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Chen M, Wang H, Wang J, Sun M, Hu Y, Zhao X, Zhou Y. Efficient degradation of formaldehyde based on DFT-screened metal-doped C 3N 6 monolayer photocatalysts: performance evaluation and mechanistic insights. Phys Chem Chem Phys 2023; 25:25353-25360. [PMID: 37703044 DOI: 10.1039/d3cp03160h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Photocatalytic oxidation is an efficient and promising technology for reducing indoor pollution levels of formaldehyde (HCHO). However, developing efficient and low-cost photocatalysts for the removal of HCHO remains challenging due to the time-consuming and expensive nature of traditional "trial and error" and "directed research" approaches. To achieve this goal, first-principles density functional theory (DFT) calculations were conducted to high-throughput screen candidate TM-C3N6 photocatalysts for high-performance degradation of HCHO. The results revealed that Zr-C3N6 and Hf-C3N6 in functionalizing C3N6 with 28 transition metals showed excellent adsorption energy of HCHO, boosting the highly effective capture of HCHO. Meanwhile, an excellent adsorption performance mechanism was further elicited by the electric structure-property relationship. In addition, reaction mechanisms for HCHO degradation and three potential reaction pathways for HCHO degradation were systematically evaluated. Our findings indicated that hydroxyl-assisted dehydrogenation and oxygen-assisted dehydrogenation are the most favorable pathways, with rate-limiting steps involving the formation of ˙OH and ˙O radicals. Overall, this study may provide new insights into a high-throughput screening of novel photocatalysts that are both high-performing and low-cost for the removal of formaldehyde. This, in turn, can accelerate the experimental development process and reduce the associated costs and time consumption.
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Affiliation(s)
- Mengshan Chen
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
| | - Haijian Wang
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
| | - Jinhu Wang
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
| | - Mingyuzhi Sun
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
| | - Yaxuan Hu
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
| | - Xue Zhao
- Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650000, China
| | - Yingtang Zhou
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, National Engineering Research Canter for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316004, China.
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Zhang J, Shan R, Xiao H, Hu S, Sheng Z, Qin X, Zhang Y, Wang L, Li J, Zhang C. Electronic Modification by Transitional Metal Dopants to Tune the Oxidation Activity of Pt-CeO 2-Based Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17331-17340. [PMID: 36354790 DOI: 10.1021/acs.est.2c07099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
While utilization of transitional metals as a promoter has been extensively studied to enhance the activity of Pt-based catalysts for the oxidation of formaldehyde (HCHO), there is still a lack of well elucidated property-function relationship for the rational selection of a promoter in catalyst design. Herein, we modified a Pt/CeO2 catalyst with two transitional metal dopants (i.e., Mn and Cu) that showed negligible influence on the physical structure of the Pt-CeO2 matrix but distinct effects on the activity of the catalyst. Complementary characterizations combined with density functional theory modeling revealed that the transitional metal dopants significantly modified the electronic structure of the catalyst and shifted the d-band of Pt to higher energy with different extents, which may tune the bonding strength of HCHO/intermediates with the Pt-CeO2 interface domain. The catalyst with moderate bonding strength (i.e., Pt-Mn/CeO2) displayed the highest reactivity under the ambient condition, while Pt-Cu/CeO2 with the highest bonding strength showed a dramatically decreased activity. No correlation was observed between the abundancy of the active oxygen and catalytic activity, likely due to the oxygen supply having a much higher rate than the rate-determining step. This work contributes to the elucidation about the property-function relationship of a transitional metal dopant in Pt-based catalysts for the oxidation of HCHO.
