1
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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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2
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Zhao R, Wang H, Zhao D, Liu R, Liu S, Fu J, Zhang Y, Ding H. Review on Catalytic Oxidation of VOCs at Ambient Temperature. Int J Mol Sci 2022; 23:ijms232213739. [PMID: 36430218 PMCID: PMC9697337 DOI: 10.3390/ijms232213739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/02/2022] [Accepted: 11/06/2022] [Indexed: 11/11/2022] Open
Abstract
As an important air pollutant, volatile organic compounds (VOCs) pose a serious threat to the ecological environment and human health. To achieve energy saving, carbon reduction, and safe and efficient degradation of VOCs, ambient temperature catalytic oxidation has become a hot topic for researchers. Firstly, this review systematically summarizes recent progress on the catalytic oxidation of VOCs with different types. Secondly, based on nanoparticle catalysts, cluster catalysts, and single-atom catalysts, we discuss the influence of structural regulation, such as adjustment of size and configuration, metal doping, defect engineering, and acid/base modification, on the structure-activity relationship in the process of catalytic oxidation at ambient temperature. Then, the effects of process conditions, such as initial concentration, space velocity, oxidation atmosphere, and humidity adjustment on catalytic activity, are summarized. It is further found that nanoparticle catalysts are most commonly used in ambient temperature catalytic oxidation. Additionally, ambient temperature catalytic oxidation is mainly applied in the removal of easily degradable pollutants, and focuses on ambient temperature catalytic ozonation. The activity, selectivity, and stability of catalysts need to be improved. Finally, according to the existing problems and limitations in the application of ambient temperature catalytic oxidation technology, new prospects and challenges are proposed.
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Affiliation(s)
- Rui Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Han Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Dan Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Rui Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Shejiang Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jianfeng Fu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Hui Ding
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
- Correspondence:
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3
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Recent Developments in Activated Carbon Catalysts Based on Pore Size Regulation in the Application of Catalytic Ozonation. Catalysts 2022. [DOI: 10.3390/catal12101085] [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
Due to its highly developed pore structure and large specific surface area, activated carbon is often used as a catalyst or catalyst carrier in catalytic ozonation. Although the pore structure of activated carbon plays a significant role in the treatment of wastewater and the mass transfer of ozone molecules, the effect is complicated and unclear. Because different application scenarios require catalysts with different pore structures, catalysts with appropriate pore structure characteristics should be developed. In this review, we systematically summarized the current adjustment methods for the pore structure of activated carbon, including raw material, carbonization, activation, modification, and loading. Then, based on the brief introduction of the application of activated carbon in catalytic ozonation, the effects of pore structure on catalytic ozonation and mass transfer are reviewed. Furthermore, we proposed that the effect of pore structure is mainly to provide catalytic active sites, promote free radical generation, and reduce mass transfer resistance. Therefore, large external surface area and reasonable pore size distribution are conducive to catalytic ozonation and mass transfer.
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4
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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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5
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Etim UJ, Bai P, Gazit OM, Zhong Z. Low-Temperature Heterogeneous Oxidation Catalysis and Molecular Oxygen Activation. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1919044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ubong J. Etim
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology (GTIIT), Shantou, Guangdong, China
| | - Peng Bai
- College of Chemical Engineering, China University of Petroleum, Qingdao, China
| | - Oz M. Gazit
- Wolfson Faculty of Chemical Engineering, Technion – Israel Institute of Technology, Haifa, Israel
| | - Ziyi Zhong
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology (GTIIT), Shantou, Guangdong, China
- Technion Israel Institute of Technology (IIT), Haifa, Israel
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6
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Noh J, Kwon SH, Park S, Kim KK, Yoon YJ. TiO 2 Nanorods and Pt Nanoparticles under a UV-LED for an NO 2 Gas Sensor at Room Temperature. SENSORS (BASEL, SWITZERLAND) 2021; 21:1826. [PMID: 33807891 PMCID: PMC7961387 DOI: 10.3390/s21051826] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/25/2021] [Accepted: 03/03/2021] [Indexed: 02/04/2023]
Abstract
Because the oxides of nitrogen (NOx) cause detrimental effects on not only the environment but humans, developing a high-performance NO2 gas sensor is a crucial issue for real-time monitoring. To this end, metal oxide semiconductors have been employed for sensor materials. Because in general, semiconductor-type gas sensors require a high working temperature, photoactivation has emerged as an alternative method for realizing the sensor working at room temperature. In this regard, titanium dioxide (TiO2) is a promising material for its photocatalytic ability with ultraviolet (UV) photonic energy. However, TiO2-based sensors inevitably encounter a problem of recombination of photogenerated electron-hole pairs, which occurs in a short time. To address this challenge, in this study, TiO2 nanorods (NRs) and Pt nanoparticles (NPs) under a UV-LED were used as an NO2 gas sensor to utilize the Schottky barrier formed at the TiO2-Pt junction, thereby capturing the photoactivated electrons by Pt NPs. The separation between the electron-hole pairs might be further enhanced by plasmonic effects. In addition, it is reported that annealing TiO2 NRs can achieve noteworthy improvements in sensing performance. Elucidation of the performance enhancement is suggested with the investigation of the X-ray diffraction patterns, which implies that the crystallinity was improved by the annealing process.
