1
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Cheng Q, Wei H, Wang J, Wang ZQ, Gong XQ, Wang D. Clarifying the Direct Generation of •OH Radicals in Photocatalytic O 2 Reduction: Theoretical Prediction Combined with Experimental Validation. J Phys Chem Lett 2024; 15:8650-8659. [PMID: 39151150 DOI: 10.1021/acs.jpclett.4c01779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2024]
Abstract
This work systematically studied thermocatalytic and photocatalytic pathways of formaldehyde degradation and H-assisted O2 reduction over a Pt13/anatase-TiO2(101) composite via DFT calculations together with constrained molecular dynamics (MD) simulations. We show that photocatalytic O2 reduction on Pt/TiO2 can directly generate •OH radicals (*O2 → *OOH → •OH) via two hydrogenation steps with small barriers, and the product selectivity (*H2O2 or •OH) is decided by the relative position between catalyst Fermi level and •OH/*H2O2 redox potential (theoretical determination of 0.07 V referencing to the SHE). Such a novel reaction channel was furthermore validated at the liquid-solid interface via constrained MD simulations and experimental electron paramagnetic resonance detections, and a wide range of H resources, e.g., *HCHO, *HCO, *H (H+ + e-), can always drive the direct •OH generation. The additional portion of e--triggered •OH radicals are prone to diffuse into solution or the TiO2 surface and furthermore cooperate with the conventional h+-driven photooxidations.
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Affiliation(s)
- Qian Cheng
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Hehe Wei
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jinling Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhi-Qiang Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xue-Qing Gong
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Dong Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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2
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Li D, Liu H, He X, Yao Y, Liu H, Chen J, Deng B, Lan X. Sepiolite-Supported Manganese Oxide as an Efficient Catalyst for Formaldehyde Oxidation: Performance and Mechanism. Molecules 2024; 29:2826. [PMID: 38930891 PMCID: PMC11207037 DOI: 10.3390/molecules29122826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 06/06/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
The current study involved the preparation of a number of MnOx/Sep catalysts using the impregnation (MnOx/Sep-I), hydrothermal (MnOx/Sep-H), and precipitation (MnOx/Sep-P) methods. The MnOx/Sep catalysts that were produced were examined for their ability to catalytically oxidize formaldehyde (HCHO). Through the use of several technologies, including N2 adsorption-desorption, XRD, FTIR, TEM, H2-TPR, O2-TPD, CO2-TPD, and XPS, the function of MnOx in HCHO elimination was examined. The MnOx/Sep-H combination was shown to have superior catalytic activities, outstanding cycle stability, and long-term activity. It was also able to perform complete HCHO conversion at 85 °C with a high GHSV of 6000 mL/(g·h) and 50% humidity. Large specific surface area and pore size, a widely dispersed active component, a high percentage of Mn3+ species, and lattice oxygen concentration all suggested a potential reaction route for HCHO oxidation. This research produced a low-cost, highly effective catalyst for HCHO purification in indoor or industrial air environments.
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Affiliation(s)
| | | | | | | | | | | | | | - Xiaobing Lan
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application, School of Chemistry and Environmental Science, Xiangnan University, Chenzhou 423000, China; (D.L.); (H.L.); (X.H.); (Y.Y.); (H.L.); (J.C.); (B.D.)
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3
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Zheng Z, Zhang C, Li J, Fang D, Tan P, Fang Q, Chen G. Density functional theory-based screening of Ti 4C 3O 2-loaded single atoms for efficient selective catalytic oxidation of formaldehyde. CHEMOSPHERE 2024; 356:142024. [PMID: 38614396 DOI: 10.1016/j.chemosphere.2024.142024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/25/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
Indoor formaldehyde (HCHO) pollution poses a major risk to human health. Low-temperature catalytic oxidation is an effective method for HCHO removal. The high activity and selectivity of single atomic catalysts provide a possibility for the development of efficient non-precious metal catalysts. In this study, the most stable single-atom catalyst Ti-Ti4C3O2 was screened by density functional theory among many single atomic catalysts with two-dimensional (2D) monolayer Ti4C3O2 as the support. The computational results show that Ti-Ti4C3O2 is highly selective to HCHO and O2 in complex environments. The HCHO oxidation reaction pathways are proposed based on the Eley-Rideal (E-R) and Langmuir-Hinshelwood (L-H) mechanisms. According to the reaction energy and energy span models, the E-R mechanism has a lower maximum energy barrier and higher catalytic efficiency than the L-H mechanism. In addition, the stability of the Ti-Ti4C3O2 structure and active center was verified by diffusion energy barrier and ab initio molecular dynamics simulations. The above results indicate that Ti-Ti4C3O2 is a promising non-precious metal catalyst. The present study provides detailed theoretical insights into the catalytic oxidation of HCHO by Ti-Ti4C3O2, as well as an idea for the development of efficient non-precious metal catalysts based on 2D materials.
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Affiliation(s)
- Zhao Zheng
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
| | - Cheng Zhang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China.
| | - Junchen Li
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
| | - Dingli Fang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
| | - Peng Tan
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
| | - Qingyan Fang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
| | - Gang Chen
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China
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Habibi B, Pashazadeh A, Pashazadeh S, Saghatforoush LA. A new method for the preparation of MgAl layered double hydroxide-copper metal-organic frameworks structures: application to electrocatalytic oxidation of formaldehyde. Sci Rep 2024; 14:5222. [PMID: 38433243 PMCID: PMC10909854 DOI: 10.1038/s41598-024-55770-7] [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: 10/13/2023] [Accepted: 02/27/2024] [Indexed: 03/05/2024] Open
Abstract
In this research, we present a novel design protocol for the in-situ synthesis of MgAl layered double hydroxide-copper metal-organic frameworks (LDH-MOFs) nanocomposite based on the electrocoagulation process and chemical method. The overall goal in this project is the primary synthesis of para-phthalic acid (PTA) intercalated MgAl-LDH with Cu (II) ions to produce the paddle-wheel like Cu-(PTA) MOFs nanocrystals on/in the MgAl-LDH structure. The physicochemical properties of final product; Cu-(PTA) MOFs/MgAl-LDH, were characterized by the surface analysis and chemical identification methods (SEM, EDX, TEM, XRD, BET, FTIR, CHN, DLS, etc.). The Cu-(PTA) MOFs/MgAl-LDH nanocomposite was used to modification of the carbon paste electrode (CPE); Cu-(PTA) MOFs/MgAl-LDH/CPE. The electrochemical performance of Cu-(PTA) MOFs/MgAl-LDH/CPE was demonstrated through the utilization of electrochemical methods. The results show a stable redox behavior of the Cu (III)/Cu (II) at the surface of Cu-(PTA) MOFs/MgAl-LDH/CPE in alkaline medium (aqueous 0.1 M NaOH electrolyte). Then, the Cu-(PTA) MOFs/MgAl-LDH/CPE was used as a new electrocatalyst toward the oxidation of formaldehyde (FA). Electrochemical data show that the Cu-(PTA) MOFs/MgAl-LDH/CPE exhibits superior electrocatalytic performance on the oxidation of FA. Also the diffusion coefficient, exchange current density (J°) and mean value of catalytic rate constant (Kcat) were found to be 1.18 × 10-6 cm2 s-1, 23 mA cm-2 and 0.4537 × 104 cm3 mol-1 s-1, respectively. In general, it can be said the Cu-(PTA) MOFs/MgAl-LDHs is promising candidate for applications in direct formaldehyde fuel cells.
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Affiliation(s)
- Biuck Habibi
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, 53714-161, Iran
| | - Ali Pashazadeh
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, 53714-161, Iran.
| | - Sara Pashazadeh
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, 53714-161, Iran
| | - Lotf Ali Saghatforoush
- Department of Chemistry, Payame Noor University, Tehran, 19395-4697, Islamic Republic of Iran
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Li Z, Li Y, Li S, Ma J, Ma Q, Wang Z, Wang J, Long K, Liu X. Enhanced and Sustainable Removal of Indoor Formaldehyde by Naturally Porous Bamboo Activated Carbon Supported with MnO x: Synergistic Effect of Adsorption and Oxidation. Molecules 2024; 29:663. [PMID: 38338407 PMCID: PMC10856013 DOI: 10.3390/molecules29030663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Novel bamboo activated carbon (BAC) catalysts decorated with manganese oxides (MnOx) were prepared with varying MnOx contents through a facile one-step redox reaction. Due to the physical anchoring effect of the natural macropore structure for catalyst active components, homogeneous MnOx nanoparticles (NPs), and high specific surface area over catalyst surface, the BAC@MnOx-N (N = 1, 2, 3, 4, 5) catalyst shows encouraging adsorption and catalytic oxidation for indoor formaldehyde (HCHO) removal at room temperature. Dynamic adsorption and catalytic activity experiments were conducted. The higher Smicro (733 m2/g) and Vmicro/Vt (82.6%) of the BAC@MnOx-4 catalyst could facilitate its excellent saturated and breakthrough adsorption capacity (5.24 ± 0.42 mg/g, 2.43 ± 0.22 mg/g). The best performer against 2 ppm HCHO is BAC@MnOx-4 catalyst, exhibiting a maximum HCHO removal efficiency of 97% for 17 h without any deactivation as RH = 0, which is higher than those of other MnOx-based catalysts. The average oxidation state and in situ DRIFTS analysis reveal that abundant oxygen vacancies on the BAC@MnOx-4 catalyst could be identified as surface-active sites of decomposing HCHO into the intermediate species (dioxymethylene and formate). This study provides a potential approach to deposit MnOx nanoparticles onto the BAC surface, and this hybrid BAC@MnOx material is promising for indoor HCHO removal at room temperature.