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Affiliation(s)
- Jianghao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ruoting Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Hongfei Xiao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shuo Hu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhenteng Sheng
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Xiaoxiao Qin
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhua Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Li Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Jinlin Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Wang J, Tao J, Dong X, Liu Z, Hou D, Hu Y, Yan B, Su H, Chen G. Hydrothermal oxygen uncoupling of high-concentration biogas slurry over Cu-α-Fe 2O 3·α-MoO 3 catalyst. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 320:115827. [PMID: 35944322 DOI: 10.1016/j.jenvman.2022.115827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/11/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
A hydrothermal oxygen uncoupling (HTOU) method which combines aqueous phase reforming (APR) and oxygen uncoupling was proposed to treat biogas slurry (BS). Based on Le Chatelier's principle, this novel approach was constructed and realized by Cu-α-Fe2O3·α-MoO3 catalyst with van der Waals heterojunction-redox property. Additionally, the catalyst was synthesized by integrating a simple one-pot sol-gel method and thermal hydrogenating. Results indicated that the optimal removal efficiencies of non-purgeable organic carbon (NPOC) (76.29%), total nitrogen (TN) (45.56%), and ammonia nitrogen (AN) (29.03%) were achieved on the Cu-α-Fe2O3·α-MoO3 catalyst at 225.00 °C for 30.00 min, respectively. The significant performance of Cu-α-Fe2O3·α-MoO3 could be attributed to three aspects. (1) The α-MoO3 nanosheets with van der Waals heterostructures obtained at the calcination temperature of 600.00 °C, which can provide the superior performance of APR for hydrogen generation. (2) The adsorbed oxygen species were eliminated by thermal hydrogenating which had a surface passivation effect. (3) The effect of oxygen uncoupling in the lattice oxygen and gaseous oxygen release reaction was beneficial to the degradation of organic matter. Moreover, the reuse of catalysts studies further revealed that the deactivation of catalysts originated from carbon deposition of aromatic polymers and heavy metals oxides pollution. Overall, these findings disclosed that the HTOU could be a promising alternative to the treatment of high-concentration organic wastewater.
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Affiliation(s)
- Jian Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Junyu Tao
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, 300134, China
| | - Xiaoshan Dong
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Zibiao Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Donghao Hou
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Yongjie Hu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Tianjin Key Lab of Biomass Wastes Utilization, Tianjin, 300350, China.
| | - Hong Su
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, 300134, China
| | - Guanyi Chen
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, 300134, China; Preparation Office of Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, 518071, China
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4
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Du Y, Qin C, Xu Y, Tian S, Bai J, Ding M. Deep Understanding into the Effect of Fe on CO 2 Methanation: A Support-Dependent Phenomenon. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yixiong Du
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Chuan Qin
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Yanfei Xu
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Shuhang Tian
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jingyang Bai
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Mingyue Ding
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518108, China
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5
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Ag@ Fe-TiO2 catalysts for catalytic oxidation of formaldehyde indoor: a further improvement of Fe-TiO2. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04442-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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6
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Yang L, Chen C, Rui Z, Ji H. Anodic aluminum oxide supported Pd@CeO2 catalyst for organic gas pollutants removal with an enhanced performance. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.04.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Facile one-pot preparation of Ti3+, N co-doping TiO2 nanotube arrays and enhanced photodegradation activities by tuning tube lengths and diameters. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.06.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Xia Y, Wang Z, Feng Y, Xie S, Liu Y, Dai H, Deng J. In situ molten salt derived iron oxide supported platinum catalyst with high catalytic performance for o-xylene elimination. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.01.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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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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10
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11
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An M, Li L, Cao Y, Ma F, Liu D, Gu F. Coral reef-like Pt/TiO2-ZrO2 porous composites for enhanced photocatalytic hydrogen production performance. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Li H, Ho W, Cao J, Park D, Lee SC, Huang Y. Active Complexes on Engineered Crystal Facets of MnO x-CeO 2 and Scale-Up Demonstration on an Air Cleaner for Indoor Formaldehyde Removal. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10906-10916. [PMID: 31441306 DOI: 10.1021/acs.est.9b03197] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Crystal facet-dominated surfaces determine the formation of surface-active complexes, and engineering specific facets is desirable for improving the catalytic activity of routine transition-metal oxides that often deactivate at low temperatures. Herein, MnOx-CeO2 was synthetically administered to tailor the exposure of three major facets, and their distinct surface-active complexes concerning the formation and quantitative effects of oxygen vacancies, catalytically active zones, and active-site behaviors were unraveled. Compared with two other low-index facets {110} and {001}, MnOx-CeO2 with exposed {111} facet showed higher activity for formaldehyde oxidation and CO2 selectivity. However, the {110} facet did not increase activity despite generating additional oxygen vacancies. Oxygen vacancies were highly stable on the {111} facet, and its bulk lattice oxygen at high migration rates could replenish the consumption of surface lattice oxygen, which was associated with activity and stability. High catalytically active regions were exposed at the {111}-dominated surfaces, wherein the predominated Lewis acid-base properties facilitated oxygen mobility and activation. The mineralization pathways of formaldehyde were examined by a combination of in situ X-ray photoemission spectroscopy and diffuse reflectance infrared Fourier transform spectrometry. The MnOx-CeO2-111 catalysts were subsequently scaled up to work as filter substrates in a household air cleaner. In in-field pilot tests, 8 h of exposure to an average concentration of formaldehyde after start-up of the air cleaner attained the Excellent Class of Indoor Air Quality Objectives in Hong Kong.