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Affiliation(s)
- Jinhong Noh
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea;
| | - Soon-Hwan Kwon
- Department of Advanced Convergence Technology, Research Institute of Advanced Convergence Technology, Korea Polytechnic University, Siheung-si 15073, Korea;
| | - Sunghoon Park
- Department of Intelligent and Mechatronics Engineering, Sejong University, Seoul 05006, Korea;
| | - Kyoung-Kook Kim
- Department of Advanced Convergence Technology, Research Institute of Advanced Convergence Technology, Korea Polytechnic University, Siheung-si 15073, Korea;
- Department of Nano & Semiconductor Engineering, Korea Polytechnic University, Siheung-si 15073, Korea
| | - Yong-Jin Yoon
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea;
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore
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7
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Su Y, Ji K, Xun J, Zhang K, Liu P, Zhao L. Catalytic oxidation of low concentration formaldehyde over Pt/TiO2 catalyst. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Qi L, Le Y, Wang C, Lei R, Wu T. Hierarchical nanostructures self-assembled from δ-MnO 2 ultrathin nanosheets and Mn 3O 4 octahedrons for efficient room-temperature HCHO oxidation. NEW J CHEM 2021. [DOI: 10.1039/d0nj05515h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Self-assembling ultrathin active δ-MnO2 nanosheets and Mn3O4 octahedrons into hierarchical texture enhances room-temperature formaldehyde oxidation at a low-level of Pt.
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Affiliation(s)
- Lifang Qi
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Yao Le
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Chao Wang
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Rui Lei
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Tian Wu
- Institute of Materials Research and Engineering (IMRE)
- Hubei University of Education
- Wuhan
- P. R. China
- College of Chemistry and Life Science
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9
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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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10
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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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11
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Wang Y, Zhang M, Lv S, Li X, Wang D, Song C. Photogenerated Oxygen Vacancies in Hierarchical Ag/TiO 2 Nanoflowers for Enhanced Photocatalytic Reactions. ACS OMEGA 2020; 5:13994-14005. [PMID: 32566866 PMCID: PMC7301581 DOI: 10.1021/acsomega.0c01390] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/22/2020] [Indexed: 05/06/2023]
Abstract
Oxygen vacancy (Vo) creation and morphology controlling make significant contributions to the electronic and structural regulation of metal oxide semiconductors, yet an investigation about convenient approaches for fabricating hierarchical catalyst with abundant oxygen vacancies still has significant challenges. Here, we report a unique method to create abundant oxygen vacancies in hierarchical Ag/TiO2 nanoflowers during photocatalytic reaction, which is accompanied by light absorption variation and surface plasmon resonance (SPR) enhancement. Its high efficiency of photocatalytic H2 evolution (the highest apparent quantum yield reaches 3.2% at 365 nm) and rhodamine B degradation can be considered as benefits from the synergistic effects of the well-arranged hierarchical structure, the photogenerated oxygen vacancies, and the SPR of cocatalyst Ag. This work proposes an effective strategy to optimize the synthesis of regular hierarchical structures and enriches the research on the vital function of oxygen vacancies in photocatalytic reactions.
