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Wang C, Li Y, Li Z, Meng C, Ma Y, Sun X, Ning P, Li K, Wang F. Design Strategies for High-Performance NH 3-SCO Catalysts: Identifying and Modulating Direct Anchoring Sites for Ag on TiO 2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 39155565 DOI: 10.1021/acs.est.4c06499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
Ammonia (NH3) slip from diesel vehicle aftertreatment systems and internal combustion engines fueled by NH3 or NH3/H2 poses serious environmental problems. Ag-based catalysts are widely used for the selective catalytic oxidation of NH3 to N2 (NH3-SCO), and their performance is greatly dependent on the state of Ag, which is influenced by the anchoring sites on the support. Despite efforts to identify the direct anchoring sites of metal atoms on TiO2, conflicting views persist. Here, we compared the correlation between Ag dispersion and the content of hydroxyl (OH) groups or defects on TiO2 and conducted density functional theory (DFT) calculations, and the results confirmed that the surface OH groups of TiO2 serve as the direct anchoring sites for Ag. By modulating the OH group content through thermal induction, the optimal OH group content on TiO2-800 resulted in more metallic Ag nanoparticles (Ag0 NPs) in larger sizes, leading to the development of an excellent NH3-SCO catalyst. Moreover, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), kinetic studies, and DFT calculations suggested that more Ag0 NPs in larger sizes on 10Ag/TiO2-800 were conducive to O2 activation and NH3 dissociation. Our findings provide new insights for designing efficient NH3-SCO catalysts, and OH groups as direct anchoring sites could be extended to other metals and supports for the rational design of catalysts.
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Affiliation(s)
- Chunxue Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yuan Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
| | - Zhao Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Caixia Meng
- Division of Energy Research Resources, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Yixing Ma
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
| | - Xin Sun
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
| | - Kai Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
| | - Fei Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
- National Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming, 650500, China
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2
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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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3
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Wu X, Sun S, Wang R, Huang Z, Shen H, Zhao H, Jing G. Pt single atoms and defect engineering of TiO 2-nanosheet-assembled hierarchical spheres for efficient room-temperature HCHO oxidation. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131434. [PMID: 37146337 DOI: 10.1016/j.jhazmat.2023.131434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/05/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023]
Abstract
Achieving high atomic utilization and low cost of desirable Pt/TiO2 catalysts is a major challenge for room temperature HCHO oxidation. Here, the strategy of anchoring stable Pt single atoms by abundant oxygen vacancies over TiO2-nanosheet-assembled hierarchical spheres (Pt1/TiO2-HS) was designed to eliminate HCHO. A superior HCHO oxidation activity and CO2 yield (∼100% CO2 yield) at relative humidity (RH) > 50% over Pt1/TiO2-HS is achieved for long-term run. We attribute the excellent HCHO oxidation performance to the stable isolated Pt single atoms anchored on the defective TiO2-HS surface. The Ptδ+ on the Pt1/TiO2-HS surface has a facile intense electron transfer with the support by forming Pt-O-Ti linkages, driving HCHO oxidation effectively. Further in situ HCHO-DRIFTS revealed that the dioxymethylene (DOM) and HCOOH/HCOO- intermediates were further degraded via active OH- and adsorbed oxygen on the Pt1/TiO2-HS surface, respectively. This work may pave the way for the next generation of advanced catalytic materials for high-efficiency catalytic HCHO oxidation at room temperature.
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Affiliation(s)
- Xiaomin Wu
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Shaodi Sun
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Ruichen Wang
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Zhiwei Huang
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Huazheng Shen
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Huawang Zhao
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Guohua Jing
- Department of Environmental Science & Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China.
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4
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Gao W, Tang X, Yi H, Jiang S, Yu Q, Xie X, Zhuang R. Mesoporous molecular sieve-based materials for catalytic oxidation of VOC: A review. J Environ Sci (China) 2023; 125:112-134. [PMID: 36375898 DOI: 10.1016/j.jes.2021.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/15/2021] [Accepted: 11/11/2021] [Indexed: 06/16/2023]
Abstract
As the main contributor of the formation of particulate matter as well as ozone, volatile organic compounds (VOCs) greatly affect human health and the environmental quality. Catalytic combustion/oxidation has been viewed as an efficient, economically feasible and environmentally friendly way for the elimination of VOCs. Supported metal catalyst is the preferred type of catalysts applied for VOCs catalytic combustion because of the synergy between active components and support as well as its flexibility in the composition. The presence of support not only plays the role of keeping the catalyst with good stability and mechanical strength, but also provides a large specific surface for the good dispersion of active components, which could effectively improve the performance of catalyst as well as decrease the usage of active components, especially the noble metal amount. Mesoporous molecular sieves, owing to their large surface area, unique porous structures, large pore size as well as uniform pore-size distribution, were viewed as superior support for dispersing active components. This review focuses on the recent development of mesoporous molecular sieve supported metal catalysts and their application in catalytic oxidation of VOCs. The effect of active component types, support structure, preparation method, precursors, etc. on the valence state, dispersion as well as the loading of active species were also discussed and summarized. Moreover, the corresponding conversion route of VOCs was also addressed. This review aims to provide some enlightment for designing the supported metal catalysts with superior activity and stability for VOCs removal.