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Affiliation(s)
- Zhenrui Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Yujun Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Shijie Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Jianfeng Ma
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Qianli Ma
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Zhihui Wang
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Jiajun Wang
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Keying Long
- Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning 530002, China;
| | - Xing’e Liu
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
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6
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Shan R, Sheng Z, Hu S, Xiao H, Zhang Y, Zhang J, Wang L, Zhang C, Li J. Enhancing oxidation reaction over Pt-MnO 2 catalyst by activation of surface oxygen. J Environ Sci (China) 2023; 134:117-125. [PMID: 37673527 DOI: 10.1016/j.jes.2023.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/24/2022] [Accepted: 01/05/2023] [Indexed: 09/08/2023]
Abstract
Formaldehyde (HCHO) and carbon monoxide (CO) are both common air pollutants and hazardous to human body. It is imperative to develop the catalyst that is able to efficiently remove these pollutants. In this work, we activated Pt-MnO2 under different conditions for highly active oxidation of HCHO and CO, and the catalyst activated under CO displayed superior performance. A suite of complementary characterizations revealed that the catalyst activated with CO created the highly dispersed Pt nanoparticles to maintain a more positively charged state of Pt, which appropriately weakens the Mn-O bonding strength in the adjacent region of Pt for efficient supply of active oxygen during the reaction. Compared with other catalysts activated under different conditions, the CO-activated Pt-MnO2 displays much higher activity for oxidation of HCHO and CO. This research contributes to elucidating the mechanism for regulating the oxidation activity of Pt-based catalyst.
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Affiliation(s)
- Ruoting Shan
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhenteng Sheng
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Shuo Hu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hongfei Xiao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yuhua Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - 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.
| | - Li Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, 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
| | - Jinlin Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China.
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7
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Di Z, Zhang R, Guo X, Shen H, Li Y, Jia J, Wei Y. Principle on Selecting the Coordination Ligands of Palladium Precursors Encapsulated by Zeolite for an Efficient Purification of Formaldehyde at Ambient Temperature. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16641-16652. [PMID: 37734047 DOI: 10.1021/acs.est.3c05190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
High-performance zeolite-supported noble metal catalysts with low loading and high dispersion of active components are the most promising materials for achieving the complete oxidation of formaldehyde (HCHO) at room temperature. In this work, palladium nanoparticles (Pd NPs) with different sizes were successfully encapsulated inside the silicalite-1 (S-1) zeolite framework by using diverse stabling ligands via the one-pot method. Thereafter, the rule on selecting the coordinative ligands for palladium was clarified: more N atoms, a short carbon chain, a smaller branch chain, and bidentate coordination are characteristics of an ideal ligand. Accordingly, the best-performing 0.2Pd@S-1(Ethylenediamine) catalyst exhibited outstanding performance for HCHO oxidation, achieving 100% conversion even at room temperature. High-resolution high-angle annular dark-field scanning transmission electron microscopy (HR HAADF-STEM) and density functional theory (DFT) calculations indicate that the chelate is formed by complexation of Pd2+ ions with ethylenediamine, displaying the smallest spatial site resistance simultaneously with the zeolite synthesis, resulting in Pd located mostly within the 5-membered ring (5-MR) channels of S-1 after calcination, thus limiting the growth of Pd clusters and promoting their dispersion.
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Affiliation(s)
- Zhaoying Di
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Runduo Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaonan Guo
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hanxiao Shen
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yaping Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jingbo Jia
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ying Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
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8
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Liu R, Liang M, Xu J, Sun Y, Long L, Zhu L, Lv B, Yang B, Ni Y. Preparation of a Novel Formaldehyde-Free Impregnated Decorative Paper Containing MnO 2 Nanoparticles for Highly Efficient Formaldehyde Removal. ACS APPLIED MATERIALS & INTERFACES 2023; 15:34941-34955. [PMID: 37462122 DOI: 10.1021/acsami.3c05791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The loading of catalytic manganese dioxide (MnO2) nanoparticles onto an impregnated decorative paper has been an effective method for the removal of indoor formaldehyde (HCHO) pollutants. However, its preparation can present numerous challenges, including instability in dipping emulsions and leaching. In this investigation, a novel and stable formaldehyde-free polyacrylate dipping emulsion containing MnO2 particles was prepared and then back-coated on a decorative paper. To improve the dispersion and fixation, the MnO2 was modified with silane. HCHO can undergo physical adsorption on the cellulosic fibers present in the paper, while it can also undergo chemical degradation into CO2 within the MnO2 groups. The silane not only enhanced the interfacial adhesion to a polyacrylate resin but also increased the interlayer distance, thereby creating a larger space for HCHO absorption. The impregnated decorative paper back-coated with 10 wt % of silane-modified MnO2 exhibited a removal efficiency of approximately 90% for HCHO at 20 °C. The removal rate further improved to approximately 100% when the temperature was increased to 60 °C. Moreover, it is worth noting that the release of volatile organic compounds was exceptionally minimal. Additionally, the particleboard bonded with this impregnated decorative paper exhibited an extremely low emission of HCHO, with a value that approached 0 mg·L-1. Furthermore, the bonding strength of the surface remained unaffected. Therefore, this study provides a simple and eco-friendly method for effectively removing HCHO, which can enhance indoor air quality.
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Affiliation(s)
- Ru Liu
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Min Liang
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Jianfeng Xu
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Yuhui Sun
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Ling Long
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Liming Zhu
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Bin Lv
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Bohan Yang
- Research Institute of Wood Industry, Chinese Academy of Forestry Haidian, 100091 Beijing, China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton NBE3B5A3, Canada
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9
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Yang Z, Qin G, Tang R, Jia L, Wang F, Liu T. Formaldehyde Oxidation of Ce 0.8Zr 0.2O 2 Nanocatalysts for Room Temperature: Kinetics and Effect of pH Value. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2074. [PMID: 37513085 PMCID: PMC10384232 DOI: 10.3390/nano13142074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023]
Abstract
Ce0.8Zr0.2O2 catalysts were prepared via the co-precipitation method under different pH conditions. The catalysts were characterized via TEM, XRD, XPS, BET, Raman, and FTIR. The oxidation performance of formaldehyde was tested. Precipitation pH affects the physicochemical properties and performance of the Ce0.8Zr0.2O2 catalyst. By controlling the precipitation pH at 10.5, the Ce0.8Zr0.2O2 catalyst with the largest specific surface area, the smallest grain size with the best formaldehyde removal rate (98.85%), abundant oxygen vacancies, and the best oxidation performance were obtained. Meanwhile, the kinetic parameters of the catalyst were experimentally investigated and the calculated activation energy was 12.6 kJ/mol and the number of reaction steps was 1.4 and 1.2.
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Affiliation(s)
- Zonglin Yang
- College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China
| | - Gaoyuan Qin
- China Energy Engineering Group Yunnan Electric Power Design Institute Co., Ltd., Kunming 650051, China
| | - Ruijiu Tang
- College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China
| | - Lijuan Jia
- College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China
| | - Fang Wang
- College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China
| | - Tiancheng Liu
- College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China
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10
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Liu X, Liu Y, Wu Y, Dong S, Qi G, Chen C, Xi S, Luo P, Dai Y, Han Y, Zhou Y, Guo Y, Wang J. Room temperature removal of high-space-velocity formaldehyde boosted by fixing Pt nanoparticles into Beta zeolite framework. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131848. [PMID: 37336111 DOI: 10.1016/j.jhazmat.2023.131848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/29/2023] [Accepted: 06/12/2023] [Indexed: 06/21/2023]
Abstract
Catalytic oxidation of volatile organic compounds like formaldehyde (HCHO) over the noble metals catalysts at room temperature is among the most promising strategies to control indoor pollution but remains one challenge to maximize the efficiency of noble metal species. Herein, we demonstrated the straightforward encapsulation of highly dispersive Pt nanoparticles (NPs) within BEA zeolite and adjacent with the surface hydroxyl groups to reach the synergistic HCHO oxidation at 25 °C. High efficiency and long-term stability was reached under large space velocity (∼100% conversion at 180,000 mL (gcat × h)-1 and >95% at 360,000 mL (gcat × h)-1), affording rapid elimination rate of 129.4 μmol (gPt × s)-1 and large turnover frequency of 2.5 × 10-2 s-1. This is the first synergy example derived from the hydroxyl groups and confined noble metals within zeolites that accelerated the rate-determining step, the formate transformation, in the HCHO elimination.