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Affiliation(s)
- Ying Wang
- Key
Laboratory of Optic-electric Sensing and Analytical Chemistry for
Life Science (MOE), College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Miaomiao Zhang
- Key
Laboratory of Optic-electric Sensing and Analytical Chemistry for
Life Science (MOE), College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Shuhua Lv
- College
of Materials Science and Engineering, Qingdao
University of Science & Technology, Qingdao 266042, PR China
| | - Xiaoqian Li
- Key
Laboratory of Optic-electric Sensing and Analytical Chemistry for
Life Science (MOE), College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Debao Wang
- Key
Laboratory of Optic-electric Sensing and Analytical Chemistry for
Life Science (MOE), College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Caixia Song
- College
of Materials Science and Engineering, Qingdao
University of Science & Technology, Qingdao 266042, PR China
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12
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Ding J, Yang Y, Liu J, Wang Z. Catalytic reaction mechanism of formaldehyde oxidation by oxygen species over Pt/TiO 2 catalyst. CHEMOSPHERE 2020; 248:125980. [PMID: 32004886 DOI: 10.1016/j.chemosphere.2020.125980] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/22/2019] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
Theoretical calculations based on density functional theory (DFT) were employed to uncover the molecular-level oxidation mechanism of HCHO over Pt/TiO2 surface. All the three possible reaction mechanisms including Eley-Rideal mechanism, Langmuir-Hinshelwood mechanism and Mars-Van Krevelen mechanism were deeply investigated to determine the primary channel of HCHO oxidation on Pt/TiO2 catalyst. The adsorption energies and geometries show that HCHO and O2 are chemically adsorbed on Pt and Ti sites of the Pt/TiO2 catalyst surface, respectively. The adsorption energy of O2 (-141.91 kJ/mol) is higher than that of HCHO (-122.03 kJ/mol). HCHO oxidation reaction mainly occurs through the Eley-Rideal mechanism: gaseous HCHO reacts with activated O produced from the dissociation reaction of molecular oxygen on Pt/TiO2 surface by comparing the three possible mechanisms. HCHO oxidation reaction prefers the pathway of HCHO → H2CO2 → HCO2 → CO2. In the whole HCHO oxidation reaction, the elementary reaction of HCO2 dehydrogenation presents the highest activation energy barrier of 230.45 kJ/mol. Therefore, HCO2 dehydrogenation is recognized as the rate-determining step. The proposed skeletal reaction scheme can be used to well understand the microcosmic reaction process of HCHO oxidation on Pt/TiO2 catalyst.
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Affiliation(s)
- Junyan Ding
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yingju Yang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jing Liu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Zhen Wang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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13
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Wang X, Rui Z, Ji H. DFT study of formaldehyde oxidation on silver cluster by active oxygen and hydroxyl groups: Mechanism comparison and synergistic effect. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.06.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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14
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Huang G, Yan Z, Liu S, Luo T, An L, Xu Z. Bimetallic nickel molybdate supported Pt catalyst for efficient removal of formaldehyde at low temperature. J Environ Sci (China) 2020; 87:173-183. [PMID: 31791490 DOI: 10.1016/j.jes.2019.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/27/2019] [Accepted: 06/03/2019] [Indexed: 06/10/2023]
Abstract
Efficient removal of formaldehyde from indoor environments is of significance for human health. In this work, a typical binary transition metal oxide that could provide various oxidation states, β-NiMoO4, was employed as a support to immobilize the active Pt component (Pt/NiMoO4) for catalytic formaldehyde elimination at low ambient temperature (15°C). The results showed that the hydrothermal preparation temperature and time had a noticeable impact on the morphology and catalytic activity of the samples. The catalyst prepared with hydrothermal temperature of 150°C for 4 hr (Pt-150-4) exhibited superior catalytic activity and stability mainly due to its distinctly porous structure, relative abundance of adsorbed surface hydroxyls/water, and high oxidation ability, which resulted from the interaction of Pt with Ni and Mo of the bimetallic NiMoO4 support. Our results might shed light on the rational design of multifunctional catalysts for removal of indoor air pollutants at low ambient temperature.
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Affiliation(s)
- Gang Huang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Zhaoxiong Yan
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China.
| | - Shuyuan Liu
- Department of Pharmacology, Shenyang Medical College, Shenyang 110034, China
| | - Tingting Luo
- Materials Analysis Center, Wuhan University of Technology, Wuhan 430070, China
| | - Liang An
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Zhihua Xu
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China.
