques. Our results demonstrated that the BiVO4-TiO2 catalyst, prepared by ultrasonic blending, exhibited good oxidation performance and stability. The HCHO concentration reduced from 1.050 to 0.030 mg/m3 within 48 h, achieving a removal rate of 97.1%. The synergy between BiVO4 and TiO2 enhanced the efficiency of separating photogenerated carriers and minimized the likelihood of recombination between photogenerated electrons and holes. Additionally, this synergy significantly enhanced the presence of hydroxyl radicals (·OH) on the catalyst, resulting in an oxidation performance superior to that of either BiVO4 or TiO2. Our research offers valuable insights for the development of new photocatalysts to address HCHO pollution.
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Affiliation(s)
- Jingyi Yang
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Qiong Huang
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
| | - Yueyin Sun
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Guofang An
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Xin Li
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Junjie Mao
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Chen Wei
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Bo Yang
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Dawei Li
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Tao Tao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
| | - Hong Yang
- Department of Geography and Environmental Science, University of Reading, Whiteknights, Reading, RG6 6AB, UK
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Bai B, Huang Y, Chen J, Lei J, Wang S, Wang J. Ultrathin MnO 2 with strong lattice disorder for catalytic oxidation of volatile organic compounds. J Colloid Interface Sci 2024; 653:1205-1216. [PMID: 37797496 DOI: 10.1016/j.jcis.2023.09.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/17/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Catalytic oxidation proves the most promising technology for volatile organic compounds (VOCs) abatement. Lattice disorder plays a crucial role in the catalytic activity of catalysts due to the exposure of more active sites. Inspired by this, we successfully prepared a series of ε-MnO2 with different lattice disorder defects via several simple methods and applied them to the catalytic oxidation of two typical VOCs (toluene and acetone). Various characterizations and performance tests confirm that the ultrathin (1.4-1.8 nm) structure and strong lattice disorder can enhance the low temperature reduction and reactive oxygen species, so that MnO2-R exhibits excellent toluene and acetone oxidation activities. In-situ DRIFTS tests were carried out to detect reaction intermediates in the toluene and acetone oxidation process on the catalyst surface. Moreover, we propose a possible synergistic mechanism for toluene and acetone mixtures catalytic oxidation. This work reveals the important role of lattice disorder defects in the catalytic oxidation of VOCs on Mn-based catalysts, and deepens the insights of the reaction path in toluene and acetone catalytic oxidation.
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Affiliation(s)
- Baobao Bai
- College of Environmental Science and Engineering, Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
| | - Ying Huang
- College of Environmental Science and Engineering, Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
| | - Jiajia Chen
- College of Environmental Science and Engineering, Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
| | - Juan Lei
- Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030018, Shanxi, PR China.
| | - Shuang Wang
- College of Environmental Science and Engineering, Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China.
| | - Jiancheng Wang
- College of Environmental Science and Engineering, Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
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Duan C, Zhou Y, Meng M, Huang H, Ding H, Zhang Q, Huang R, Yan M. Research on the elimination of low-concentration formaldehyde by Ag loaded onto Mn/CeO 2 catalyst at room temperature. Phys Chem Chem Phys 2023; 25:24495-24507. [PMID: 37655797 DOI: 10.1039/d3cp01612a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Formaldehyde (HCHO) is one of the major air pollutants, and its effective removal at room temperature has proven to be a great challenge. In this study, an Ag/Mn/CeO2 catalyst for the catalytic oxidation of low-concentration HCHO at room temperature was prepared by a hydrothermal-calcination method. The removal performance of the Ag/Mn/CeO2 catalyst for HCHO was systematically studied, and its surface chemical properties and microstructure were analyzed. The incorporation of Ag did not change the mesoporous structure of the Mn/CeO2 catalyst but reduced the pore size and specific surface area. The Ag species included metallic Ag as the main component and part of Ag+. The well-dispersed Ag species on the catalyst provided sufficient active sites for the catalytic oxidation of HCHO. The more the Ag active sites, the more the lattice defects and oxygen vacancies generated from the interaction of Ag with Mn/CeO2. Precisely because of this, the Ag/Mn/CeO2 catalyst exhibited high catalytic activity for HCHO at room temperature with a removal efficiency of 96.76% within 22 h, which is 22.91% higher than that of the Mn/CeO2 catalyst. Moreover, the Ag/Mn/CeO2 catalyst showed good cycling stability and the removal efficiency reached 85.77% after five cycles. Therefore, the as-prepared catalyst is an effective and sustainable material that can be used to remove HCHO from actual indoor polluted air. This paper provides ideas for the research and development of efficient catalysts.
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Affiliation(s)
- Chaomin Duan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Yanlin Zhou
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Mianwu Meng
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin, Guangxi 541004, China.
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Huang Huang
- Guilin Huayue Entech Limited Company, Guilin, Guangxi 541805, China.
| | - Hua Ding
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Qi Zhang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Renyuan Huang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Mengjuan Yan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
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Rao R, Ma S, Gao B, Bi F, Chen Y, Yang Y, Liu N, Wu M, Zhang X. Recent advances of metal-organic framework-based and derivative materials in the heterogeneous catalytic removal of volatile organic compounds. J Colloid Interface Sci 2023; 636:55-72. [PMID: 36621129 DOI: 10.1016/j.jcis.2022.12.167] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/06/2022] [Accepted: 12/31/2022] [Indexed: 01/05/2023]
Abstract
Since the environmental hazards of volatile organic compounds (VOCs) are well known, heterogeneous catalysis has become one of the most popular methods to treat VOCs due to its environmental friendliness and simplicity of operation. Although a large number of reports have reviewed the application of catalytic oxidation for the degradation of VOCs, relatively few reports are based on this direction of metal organic frameworks (MOFs) and MOF derivatives. Herein, this paper reviews the recent applications of heterogeneous catalytic technologies in the degradation of VOCs, including photocatalysis, thermal catalysis and other catalytic approaches. The applications of MOFs and their derivatives in VOCs degradation, such as the progress of MOF-derived metal oxides in the treatment of toluene, were highlighted. The mechanisms of VOCs degradation by different catalytic approaches were systematically presented. Finally, we presented the views and directions of VOCs treatment technology development. We hope that this reaction type-oriented review will provide important insights into MOFs and MOF-derived materials for VOCs pollution control.
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Affiliation(s)
- Renzhi Rao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shuting Ma
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Bin Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Fukun Bi
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yifan Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yang Yang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ning Liu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Minghong Wu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
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Zhao Z, Ma S, Gao B, Bi F, Qiao R, Yang Y, Wu M, Zhang X. A systematic review of intermediates and their characterization methods in VOCs degradation by different catalytic technologies. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Highly efficient acetone oxidation over homogeneous Mn-Al oxides with enhanced OMS-2 active phase. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Dai W, Li Z, Li C, Zhang C, Wang F, Liu P, Qiao H. Revealing the effects of preparation methods over Ce-MnOx catalysts for soot combustion: physicochemical properties and catalytic performance. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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9
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Zhang J, Ma Y, Sun Y, Zhu Y, Wang L, Lin F, Ma Y, Ji W, Li Y, Wang L. Enhancing deep mineralization of refractory benzotriazole via carbon nanotubes-intercalated cobalt copper bimetallic oxide nanosheets activated peroxymonosulfate process: Mechanism, degradation pathway and toxicity. J Colloid Interface Sci 2022; 628:448-462. [DOI: 10.1016/j.jcis.2022.07.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/12/2022] [Accepted: 07/26/2022] [Indexed: 10/16/2022]
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