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Affiliation(s)
- Xiaoling Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yitong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yue Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shan Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Guoqin Qi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Cailing Chen
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Shibo Xi
- Institute of Sustainability for Chemicals, Energy and Environment, A⁎STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Pan Luo
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yihu Dai
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yu Han
- Advanced Membranes and Porous Materials Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yu Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Yu Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Jun Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.
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11
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Liu X, Wang C, Chen Y, Qin Q, Li Y, He H. Formaldehyde oxidation on Pd/USY catalysts at room temperature: The effect of acid pretreatment on supports. J Environ Sci (China) 2023; 125:811-822. [PMID: 36375962 DOI: 10.1016/j.jes.2022.02.025] [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: 11/13/2021] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 06/16/2023]
Abstract
The complete catalytic oxidation of formaldehyde (HCHO) to CO2 and H2O at room temperature is a green route for indoor HCHO removal. Zeolite is an excellent carrier material for HCHO oxidation due to its large surface area, intricate pores and high adsorption capacity. However, the zeolite-supported noble metal catalysts have currently shown relatively low activity especially at room temperature. In this work, we present a facile acid treatment strategy for zeolite catalysts to improve the hydroxyl concentration and further enhance their catalytic activity for HCHO oxidation. Activity tests illustrated that HCHO could be completely oxidized to CO2 and H2O at a nearly 100% conversion rate with a weight hourly space velocity (WHSV) of 150,000 mL/(g∙hr) at 25°C, when the support of Pd/USY catalysts was pretreated by hydrochloric acid with a concentration of 0.20 mol/L. The characterization results revealed that the active hydroxyl groups originated from the dealumination in the acid treatment play a key role in the HCHO oxidation reaction. The deduced reaction mechanism suggests that bridging hydroxyl groups may oxidize HCHO to dioxymethylene (DOM) species and terminal hydroxyl groups are responsible for the transformation of DOM groups to formate (HCOO) species.
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Affiliation(s)
- Xiaofeng Liu
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunying Wang
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Chinese Academy of Sciences, Ningbo Urban Environment Observation and Research Station-NUEORS, Ningbo 315800, China
| | - Yumin Chen
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China.
| | - Qi Qin
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China
| | - Yaobin Li
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Chinese Academy of Sciences, Ningbo Urban Environment Observation and Research Station-NUEORS, Ningbo 315800, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China.
| | - Hong He
- Center for Excellence in Regional Atmospheric Environment, Key Laboratory of Urban Pollutant Conversion, Chinese Academy of Sciences, Institute of Urban Environment, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Chinese Academy of Sciences, Ningbo Urban Environment Observation and Research Station-NUEORS, Ningbo 315800, China; 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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12
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Qin L, Huang S, Cheng H. Catalytic performance and mechanism of bismuth molybdate nanosheets decorated with platinum nanoparticles for formaldehyde decomposition at room temperature. J Colloid Interface Sci 2023; 633:453-467. [PMID: 36462268 DOI: 10.1016/j.jcis.2022.11.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 11/26/2022]
Abstract
Catalytic oxidation at room temperature is considered as a promising strategy for removal of formaldehyde (HCHO), a widely occurring indoor air pollutant. A series of Bi2MoO6 nanosheets were prepared via one-step hydrothermal synthesis in this study, followed by decoration with Pt nanoparticles (NPs). The catalyst with Bi2MoO6 support prepared at 180 °C exhibited high and stable activity in catalytic oxidation of HCHO at room temperature. The excellent catalytic performance was attributed to its large specific area and pore volume, high level of surface active oxygen species, high content of metallic Pt NPs, and abundant oxygen vacancies. The good synergy and interaction between Pt and Bi2MoO6 promoted electron transfer, and facilitated the adsorption and oxidation of HCHO. The electronic interaction between Pt NPs and Bi2MoO6 accelerated the activation of oxygen species due to weakening of the surface BiO or MoO bonds adjacent to Pt NPs. Infrared spectra indicated that dioxymethylene and formate species were the main intermediates of HCHO oxidation. Density functional theory calculations showed that the dehydrogenation of HCO2, with an energy barrier of 282.1 kJ/mol, was the rate-determining step in catalytic oxidation process. This study provides new insights on the construction of high-efficiency catalysts for indoor formaldehyde removal.
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Affiliation(s)
- Lifan Qin
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Shengnan Huang
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Hefa Cheng
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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13
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Delen G, Monai M, Stančiaková K, Baumgartner B, Meirer F, Weckhuysen BM. Structure sensitivity in gas sorption and conversion on metal-organic frameworks. Nat Commun 2023; 14:129. [PMID: 36624095 PMCID: PMC9829675 DOI: 10.1038/s41467-022-35762-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/22/2022] [Indexed: 01/11/2023] Open
Abstract
Many catalytic processes depend on the sorption and conversion of gaseous molecules on the surface of (porous) functional materials. These events often preferentially occur on specific, undercoordinated, external surface sites. Here we show the combination of in situ Photo-induced Force Microscopy (PiFM) with Density Functional Theory (DFT) calculations to study the site-specific sorption and conversion of formaldehyde on the external surfaces of well-defined faceted ZIF-8 microcrystals with nanoscale resolution. We observed preferential adsorption of formaldehyde on high index planes. Moreover, in situ PiFM allowed us to visualize unsaturated nanodomains within extended external crystal planes, showing enhanced sorption behavior on the nanoscale. Additionally, on defective ZIF-8 crystals, structure sensitive conversion of formaldehyde through a methoxy- and a formate mechanism mediated by Lewis acidity was found. Strikingly, sorption and conversion were influenced more by the external surface termination than by the concentration of defects. DFT calculations showed that this is due to the presence of specific atomic arrangements on high-index crystal surfaces. With this research, we showcase the high potential of in situ PiFM for structure sensitivity studies on porous functional materials.
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Affiliation(s)
- Guusje Delen
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | - Matteo Monai
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | - Katarina Stančiaková
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | - Bettina Baumgartner
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | - Florian Meirer
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
| | - Bert M. Weckhuysen
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, The Netherlands
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14
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Shi L, Zhou X, Guo Y, Li Y, Yan C, Han Q, Zhang L, Zhang W. Designing of 3D MnO 2-graphene catalyst on sponge for abatement temperature removal of formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129836. [PMID: 36088878 DOI: 10.1016/j.jhazmat.2022.129836] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/14/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The Mn-based catalysts, with low cost and high activity, are believed to be the effective composites for eliminating in-door formaldehyde (HCHO), while the powdered form nanosized catalysts are hardly to apply for practical application. Herein, hetero-structure of nanosheets manganese oxide (MnO2) encapsulating N-doping graphene sphere (GS) were deposited in network-like sponge for constructing 3D catalyst. The prepared MnO2-GS-Sponge composite catalyst exhibited excellent performance for removing HCHO at room temperature compared with GS and commercial MnO2. The MnO2-GS with larger specific surface area (209.1 m2·g-1) was dispersed evenly in 3D network of sponge, which facilitated exposing more activate sites and achieving fast transport kinetics accelerating catalytic reaction for converting 97.1 % of 100 ppm of HCHO continuously to CO2 for 120 h. Moreover, rely on the chemisorption of amino groups on N-doping GS surface, HCHO could be enriched even at low concentrations and efficient elimination (from 1000 ppb to12 ppb, at 35 ℃ in 48 h). The average oxidation state and infrared spectra analysis suggested that abundant oxygen vacancies on MnO2-GS-Sponge could be identified as surface-active sites of converting HCHO into the intermediates of dioxymethylene and formate. This work might inspire the designing 3D composite material for potential application in other fields of environmental engineering or energy industrial.