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15
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Morphology- and Crystalline Composition-Governed Activity of Titania-Based Photocatalysts: Overview and Perspective. Catalysts 2019. [DOI: 10.3390/catal9121054] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Titania photocatalysts have been intensively examined for both mechanism study and possible commercial applications for more than 30 years. Although various reports have already been published on titania, including comprehensive review papers, the morphology-governed activity, especially for novel nanostructures, has not been reviewed recently. Therefore, this paper presents novel, attractive, and prospective titania photocatalysts, including zero-, one-, two-, and three-dimensional titania structures. The 1D, 2D, and 3D titania structures have been mainly designed for possible applications, e.g., (i) continuous use without the necessity of particulate titania separation, (ii) efficient light harvesting (e.g., inverse opals), (iii) enhanced activity (fast charge carriers’ separation, e.g., 1D nanoplates and 2D nanotubes). It should be pointed out that these structures might be also useful for mechanism investigation, e.g., (i) 3D titania aerogels with gold either incorporated inside the 3D network or supported in the porosity, and (ii) titania mesocrystals with gold deposited either on basal or lateral surfaces, for the clarification of plasmonic photocatalysis. Moreover, 0D nanostructures of special composition and morphology, e.g., magnetic(core)–titania(shell), mixed-phase titania (anatase/rutile/brookite), and faceted titania NPs have been presented, due to their exceptional properties, including easy separation in the magnetic field, high activity, and mechanism clarification, respectively. Although anatase has been usually thought as the most active phase of titania, the co-existence of other crystalline phases accelerates the photocatalytic activity significantly, and thus mixed-phase titania (e.g., famous P25) exhibits high photocatalytic activity for both oxidation and reduction reactions. It is believed that this review might be useful for the architecture design of novel nanomaterials for broad and diverse applications, including environmental purification, energy conversion, synthesis and preparation of “intelligent” surfaces with self-cleaning, antifogging, and antiseptic properties.
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16
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Sui S, Zhang P, Zhang H, Cao R. Low-temperature catalytic degradation of the odorous pollutant hexanal by γ-MnOOH: The effect of Mn vacancies. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63415-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Photocatalytic Decomposition of Gaseous HCHO over Ag Modified TiO₂ Nanosheets at Ambient Temperature. NANOMATERIALS 2019; 9:nano9030338. [PMID: 30832352 PMCID: PMC6473944 DOI: 10.3390/nano9030338] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 11/17/2022]
Abstract
Ag nanoparticles loaded onto TiO2 nanosheets with exposed {001} facets were synthesized by solvothermal hydrolysis and photoreduction deposition methods. The results suggested that Ag NPs were uniformly dispersed on the surface of anatase TiO2 NSs with a metallic state. The Raman scattering and visible light absorption performances of Ag/TiO2 NSs were enhanced by Ag NPs due to their surface plasmon resonance effect. Photocatalytic oxidation experiments for HCHO were carried out under visible light, and the enhanced photocatalytic activity of Ag/TiO2 NSs can be attributed to the synergistic effects of the following factors: (1) the {001} facets, which possessed higher surface energy, showed higher photocatalytic activity; (2) the Ag NPs, the increased oxygen vacancies, and O2 adsorption on {001} facets can trap photoelectrons, thus inhibiting the recombination of photoelectrons and holes; (3) the Ag NPs can extend the light response range of TiO2 into visible light. The in situ FTIR results showed that higher mineralization efficiency of HCHO was achieved on Ag/TiO2 NSs than on Ag/TiO2 NPs. Additionally, the mechanism for HCHO photocatalytic oxidation was also discussed.