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Affiliation(s)
- Wei Gao
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiaolong Tang
- Department of Environmental Science and Engineering, 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, Beijing 100083, China
| | - Honghong Yi
- Department of Environmental Science and Engineering, 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, Beijing 100083, China
| | - Shanxue Jiang
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China
| | - Qingjun Yu
- Department of Environmental Science and Engineering, 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, Beijing 100083, China.
| | - Xizhou Xie
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ruijie Zhuang
- Department of Environmental Science and Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
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5
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Wei T, Zhao X, Li L, Wang L, Lv S, Gao L, Yuan G, Li L. Enhanced Formaldehyde Oxidation Performance of the Mesoporous TiO 2(B)-Supported Pt Catalyst: The Role of Hydroxyls. ACS OMEGA 2022; 7:25491-25501. [PMID: 35910119 PMCID: PMC9330097 DOI: 10.1021/acsomega.2c02490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
As one of the crystal phases of titania, TiO2(B) was first utilized as a catalyst carrier for the oxidation of formaldehyde (HCHO). The mesoporous TiO2(B) loaded with Pt nanoparticles enhanced the HCHO oxidation reaction whose reaction rate was 4.5-8.4 times those of other crystalline TiO2-supported Pt catalysts. Simultaneously, Pt/TiO2(B) exhibited long-term stable HCHO oxidation performance. The structural characterization results showed that in comparison with Pt/anatase, Pt/TiO2(B) had more abundant hydroxyls, facilitating increasing the content of oxygen species. Studies on the role of hydroxyls in HCHO oxidation of Pt/TiO2(B) illustrated that synergistic involvement of terminally bound hydroxyls and bridging hydroxyls in HCHO oxidation accelerated the transformation from HCHO to formate via dioxymethylene. Moreover, hydroxyls could avoid the accumulation of excessive formate on Pt/TiO2(B) and promote the rapid oxidation of CO. Accordingly, the hydroxyl groups could accelerate each substep of formaldehyde oxidation, which enabled Pt/TiO2(B) to exhibit excellent formaldehyde oxidation performance.
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Affiliation(s)
- Tongtong Wei
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Xuejuan Zhao
- School
of Materials Science and Engineering, Nanjing
Institute of Technology, Nanjing 211167, P. R. China
| | - Long Li
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Lei Wang
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Shenjie Lv
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Lei Gao
- Jiangsu
Architectural Decoration Integrated Installation Engineering Technology
Research Center, Nanjing Guohao Decoration
& Installation Engineering Co., Ltd., Nanjing, 210012, P. R. China
| | - Gaosong Yuan
- Jiangsu
Architectural Decoration Integrated Installation Engineering Technology
Research Center, Nanjing Guohao Decoration
& Installation Engineering Co., Ltd., Nanjing, 210012, P. R. China
| | - Licheng Li
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
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6
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Li N, Huang B, Dong X, Luo J, Wang Y, Wang H, Miao D, Pan Y, Jiao F, Xiao J, Qu Z. Bifunctional zeolites-silver catalyst enabled tandem oxidation of formaldehyde at low temperatures. Nat Commun 2022; 13:2209. [PMID: 35459866 PMCID: PMC9033842 DOI: 10.1038/s41467-022-29936-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 03/24/2022] [Indexed: 11/09/2022] Open
Abstract
Bifunctional catalysts with tandem processes have achieved great success in a wide range of important catalytic processes, however, this concept has hardly been applied in the elimination of volatile organic compounds. Herein, we designed a tandem bifunctional Zeolites-Silver catalyst that enormously boosted formaldehyde oxidation at low temperatures, and formaldehyde conversion increased by 50 times (100% versus 2%) at 70 °C compared to that of monofunctional supported silver catalyst. This is enabled by designing a bifunctional catalyst composed of acidic ZSM-5 zeolite and silver component, which provides two types of active sites with complementary functions. Detached acidic ZSM-5 activates formaldehyde to generate gaseous intermediates of methyl formate, which is more easily oxidized by subsequent silver component. We anticipate that the findings here will open up a new avenue for the development of formaldehyde oxidation technologies, and also provide guidance for designing efficient catalysts in a series of oxidation reactions.
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Affiliation(s)
- Na Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Bin Huang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Xue Dong
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Jinsong Luo
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| | - Yi Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Hui Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Dengyun Miao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| | - Feng Jiao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
| | - Jianping Xiao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
| | - Zhenping Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China.