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Affiliation(s)
- Lei Shi
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China; Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Centre, Institute of Applied Chemistry, East China University of Science and Technology, No.130 Meilong Road, Shanghai 200237, PR China
| | - Xudong Zhou
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Yujie Guo
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Yunyu Li
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Chenxu Yan
- Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Centre, Institute of Applied Chemistry, East China University of Science and Technology, No.130 Meilong Road, Shanghai 200237, PR China
| | - Qifeng Han
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Lingfan Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
| | - Wenqing Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
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15
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An G, Zhu J, Huang Q, Gu M, Sun Y, Xu L, Tao T, Yang B, Chen M, Yang H. Synergistic effect of photo-thermal oxidation for a low concentration of HCHO over Bi 3+-TiO 2/MnFeO x catalysts at ambient temperature. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:10191-10201. [PMID: 36070042 DOI: 10.1007/s11356-022-22835-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Formaldehyde (HCHO) has been one of the important air pollutants, and the effective removal of HCHO at ambient temperature has been a big challenge. In this work, the synergistic effect of photo-thermal oxidation with Bi3+-TiO2/MnFeOx for a low concentration of HCHO was investigated. MnFeOx was synthesized by the complexation method (CM) and co-precipitation (CP), and TiO2 with Bi3+ doping supported on MnFeOx was prepared by using the hydrothermal method to obtain a higher oxidation performance. The results demonstrated an excellent oxidation activity of MnFeOx (CM) for HCHO at ambient temperature, attributed to the morphology effect (large surface areas and small crystal sizes), the large absorption of oxygen, and the interaction and oxygen vacancy formed between MnO2 and FeOx. Although Bi3+-TiO2/MnFeOx showed a similar result as MnFeOx at 48 h, the oxidation activities for HCHO were improved prominently under photo-thermal oxidation at 12 h. The improvement was ascribed to the synergistic effect of Bi3+-TiO2 and MnFeOx with surface adsorbed oxygen, and more generated reactive oxygen species on the surface. In particular, 2 wt% Bi3+-TiO2/MnFeOx displayed the highest activity (90.2%) and good stability (5 cycles), and the HCHO average conversion was increased from 46.2 to 58.2% at 12 h. The feasible oxidation mechanism and reaction pathway were also interpreted. This work provides a new insight for the development of photocatalysts supported on transition metal oxides to oxidize HCHO at ambient temperature.
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Affiliation(s)
- 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, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Jie Zhu
- 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, No. 219 Ningliu Road, 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, No. 219 Ningliu Road, Nanjing, 210044, China.
| | - Mingyang Gu
- 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, No. 219 Ningliu Road, 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, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Lirui Xu
- 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, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Tao Tao
- 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, No. 219 Ningliu Road, 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, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Mindong Chen
- 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, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Hong Yang
- Department of Geography and Environmental Science, University of Reading, Whiteknights, Reading, RG6 6AB, UK
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16
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Zhang J, Shan R, Xiao H, Hu S, Sheng Z, Qin X, Zhang Y, Wang L, Li J, Zhang C. Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO 2-Based Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17331-17340. [PMID: 36354790 DOI: 10.1021/acs.est.2c07099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
While utilization of transitional metals as a promoter has been extensively studied to enhance the activity of Pt-based catalysts for the oxidation of formaldehyde (HCHO), there is still a lack of well elucidated property-function relationship for the rational selection of a promoter in catalyst design. Herein, we modified a Pt/CeO2 catalyst with two transitional metal dopants (i.e., Mn and Cu) that showed negligible influence on the physical structure of the Pt-CeO2 matrix but distinct effects on the activity of the catalyst. Complementary characterizations combined with density functional theory modeling revealed that the transitional metal dopants significantly modified the electronic structure of the catalyst and shifted the d-band of Pt to higher energy with different extents, which may tune the bonding strength of HCHO/intermediates with the Pt-CeO2 interface domain. The catalyst with moderate bonding strength (i.e., Pt-Mn/CeO2) displayed the highest reactivity under the ambient condition, while Pt-Cu/CeO2 with the highest bonding strength showed a dramatically decreased activity. No correlation was observed between the abundancy of the active oxygen and catalytic activity, likely due to the oxygen supply having a much higher rate than the rate-determining step. This work contributes to the elucidation about the property-function relationship of a transitional metal dopant in Pt-based catalysts for the oxidation of HCHO.
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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
| | - Ruoting Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Hongfei Xiao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shuo Hu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhenteng Sheng
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Xiaoxiao Qin
- 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
| | - Yuhua Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Li Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Jinlin Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, 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
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17
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Jang Y, Lee YH, Eom H, Lee SM, Kim SS. Effect of preparation method of noble metal supported catalyts on formaldehyde oxidation at room temperature: Gas or liquid phase reduction. J Environ Sci (China) 2022; 122:201-216. [PMID: 35717085 DOI: 10.1016/j.jes.2022.01.027] [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: 06/11/2021] [Revised: 01/12/2022] [Accepted: 01/17/2022] [Indexed: 06/15/2023]
Abstract
Formaldehyde (HCHO) is toxic to the human body and is one of the main threats to the indoor air quality (IAQ). As such, the removal of HCHO is imperative to improving the IAQ, whereby the most useful method to effectively remove HCHO at room temperature is catalytic oxidation. This review discusses catalysts for HCHO room-temperature oxidation, which are categorized according to their preparation methods, i.e., gas-phase reduction and liquid-phase reduction methods. The HCHO oxidation performances, structural features, and reaction mechanisms of the different catalysts are discussed, and directions for future research on catalytic oxidation are reviewed.
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Affiliation(s)
- Younghee Jang
- Department of Environmental Energy Envineering, Graduate School of kyonggi University, Gyeonggi-do 16227, Korea
| | - Ye Hwan Lee
- Department of Environmental Energy Envineering, Graduate School of kyonggi University, Gyeonggi-do 16227, Korea
| | - Hanki Eom
- Department of Environmental Energy Engineeing, Kyonggi University, Gyonggi-do 16227, Korea
| | - Sang Moon Lee
- Department of Environmental Energy Engineeing, Kyonggi University, Gyonggi-do 16227, Korea
| | - Sung Su Kim
- Department of Environmental Energy Engineeing, Kyonggi University, Gyonggi-do 16227, Korea.
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18
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Lee M, Yim H, Kim B, Kim S, Choi W, Kim W, Kim HI. Harnessing Waste Heat from Indoor lamps for Sustainable Thermocatalytic Mineralization of Acetaldehyde using Platinized TiO 2. CHEMOSPHERE 2022; 308:136350. [PMID: 36096302 DOI: 10.1016/j.chemosphere.2022.136350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
This study demonstrates the first reported thermocatalytic oxidation of an indoor volatile organic compound (VOC), acetaldehyde, by harnessing the waste-heat energy from indoor light sources (e.g., halogen lamps) without additional energy inputs. With an optimal Pt-TiO2 catalyst, the designed catalyst-coated lampshade was successfully activated under waste-heat energy (∼120 °C) and achieved the complete mineralization of CH3CHO into CO2 (k = 0.02 min-1). The catalytic activity of Pt-TiO2 was extremely dependent on its preparation method which greatly influenced the characteristics (e.g., oxidation state and size) of Pt. The thermocatalytic oxidation mechanism of CH3CHO over Pt-TiO2 was investigated, which revealed that O2 and H2O sources play vital roles. Although Pt is an expensive noble metal, the thermocatalytic process on the Pt-TiO2-coated lampshade without additional energy, along with its outstanding activity, can offset the high material cost. The proposed strategy offers a sustainable and feasible method for the degradation of indoor VOCs.
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Affiliation(s)
- Minhyung Lee
- Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Heewon Yim
- Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea; Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, 77843-3136, USA
| | - Bupmo Kim
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Suho Kim
- Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Wonyong Choi
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Republic of Korea
| | - Wooyul Kim
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Republic of Korea.
| | - Hyoung-Il Kim
- Department of Civil & Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
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19
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Li D, Chen X, Huang Y, Zhang G, Zhou D, Xiao B. Selective catalytic oxidation of formaldehyde on single V- and Cr-atom decorated magnetic C 4N 3 substrate: A first principles study. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129608. [PMID: 35872455 DOI: 10.1016/j.jhazmat.2022.129608] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/04/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Formaldehyde (HCHO) is the most common indoor hazardous pollutant and has attracted great concern because its long-term exposure has adverse health effects on humans. Retention and catalytic oxidation of highly hazardous HCHO is an efficient and environmentally friendly method to use for air remediation, but a major obstacle to this procedure is the lack of an appropriate catalyst. Herein, two-dimensional magnetic C4N3 material with a 3d-transition metal as activate sites was systemically investigated in HCHO oxidation using density functional theory calculations. The results show that V-C4N3 and Cr-C4N3 have high structural stability and shallow activation barriers for O2 decomposition; these characteristics provide the necessary precursors for the subsequent oxidation reaction. Moreover, the V-C4N3 and Cr-C4N3 catalysts have unique selective adsorption and catalysis toward HCHO in a mixture of some typical in-door volatile organic compounds (VOCs) and air. The corresponding dynamic barrier for each reaction step was investigated and the mechanism involved in HCHO oxidation was revealed in detail. Aggregation of metal atoms in the V-C4N3 and Cr-C4N3 catalysts is prevented by enormous diffusion resistance, and this is further confirmed by AIMD simulations. These results provide insightful guidance for developing advanced magnetic catalysts for HCHO oxidation to improve the remediation of air contaminants.
