Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass
In this study, for the first time, diamagnetic <i>5d</i><sup>0</sup> Ta<sup>5+</sup> ions and Ta<sub>2</sub>O<sub>5</sub> nanocrystals were utilized to enhance the structural, mechanical, magnetic, and radiation shielding of heavy metal oxi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/15/4494 |
| _version_ | 1797525342401855488 |
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| author | Xinhai Zhang Qiuling Chen Shouhua Zhang |
| author_facet | Xinhai Zhang Qiuling Chen Shouhua Zhang |
| author_sort | Xinhai Zhang |
| collection | DOAJ |
| description | In this study, for the first time, diamagnetic <i>5d</i><sup>0</sup> Ta<sup>5+</sup> ions and Ta<sub>2</sub>O<sub>5</sub> nanocrystals were utilized to enhance the structural, mechanical, magnetic, and radiation shielding of heavy metal oxide glasses. Transparent Ta<sub>2</sub>O<sub>5</sub> nanocrystal-doped heavy metal oxide glasses were obtained, and the embedded Ta<sub>2</sub>O<sub>5</sub> nanocrystals had sizes ranging from 20 to 30 nm. The structural analysis of the Ta<sub>2</sub>O<sub>5</sub> nanocrystal displays the transformation from hexagonal to orthorhombic Ta<sub>2</sub>O<sub>5</sub>. Structures of doped glasses were studied through X-ray diffraction and infrared and Raman spectra, which reveal that Ta<sub>2</sub>O<sub>5</sub> exists in highly doped glass as TaO<sub>6</sub> octahedral units, acting as a network modifier. Ta<sup>5+</sup> ions strengthened the network connectivity of 1–5% Ta<sub>2</sub>O<sub>5</sub>-doped glasses, but Ta<sup>5+</sup> acted as a network modifier in a 10% doped sample and changed the frame coordination units of the glass. All Ta<sub>2</sub>O<sub>5</sub>-doped glasses exhibited improved Vicker’s hardness, magnetization (9.53 × 10<sup>−6</sup> emu/mol), and radiation shielding behaviors (<i>RPE</i>% = 96–98.8%, <i>MAC</i> = 32.012 cm<sup>2</sup>/g, <i>MFP</i> = 5.02 cm, <i>HVL</i> = 0.0035–3.322 cm, and <i>Z<sub>eff</sub></i> = 30.5) due to the increase in density and polarizability of the Ta<sub>2</sub>O<sub>5</sub> nanocrystals. |
| first_indexed | 2024-03-10T09:11:28Z |
| format | Article |
| id | doaj.art-cfd15fd1cf8741e29fd2c68b55dbe262 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T09:11:28Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-cfd15fd1cf8741e29fd2c68b55dbe2622023-11-22T05:58:57ZengMDPI AGMolecules1420-30492021-07-012615449410.3390/molecules26154494Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide GlassXinhai Zhang0Qiuling Chen1Shouhua Zhang2School of Traffic and Materials Engineering, Hebi Polytechnic, Hebi 458030, ChinaMaterial Sciences & Engineering Department, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, ChinaSchool of Traffic and Materials Engineering, Hebi Polytechnic, Hebi 458030, ChinaIn this study, for the first time, diamagnetic <i>5d</i><sup>0</sup> Ta<sup>5+</sup> ions and Ta<sub>2</sub>O<sub>5</sub> nanocrystals were utilized to enhance the structural, mechanical, magnetic, and radiation shielding of heavy metal oxide glasses. Transparent Ta<sub>2</sub>O<sub>5</sub> nanocrystal-doped heavy metal oxide glasses were obtained, and the embedded Ta<sub>2</sub>O<sub>5</sub> nanocrystals had sizes ranging from 20 to 30 nm. The structural analysis of the Ta<sub>2</sub>O<sub>5</sub> nanocrystal displays the transformation from hexagonal to orthorhombic Ta<sub>2</sub>O<sub>5</sub>. Structures of doped glasses were studied through X-ray diffraction and infrared and Raman spectra, which reveal that Ta<sub>2</sub>O<sub>5</sub> exists in highly doped glass as TaO<sub>6</sub> octahedral units, acting as a network modifier. Ta<sup>5+</sup> ions strengthened the network connectivity of 1–5% Ta<sub>2</sub>O<sub>5</sub>-doped glasses, but Ta<sup>5+</sup> acted as a network modifier in a 10% doped sample and changed the frame coordination units of the glass. All Ta<sub>2</sub>O<sub>5</sub>-doped glasses exhibited improved Vicker’s hardness, magnetization (9.53 × 10<sup>−6</sup> emu/mol), and radiation shielding behaviors (<i>RPE</i>% = 96–98.8%, <i>MAC</i> = 32.012 cm<sup>2</sup>/g, <i>MFP</i> = 5.02 cm, <i>HVL</i> = 0.0035–3.322 cm, and <i>Z<sub>eff</sub></i> = 30.5) due to the increase in density and polarizability of the Ta<sub>2</sub>O<sub>5</sub> nanocrystals.https://www.mdpi.com/1420-3049/26/15/4494Ta<sub>2</sub>O<sub>5</sub>mechanical propertyradiation shieldingheavy metal oxide glass |
| spellingShingle | Xinhai Zhang Qiuling Chen Shouhua Zhang Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass Molecules Ta<sub>2</sub>O<sub>5</sub> mechanical property radiation shielding heavy metal oxide glass |
| title | Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass |
| title_full | Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass |
| title_fullStr | Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass |
| title_full_unstemmed | Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass |
| title_short | Ta<sub>2</sub>O<sub>5</sub> Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass |
| title_sort | ta sub 2 sub o sub 5 sub nanocrystals strengthened mechanical magnetic and radiation shielding properties of heavy metal oxide glass |
| topic | Ta<sub>2</sub>O<sub>5</sub> mechanical property radiation shielding heavy metal oxide glass |
| url | https://www.mdpi.com/1420-3049/26/15/4494 |
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