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Affiliation(s)
- Haiwei Li
- Department of Civil and Environmental Engineering , The Hong Kong Polytechnic University , Hong Kong , China
| | - Wingkei Ho
- Department of Science and Environmental Studies , The Education University of Hong Kong , Hong Kong , China
- State Key Laboratory of Marine Pollution , The City University of Hong Kong , Hong Kong , China
| | - Junji Cao
- State Key Laboratory of Loess and Quaternary Geology (SKLLQG) and Key Laboratory of Aerosol Chemistry and Physics , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an 710061 , China
| | - Duckshin Park
- Transportation Environmental Research Team , The Korea Railroad Research Institute , Gyeonggi-do 16105 , South Korea
| | - Shun-Cheng Lee
- Department of Civil and Environmental Engineering , The Hong Kong Polytechnic University , Hong Kong , China
| | - Yu Huang
- State Key Laboratory of Loess and Quaternary Geology (SKLLQG) and Key Laboratory of Aerosol Chemistry and Physics , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an 710061 , China
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13
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Wen H, Zhou X, Shen Z, Peng Z, Chen H, Hao L, Zhou H. Synthesis of ZnO nanoparticles supported on mesoporous SBA-15 with coordination effect -assist for anti-bacterial assessment. Colloids Surf B Biointerfaces 2019; 181:285-294. [DOI: 10.1016/j.colsurfb.2019.05.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/18/2019] [Accepted: 05/22/2019] [Indexed: 10/26/2022]
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14
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15
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Chen C, Sun M, Hu Z, Ren J, Zhang S, Yuan ZY. New insight into the enhanced catalytic performance of ZnPt/HZSM-5 catalysts for direct dehydrogenation of propane to propylene. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00237e] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Framework Zn species and small-sized PtZn particles in ZnPt/HZSM-5 catalyst function cooperatively in PDH, showing excellent performance at 525 °C.
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Affiliation(s)
- Chong Chen
- National Institute for Advanced Materials
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Minglei Sun
- National Institute for Advanced Materials
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Zhongpan Hu
- National Institute for Advanced Materials
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Jintao Ren
- National Institute for Advanced Materials
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Shoumin Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Zhong-Yong Yuan
- National Institute for Advanced Materials
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
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16
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Steam Reforming of Methanol over Nanostructured Pt/TiO2 and Pt/CeO2 Catalysts for Fuel Cell Applications. Catalysts 2018. [DOI: 10.3390/catal8110544] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A research and technological challenge for fuel processors integrated with High Temperature Polymer Electrolyte Membrane Fuel Cells (HT-PEMFCs), also known as Internal Reforming Methanol Fuel Cells (IRMFCs), operating at 200–220 °C, is the development of highly efficient catalysts, which will be able to selectively (low CO and other by-products formation) produce the required quantity of hydrogen at these temperatures. In this work, various amounts of platinum were dispersed via deposition-precipitation (DP) and impregnation (I) methods onto the surface of hydrothermally prepared ceria nanorods (CNRs) and titania nanotubes (TNTs). These nanostructured catalysts were evaluated in steam reforming of methanol process targeting the operation level of IRMFCs. The (DP) method resulted in highly (atomically) dispersed platinum-based catalysts, as confirmed with Scanning Transmission Electron Microscopy (STEM) analysis, with a mean particle size of less than 1 nm in the case of 0.35 wt.% Pt/CNRs catalyst. Ultra-fine dispersion of platinum species correlated with the presence of oxygen vacancies, together with the enrichment of CNRs surface with active metallic phase resulted in a highly active catalyst achieving at 220 °C a hydrogen production rate of 5500 cm3 min−1 per g of loaded platinum.