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Affiliation(s)
- Deqiao Li
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Xianfei Chen
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China.
| | - Yi Huang
- College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China.
| | - Guanru Zhang
- College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China
| | - Dan Zhou
- College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, China
| | - Beibei Xiao
- School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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20
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Liu Y, Guo L. Adsorption mechanisms of different toxic molecular gases on intrinsic C 2N and Ti-C 2N -V monolayer: a DFT study. J Mol Model 2022; 28:289. [PMID: 36057016 DOI: 10.1007/s00894-022-05273-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/12/2022] [Indexed: 10/14/2022]
Abstract
Recently, the excessive emission of chemical toxic gases such as nitrogen trifluoride (NF3), ammonia (NH3), phosgene (COCL2), and benzene (C6H6) has caused serious environmental problems. Adsorption of these chemical toxic gas molecules is a promising method to reduce environmental pollution. In this work, density functional theory (DFT) calculations are used to investigate the adsorption properties of these chemical toxic molecules on intrinsic C2N and Ti-C2N-V monolayer. The results show that NF3, NH3, C6H6, and COCL2 can all be adsorbed to the intrinsic C2N monolayer with weak adsorption energy, while the adsorption properties of these gas molecules were greatly improved after doping Ti atom. The adsorption energy of NH3, C6H6, COCL2, and NF3 increased from - 0.585, - 0.432, - 0.633, and - 0.362 eV to - 2.214, - 1.699, - 1.822, and - 0.799 eV, respectively, which increased by 2 ~ 4 times compared with that before doping. Besides, the results of the electron distribution, work function, the total density of states (TDOS), and the partial density of states (PDOS) analysis indicate that the doped Ti atom can be used as a bridge to connect the adsorbed molecules with the C2N-V monolayer, strengthen their interaction, and significantly improve the adsorption capacity. Therefore, Ti-doped C2N-V (Ti-C2N-V) monolayer is a promising adsorbent for the enrichment and utilization of harmful gases.
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Affiliation(s)
- Yan Liu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Lifen Guo
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, Sichuan, China. .,School of Electronic and Information, Zhongyuan University of Technology, Zhengzhou, 450007, Henan, China.
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21
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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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22
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Yan Z, Huang G, Wang G, Xiang M, Han X, Xu Z. Fluorescent lamp promoted formaldehyde removal over CeO2 catalysts at ambient temperature. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.06.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Unraveling the Reaction Mechanism of HCHO Catalytic Oxidation on Pristine Co3O4 (110) Surface: A Theoretical Study. Catalysts 2022. [DOI: 10.3390/catal12050560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Various reaction mechanisms for the catalytic degradation of formaldehyde (HCHO) remain to be debated. Density functional theory (DFT) was applied to investigate whether the catalytic oxidation of HCHO on pristine Co3O4 (110) surface follows the Mars-van Krevelen (MvK) mechanism or the Langmuir–Hinshelwood (L-H) mechanism. Firstly, HCHO and O2 co-adsorb on the surface and two H atoms from HCHO are peculiarly prone to transfer to O2, forming CO and HOOH. For the MvK mechanism, CO2 is generated through CO grabbing a lattice oxygen. Meanwhile, the O–O bond of HOOH is broken into two OH groups. One OH fills the oxygen vacancy and its H atom moves to another OH group for H2O formation. For the L-H mechanism, CO directly obtains one OH group to generate COOH. Subsequently, the H atom of COOH transfers to another OH group along with CO2 and H2O generation. Both two mechanisms exhibit a similar maximum activation barrier. The lattice oxygen in the MvK mechanism and the surface-absorbed OH group in the L-H mechanism are the key reactive oxygen species. The small difference in energetic span further suggests that the catalytic cycle through the two mechanisms is feasible. This theoretical study provides new insight into the catalytic reaction path of HCHO oxidation on pristine Co3O4 surface.
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24
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Manganese Oxide Minerals from the Xiangtan Manganese Deposit in South China and Their Application in Formaldehyde Removal. MINERALS 2022. [DOI: 10.3390/min12050552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Because of the nano-scale tunnel constructed by the active Mn-O octahedron in cryptomelane, cryptomelane-type manganese oxides have high activity in the oxidation of several volatile organic compounds (VOCs). Natural cryptomelane, in the form of supergene oxide manganese ore, carpets much of South China. In the lower part of the Datangpo Formation of Nanhua System on the southeastern Yangtze Platform, cryptomelane is one of the major manganese oxides in black shale of the Xiangtan manganese deposit in this deposit. Formaldehyde is a dominant indoor pollutant among volatile organic compounds (VOCs), and applications of synthetic cryptomelane have been reported to eliminate it. To study the removal capacity of naturally outcropping cryptomelane, representative samples of manganese oxide (the primary mineral component of cryptomelane) from the Xiangtan Mn deposit were analyzed in this study. The chemical composition, crystal structure and micromorphology of the manganese oxide minerals were explored using ICP-AES, XRD, EPMA, SEM and HR-TEM techniques. Fine-grained and poorly crystalline, these minerals consist primarily of cryptomelane, along with minor amounts of pyrolusite, hollandite, lithiophorite, limonite and quartz. Natural cryptomelane is a monoclinic crystal, and its cell parameters are refined. The results of catalytic tests revealed that natural cryptomelane has obvious catalytic activity in the oxidation of formaldehyde in a static environment under room temperature. This study may provide a natural mineral material as an inexpensive and efficient catalyst for the purification of formaldehyde in industrial or indoor air treatment.
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25
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Low-Temperature Oxidation Removal of Formaldehyde Catalyzed by Mn-Containing Mixed-Oxide-Supported Bismuth Oxychloride in Air. Catalysts 2022. [DOI: 10.3390/catal12030262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The Mn-containing mixed-oxide-supported bismuth oxychloride (BiOCl) catalysts were prepared by calcining their corresponding parent hydrotalcite supported BiOCl. The crystal structure of BiOCl was found to be intact during calcination, while significant differences appeared in the chemical state of Mn and the redox capacities of the catalysts before and after calcination. Compared to the hydrotalcite-supported catalysts, the mixed-oxide-supported BiOCl showed much higher catalytic performance in the oxidation removal of formaldehyde due to the synergetic catalysis of more surface oxygen vacancies and higher surface basicity. The complete removal of formaldehyde could be achieved at 70 °C, and the removal efficiency was maintained more than 90% for 21 h. A possible reaction mechanism was also proposed.
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26
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Zhu D, Chen M, Huang Y, Li R, Huang T, Cao JJ, Shen Z, Lee SC. FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127593. [PMID: 34736177 DOI: 10.1016/j.jhazmat.2021.127593] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/10/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Formaldehyde is a typical indoor air pollutant that has posed severely adverse effects on human health. Herein, a novel FeCo alloy nanoparticle-embedded nitrogen-doped carbon (FeCo@NC) was synthesized with the aim of tailoring the transition-metal d-band structure toward an improved formaldehyde oxidation activity for the first time. A unique core@shell metal-organic frameworks (MOFs) architecture with a Fe-based Prussian blue analogue core and Co-containing zeolite imidazole framework shell was firstly fabricated. Then, Fe and Co ion alloying was readily achieved owing to the inherent MOF porosity and interionic nonequilibrium diffusion occurring during pyrolysis. High-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure spectra confirm that small FeCo alloys in situ form in FeCo@NC, which exhibits a higher formaldehyde removal efficiency (93%) than the monometallic Fe-based catalyst and a remarkable CO2 selectivity (85%) at room temperature. Density functional theory calculations indicate the number of electrons transferred from the metal core to the outer carbon layer is altered by alloying Fe and Co. More importantly, a downshift in the d-band center relative to the Fermi level occurs from - 0.93 to - 1.04 eV after introducing Co, which could alleviate the adsorption of reaction intermediates and greatly improve the catalytic performance.