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7
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Song B, Kim J, Chung I, Yun Y. Mesoporous silica-supported Pt catalysts in enantioselective hydrogenation of ethyl pyruvate. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Metal–organic frameworks derived Ag/Co3O4–MnO2 for the catalytic oxidation of formaldehyde. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-022-02163-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Zhu H, Wu KJ, He CH. Continuous Synthesis of Uniformly Dispersed Mesoporous SBA-15 Supported Silver Nanoparticles in a Coiled Flow Inverter Reactor. Front Chem 2021; 9:747105. [PMID: 34631668 PMCID: PMC8492998 DOI: 10.3389/fchem.2021.747105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 09/13/2021] [Indexed: 11/13/2022] Open
Abstract
Mesoporous silica supported nanocatalysts have shown great potential in industrial processes due to their unique properties, such as high surface area, large pore volume, good chemomechanical stability and so on. Controllable and tunable synthesis of supported nanocatalysts is a crucial problem. Continuous synthesis of supported nanoparticles has been reported to get uniformly dispersed nanomaterials. Here, a method for continuous synthesis of uniformly dispersed mesoporous SBA-15 supported silver nanoparticles in a coiled flow inverter (CFI) microreactor is described. Compared to Ag/SBA-15 synthesized in the conventional batch reactor and Ag synthesized in continuous flow, mesoporous silica nanocatalysts synthesized in continuous flow are found to have smaller average size (7-11 nm) and narrower size distribution. The addition of capping agents can effectively change the characteristic of catalysts. Moreover, two kinds of support with different surface area and pore size have been added into the continuous synthesis. This method can provide further understandings for the synthesis of uniformly dispersed supported nanocatalysts in continuous flow, especially for mesoporous nanomaterials, which provides the possibilities of large-scale yield process of supported nanocatalysts in industry.
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Affiliation(s)
- Hai Zhu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Zhejiang University-Quzhou, Quzhou, China
| | - Ke-Jun Wu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Zhejiang University-Quzhou, Quzhou, China
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
| | - Chao-Hong He
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Zhejiang University-Quzhou, Quzhou, China
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10
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Li T, Zhao J, Quan Y, Luo D, Miao C, Ren J. The improved activity of Co 3O 4 nanorods using silver in the catalytic oxidation of toluene. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37592-37602. [PMID: 33715125 DOI: 10.1007/s11356-021-13351-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
Co3O4 nanorods with diameters of ~0.15 μm and lengths of ~1 μm were prepared using a hydrothermal method via the assembly of microcrystals and tested in the catalytic oxidation of toluene. The catalytic performance of Co3O4 nanorods was improved by the addition of Ag at various concentrations, and the 7% Ag/Co3O4 catalyst achieves a toluene conversion of 90% at 256 °C with a space velocity of 78,000 mL g-1 h-1, which is much lower than that of the pristine Co3O4 (269 °C). The addition of Ag promoted the activation of the surface oxygen species and the formation of more oxygen vacancies, improving the relative low-temperature reducibility of Co3O4, which is favorable for toluene oxidation. Moreover, the 7% Ag/Co3O4 catalyst showed an excellent stability for toluene oxidation at 250 and 260 °C for 50 h under the same conditions.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China
| | - Jinxian Zhao
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China
| | - Yanhong Quan
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China
| | - Dongmou Luo
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China
| | - Chao Miao
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China
| | - Jun Ren
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024, China.
- Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education, 79 Yingze West Street, Taiyuan, 030024, China.
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11
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Wang Y, Huang B, Xu J, Li N, Qu Z. Hydroxyl Groups Promoted Ag Dispersion and Excellent Performance of Ag/Al2O3 Catalyst for HCHO Oxidation. Catal Letters 2021. [DOI: 10.1007/s10562-020-03464-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Yu H, Yu Z, Yang F, Yan X, Yin H. Enhanced strong metal–support interactions between Pt and WO 3–x nanowires for the selective hydrogenation of p-chloronitrobenzene. NEW J CHEM 2021. [DOI: 10.1039/d1nj03336k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Pt/WO3–x nanocatalysts demonstrate significantly enhanced catalytic performance due to the strong interaction between Pt and WO3–x nanowires.
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Affiliation(s)
- Hongbo Yu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, P. R. China
| | - Zhiyong Yu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, P. R. China
| | - Fan Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, P. R. China
| | - Xuedong Yan
- Ningbo Polytechnic, 388 East Lushan Road, Ningbo, Zhejiang, 315800, P. R. China
| | - Hongfeng Yin
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, P. R. China
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13
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Liu X, Chen W, Wang W. Highly active and stable hydrogen production by room-temperature formaldehyde oxidation on Fe 2O 3/Pd. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01619a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Fe2O3/Pd catalysts were prepared by impregnation and coprecipitation methods, and exhibit a high and stable hydrogen production rate of 293.98 mL min−1 g−1 with a Pd loading of 1 wt% at 298 K.
