1
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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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2
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Zhu GS, Zheng JY, Bao Han C, Zhang H, Chang P, Kang Zhao W, He J, Xia Y, Song X, Yan H. Amino groups modified MnO
x
‐PUF applied in indoor air purification: removing formaldehyde at room temperature. ChemistrySelect 2023. [DOI: 10.1002/slct.202204060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Guang Shuo Zhu
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Jia Yu Zheng
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Chang Bao Han
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Hao Zhang
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Peiyu Chang
- Beijing University of traditional Chinese medicine No. 11, Beisanhuan East Road, Chaoyang District Beijing 100029
| | - Wen Kang Zhao
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Junda He
- Key laboratory of Beijing on Regional Air Pollution Control Beijing University of Technology Beijing 100124 People's Republic of China
| | - Yi Xia
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Xuemei Song
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
| | - Hui Yan
- The Key Laboratory of Advanced Functional Materials Ministry of Education of China Faculty of Materials and Manufacturing Beijing University of Technology Beijing 100124 People's Republic of China
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3
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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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4
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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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5
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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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6
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Liu J, Chen W, He T, Fang Y, Zhong Z, Wang X, Li Z, Song Y. Lewis base sites of non-oxide supports boost oxygen absorption and activation over supported Pt catalysts. RSC Adv 2022; 12:12537-12543. [PMID: 35480376 PMCID: PMC9040154 DOI: 10.1039/d2ra00538g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/11/2022] [Indexed: 11/28/2022] Open
Abstract
Formaldehyde (HCHO) oxidation to improve indoor air quality has attracted extensive attention. Designing efficient catalysts for HCHO removal at room temperature still remains challenging. Herein, we report a novel strategy to boost HCHO oxidation by the synergistic effect of Pt nanoparticles and C3N4. The pyridine nitrogen of C3N4 can create Lewis base sites, which function in adsorbing and activating O2 molecules. As the preparation temperature increased, the pyridine nitrogen content increased on the C3N4 surface, leading to a more significant synergistic effect. The mechanism study by in situ DRIFTS indicated that the adsorbed O2 molecules were activated by Pt/C3N4. As a result, the Pt/C3N4-650 has the most outstanding performance for HCHO oxidation at room temperature. HCHO can be completely eliminated with a concentration of 80 ppm at room temperature at a GHSV of 50 000 ml g-1 h-1. This study will provide a new perspective to design efficient HCHO oxidation catalysts.
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Affiliation(s)
- Jianye Liu
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - Wenbin Chen
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - Taihe He
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - Yiwen Fang
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - ZiYi Zhong
- Department of Chemistry Engineering, Guangdong Technion-Israel Institute of Technology (GTIIT) Guangdong 515063 China
- Technion-Israel Institute of Technology (IIT) Haifa 32000 Israel
| | - Xiaoming Wang
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - Zhen Li
- Department of Chemistry, Shantou University Guangdong 515063 China
| | - Yibing Song
- Department of Chemistry, Shantou University Guangdong 515063 China
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7
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Design of S-scheme 3D nickel molybdate/AgBr nanocomposites: Tuning of the electronic band structure towards efficient interfacial photoinduced charge separation and remarkable photocatalytic activity. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113751] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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8
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Keerthana S, Rani BJ, Yuvakkumar R, Ravi G, Saravanakumar B, Pannipara M, Al-Sehemi AG, Velauthapillai D. NiMoO 4 nanorods photocatalytic activity comparison under UV and visible light. ENVIRONMENTAL RESEARCH 2021; 197:111073. [PMID: 33774013 DOI: 10.1016/j.envres.2021.111073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/04/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Waste water remediation is the ongoing hot research topic that can reduce the water scarcity all over the world. By reducing the pollutants in the waste water drawn from industries and other sources will be more useful for domestic purposes. To reduce the rate of pollutants in water may also help in improving the aquatic environment and decreases other side effects. Efficient and cost effective catalysts were in search for both dye degradation and water remediation treatment applications. NiMoO4 nanorods were prepared by employing co-precipitation method with different stirrer time (2 h, 4 h and 6 h). The formation of NiMoO4 was substantiated employing X-ray diffractometer analysis (XRD). Vibrational and rotational property of the samples was analyzed by FT-IR spectra and Raman spectra. The optical property was further confirmed by UV-vis spectral studies. Morphological analysis studies revealed growth of nanorods with 6 h stirrer time. The photocatalytic behavior of the obtained product was carried out under both UV light (364 nm) and visible light irradiation. The samples subjected to visible light environment showed better efficiency on degrading the methylene blue (MB) dye. The efficiency obtained under UV irradiation were 20%, 31%, 33%, 41% and efficiency obtained in visible light irradiation were 27%, 42%, 46%, 55% with respect to bare methylene blue (MB), MB with NiMoO4 (2 h), MB with NiMoO4 (4 h), MB with NiMoO4 (6 h) catalyst added. NiMoO4 sample with 6 h stirrer time and fine nanorods growth will be the good candidate for future use.
