Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders
The nano VO2 powders were prepared by hydrothermal synthesis. The effects of Gd and Nd element doping on the structure and phase transition temperature of VO2 were studied. The X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), and Transmission elect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-05-01
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| Series: | Green Processing and Synthesis |
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| Online Access: | https://doi.org/10.1515/gps-2022-0055 |
| _version_ | 1818027406188871680 |
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| author | Wang Bin Zhao Dandan Du Jinjing Li Linbo Zhu Jun Wang Chao |
| author_facet | Wang Bin Zhao Dandan Du Jinjing Li Linbo Zhu Jun Wang Chao |
| author_sort | Wang Bin |
| collection | DOAJ |
| description | The nano VO2 powders were prepared by hydrothermal synthesis. The effects of Gd and Nd element doping on the structure and phase transition temperature of VO2 were studied. The X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM) results showed that Gd element and Nd element will affect the structure of VO2. Gd3+ and Nd3+ can occupy partial position of V4+ lattice and form solid solution, increasing the lattice parameters of VO2. Both the doped and un-doped VO2 powders exhibit a monoclinic structure at room temperature. Due to the lattice deformation caused by Gd or Nd doping, the aggregation of particles is prevented, and the grain is refined obviously. Differential scanning calorimetry curves showed that both Gd doping and Nd doping can reduce the phase transition temperature of VO2(M). When the Gd doping concentration is 6 at%, the phase transition temperature can be reduced from 71.7°C to 60.3°C, and the infrared transmittance before and after the phase transition also changes significantly, reaching more than 40%. Nd doping is similar, and the phase transition temperature decreased to 55.6°C with the addition of 9 at% Nd. |
| first_indexed | 2024-12-10T04:47:23Z |
| format | Article |
| id | doaj.art-d218044521914224b707acb1fd9e401b |
| institution | Directory Open Access Journal |
| issn | 2191-9550 |
| language | English |
| last_indexed | 2024-12-10T04:47:23Z |
| publishDate | 2022-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Green Processing and Synthesis |
| spelling | doaj.art-d218044521914224b707acb1fd9e401b2022-12-22T02:01:42ZengDe GruyterGreen Processing and Synthesis2191-95502022-05-0111157258110.1515/gps-2022-0055Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powdersWang Bin0Zhao Dandan1Du Jinjing2Li Linbo3Zhu Jun4Wang Chao5School of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaDepartment of Mechanical Engineering, The University of Texas at Dallas, Richardson, Texas 75080, United States of AmericaThe nano VO2 powders were prepared by hydrothermal synthesis. The effects of Gd and Nd element doping on the structure and phase transition temperature of VO2 were studied. The X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM) results showed that Gd element and Nd element will affect the structure of VO2. Gd3+ and Nd3+ can occupy partial position of V4+ lattice and form solid solution, increasing the lattice parameters of VO2. Both the doped and un-doped VO2 powders exhibit a monoclinic structure at room temperature. Due to the lattice deformation caused by Gd or Nd doping, the aggregation of particles is prevented, and the grain is refined obviously. Differential scanning calorimetry curves showed that both Gd doping and Nd doping can reduce the phase transition temperature of VO2(M). When the Gd doping concentration is 6 at%, the phase transition temperature can be reduced from 71.7°C to 60.3°C, and the infrared transmittance before and after the phase transition also changes significantly, reaching more than 40%. Nd doping is similar, and the phase transition temperature decreased to 55.6°C with the addition of 9 at% Nd.https://doi.org/10.1515/gps-2022-0055nano vo2 powderhydrothermal synthesisgd/nd dopingmicrostructurephase transition |
| spellingShingle | Wang Bin Zhao Dandan Du Jinjing Li Linbo Zhu Jun Wang Chao Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders Green Processing and Synthesis nano vo2 powder hydrothermal synthesis gd/nd doping microstructure phase transition |
| title | Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders |
| title_full | Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders |
| title_fullStr | Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders |
| title_full_unstemmed | Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders |
| title_short | Synthesis, microstructure, and phase transition characteristics of Gd/Nd-doped nano VO2 powders |
| title_sort | synthesis microstructure and phase transition characteristics of gd nd doped nano vo2 powders |
| topic | nano vo2 powder hydrothermal synthesis gd/nd doping microstructure phase transition |
| url | https://doi.org/10.1515/gps-2022-0055 |
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