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Affiliation(s)
- Xiaogang Liu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, P. R. China
- Henan Province Key Laboratory of Utilization of Non Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, Henan 464000, P. R. China
| | - Wenjie Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, P. R. China
| | - Wei Wang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, P. R. China
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14
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Effect of the variation of metal and cerium loadings on CeO2x–TiO2(100−x) supports in the complete catalytic oxidation of formaldehyde. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04299-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Size effect of γ-Al2O3 supports on the catalytic performance of Pd/γ-Al2O3 catalysts for HCHO oxidation. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111112] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Yadav R, Baskaran T, Kaiprathu A, Ahmed M, Bhosale SV, Joseph S, Al‐Muhtaseb AH, Singh G, Sakthivel A, Vinu A. Recent Advances in the Preparation and Applications of Organo‐functionalized Porous Materials. Chem Asian J 2020; 15:2588-2621. [DOI: 10.1002/asia.202000651] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/26/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Rekha Yadav
- Department of Chemistry Sri Venkateswara College University of Delhi Delhi 110021 India
| | - Thangaraj Baskaran
- Department of Chemistry Central University of Kerala Periye P.O. 671320 Kerala India
| | - Anjali Kaiprathu
- Department of Chemistry Central University of Kerala Periye P.O. 671320 Kerala India
| | - Maqsood Ahmed
- Department of Chemistry University of Delhi Delhi India
| | | | - Stalin Joseph
- Global Innovative Center for Advanced Nanomaterials Faculty of Engineering and Built Environment The University of Newcastle Callaghan 2308, NSW Australia
| | - Ala'a H. Al‐Muhtaseb
- Department of Petroleum and Chemical Engineering College of Engineering Sultan Qaboos University Muscat 123 P.O.Box 33 Oman
| | - Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials Faculty of Engineering and Built Environment The University of Newcastle Callaghan 2308, NSW Australia
| | | | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials Faculty of Engineering and Built Environment The University of Newcastle Callaghan 2308, NSW Australia
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17
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Liu M, Zhang Q, Shi Y, Wang H, Wei G, Zhang T, Sun H, Wang J, Zhang Y. AuPd bimetal immobilized on amine‐functionalized SBA‐15 for hydrogen generation from formic acid: The effect of the ratio of toluene to DMF. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mo Liu
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Qiulin Zhang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Yuzhen Shi
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Huimin Wang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Guangcheng Wei
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Tengxiang Zhang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Haiyang Sun
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Jifeng Wang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
| | - Yaqing Zhang
- Faculty of Environmental Science and EngineeringKunming University of Science and Technology Kunming P. R. China
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18
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Li A, Tang Y, Dong C, Wang G. Facile synthesis of Ag-CuO/SBA-15 for aerobic epoxidation of olefins with high activity. NANOTECHNOLOGY 2019; 30:434002. [PMID: 31315091 DOI: 10.1088/1361-6528/ab32fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An efficient 'structure-property' catalyst Ag-CuO/SBA-15 for aerobic epoxidation of olefins was designed and prepared via a simple grinding method, which provided a dynamic assembly driving force to push the precursors into the channels step by step. Partial melting on the precursor particles surface is necessary for synthesizing the Ag-CuO/SBA-15 catalysts. During the thermal grinding process, the partial melting Cu(NO3)2 first adhered on AgNO3 particles surface because the N of AgNO3 possess stronger interaction with Cu(NO3)2 than OH- of SBA-15, then the mixture of melting precursors on AgNO3 particles surface were sucked into the channels of SBA-15 step by step. Finally, high dispersion of both Ag and CuO nanoparticles were formed in the SBA-15 channels after calcination. The interaction between Ag and CuO, which was characterized by high-resolution transmission electron microscopy, UV-vis and x-ray powder diffraction, enhances the catalytic activity of the catalysts, giving high conversion and selectivity to the epoxides. The reaction mechanism is as follows, the solvent xylene molecule was first oxidized on the Ag surface to form methyl-benzaldehyde (R1), and then moved to the CuO surface to form the peroxidic radical (R2), the peroxidic radical attacked the trans-stilbene C=C bonds on the CuO surface to obtain the epoxides. This synergistic effect shows high activity toward the epoxidation of trans-stilbene.
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Affiliation(s)
- Ang Li
- School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology, Suzhou 215009, People's Republic of China
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19
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Xu J, Qu Z, Wang Y, Huang B. HCHO oxidation over highly dispersed Au nanoparticles supported on mesoporous silica with superior activity and stability. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.04.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Liao G, Fang J, Li Q, Li S, Xu Z, Fang B. Ag-Based nanocomposites: synthesis and applications in catalysis. NANOSCALE 2019; 11:7062-7096. [PMID: 30931457 DOI: 10.1039/c9nr01408j] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Ag-Based nanocomposites, including supported Ag nanocomposites and bimetallic Ag nanocomposites, have been intensively investigated as highly efficient catalysts because of their high activity and stability, easy preparation, low cost, and low toxicity. Herein, we systematically summarize and comprehensively evaluate versatile synthetic strategies for the preparation of Ag-based nanocomposites, and outline their recent advances in catalytic oxidation, catalytic reduction, photocatalysis and electrocatalysis. In addition, the challenges and prospects related to Ag-based nanocomposites for various catalytic applications are also discussed. In light of the most recent advances in Ag-based nanocomposites for catalysis applications, this review provides a comprehensive assessment on the material selection, synthesis and catalytic characteristics of these catalysts, which offers a strategic guide to build a close connection between Ag nanocomposites and catalysis applications.
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Affiliation(s)
- Guangfu Liao
- School of Environment and Civil Engineering, Dongguan University of Technology, Guangdong 523808, China.
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21
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Zhang S, Zhao L, Wu Y, Pang Y, Yue X, Li B, Li Q, Zhang J. Controllable synthesis of hierarchical nanoporous ε-MnO2 crystals for the highly effective oxidation removal of formaldehyde. CrystEngComm 2019. [DOI: 10.1039/c9ce00466a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hierarchical nanoporous ε-MnO2 crystals were prepared through thermal decomposition of hydrothermally-synthesized MnCO3 precursors without any external templates or surfactants.