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Affiliation(s)
- Dandan Zhu
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Meijuan Chen
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yu Huang
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China.
| | - Rong Li
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Tingting Huang
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Jun-Ji Cao
- Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China
| | - Zhenxing Shen
- Department of Environmental Sciences and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
| | - Shun Cheng Lee
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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27
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Dong J, Li Q, Xia W, Lv B, Jing G, Shen H, Yuan CS. Improvement of water resistance by Fe 2O 3/TiO 2 photoelectrocatalysts for formaldehyde removal: experimental and theoretical investigation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:13805-13821. [PMID: 34599445 DOI: 10.1007/s11356-021-16459-w] [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: 01/15/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
TiO2-based photocatalysts are a potential technology for removing indoor formaldehyde (CHOH) owing to their strong photooxidation ability. However, their photooxidation performance is generally weakened when suffering from the competitive adsorption of H2O. In a method inspired by the oxygen evolution reaction (OER) to generate intermediates with hydroxyl radicals on the anode electrode catalysts, an electric field was employed in this research and applied to the photooxidation of CHOH to prevent the competitive adsorption of H2O. Additionally, 0.5-5% Fe2O3 decorated TiO2 was employed to improve the photoelectrocatalytic activity. The influence of an electric field on hydroxyl-radical production was investigated by both density functional theory (DFT) with direct-imposed dipole momentum and photoelectrocatalytic experimental tests. The surface characterization of the photocatalysts, including transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR), was conducted. DFT results show that a positive electric field with a strength of 0.05 Å/V was more favorable to produce hydroxyl on Fe2O3/TiO2(010) than was a negative electric field. Fe2O3 decoration can significantly boost hydroxyl formation, resulting from a decrease in the binding energy between the Fe of Fe2O3 and the oxygen and hydrogen atoms of H2O. The dissociated hydrogen atom of the H2O preferentially remained on the catalysts' surface rather than being released into the gas flow. The experimental results demonstrated that applying 150 V could not directly enhance the photooxidation of CHOH by either TiO2 or Fe2O3/TiO2 but that it could relieve the H2O inhibitory effect by more than 10% on the Fe2O3/TiO2.
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Affiliation(s)
- Jing Dong
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Qing Li
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Wenjie Xia
- Department of Civil and Environmental Engineering, North Dakota State University, Fargo, ND, USA
| | - Bihong Lv
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Guohua Jing
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Huazhen Shen
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China.
| | - Chung-Shin Yuan
- Institute of Environmental Engineering, National Sun Yat-sen University, No. 70, Lian-Hai Road, Kaohsiung, 804, Taiwan
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28
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Xin S, Zhu S, Zheng J, Nie L. One-step fabrication of electrospun flexible and hierarchically porous Pt/γ-Al 2O 3 nanofiber membranes for HCHO and particulate removal. NEW J CHEM 2022. [DOI: 10.1039/d2nj03080b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible Pt/γ-Al2O3 nanofiber membrane with optimal 2 wt% Pt content can effectively decompose HCHO into CO2 at room temperature.
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Affiliation(s)
- Sitian Xin
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Silong Zhu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Jianfei Zheng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Longhui Nie
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
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29
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Li K, Ji J, Gan Y, Huang H. Regulation of mixed Ag valence state by non-thermal plasma for complete oxidation of formaldehyde. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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30
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Kumar A, Choudhary P, Kumar A, Camargo PHC, Krishnan V. Recent Advances in Plasmonic Photocatalysis Based on TiO 2 and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2101638. [PMID: 34396695 DOI: 10.1002/smll.202101638] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/06/2021] [Indexed: 05/24/2023]
Abstract
Plasmonic photocatalysis has emerged as a prominent and growing field. It enables the efficient use of sunlight as an abundant and renewable energy source to drive a myriad of chemical reactions. For instance, plasmonic photocatalysis in materials comprising TiO2 and plasmonic nanoparticles (NPs) enables effective charge carrier separation and the tuning of optical response to longer wavelength regions (visible and near infrared). In fact, TiO2 -based materials and plasmonic effects are at the forefront of heterogeneous photocatalysis, having applications in energy conversion, production of liquid fuels, wastewater treatment, nitrogen fixation, and organic synthesis. This review aims to comprehensively summarize the fundamentals and to provide the guidelines for future work in the field of TiO2 -based plasmonic photocatalysis comprising the above-mentioned applications. The concepts and state-of-the-art description of important parameters including the formation of Schottky junctions, hot electron generation and transfer, near field electromagnetic enhancement, plasmon resonance energy transfer, scattering, and photothermal heating effects have been covered in this review. Synthetic approaches and the effect of various physicochemical parameters in plasmon-mediated TiO2 -based materials on performances are discussed. It is envisioned that this review may inspire and provide insights into the rational development of the next generation of TiO2 -based plasmonic photocatalysts with target performances and enhanced selectivities.
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Affiliation(s)
- Ajay Kumar
- School of Basic Sciences and Adv. Mater. Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175075, India
| | - Priyanka Choudhary
- School of Basic Sciences and Adv. Mater. Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175075, India
| | - Ashish Kumar
- School of Basic Sciences and Adv. Mater. Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175075, India
| | - Pedro H C Camargo
- University of Helsinki, Department of Chemistry, A.I. Virtasen aukio 1, Helsinki, Finland
| | - Venkata Krishnan
- School of Basic Sciences and Adv. Mater. Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, 175075, India
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31
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Efficient removal of formaldehyde by diatomite decorated with BiOCl/TiO2 under visible-light irradiation: Effects of key preparation parameters. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.09.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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32
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Ling J, Dong Y, Cao P, Wang Y, Li Y. Preparation of Mn-Fe Oxide by a Hydrolysis-Driven Redox Method and Its Application in Formaldehyde Oxidation. ACS OMEGA 2021; 6:23274-23280. [PMID: 34549127 PMCID: PMC8444290 DOI: 10.1021/acsomega.1c02994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Homogeneous distribution of Mn-Fe oxides (xMn1Fe) with different Mn/Fe ratios was synthesized by a hydrolysis-driven redox method, and their catalytic activities in HCHO oxidation were investigated. The results showed that HCHO conversion was significantly improved after doping iron due to the synergistic effect between manganese and iron. The 5Mn1Fe catalyst exhibits excellent catalytic activity, achieving >90% HCHO conversion at 80 °C and nearly 100% conversion at 100 °C. The physicochemical properties of catalysts were characterized by BET, XRD, H2-TPR, O2-TPD, and XPS techniques. Experimental results revealed that the introduction of Fe into MnO x resulted in a large surface area, a high ratio of Mn4+, abundant lattice oxygen species and oxygen vacancy, and uniform distribution of Mn and Fe, thus facilitating the oxidation of HCHO to CO2 and H2O.
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Affiliation(s)
- Jie Ling
- College
of Coal and Chemical Industry, Shaanxi Energy
Institute, Hsienyang 712000, China
| | - Yaxin Dong
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - Pan Cao
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - Yixiang Wang
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - YingYing Li
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
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33
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Chen M, Qiu Y, Wang W, Li X, Wang J, Wen H, Yang Z, Wang P. Engineering oxygen vacancies via amorphization in conjunction with W-doping as an approach to boosting catalytic properties of Pt/Fe-W-O for formaldehyde oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126224. [PMID: 34492978 DOI: 10.1016/j.jhazmat.2021.126224] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/07/2021] [Accepted: 05/23/2021] [Indexed: 06/13/2023]
Abstract
Engineering functional defects in support materials has gained ever-increasing attention as a novel approach to boosting the catalytic performance of oxide-supported catalysts. Herein, we demonstrate the feasibility of engineering oxygen vacancy in iron oxide through amorphization in conjunction with foreign cation doping and elucidate the important role of support functionality in the catalytic oxidation of formaldehyde (HCHO). A supported Pt catalyst on Fe-W-O amorphous nanosheets (denoted as Pt/a-Fe-W-O) was synthesized using a one-step solvothermal method. This simple method allowed us to simultaneously create abundant oxygen vacancies in the substrate and to ensure uniform dispersion of tiny Pt nanoparticles with an average diameter of 1.4 nm on the high-surface-area substrate. This renders an increased possibility of Pt/O-vacancy coexistence in close proximity, which synergistically boosts the formation of active oxygen and surface hydroxyl species. Consequently, the Pt/a-Fe-W-O catalyst with an optimal W/Fe molar ratio of 0.08:1 and a 1.51 wt% Pt loading exhibited a high specific reaction rate of 68.3 μmol gPt-1 s-1 and excellent stability during 24 h continuous test, outperforming most existing HCHO oxidation catalysts. Our study highlights the importance of functional oxygen defects in construction of synergistic active sites for promoting the reactions requiring multiple active species.
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Affiliation(s)
- Muhua Chen
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Yuping Qiu
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Weizhen Wang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Xinyan Li
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Jiajun Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - He Wen
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Zhiqing Yang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Ping Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China.
