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Guo H, Niu T, Yu J, Wang X, Si Y. Phase-Tailoring W x V 1-x O 2 Meta-Nanofiber Enables Temperature-Editing Energy Control. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306170. [PMID: 37759416 DOI: 10.1002/smll.202306170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/14/2023] [Indexed: 09/29/2023]
Abstract
Room-temperature phase change materials (RTPCMs) exhibit promise to address challenges in thermal energy storage and release, greatly aiding in numerous domains of human existence and productivity. The conventional RTPCMs undergo inevitable volume expansion, structural collapse, and diffusion of active ingredients while maintaining desirable phase change enthalpy and ideal phase change temperature. Here, a sol-gel 1D-induced growth approach is presented to fabricate meta nanofibers (Meta-NFs) comprised of vanadium dioxide with monoclinic crystal structure, and further achieve the editable phase change temperature from 68 to 37 °C through W-doping, which allowed for tailored length variation of the zigzag V-V bond. Subsequently, Meta-NFs are assembled into 3D aerogels with self-standing architecture, thereby enabling the independent use of the RTPCMs. The obtained metamaterials demonstrate not only the temperature-editing solid-solid phase transition, but also the stiffness of the ceramic matrix, exhibiting the thermal energy control capability at room temperature (37 °C), thermal insulation properties, temperature resistance, and flame retardancy. The effective creation of these fascinating metamaterials might offer new insights for next-generation and self-standing solid-solid RTPCMs.
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Affiliation(s)
- Hongyu Guo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Tianye Niu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Xueli Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
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Mohammadi A, Praty C, Farzi A, Soleimanzadeh H, Schwarz S, Stöger-Pollach M, Bernardi J, Penner S, Niaei A. Influence of CeO2 and WO3 Addition to Impregnated V2O5/TiO2 Catalysts on the Selective Catalytic Reduction of NOx with NH3. Catal Letters 2022. [DOI: 10.1007/s10562-022-04108-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Morales FM, Escanciano M, Yeste MP, Santos AJ. Reactivity of Vanadium Nanoparticles with Oxygen and Tungsten. NANOMATERIALS 2022; 12:nano12091471. [PMID: 35564179 PMCID: PMC9105859 DOI: 10.3390/nano12091471] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 12/04/2022]
Abstract
A mechanistic study was carried out on the optimal methods of fabrication of products containing higher loads of thermochromic VO2(M1) fabricated by thermal treatments of V nanoparticles in air, that, once achieved, are more stable than other commercial products upon natural aging or reiterated reheating. At the best temperatures for single runs, 55% of VO2 can be attained by the reactions of a limited number of the species initially formed in a process, that, if not stopped, can degrade the product by solid state reactions of oxidations and reductions without O2 consumption. This fact supports the use of two-step treatments at lower temperatures and faster cooling rates that reach 65% of VO2; such reactions should, ideally, take place in the 550–625 °C temperature range. The impregnation of V with a tungstate salt is an ideal and simple doping platform that can decrease the energy of activation of the 2-cycle process, allowing higher yields and enthalpies of transformation (71% of VO2, 26 J/g) than undoped counterparts or trademarks. A good balance is reached for 1% at. of W, with a reduction in Tc of 20 °C not significantly resenting the enthalpy of the reversible metal-to-insulator transition. For higher W amounts, the appearance of tetragonal VO2, and W alloyed V3O7 and V2O5, decrease the fractions of increasingly and effectively doped M1-VO2 achieved till 2% of W, a concentration for which Tc attains the stimulating values of 35 °C on heating and 25 °C on cooling.
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Affiliation(s)
- Francisco Miguel Morales
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, 11003 Cádiz, Spain; (M.E.); (M.P.Y.)
- Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, 11003 Cádiz, Spain
- Correspondence: (F.M.M.); (A.J.S.)
| | - Marta Escanciano
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, 11003 Cádiz, Spain; (M.E.); (M.P.Y.)
- Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, 11003 Cádiz, Spain
| | - María Pilar Yeste
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, 11003 Cádiz, Spain; (M.E.); (M.P.Y.)
- Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, 11003 Cádiz, Spain
| | - Antonio Jesús Santos
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, 11003 Cádiz, Spain; (M.E.); (M.P.Y.)
- Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, 11003 Cádiz, Spain
- Correspondence: (F.M.M.); (A.J.S.)
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Santos AJ, Escanciano M, Suárez-Llorens A, Pilar Yeste M, Morales FM. A Novel Route for the Easy Production of Thermochromic VO 2 Nanoparticles. Chemistry 2021; 27:16662-16669. [PMID: 34661929 PMCID: PMC9297899 DOI: 10.1002/chem.202102566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 11/09/2022]
Abstract
In this work, a simple, fast and dry method for the fabrication of a thermochromic product with a high load of VO2(M1) consisting of the controlled heat treatment of pure vanadium nanoparticles in air is presented. After a complete design of experiments, it is concluded that the most direct way to attain the maximum transformation of V into VO2(M1) consists of one cycle with a fast heating ramp of 42 °C s−1, followed by keeping 700 °C for 530–600 seconds, and a subsequent cooling at 0.05 °C s−1. Careful examination of these results lead to a second optimum, even more suitable for industrial production (quicker and less energy‐intensive because of its lower temperatures and shorter times), consisting of subjecting V to two consecutive cycles of temperatures and times (625 °C for 5 minutes) with similar preheating (42 °C s−1) but a much faster postcooling (∼ 8 °C s−1). These green reactions only use the power for heating a tube open to atmosphere and a vanadium precursor; without assistance of reactive gases or catalysts, and no special vacuum or pressure requirements. The best products present similar thermochromic properties but higher thermal stability than commercial VO2 particles. These methods can be combined with VO2 doping.
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Affiliation(s)
- Antonio J Santos
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, Cádiz, Spain.,Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
| | - Marta Escanciano
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, Cádiz, Spain.,Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
| | - Alfonso Suárez-Llorens
- Department of Statistics and Operative Investigation, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain.,INDESS: Institute of Research on Social and Sustainable Development, University of Cádiz, Jerez, Cádiz, Spain
| | - M Pilar Yeste
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, Cádiz, Spain.,Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
| | - Francisco M Morales
- IMEYMAT: Institute of Research on Electron Microscopy and Materials, University of Cadiz, Puerto Real, Cádiz, Spain.,Department of Materials Science, Metallurgical Engineering and Inorganic Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
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Makarevich A, Makarevich O, Ivanov A, Sharovarov D, Eliseev A, Amelichev V, Boytsova O, Gorodetsky A, Navarro-Cía M, Kaul A. Hydrothermal epitaxy growth of self-organized vanadium dioxide 3D structures with metal–insulator transition and THz transmission switch properties. CrystEngComm 2020. [DOI: 10.1039/c9ce01894h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The hydrothermal method is an effective approach for the synthesis of VO2 films with unique crystallites morphology and sharp electrical and optical switch properties.
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Affiliation(s)
- A. Makarevich
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russia
- SuperOx
| | - O. Makarevich
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russia
| | - A. Ivanov
- Department of Material Science
- Lomonosov Moscow State University
- Moscow
- Russia
| | - D. Sharovarov
- Department of Material Science
- Lomonosov Moscow State University
- Moscow
- Russia
| | - A. Eliseev
- Department of Material Science
- Lomonosov Moscow State University
- Moscow
- Russia
| | | | - O. Boytsova
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russia
- Department of Material Science
| | - A. Gorodetsky
- ITMO University
- St. Petersburg 197101
- Russia
- School of Physics and Astronomy
- University of Birmingham
| | - M. Navarro-Cía
- School of Physics and Astronomy
- University of Birmingham
- Birmingham
- UK
| | - A. Kaul
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow
- Russia
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