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Affiliation(s)
- Shuai Zhang
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Long Zhao
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Yu Wu
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Yujie Pang
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Xiaoqing Yue
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Bin Li
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Qiang Li
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
| | - Jianbin Zhang
- College of Chemical Engineering
- Inner Mongolia University of Technology
- Hohhot 010051
- China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization
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22
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Li Y, Chen X, Wang C, Zhang C, He H. Sodium Enhances Ir/TiO2 Activity for Catalytic Oxidation of Formaldehyde at Ambient Temperature. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03026] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaobin Li
- 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
| | - Xueyan 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
| | - Chunying Wang
- 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
| | - 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
- 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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23
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de Abreu Rosa AC, Correa CM, Faez R, Bizeto MA, da Silva Martins T, Camilo FF. Direct synthesis of SILVER nanoparticles and polyaniline into the MESOPORES of SBA-15. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1557-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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24
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Hu M, Yao Z, Liu X, Ma L, He Z, Wang X. Enhancement mechanism of hydroxyapatite for photocatalytic degradation of gaseous formaldehyde over TiO2/hydroxyapatite. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.12.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Cao T, Li Z, Xiong Y, Yang Y, Xu S, Bisson T, Gupta R, Xu Z. Silica-Silver Nanocomposites as Regenerable Sorbents for Hg 0 Removal from Flue Gases. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:11909-11917. [PMID: 28823171 DOI: 10.1021/acs.est.7b01701] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Silica-silver nanocomposites (Ag-SBA-15) are a novel class of multifunctional materials with potential applications as sorbents, catalysts, sensors, and disinfectants. In this work, an innovative yet simple and robust method of depositing silver nanoparticles on a mesoporous silica (SBA-15) was developed. The synthesized Ag-SBA-15 was found to achieve a complete capture of Hg0 at temperatures up to 200 °C. Silver nanoparticles on the SBA-15 were shown to be the critical active sites for the capture of Hg0 by the Ag-Hg0 amalgamation mechanism. An Hg0 capture capacity as high as 13.2 mg·g-1 was achieved by Ag(10)-SBA-15, which is much higher than that achievable by existing Ag-based sorbents and comparable with that achieved by commercial activated carbon. Even after exposure to more complex simulated flue gas flow for 1 h, the Ag(10)-SBA-15 could still achieve an Hg0 removal efficiency as high as 91.6% with a Hg0 capture capacity of 457.3 μg·g-1. More importantly, the spent sorbent could be effectively regenerated and reused without noticeable performance degradation over five cycles. The excellent Hg0 removal efficiency combined with a simple synthesis procedure, strong tolerance to complex flue gas environment, great thermal stability, and outstanding regeneration capability make the Ag-SBA-15 a promising sorbent for practical applications to Hg0 capture from coal-fired flue gases.
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Affiliation(s)
- Tiantian Cao
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
| | - Zhen Li
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
| | - Yong Xiong
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
| | - Yue Yang
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
| | - Shengming Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
| | - Teresa Bisson
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Rajender Gupta
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Zhenghe Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University , Beijing 100084, China
- Department of Materials Science and Engineering, Southern University of Science and Technology , Shenzhen 518055, China
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
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26
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Yusuf A, Snape C, He J, Xu H, Liu C, Zhao M, Chen GZ, Tang B, Wang C, Wang J, Behera SN. Advances on transition metal oxides catalysts for formaldehyde oxidation: A review. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2017. [DOI: 10.1080/01614940.2017.1342476] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Abubakar Yusuf
- Research Group of Natural Resources and Environment, Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China , Ningbo, China
- International Doctoral Innovation Centre, The University of Nottingham Ningbo China , Ningbo, China
| | - Colin Snape
- Faculty of Engineering, University of Nottingham, University Park , Nottingham, United Kingdom
| | - Jun He
- Research Group of Natural Resources and Environment, Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China , Ningbo, China
- International Doctoral Innovation Centre, The University of Nottingham Ningbo China , Ningbo, China
| | - Honghui Xu
- Zhejiang Meteorological Science Institute , Hangzhou, China
| | - Chaojie Liu
- Research Group of Natural Resources and Environment, Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China , Ningbo, China
- Centre for Sustainable Energy Technologies, Faculty of Science and Engineering, The University of Nottingham Ningbo China , Ningbo, China