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Affiliation(s)
| | | | - Rathinam Yuvakkumar
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | - Ganesan Ravi
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | | | | | | | - Dhayalan Velauthapillai
- Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, 5063, Norway.
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9
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Vakylabad AB. Treatment of highly concentrated formaldehyde effluent using adsorption and ultrasonic dissociation on mesoporous copper iodide (CuI) nano-powder. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 285:112085. [PMID: 33581458 DOI: 10.1016/j.jenvman.2021.112085] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/15/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
Herein we report a successful degradation of highly concentrated formaldehyde (HCHO, 900 ppm <) effluent from a petrochemical industry using sono-catalytic reaction on highly porous (BET surface of 128 m2 g-1) copper iodide (CuI) nanocrystals as the adsorbent. In this regard, the designed experiments for optimization indicated that the ultrasonic wave (40 kHz) and mass of adsorbent (30 g/L) were significant in HCHO removal so that the combination of the adsorption under ultrasonic degradation resulted in approaching the eliminating efficiency of more than 99%. In this way, GC-MS analysis confirmed the CO2 production during HCHO degradation. Although the physisorption mechanism (-15.56 kJ/mol) limited the HCHO concentration (~100 ppm) for removal, addition of ultrasonic irradiation significantly improved the process to eliminate 986 ppm of HCHO from the real petrochemical effluent. Moreover, the mechanisms of HCHO decomposition were scrutinized through theoretical studies (density functional theory (DFT)), as well as thermodynamic and kinetics theories. Correspondingly, as calculated from the DFT, the highest adsorption on cleavage plane (111) of the adsorbent was shown to be in complete agreement with its XRD analysis in which the main peak corresponds to the lattice plane (111).
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Affiliation(s)
- Ali Behrad Vakylabad
- Department of Materials Science, Institute of Science, High Technology & Environmental Sciences, Graduate University of Advanced Technology, Kerman, P.O. Box: 76315-117, Iran.
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10
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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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11
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Li Q, Yan Z, Wang N, Xu Z, Wang G, Huang G. 0D/2D CeO2 quantum dot/NiO nanoplate supported an ultralow-content Pt catalyst for the efficient oxidation of formaldehyde at room temperature. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00653j] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 0D/2D CeO2 quantum dot/NiO nanoplate supporting ultralow content of the Pt catalyst shows enhanced catalytic decomposition of formaldehyde at room temperature.
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Affiliation(s)
- Qin Li
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- and Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances
- Jianghan University
- Wuhan
- PR China
| | - Zhaoxiong Yan
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- and Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances
- Jianghan University
- Wuhan
- PR China
| | - Nenghuan Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- and Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances
- Jianghan University
- Wuhan
- PR China
| | - Zhihua Xu
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- and Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances
- Jianghan University
- Wuhan
- PR China
| | - Geming Wang
- School of Materials Science and Engineering
- Wuhan Institute of Technology
- Wuhan
- PR China
| | - Gang Huang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education
- and Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances
- Jianghan University
- Wuhan
- PR China
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12
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Xu Z, Huang G, Yan Z, Wang N, Yue L, Liu Q. Hydroxyapatite-Supported Low-Content Pt Catalysts for Efficient Removal of Formaldehyde at Room Temperature. ACS OMEGA 2019; 4:21998-22007. [PMID: 31891080 PMCID: PMC6933805 DOI: 10.1021/acsomega.9b03068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Indoor environmental quality directly affects the life quality and health of human beings, and therefore, it is highly vital to eliminate the volatile organic compounds especially formaldehyde (HCHO), which is regarded as one of the most common harmful pollutants in indoor air. Hydroxyapatite (HAP)-supported Pt (Pt/HAP) catalysts with a low content of Pt (0.2 wt %) obtained via hydrothermal and chemical reduction processes could effectively remove gaseous HCHO from the indoor environment at room temperature. The influence of modifier in the preparation on the catalyst activity was investigated. The HAP and HAP modified by sodium citrate and hexamethylenetetramine-supported 0.2 wt % Pt could completely decompose HCHO into CO2 and water, while HAP modified by sodium dodecyl-sulfate-supported Pt removed HCHO primarily via adsorption. The HAP modified by the sodium citrate catalyst exhibited superior catalytic performance of HCHO compared to the HAP and HAP modified by hexamethylenetetramine and sodium dodecyl-sulfate-supported Pt catalysts, which was mainly because of its higher surface Ca/P ratio providing more Lewis acidic sites (Ca2+) for co-operational capture of HCHO molecules and a larger amount of active oxygen species. Our results indicate that an optimized combination of functional supports and low-content noble metal nanoparticles could be a route to fabricate effective room-temperature catalysts for potential application in indoor air purification.
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Affiliation(s)
- Zhihua Xu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
| | - Gang Huang
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
| | - Zhaoxiong Yan
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
| | - Nenghuan Wang
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
| | - Lin Yue
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
| | - Qiongyu Liu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices of
Ministry of Education and Hubei Key Laboratory of Industrial Fume
and Dust Pollution Control and Hubei Key Laboratory of Environmental and
Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, P. R. China
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