Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles
Interactions between incident electromagnetic energy and matter are of critical importance for numerous civil and military applications such as photocatalysis, solar cells, optics, radar detection, communications, information processing and transport et al. Traditional mechanisms for such interactio...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-03-01
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| Series: | Journal of Materiomics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847818301916 |
| _version_ | 1797709354614390784 |
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| author | Michael Green Peng Xiang Zhanqiang Liu James Murowchick Xinyu Tan Fuqiang Huang Xiaobo Chen |
| author_facet | Michael Green Peng Xiang Zhanqiang Liu James Murowchick Xinyu Tan Fuqiang Huang Xiaobo Chen |
| author_sort | Michael Green |
| collection | DOAJ |
| description | Interactions between incident electromagnetic energy and matter are of critical importance for numerous civil and military applications such as photocatalysis, solar cells, optics, radar detection, communications, information processing and transport et al. Traditional mechanisms for such interactions in the microwave frequency mainly rely on dipole rotations and magnetic domain resonance. In this study, we present the first report of the microwave absorption of Al/H2 treated TiO2 nanoparticles, where the Al/H2 treatment not only induces structural and optical property changes, but also largely improves the microwave absorption performance of TiO2 nanoparticles. Moreover, the frequency of the microwave absorption can be finely controlled with the treatment temperature, and the absorption efficiency can reach optimal values with a careful temperature tuning. A large reflection loss of −58.02 dB has been demonstrated with 3.1 mm TiO2 coating when the treating temperature is 700 °C. The high efficiency of microwave absorption is most likely linked to the disordering-induced property changes in the materials. Along with the increased microwave absorption properties are largely increased visible-light and IR absorptions, and enhanced electrical conductivity and reduced skin-depth, which is likely related to the interfacial defects within the TiO2 nanoparticles caused by the Al/H2 treatment. : Synopsis: Al/H2 treatment brings enhanced improvement in microwave absorption performance of TiO2 nanoparticles. Keywords: Microwave absorption, Black TiO2 nanoparticles, Hydrogenation, Aluminum reduction |
| first_indexed | 2024-03-12T06:36:16Z |
| format | Article |
| id | doaj.art-997af9fcda474d779ffb68367bfe689e |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T06:36:16Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-997af9fcda474d779ffb68367bfe689e2023-09-03T01:19:18ZengElsevierJournal of Materiomics2352-84782019-03-0151133146Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticlesMichael Green0Peng Xiang1Zhanqiang Liu2James Murowchick3Xinyu Tan4Fuqiang Huang5Xiaobo Chen6Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO, 64110, USACollege of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang, 443002, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaDepartment of Geosciences, University of Missouri–Kansas City, Kansas City, MO, 64110, USACollege of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang, 443002, China; Corresponding author.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; Corresponding author. Department of Chemistry, University of Missouri - Kansas City, Kansas City, MO, 64110, USA.Department of Chemistry, University of Missouri–Kansas City, Kansas City, MO, 64110, USA; Corresponding author.Interactions between incident electromagnetic energy and matter are of critical importance for numerous civil and military applications such as photocatalysis, solar cells, optics, radar detection, communications, information processing and transport et al. Traditional mechanisms for such interactions in the microwave frequency mainly rely on dipole rotations and magnetic domain resonance. In this study, we present the first report of the microwave absorption of Al/H2 treated TiO2 nanoparticles, where the Al/H2 treatment not only induces structural and optical property changes, but also largely improves the microwave absorption performance of TiO2 nanoparticles. Moreover, the frequency of the microwave absorption can be finely controlled with the treatment temperature, and the absorption efficiency can reach optimal values with a careful temperature tuning. A large reflection loss of −58.02 dB has been demonstrated with 3.1 mm TiO2 coating when the treating temperature is 700 °C. The high efficiency of microwave absorption is most likely linked to the disordering-induced property changes in the materials. Along with the increased microwave absorption properties are largely increased visible-light and IR absorptions, and enhanced electrical conductivity and reduced skin-depth, which is likely related to the interfacial defects within the TiO2 nanoparticles caused by the Al/H2 treatment. : Synopsis: Al/H2 treatment brings enhanced improvement in microwave absorption performance of TiO2 nanoparticles. Keywords: Microwave absorption, Black TiO2 nanoparticles, Hydrogenation, Aluminum reductionhttp://www.sciencedirect.com/science/article/pii/S2352847818301916 |
| spellingShingle | Michael Green Peng Xiang Zhanqiang Liu James Murowchick Xinyu Tan Fuqiang Huang Xiaobo Chen Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles Journal of Materiomics |
| title | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles |
| title_full | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles |
| title_fullStr | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles |
| title_full_unstemmed | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles |
| title_short | Microwave absorption of aluminum/hydrogen treated titanium dioxide nanoparticles |
| title_sort | microwave absorption of aluminum hydrogen treated titanium dioxide nanoparticles |
| url | http://www.sciencedirect.com/science/article/pii/S2352847818301916 |
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