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Nie C, Liu L, He R. Pt/TiO2-ZnO in a circuit Photo-electro-catalytically removed HCHO for outstanding indoor air purification. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.06.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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18
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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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19
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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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20
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Shen Z, Zhou H, Chen H, Xu H, Feng C, Zhou X. Synthesis of Nano-Zinc Oxide Loaded on Mesoporous Silica by Coordination Effect and Its Photocatalytic Degradation Property of Methyl Orange. NANOMATERIALS 2018; 8:nano8050317. [PMID: 29747457 PMCID: PMC5977331 DOI: 10.3390/nano8050317] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/06/2018] [Accepted: 05/07/2018] [Indexed: 02/07/2023]
Abstract
Salicylaldimine-modified mesoporous silica (Sal-MCM-3 and Sal-MCM-9) was prepared through a co-condensation method with different amounts of added salicylaldimine. With the coordination from the salicylaldimine, zinc ions were impregnated on Sal-MCM-3 and Sal-MCM-9. Then, Zn-Sal-MCM-3 and Zn-Sal-MCM-9 were calcined to obtain nano-zinc oxide loaded on mesoporous silica (ZnO-MCM-3 and ZnO-MCM-9). The material structures were systematically studied by Fourier transform infrared spectroscopy (FTIR), N₂ adsorption/desorption measurements, X-ray powder diffraction (XRD), zeta potential, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet diffused reflectance spectrum (UV-vis DRS), and thermogravimetry (TGA). Methyl orange (MO) was used to investigate the photocatalysis behavior of ZnO-MCM-3 and ZnO-MCM-9. The results confirmed that nano ZnO was loaded in the channels as well as the outside surface of mesoporous silica (MCM-41). The modification of salicylaldimine helped MCM-41 to load more nano ZnO on MCM-41. When the modification amount of salicylaldimine was one-ninth and one-third of the mass of the silicon source, respectively, the load of nano ZnO on ZnO-MCM-9 and ZnO-MCM-3 had atomic concentrations of 1.27 and 2.03, respectively. ZnO loaded on ZnO-MCM-9 had a wurtzite structure, while ZnO loaded on ZnO-MCM-3 was not in the same crystalline group. The blocking effect caused by nano ZnO in the channels reduced the orderliness of MCM-41. The photodegradation of MO can be divided in two processes, which are mainly controlled by the surface areas of ZnO-MCM and the loading amount of nano ZnO, respectively. The pseudo-first-order model was more suitable for the photodegradation process.
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Affiliation(s)
- Zhichuan Shen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510220, China.
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou 510220, China.
| | - Hongjun Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510220, China.
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou 510220, China.
| | - Huayao Chen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510220, China.
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou 510220, China.
| | - Hua Xu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510220, China.
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou 510220, China.
| | - Chunhua Feng
- School of Environment and Energy, South China University of Technology, Guangzhou 510220, China.
| | - Xinhua Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510220, China.
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou 510220, China.
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21
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Kuśtrowski P, Rokicińska A, Kondratowicz T. Abatement of Volatile Organic Compounds Emission as a Target for Various Human Activities Including Energy Production. ADVANCES IN INORGANIC CHEMISTRY 2018. [DOI: 10.1016/bs.adioch.2018.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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22
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Li L, Zhang F, Zhong Z, Zhu M, Jiang C, Hu J, Xing W. Novel Synthesis of a High-Performance Pt/ZnO/SiC Filter for the Oxidation of Toluene. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02793] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Linlin Li
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Feng Zhang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Ming Zhu
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Chenyang Jiang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Jian Hu
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented
Chemical Engineering, National Engineering Research Center for Special
Separation Membrane, Nanjing Tech University, Nanjing 210009, Jiangsu China
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Rui Z, Tang M, Ji W, Ding J, Ji H. Insight into the enhanced performance of TiO 2 nanotube supported Pt catalyst for toluene oxidation. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.04.055] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Synergetic effect of oxygen vacancy and Pd site on the interaction between Pd/Anatase TiO 2 (101) and formaldehyde: A density functional theory study. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.06.037] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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