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34
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Chen J, Tang H, Huang M, Yan Y, Zhang J, Liu H, Zhang J, Wang G, Wang R. Surface Lattice Oxygen Activation by Nitrogen-Doped Manganese Dioxide as an Effective and Longevous Catalyst for Indoor HCHO Decomposition. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26960-26970. [PMID: 34077203 DOI: 10.1021/acsami.1c04369] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Oxygen vacancy plays an important role in catalytic oxidation of formaldehyde (HCHO), but the inherent drawback of its thermodynamic instability causes the deactivation of catalysts. Hence, improving the thermodynamic stability of oxygen vacancy is a crux during HCHO oxidation. Here, a novel and simple nitrogen doping of MnO2/C catalyst is designed for HCHO oxidation at room temperature. The surface lattice oxygen of MnO2 will be activated by nitrogen-doping, which acts as active sites for HCHO oxidation and solves the thermodynamic instability issue of oxygen vacancy. Furthermore, carbon is doped with nitrogen to promote electron transfer and accelerate the HCHO oxidation process. Therefore, the catalytic activity and stability of the catalyst can be significantly promoted, which can completely remove ∼1 ppm HCHO in the tank within 3 h, and remains highly active after 5 cycles at room temperature (RH = 55%). In addition, the excellent removal performance over the prepared catalyst is also attributed to abundant surface oxygen species, amorphous crystallinity, and low reduction temperature. In situ diffuse reflectance infrared Fourier transform spectrometry (DRIFTS) and density functional theory (DFT) calculations reveal the reaction mechanism of HCHO. This strategy provides crucial enlightenment for designing novel Mn-based catalysts for application in the HCHO oxidation field.
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Affiliation(s)
- Jinwei Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610065, China
| | - Haiyan Tang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Meng Huang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yong Yan
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Jin Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Honggang Liu
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Jie Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Gang Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610065, China
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35
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Qi Q, Zhang W, Zhang Y, Bai G, Wang S, Liang P. Formaldehyde oxidation at room temperature over layered MnO2. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106293] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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36
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Li T, Zhang Z, Liu L, Gao M, Han Z. A stable metal-organic framework nanofibrous membrane as photocatalyst for simultaneous removal of methyl orange and formaldehyde from aqueous solution. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126359] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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37
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The Catalytic Oxidation of Formaldehyde by FeOx-MnO2-CeO2 Catalyst: Effect of Iron Modification. Catalysts 2021. [DOI: 10.3390/catal11050555] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A series of FeOx-MnO2-CeO2 catalysts were synthesized by the surfactant-templated coprecipitation method and applied for HCHO removal. The influence of Fe/Mn/Ce molar ratio on the catalytic performance was investigated, and the FeOx-MnO2-CeO2 catalyst exhibited excellent catalytic activity, with complete HCHO conversion at low temperatures (40 °C) when the molar ratio of Fe/Mn/Ce was 2/5/5. The catalysts were characterized by N2 adsorption and desorption, XRD, H2-TPR, O2-TPD and XPS techniques to illustrate their structure–activity relationships. The result revealed that the introduction of FeOx into MnO2-CeO2 formed a strong interaction between FeOx-MnO2-CeO2, which facilitated the improved dispersion of MnO2-CeO2, subsequently increasing the surface area and aiding pore development. This promotion effect of Fe enhanced the reducibility and produced abundant surface-active oxygen. In addition, a great number of Oα is beneficial to the intermediate decomposition, whereas the existence of Ce3+ favors the formation of oxygen vacancies on the surface of the catalyst, all of which contributed to HCHO oxidation at low temperatures.
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38
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He M, Cao Y, Ji J, Li K, Huang H. Superior catalytic performance of Pd-loaded oxygen-vacancy-rich TiO2 for formaldehyde oxidation at room temperature. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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39
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Liang Y, Li J, He Y, Jiang Z, Shangguan W. Catalytic oxidation of dimethyl phthalate over titania-supported noble metal catalysts. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123274. [PMID: 32763674 DOI: 10.1016/j.jhazmat.2020.123274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/07/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Semi-volatile organic compounds (SVOCs) are organic compounds with the boiling point ranging between 240/260 ℃ and 380/400 ℃. Detailed knowledge regarding catalytic removal of SVOCs from indoor environment is very limited as it remains challenge to explore such reaction due to the viscosity nature of target contaminants. Here, we established a facile methodology to explore the heterogeneous catalytic oxidation reaction of dimethyl phthalate (DMP), a model SVOC, over the surface of supported catalyst. DMP was found to be gradually oxidized over the surface of titania supported catalysts including palladium (Pd), platinum and ruthenium with increasing temperature. The cleavage of side chain of DMP occurs at 75 ℃ over the surface of Pd/TiO2, which is significantly lower than that of the other two catalysts. Carbon dioxide was observed as the main product of the catalytic oxidation reaction. However, aromatic products and small molecule products were still observed as side-product in different temperature range. Density functional theory calculations further show that DMP can react with reactive oxygen species to form phthalic acid. While the cleavage of the DMP side chain occurs to form products such as methyl benzoate. This work thus provides basic knowledge about indoor SVOCs catalytic oxidation removal.
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Affiliation(s)
- Yuting Liang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiayi Li
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yaoyu He
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhi Jiang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wenfeng Shangguan
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
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40
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Jitwatanasirikul T, Roongcharoen T, Chitpakdee C, Jungsuttiwong S, Poldorn P, Takahashi K, Namuangruk S. Co-embedded sulfur vacant MoS 2 monolayer as a promising catalyst for formaldehyde oxidation: a theoretical evaluation. NEW J CHEM 2021. [DOI: 10.1039/d1nj02869c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we theoretically evaluated the complete catalytic oxidation of formaldehyde (HCHO) catalyzed by a cobalt embedded sulfur vacant MoS2 (COSv–MoS2) monolayer.
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Affiliation(s)
- Thanadol Jitwatanasirikul
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Warinchamrap, Ubon Ratchathani, 34190, Thailand
| | - Thantip Roongcharoen
- National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani 12120, Thailand
| | - Chirawat Chitpakdee
- National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani 12120, Thailand
| | - Siriporn Jungsuttiwong
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Warinchamrap, Ubon Ratchathani, 34190, Thailand
| | - Preeyaporn Poldorn
- Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Warinchamrap, Ubon Ratchathani, 34190, Thailand
| | - Kaito Takahashi
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Supawadee Namuangruk
- National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani 12120, Thailand
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41
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Li L, Wang L, Zhao X, Wei T, Wang H, Li X, Gu X, Yan N, Li L, Xiao H. Excellent Low-Temperature Formaldehyde Decomposition Performance over Pt Nanoparticles Directly Loaded on Cellulose Triacetate. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04568] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Long Li
- Innovation Research Center of Lignocellulosic Functional Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Lei Wang
- Innovation Research Center of Lignocellulosic Functional Materials, 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
| | - Tongtong Wei
- Innovation Research Center of Lignocellulosic Functional Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Haibo Wang
- College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Xiaobao Li
- Innovation Research Center of Lignocellulosic Functional Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Xiaoli Gu
- Innovation Research Center of Lignocellulosic Functional Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Ning Yan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto M5S 3E5, Canada
| | - Licheng Li
- Innovation Research Center of Lignocellulosic Functional Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton E3B 5A3, New Brunswick, Canada
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42
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Xu J, Xiao X, Zhang Z, Wu Y, Boyle DT, Lee HK, Huang W, Li Y, Wang H, Li J, Zhu Y, Chen B, Mitch W, Cui Y. Designing a Nanoscale Three-phase Electrochemical Pathway to Promote Pt-catalyzed Formaldehyde Oxidation. NANO LETTERS 2020; 20:8719-8724. [PMID: 33201720 DOI: 10.1021/acs.nanolett.0c03560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gas-phase heterogeneous catalysis is a process spatially constrained on the two-dimensional surface of a solid catalyst. Here, we introduce a new toolkit to open up the third dimension. We discovered that the activity of a solid catalyst can be dramatically promoted by covering its surface with a nanoscale-thin layer of liquid electrolyte while maintaining efficient delivery of gas reactants, a strategy we call three-phase catalysis. Introducing the liquid electrolyte converts the original surface catalytic reaction into an electrochemical pathway with mass transfer facilitated by free ions in a three-dimensional space. We chose the oxidation of formaldehyde as a model reaction and observed a 25000-times enhancement in the turnover frequency of Pt in three-phase catalysis as compared to conventional heterogeneous catalysis. We envision three-phase catalysis as a new dimension for catalyst design and anticipate its applications in more chemical reactions from pollution control to the petrochemical industry.