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18
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Shi Y, Qiao Z, Liu Z, Zuo J. Cerium Doped Pt/TiO2 for Catalytic Oxidation of Low Concentration Formaldehyde at Room Temperature. Catal Letters 2019. [DOI: 10.1007/s10562-019-02684-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Wang Q, Zhang C, Shi L, Zeng G, Zhang H, Li S, Wu P, Zhang Y, Fan Y, Liu G, Jiang Z, Liu Z, Sun Y. Ultralow Pt Catalyst for Formaldehyde Removal: The Determinant Role of Support. iScience 2018; 9:487-501. [PMID: 30471639 PMCID: PMC6260396 DOI: 10.1016/j.isci.2018.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/28/2018] [Accepted: 11/05/2018] [Indexed: 02/07/2023] Open
Abstract
Supported Pt catalyst has been intensively investigated for formaldehyde elimination owing to its superior reactivity at room temperature (RT). However, the high Pt content is challenging because of its high cost. Herein, we report PbO-supported Pt catalysts with only 0.1 wt % Pt, which can achieve complete conversion of formaldehyde and reliable stability at RT under demanding conditions. Both experiments and simulations demonstrate that PbO interacts strongly with the Pt species, resulting in tight Pb-O-Pt bonding at the metal/support interface and concomitant activation of the surface lattice oxygen of the support. Moreover, PbO exhibits an extremely high capacity of formaldehyde capture through methylene glycol chemisorption rather than the common hydroxyl-associated adsorption, presenting a different reaction mechanism because the active surface lattice oxygen in the vicinity of Pt species offers improved reactivity. This work provides a valuable example for the design of an efficient catalyst for formaldehyde and potentially oxidation of other carbohydrates. Pt% in catalyst for room temperature formaldehyde removal was reduced to 0.1 wt % 100% formaldehyde removal and reliable stability was achieved at room temperature PbO interacts strongly with the Pt species to form tight Pb-O-Pt bonding The active surface lattice oxygen close to Pt species offers improved reactivity
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Affiliation(s)
- Qiyan Wang
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Chemical Sciences, University of Chinese Academy of Science, Beijing 100049, China
| | - Chunlei Zhang
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Lei Shi
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Gaofeng Zeng
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
| | - Hui Zhang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Shenggang Li
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ping Wu
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yelei Zhang
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Chemical Sciences, University of Chinese Academy of Science, Beijing 100049, China
| | - Yiqiu Fan
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Guojuan Liu
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zheng Jiang
- Shanghai Synchrotron Radiation Facility, 2019 Jialuo Road, Shanghai 201800, China
| | - Zhi Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Yuhan Sun
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
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20
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Ding J, Chen J, Rui Z, Liu Y, Lv P, Liu X, Li H, Ji H. Synchronous pore structure and surface hydroxyl groups amelioration as an efficient route for promoting HCHO oxidation over Pt/ZSM-5. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.01.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Ultrastable photodegradation of formaldehyde under fluorescent lamp irradiation by anti-reflection structure SnS2/TiO2 composite. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Enhanced catalytic activity of graphene oxide/CeO2 supported Pt toward HCHO decomposition at room temperature. REACTION KINETICS MECHANISMS AND CATALYSIS 2018. [DOI: 10.1007/s11144-018-1348-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Kim GJ, Lee SM, Chang Hong S, Kim SS. Active oxygen species adsorbed on the catalyst surface and its effect on formaldehyde oxidation over Pt/TiO 2 catalysts at room temperature; role of the Pt valence state on this reaction? RSC Adv 2018; 8:3626-3636. [PMID: 35542915 PMCID: PMC9077708 DOI: 10.1039/c7ra11294g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 12/15/2017] [Indexed: 11/21/2022] Open
Abstract
Pt/TiO2 catalysts, prepared by reduction pretreatment, showed enhanced catalytic activities in formaldehyde oxidation. X-ray photoelectron spectroscopy analysis confirmed that catalytic activity was affected by Pt valence states in the Pt/TiO2 catalyst. Using O2 re-oxidation tests, we showed that there was a correlation between the area of oxygen consumed and the ratio of metallic Pt species on the catalyst surface. The O2 re-oxidation ability was involved in the production of the adsorbed formate intermediate from HCHO, confirmed through diffuse reflectance infrared Fourier transform spectroscopy analysis. Furthermore, metallic Pt species were involved in the oxidation of adsorbed CO to CO2.
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Affiliation(s)
- Geo Jong Kim
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 443-760 Republic of Korea +82-31-2544941
| | - Sang Moon Lee
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 443-760 Republic of Korea +82-31-2544941
| | - Sung Chang Hong
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 443-760 Republic of Korea +82-31-2544941
| | - Sung Su Kim
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 443-760 Republic of Korea +82-31-2544941
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24
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Lu S, Wang X, Zhu Q, Chen C, Zhou X, Huang F, Li K, He L, Liu Y, Pang F. Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature. RSC Adv 2018; 8:14221-14228. [PMID: 35540748 PMCID: PMC9079893 DOI: 10.1039/c8ra01611a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 03/26/2018] [Indexed: 11/21/2022] Open
Abstract
A series of Ag–K/MnO2 nanorods with various molar ratios of K/Ag were synthesized by a conventional wetness incipient impregnation method. The as-prepared catalysts were used for the catalytic oxidation of HCHO. The Ag–K/MnO2 nanorods with an optimal K/Ag molar ratio of 0.9 demonstrated excellent HCHO conversion efficiency of 100% at a low temperature of 60 °C. The structures of the samples were investigated by BET, TEM, SEM, XRD, H2-TPR, O2-TPD and XPS. The results showed that Ag–0.9K/MnO2-r exhibited more facile reducibility and greatly abundant surface active oxygen species, endowing it with the best catalytic activity of the studied catalysts. This work provides new insights into the development of low-cost and highly efficient catalysts for the removal of HCHO. Ag–K/MnO2 nanorods with appropriate K/Ag ratio demonstrated excellent catalytic activity for complete oxidation of formaldehyde.![]()
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Affiliation(s)
- Suhong Lu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Xue Wang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Qinyu Zhu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Canchang Chen
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Xuefeng Zhou
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Fenglin Huang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Kelun Li
- Shaanxi Coal and Chemical Technology Institute Co., Ltd
- Xi'an 710070
- China
| | - Lulu He
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Yanxiong Liu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Fanjue Pang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
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25
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Jiang X, Li X, Wang J, Long D, Ling L, Qiao W. Three-dimensional Mn–Cu–Ce ternary mixed oxide networks prepared by polymer-assisted deposition for HCHO catalytic oxidation. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00212f] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mn–Cu–Ce ternary mixed oxide networks with a three-dimensional (3D) structure were developed by a polymer-assisted deposition method.