| | - Ming Zhao
- School of Environment, Tsinghua University , Beijing, China
| | - George Zheng Chen
- Research Group of Natural Resources and Environment, Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China , Ningbo, China
- Faculty of Engineering, University of Nottingham, University Park , Nottingham, United Kingdom
- Centre for Sustainable Energy Technologies, Faculty of Science and Engineering, The University of Nottingham Ningbo China , Ningbo, China
| | - Bencan Tang
- Research Group of Natural Resources and Environment, Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China , Ningbo, China
| | - Chengjun Wang
- College of Chemistry and Materials Engineering, Wenzhou University , Wenzhou, China
| | - Jiawei Wang
- Aston Institute of Materials Research, Aston University , Birmingham, United Kingdom
| | - Sailesh N. Behera
- Department of Civil Engineering, Shiv Nadar University , Greater Noida, U.P., India
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27
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Zhao Y, Low ZX, Feng S, Zhong Z, Wang Y, Yao Z. Multifunctional hybrid porous filters with hierarchical structures for simultaneous removal of indoor VOCs, dusts and microorganisms. NANOSCALE 2017; 9:5433-5444. [PMID: 28230878 DOI: 10.1039/c6nr09779k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Air purification often requires multiple layers of filters with different functions to remove various air pollutants, which lead to high pressure drop, high air flow path and frequent filter replacement. In this work, a novel multifunctional Ag@MWCNTs/Al2O3 hybrid filter with a depth-type hierarchical structure for simultaneous removal of fine particles, microorganisms and VOCs was designed and fabricated. The novel hybrid air filter showed leading air purification performances to date, achieving 82.24% degradation of formaldehyde at room temperature, 99.99% formaldehyde degradation at 55 °C and complete retention of indoor airborne microorganisms. The complete particle retention rate (100% retention) based on the most penetrating particle size (MPPS, aerodynamic diameter ≦300 nm) of Ag@MWCNTs/Al2O3 was achieved at an only 35.60% pressure drop compared with the pristine Al2O3 filter, leading to the highest quality factor (Qf) ever reported. Furthermore, the Ag@MWCNTs/Al2O3 hybrid filter showed excellent water repellency (water contact angle of 139.6 ± 2.9°), prolonging the service life of the filters and improving the air purification efficiency. The novel Ag@MWCNTs/Al2O3 hybrid filter exhibits remarkable air purification performance in both laboratory synthetic conditions as well as in the "real world" and shows great promise as an effective single replacement for multiple layers of air purifying filters.
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Affiliation(s)
- Yang Zhao
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China.
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28
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Catalytic performance of Ag/Co-Ce composite oxides during soot combustion in O 2 and NO x : Insights into the effects of silver. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62758-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Bai B, Qiao Q, Arandiyan H, Li J, Hao J. Three-Dimensional Ordered Mesoporous MnO2-Supported Ag Nanoparticles for Catalytic Removal of Formaldehyde. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2635-2640. [PMID: 26629972 DOI: 10.1021/acs.est.5b03342] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three-dimensional (3D) ordered mesoporous Ag/MnO2 catalyst was prepared by impregnation method based on 3D-MnO2 and used for catalytic oxidation of HCHO. Ag nanoparticles are uniformly distributed on the polycrystalline wall of 3D-MnO2. The addition of Ag does not change the 3D ordered mesoporous structure of the Ag/MnO2, but does reduce the pore size and surface area. Ag nanoparticles provide sufficient active site for the oxidation reaction of HCHO, and Ag (111) crystal facets in the Ag/MnO2 are active faces. The 8.9% Ag/MnO2 catalyst shows a higher normalized rate (10.1 nmol·s(-1)·m(-2) at 110 °C) and TOF (0.007 s(-1) at 110 °C) under 1300 ppm of HCHO and 150 000 h(-1) of GHSV, and its apparent activation energy of the reaction is the lowest (39.1 kJ/mol). More Ag active sites, higher low-temperature reducibility, more abundant surface lattice oxygen species, oxygen vacancies, and lattice defects generated from interaction Ag with MnO2 are responsible for the excellent catalytic performance of HCHO oxidation on the 8.9% Ag/MnO2 catalyst. The 8.9% Ag/MnO2 catalyst remained highly active and stable under space velocity increasing from 60 000 to 150 000 h(-1), under initial HCHO concentration increasing from 500 to 1300 ppm, and under the presence of humidity, respectively.
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Affiliation(s)
- Bingyang Bai
- State Key Laboratory of Environmental Criteria and Risk Assessment and Key Laboratory of Eco-Industry of the Ministry of Environmental Protection, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Qi Qiao
- State Key Laboratory of Environmental Criteria and Risk Assessment and Key Laboratory of Eco-Industry of the Ministry of Environmental Protection, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Hamidreza Arandiyan
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales , Sydney, NSW 2052, Australia
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
| | - Jiming Hao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
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30
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Li Y, Zhang C, He H, Zhang J, Chen M. Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01521a] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We previously observed that sodium (Na) addition had a dramatic promotion effect on Pd/TiO2 catalysts for formaldehyde (HCHO) oxidation.