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Affiliation(s)
- Jinwei Xu
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Xin Xiao
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Zewen Zhang
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Yecun Wu
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - David T Boyle
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Hiang Kwee Lee
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Wenxiao Huang
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Yuzhang Li
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Hansen Wang
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Jun Li
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Yangying Zhu
- Department of Mechanical Engineering, University of California, Santa Barbara, California 93106, United States
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - William Mitch
- Department of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States
| | - Yi Cui
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
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43
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Abstract
An aqueous impregnation method using manganese (II) nitrate precursor, followed by calcination at 400 °C, was carried out for the preparation of manganese doped hydroxyapatite catalysts (MnxHap; x = Mn wt.%: 2.5, 5.0, 10, 20, and 30 based on MnO2). Methods of characterization including inductively coupled plasma spectroscopy (ICP), N2 physisorption, X-ray Diffraction (XRD), Fourier-Transform Transmission Infrared (FT-IR), Raman, and Thermal gravimetric analysis (TGA/MS) analysis were used for the identification of Mn species and its surrounding environment. Raman spectroscopy indicated the presence of the ε-MnO2 phase for Mn20Hap and Mn30Hap in agreement with the XRD results and the presence of β-MnOOH species for Mn5Hap and Mn10Hap. The formaldehyde total oxidation was investigated on these catalysts and it was shown that Mn5Hap was the most active catalyst, achieving a normalized rate of formaldehyde (HCHO) conversion into CO2 per mole of Mn of 0.042 h−1 at a temperature of 145 °C. The well dispersed oxidized manganese species on Hap with a medium Mn AOS (average oxidation state) were mainly responsible for this performance. Since HCHO was retained on the surface of all catalysts during the catalytic test, the combined Diffuse Reflectance Infrared Fourier Transform spectroscopy (DRIFT) experiment at room temperature and thermodesorption (TD)-FTIR identified formate species as their oxidation consumed surface OH groups. A stability test and moisture effect study showed that the presence of water vapor has a beneficial effect on the performances of the catalyst.
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44
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Plasma-Catalysis for Volatile Organic Compounds Decomposition: Complexity of the Reaction Pathways during Acetaldehyde Removal. Catalysts 2020. [DOI: 10.3390/catal10101146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Acetaldehyde removal was carried out using non-thermal plasma (NTP) at 150 J·L−1, and plasma-driven catalysis (PDC) using Ag/TiO2/SiO2, at three different input energies—70, 350 and 1150 J·L−1. For the experimental configuration used, the PDC process showed better results in acetaldehyde (CH3CHO) degradation. At the exit of the reactor, for both processes and for all the used energies, the same intermediates in CH3CHO decomposition were identified, except for acetone which was only produced in the PDC process. In order to contribute to a better understanding of the synergistic effect between the plasma and the catalyst, acetaldehyde/catalyst surface interactions were studied by diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS). These measurements showed that different species such as acetate, formate, methoxy, ethoxy and formaldehyde are present on the surface, once it has been in contact with the plasma. A reaction pathway for CH3CHO degradation is proposed taking into account all the identified compounds in both the gas phase and the catalyst surface. It is very likely that in CH3CHO degradation the presence of methanol, one of the intermediates, combined with oxygen activation by silver atoms on the surface, are key elements in the performance of the PDC process.
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45
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Cui W, Liu L, Yang J, Tan N. Effect of preparation method on the catalytic performance of formaldehyde oxidation over octahedral Fe 3O 4 microcrystals supported Pt catalysts. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2019.1637752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Weiyi Cui
- Key Laboratory of Chemical Cleaner Production Technology of Jilin Province, Jilin Institute of Chemical Technology, Jilin, China
| | - Ling Liu
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin, China
| | - Jiajun Yang
- Institute of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin, China
| | - Naidi Tan
- Key Laboratory of Chemical Cleaner Production Technology of Jilin Province, Jilin Institute of Chemical Technology, Jilin, China
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46
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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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47
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Wang N, Xu Z, Luo T, Yan Z, Jin M, Shi L. Pt Anchored on Mn(Co)CO
3
/MnCo
2
O
4
Heterostructure for Complete Oxidation of Formaldehyde at Room Temperature. ChemistrySelect 2020. [DOI: 10.1002/slct.202002870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nenghuan Wang
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Zhihua Xu
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
- School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan 430081 China
| | - Tingting Luo
- Materials Analysis Center Wuhan University of Technology Wuhan 430070 China
| | - Zhaoxiong Yan
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Mei Jin
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
| | - Ling Shi
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education Jianghan University Wuhan 430056 China
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48
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Zhang S, Wang H, Si H, Jia X, Wang Z, Li Q, Kong J, Zhang J. Novel Core-Shell (ε-MnO 2/CeO 2)@CeO 2 Composite Catalyst with a Synergistic Effect for Efficient Formaldehyde Oxidation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40285-40295. [PMID: 32805822 DOI: 10.1021/acsami.0c09263] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel core-shell (ε-MnO2/CeO2)@CeO2 composite catalyst with a synergistic effect was prepared by hydrothermal reaction and thermal decomposition and its application to high-efficiency oxidation removal of formaldehyde (HCHO) was systemically investigated. The (MnCO3/CeO2)@CeO2 precursor was prepared first by the one-pot hydrothermal reaction of Mn2+ and Ce3+ solutions with a CO2-storage material (CO2SM) without any external templates or surfactants required. The thermal decomposition of the precursor afforded the core-shell (ε-MnO2/CeO2)@CeO2 composite catalyst with excellent catalytic performance. HCHO in the feed gas (180 ppm HCHO, 21% O2, N2 balanced) at a gas hourly space velocity of 100 L/(gcat h) is 100% converted over the catalyst at 80 °C. The conversion rate remains above 95% in 72 h and above 73.8% in 140 h, suggesting the strong stability of the catalyst at high gas flow rates and relatively low temperatures. The synergistic mechanism of the catalyst was explored by X-ray diffraction, Raman, Brunauer-Emmett-Teller, transmission electron microscopy, and X-ray photoelectron spectroscopy. The number of defects in the catalyst and the strength of the Mn-O bond in ε-MnO2 can be tuned by adjusting the synthesis conditions. More oxygen vacancies on the surface of CeO2 can make the synergistic effect of the catalyst stronger, which significantly improves the lattice oxygen (Olatt) activity on the surface of ε-MnO2. Our work has provided new insights into the preparation of the desired composite catalysts with excellent performances.
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Affiliation(s)
- Shuai Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
| | - Haozhe Wang
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Huayan Si
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization, Hohhot 010051, China
| | - Xiaoqian Jia
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization, Hohhot 010051, China
| | - Ziyan Wang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
| | - Qiang Li
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization, Hohhot 010051, China
| | - Jing Kong
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jianbin Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Inner Mongolia Engineering Research Center for CO2 Capture and Utilization, Hohhot 010051, China
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49
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Chen M, Yin H, Li X, Qiu Y, Cao G, Wang J, Yang X, Wang P. Facet- and defect-engineered Pt/Fe 2O 3 nanocomposite catalyst for catalytic oxidation of airborne formaldehyde under ambient conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122628. [PMID: 32305715 DOI: 10.1016/j.jhazmat.2020.122628] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/13/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Formaldehyde (HCHO) is one of the most infamous indoor pollutants that imposes a great threat to human health. Herein, we report the development of a high-performance Pt/Fe2O3 catalyst for HCHO oxidation employing a facet- and defect-engineering strategy, with special focus on the surface structure effect of α-Fe2O3 on the catalytic properties. A supported Pt nanocatalyst on hollow octadecahedral α-Fe2O3 with exclusively exposed {113} and {104} facets was prepared using a hydrothermal method followed by impregnation-reduction treatment. The high-index facets of α-Fe2O3 render the formation of abundant oxygen vacancies and an improved dispersion of Pt nanoparticles. This led to an increased Pt/O-vacancy coexistence in close proximity, which collaboratively promote the generation of active oxygen and surface OH species. As a consequence, the Pt/Fe2O3-HO catalyst exhibited impressively high and stable activity towards HCHO oxidation at room temperature, which was five-fold higher than that of the supported Pt catalyst on commercial α-Fe2O3.
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Affiliation(s)
- Muhua Chen
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Hui Yin
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Xiaoyin Li
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Yuping Qiu
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Guoxuan Cao
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Jiajun Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Xianfeng Yang
- Analytical and Testing Centre, South China University of Technology, Guangzhou 510641, PR China
| | - Ping Wang
- School of Materials Science and Engineering, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China.
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50
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Eom H, Hwang IH, Lee DY, Lee SM, Kim SS. Preparation of Liquid-Phase Reduction Method-Based Pt/TiO 2 Catalyst and Reaction Characteristics during HCHO Room-Temperature Oxidation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02059] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hanki Eom
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - In-hyuck Hwang
- Department of Environmental Energy Engineering, Graduate School, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Dong Yoon Lee
- Department of Environmental Energy Engineering, Graduate School, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Sang Moon Lee
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Sung Su Kim
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
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