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Affiliation(s)
- Xinnan Jiang
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaohui Li
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jitong Wang
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology
| | - Donghui Long
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Licheng Ling
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology
| | - Wenming Qiao
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
- Key Laboratory of Specially Functional Polymeric Materials and Related Technology
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26
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Wu HC, Chen TC, Chen YC, Lee JF, Chen CS. Formaldehyde oxidation on silica-supported Pt catalysts: The influence of thermal pretreatments on particle formation and on oxidation mechanism. J Catal 2017. [DOI: 10.1016/j.jcat.2017.08.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Yan Z, Xu Z, Yu J, Jaroniec M. Effect of microstructure and surface hydroxyls on the catalytic activity of Au/AlOOH for formaldehyde removal at room temperature. J Colloid Interface Sci 2017; 501:164-174. [DOI: 10.1016/j.jcis.2017.04.050] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/18/2017] [Accepted: 04/18/2017] [Indexed: 10/19/2022]
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28
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Duan Y, Song S, Cheng B, Yu J, Jiang C. Effects of hierarchical structure on the performance of tin oxide-supported platinum catalyst for room-temperature formaldehyde oxidation. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(16)62551-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Zhu X, Yu J, Jiang C, Cheng B. Catalytic decomposition and mechanism of formaldehyde over Pt–Al2O3 molecular sieves at room temperature. Phys Chem Chem Phys 2017; 19:6957-6963. [DOI: 10.1039/c6cp08223h] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Al2O3 molecular sieve supported Pt was prepared for catalytic formaldehyde oxidation at room temperature.
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Affiliation(s)
- Xiaofeng Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
- Department of Physics
| | - Chuanjia Jiang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
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30
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Yang K, Li J, Peng Y, Lin J. Enhanced visible light photocatalysis over Pt-loaded Bi2O3: an insight into its photogenerated charge separation, transfer and capture. Phys Chem Chem Phys 2017; 19:251-257. [DOI: 10.1039/c6cp06755g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystalline metallic Pt nanoparticles loaded on Bi2O3 promote the efficient separation of photogenerated electron–hole pairs by rapidly transferring electrons to the surface oxygen to form H2O2, leaving holes on the valence band to drive the degradation of organic compounds and the production of ˙OH radicals.
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Affiliation(s)
- Kailun Yang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- People's Republic of China
| | - Jia Li
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- People's Republic of China
| | - Yang Peng
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- People's Republic of China
| | - Jun Lin
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- People's Republic of China
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31
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Liu B, Yang J, Zhao X, Yu J. The role of electron interfacial transfer in mesoporous nano-TiO2 photocatalysis: a combined study of in situ photoconductivity and numerical kinetic simulation. Phys Chem Chem Phys 2017; 19:8866-8873. [DOI: 10.1039/c6cp07328j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study showed that electron interfacial transfer is rate-determined for the whole electron kinetics during the gaseous photocatalysis of formic acid due to the existence of a high thermal barrier.
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Affiliation(s)
- Baoshun Liu
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan City
- People's Republic of China
| | - Jingjing Yang
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan City
- People's Republic of China
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan City
- People's Republic of China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and processing
- Wuhan University of Technology
- Wuhan City
- People's Republic of China
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32
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Promoting effect of acid treatment on Pd-Ni/SBA-15 catalyst for complete oxidation of gaseous benzene. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.10.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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33
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Guo H, Li M, Liu X, Meng C, Linguerri R, Han Y, Chambaud G. Fe atoms trapped on graphene as a potential efficient catalyst for room-temperature complete oxidation of formaldehyde: a first-principles investigation. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00307b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe atoms trapped on graphene stabilize high-spin intermediates and facilitate spin switching to keep complete oxidation of formaldehyde efficient.
