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Morales FM, Escanciano M, Yeste MP, Santos AJ. Reactivity of Vanadium Nanoparticles with Oxygen and Tungsten. Nanomaterials (Basel) 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Singh B, Na J, Konarova M, Wakihara T, Yamauchi Y, Salomon C, Gawande MB. Functional Mesoporous Silica Nanomaterials for Catalysis and Environmental Applications. BCSJ 2020. [DOI: 10.1246/bcsj.20200136] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Baljeet Singh
- CICECO-Aveiro Institute of Materials, University of Aveiro, Department of Chemistry, Aveiro 3810-193, Portugal
| | - Jongbeom Na
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Muxina Konarova
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Toru Wakihara
- Graduate School of Engineering, The University of Tokyo, 7 Chome-3-1 Hongo, Bunkyo, Tokyo 113-8654, Japan
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, Kagami Memorial Research Institute for Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan
| | - Carlos Salomon
- Exosome Biology Laboratory, Centre for Clinical Diagnostics, University of Queensland Centre for Clinical Research, Royal Brisbane and Women's Hospital, The University of Queensland, Brisbane, Queensland, Australia
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, University of Concepción, Concepción, Chile
| | - Manoj B. Gawande
- Regional Centre of Advanced Technologies and Materials, Palacky University, Šlechtitelů 27, Olomouc 783 71, Czech Republic
- Institute of Chemical Technology Mumbai-Marathwada Campus, Jalna, 431203 Maharashtra, India
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Takai-Yamashita C, Ando M, Razavi-Khosroshahi H, Fuji M. Acceleration of tungsten doping on vanadium dioxide (VO2) by alkali species. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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