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Affiliation(s)
- Yaobin Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Jianghao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Min Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
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31
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Bai B, Qiao Q, Li J, Hao J. Progress in research on catalysts for catalytic oxidation of formaldehyde. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61007-5] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Chen H, Rui Z, Wang X, Ji H. Multifunctional Pt/ZSM-5 catalyst for complete oxidation of gaseous formaldehyde at ambient temperature. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.03.043] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Wang J, Zhang P, Li J, Jiang C, Yunus R, Kim J. Room-Temperature Oxidation of Formaldehyde by Layered Manganese Oxide: Effect of Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:12372-12379. [PMID: 26426569 DOI: 10.1021/acs.est.5b02085] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Layered manganese oxide, i.e., birnessite was prepared via the reaction of potassium permanganate with ammonium oxalate. The water content in the birnessite was adjusted by drying/calcining the samples at various temperatures (30 °C, 100 °C, 200 °C, 300 °C, and 500 °C). Thermogravimetry-mass spectroscopy showed three types of water released from birnessite, which can be ascribed to physically adsorbed H2O, interlayer H2O and hydroxyl, respectively. The activity of birnessite for formaldehyde oxidation was positively associated with its water content, i.e., the higher the water content, the better activity it has. In-situ DRIFTS and step scanning XRD analysis indicate that adsorbed formaldehyde, which is promoted by bonded water via hydrogen bonding, is transformed into formate and carbonate with the consumption of hydroxyl and bonded water. Both bonded water and water in air can compensate the consumed hydroxyl groups to sustain the mineralization of formaldehyde at room temperature. In addition, water in air stimulates the desorption of carbonate via water competitive adsorption, and accordingly the birnessite recovers its activity. This investigation elucidated the role of water in oxidizing formaldehyde by layered manganese oxides at room temperature, which may be helpful for the development of more efficient materials.
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Affiliation(s)
- Jinlong Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
- Collaborative Innovation Center for Regional Environmental Quality, 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
- Collaborative Innovation Center for Regional Environmental Quality, School of Environment, Tsinghua University , Beijing 100084, China
| | - Jinge Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
| | - Chuanjia Jiang
- Department of Civil and Environmental Engineering, Duke University , Durham, North Carolina 90287, United States
| | - Rizwangul Yunus
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
| | - Jeonghyun Kim
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing 100084, China
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34
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Silver/ion exchanger nanocomposites as low-temperature redox-catalysts for methanal oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.03.227] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Effect of Support on the Activity of Ag-based Catalysts for Formaldehyde Oxidation. Sci Rep 2015; 5:12950. [PMID: 26263506 PMCID: PMC4531785 DOI: 10.1038/srep12950] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 07/14/2015] [Indexed: 12/19/2022] Open
Abstract
Ag-based catalysts with different supports (TiO2, Al2O3 and CeO2) were prepared by impregnation method and subsequently tested for the catalytic oxidation of formaldehyde (HCHO) at low temperature. The Ag/TiO2 catalyst showed the distinctive catalytic performance, achieving the complete HCHO conversion at around 95 °C. In contrast, the Ag/Al2O3 and Ag/CeO2 catalysts displayed much lower activity and the 100% conversion was reached at 110 °C and higher than 125 °C, respectively. The Ag-based catalysts were next characterized by several methods. The characterization results revealed that supports have the dramatic influence on the Ag particle sizes and dispersion. Kinetic tests showed that the Ag based catalyst on the TiO2, Al2O3 or CeO2 supports have the similar apparent activation energy of 65 kJ mol−1, indicating that the catalytic mechanism keep immutability over these three catalysts. Therefore, Ag particle size and dispersion was confirmed to be the main factor affecting the catalytic performance for HCHO oxidation. The Ag/TiO2 catalyst has the highest Ag dispersion and the smallest Ag particle size, accordingly presenting the best catalytic performance for HCHO oxidation.
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36
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Chen D, Qu Z, Lv Y, Lu X, Chen W, Gao X. Effect of oxygen pretreatment on the surface catalytic oxidation of HCHO on Ag/MCM-41 catalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.04.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Titania-supported Pt catalyst reduced with HCHO for HCHO oxidation under mild conditions. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60192-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Zhang J, Li Y, Wang L, Zhang C, He H. Catalytic oxidation of formaldehyde over manganese oxides with different crystal structures. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01461h] [Citation(s) in RCA: 368] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
δ-MnO2 was the best catalyst for catalytic oxidation of HCHO among four types of MnO2 catalyst.
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Affiliation(s)
- Jianghao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Yaobin Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Lian Wang
- 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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39
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Ray S, Banerjee B, Bhaumik A, Mukhopadhyay C. Copper incorporated nanorod like mesoporous silica for one pot aerobic oxidative synthesis of pyridines. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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40
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Huang H, Xu Y, Feng Q, Leung DYC. Low temperature catalytic oxidation of volatile organic compounds: a review. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01733a] [Citation(s) in RCA: 506] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Volatile organic compounds (VOCs) are toxic and recognized as one of the major contributors to air pollution.
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Affiliation(s)
- Haibao Huang
- School of Environmental Science and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Ying Xu
- School of Environmental Science and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Qiuyu Feng
- School of Environmental Science and Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Dennis Y. C. Leung
- Department of Mechanical Engineering
- The University of Hong Kong
- Hong Kong
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41
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Das P, Ray S, Bhaumik A, Banerjee B, Mukhopadhyay C. Cubic Ag2O nanoparticle incorporated mesoporous silica with large bottle-neck like mesopores for the aerobic oxidative synthesis of disulfide. RSC Adv 2015. [DOI: 10.1039/c4ra14802a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ag2O nanoparticle supported on silica with large bottle-neck like mesopores for the aerobic oxidative synthesis of disulphides in water.