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Affiliation(s)
- Huimin Guo
- School of Chemistry
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- P. R. China
| | - Min Li
- School of Chemistry
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- P. R. China
| | - Xin Liu
- School of Chemistry
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- P. R. China
| | - Changgong Meng
- School of Chemistry
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- P. R. China
| | - Roberto Linguerri
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- F-77454 Marne-la-Vallée
- France
| | - Yu Han
- Physical Sciences and Engineering Division
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology
- Thuwal
- Saudi Arabia
| | - Gilberte Chambaud
- Université Paris-Est
- Laboratoire Modélisation et Simulation Multi Echelle
- MSME UMR 8208 CNRS
- F-77454 Marne-la-Vallée
- France
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34
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Enhanced room-temperature HCHO decomposition activity of highly-dispersed Pt/Al2O3 hierarchical microspheres with exposed {110} facets. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.09.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Qi L, Cheng B, Yu J, Ho W. High-surface area mesoporous Pt/TiO₂ hollow chains for efficient formaldehyde decomposition at ambient temperature. JOURNAL OF HAZARDOUS MATERIALS 2016; 301:522-30. [PMID: 26414928 DOI: 10.1016/j.jhazmat.2015.09.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/08/2015] [Accepted: 09/13/2015] [Indexed: 05/12/2023]
Abstract
Room-temperature catalytic decomposition of formaldehyde (HCHO) is considered as one of the most main methods for the removal of indoor HCHO due to its facile reaction conditions. Herein, high-surface area mesoporous Pt/TiO2 hollow chains were synthesized in high yield by using a simple microwave-hydrothermal route, followed by a combined NaOH-assisted NaBH4-reduction deposition of Pt nanoparticles on the as-obtained TiO2 surface. The catalytic activity for HCHO decomposition was evaluated at room temperature. The prepared Pt/TiO2 hollow chains with an optimal Pt loading of 0.5 wt.% exhibited high catalytic activity and recyclability. The apparent reaction rate constant of HCHO oxidation over this catalyst was approximately 1.42×10(-3) ppm(-1) min(-1), exceeding that of the commercial Degussa P25 TiO2 with equal Pt content (k=5.36×10(-4) ppm(-1) min(-1)) by a factor of approximately 2.65. The high catalytic activity of the Pt/TiO2 hollow chains could be mainly attributed to the hollow chain-like structure, high specific surface area, numerous mesopores, and high pore volume of TiO2 support. Consequently, the catalysts exhibited high adsorption capacity for HCHO, fast diffusion and transport of gas molecules, and good contact between gases and active sites. These characteristics enhanced the catalytic activity.
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Affiliation(s)
- Lifang Qi
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122#, Wuhan 430070, PR China; Department of Construction and Materials Engineering, Hubei University of Education, Gaoxin Road 129, Wuhan 430205, PR China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122#, Wuhan 430070, PR China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122#, Wuhan 430070, PR China; Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Wingkei Ho
- Department of Science and Environmental Studies and Centre for Education in Environmental Sustainability, The Hong Kong Institute of Education, Tai Po, N. T. Hong Kong, PR China.
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36
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Nie L, Yu J, Jaroniec M, Tao FF. Room-temperature catalytic oxidation of formaldehyde on catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00062b] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Room-temperature catalytic oxidative decomposition of harmful formaldehyde (HCHO) in indoor air is summarized.
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Affiliation(s)
- Longhui Nie
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- PR China
- Department of Chemical and Petroleum Engineering and Department of Chemistry
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- PR China
- Department of Physics
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry
- Kent State University
- Kent
- USA
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering and Department of Chemistry
- University of Kansas
- USA
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37
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Abstract
The design, fabrication, performance and applications of hierarchical semiconductor photocatalysts are thoroughly reviewed and apprised.
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Affiliation(s)
- Xin Li
- College of Materials and Energy
- South China Agricultural University
- Guangzhou
- P. R. China
- Key Laboratory of Energy Plants Resource and Utilization
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- P. R. China
- Department of Physics
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry
- Kent State University
- Kent
- USA
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38
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Ye J, Cheng B, Wageh S, Al-Ghamdi AA, Yu J. Flexible Mg–Al layered double hydroxide supported Pt on Al foil for use in room-temperature catalytic decomposition of formaldehyde. RSC Adv 2016. [DOI: 10.1039/c6ra02569b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Flexible and bendable Mg–Al layered double hydroxide supported Pt catalysts fabricated and used in room-temperature catalytic decomposition of formaldehyde.
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Affiliation(s)
- Jiawei Ye
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
| | - S. Wageh
- Department of Physics
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Ahmed A. Al-Ghamdi
- Department of Physics
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan
- China
- Department of Physics
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39
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Lu Z, Zhu Z, Wang D, Ma Z, Shi W, Yan Y, Zhao X, Dong H, Yang L, Hua Z. Specific oriented recognition of a new stable ICTX@Mfa with retrievability for selective photocatalytic degrading of ciprofloxacin. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01324k] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new imprinted photocatalyst ICTX@Mfa which exhibits superior specific oriented recognition capability, stability and retrievability for selectively degrading ciprofloxacin.
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Affiliation(s)
- Ziyang Lu
- School of the Environment Safety Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
- School of Chemistry & Chemical Engineering
| | - Zhi Zhu
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Dandan Wang
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Zhongfei Ma
- School of the Environment Safety Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Weidong Shi
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Yongsheng Yan
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xiaoxu Zhao
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Hongjun Dong
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Li Yang
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Zhoufa Hua
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
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40
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Chen F, Liu S, Yu J. Efficient removal of gaseous formaldehyde in air using hierarchical titanate nanospheres with in situ amine functionalization. Phys Chem Chem Phys 2016; 18:18161-8. [DOI: 10.1039/c6cp03037h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amine-grafted titanate nanospheres are fabricated as efficient and recyclable adsorbents for formaldehyde removal.
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Affiliation(s)
- Feng Chen
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Shengwei Liu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
- School of Environmental Science and Engineering
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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41
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Wen J, Li X, Liu W, Fang Y, Xie J, Xu Y. Photocatalysis fundamentals and surface modification of TiO2 nanomaterials. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60999-8] [Citation(s) in RCA: 400] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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42
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Efficient photocatalytic degradation of NO by ceramic foam air filters coated with mesoporous TiO2 thin films. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)61003-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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43
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Li B, Hao Y, Shao X, Tang H, Wang T, Zhu J, Yan S. Synthesis of hierarchically porous metal oxides and Au/TiO2 nanohybrids for photodegradation of organic dye and catalytic reduction of 4-nitrophenol. J Catal 2015. [DOI: 10.1016/j.jcat.2015.05.015] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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44
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Cui W, Yuan X, Wu P, Zheng B, Zhang W, Jia M. Catalytic properties of γ-Al2O3 supported Pt–FeOx catalysts for complete oxidation of formaldehyde at ambient temperature. RSC Adv 2015. [DOI: 10.1039/c5ra19151c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A Pt–FeOx/Al2O3 catalyst with suitable Fe/Pt ratio showed excellent catalytic activity and stability for complete oxidation of formaldehyde at ambient temperature.
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Affiliation(s)
- Weiyi Cui
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
| | - Xiaoling Yuan
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
| | - Ping Wu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
| | - Bin Zheng
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
| | - Wenxiang Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
| | - Mingjun Jia
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- 130021 Changchun
- China
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45
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Dou L, Fan T, Zhang H. A novel 3D oxide nanosheet array catalyst derived from hierarchical structured array-like CoMgAl-LDH/graphene nanohybrid for highly efficient NOx capture and catalytic soot combustion. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00846h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel 3D oxide nanosheet array catalyst was fabricated using a graphene template induced strategy for highly efficient NOx capture and catalytic soot combustion.
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Affiliation(s)
- Liguang Dou
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Ting Fan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Hui Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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46
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Li S, Liu F, Niu F, Gu L, Su Y, Yang Y. Purification of phosvitin phosphopeptides using macro-mesoporous TiO2. RSC Adv 2015. [DOI: 10.1039/c5ra12132a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Purification of phosvitin phosphopeptides from egg-yolk protein hydrolysates using macro-mesoporous TiO2.
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Affiliation(s)
- Songna Li
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
| | - Feng Liu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
| | - Fuge Niu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
| | - Luping Gu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
| | - Yujie Su
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
| | - Yanjun Yang
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- PR China
- School of Food Science and Technology
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