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Affiliation(s)
- Paramita Das
- Department of Chemistry
- University of Calcutta
- Kolkata-700009
- India
| | - Suman Ray
- Department of Chemistry
- University of Calcutta
- Kolkata-700009
- India
| | - Asim Bhaumik
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Biplab Banerjee
- Department of Materials Science
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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42
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Formaldehyde catalytic oxidation over hydroxyapatite modified with various organic molecules. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60129-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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43
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Rui Z, Chen L, Chen H, Ji H. Strong Metal-Support Interaction in Pt/TiO2 Induced by Mild HCHO and NaBH4 Solution Reduction and Its Effect on Catalytic Toluene Combustion. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5029107] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Zebao Rui
- Department of Chemical Engineering, School of Chemistry & Chemical Engineering, and The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou, 510275 Guangdong, P. R. China
| | - Lingye Chen
- Department of Chemical Engineering, School of Chemistry & Chemical Engineering, and The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou, 510275 Guangdong, P. R. China
| | - Huayao Chen
- Department of Chemical Engineering, School of Chemistry & Chemical Engineering, and The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou, 510275 Guangdong, P. R. China
| | - Hongbing Ji
- Department of Chemical Engineering, School of Chemistry & Chemical Engineering, and The Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou, 510275 Guangdong, P. R. China
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44
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Bai B, Li J. Positive Effects of K+ Ions on Three-Dimensional Mesoporous Ag/Co3O4 Catalyst for HCHO Oxidation. ACS Catal 2014. [DOI: 10.1021/cs5006663] [Citation(s) in RCA: 278] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Bingyang Bai
- State
Key Joint Laboratory of Environment Simulation and Pollution Control,
School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State
Key Joint Laboratory of Environment Simulation and Pollution Control,
School of Environment, Tsinghua University, Beijing 100084, China
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China
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45
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Yu H, Zhu Y, Yang H, Nakanishi K, Kanamori K, Guo X. Facile preparation of silver nanoparticles homogeneously immobilized in hierarchically monolithic silica using ethylene glycol as reductant. Dalton Trans 2014; 43:12648-56. [DOI: 10.1039/c4dt00655k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Zhang C, Li Y, Wang Y, He H. Sodium-promoted Pd/TiO2 for catalytic oxidation of formaldehyde at ambient temperature. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:5816-5822. [PMID: 24738832 DOI: 10.1021/es4056627] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Catalytic oxidation of formaldehyde (HCHO) to CO2 at ambient conditions is of great interest for indoor HCHO purification. Here, we report that sodium-doped Pd/TiO2 is a highly effective catalyst for the catalytic oxidation of HCHO at room temperature. It was observed that Na doping has a dramatic promotion effect on the Pd/TiO2 catalyst and that nearly 100% HCHO conversion could be achieved over the 2Na-Pd/TiO2 catalyst at a GHSV of 95000 h(-1) and HCHO inlet concentration of 140 ppm at 25 °C. The mechanism of the Na-promotion effect was investigated by using Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), CO chemisorption, Temperature-programmed reduction by H2 (H2-TPR), X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption of O2 (O2-TPD) methods. The results showed that Na species addition can induce and further stabilize a negatively charged and well-dispersed Pd species, which then facilitates the activation of H2O and chemisorbed oxygen, therefore resulting in the high performance of the 2Na-Pd/TiO2 catalyst for the ambient HCHO destruction.
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Affiliation(s)
- Changbin Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
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47
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Guo W, Luo Z, Lv H, Hill CL. Aerobic Oxidation of Formaldehyde Catalyzed by Polyvanadotungstates. ACS Catal 2014. [DOI: 10.1021/cs5000763] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weiwei Guo
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Zhen Luo
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Hongjin Lv
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Craig L. Hill
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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48
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Catalytic activity of Ag/SBA-15 for low-temperature gas-phase selective oxidation of benzyl alcohol to benzaldehyde. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(12)60720-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Quiroz Torres J, Royer S, Bellat JP, Giraudon JM, Lamonier JF. Formaldehyde: catalytic oxidation as a promising soft way of elimination. CHEMSUSCHEM 2013; 6:578-592. [PMID: 23456881 DOI: 10.1002/cssc.201200809] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Indexed: 06/01/2023]
Abstract
Compared to other molecules such as benzene, toluene, xylene, and chlorinated compounds, the catalytic oxidation of formaldehyde has been studied rarely. However, standards for the emission level of this pollutant will become more restrictive because of its extreme toxicity even at very low concentrations in air. As a consequence, the development of a highly efficient process for its selective elimination is needed. Complete catalytic oxidation of formaldehyde into CO2 and H2 O using noble-metal-based catalysts is a promising method to convert this pollutant at room temperature, making this process energetically attractive from an industrial point of view. However, the development of a less expensive active phase is required for a large-scale industrial development. Nanomaterials based on oxides of manganese are described as the most promising catalysts. The objective of this Minireview is to present promising recent studies on the removal of formaldehyde through heterogeneous catalysis to stimulate future research in this topic.
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Affiliation(s)
- Jhon Quiroz Torres
- Université de Lille1, Unité de Catalyse et Chimie du Solide, UMR CNRS 8181, 59652 Villeneuve d'Ascq, France
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50
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Zhang X, Qu Z, Yu F, Wang Y. High-temperature diffusion induced high activity of SBA-15 supported Ag particles for low temperature CO oxidation at room temperature. J Catal 2013. [DOI: 10.1016/j.jcat.2012.10.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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