Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions
Silica borotellurite glasses with compositions SiO2][SiO2][SiO2] 0.2}0.99{V2O5}0.01]1-z (Ni0)z (where z = 0.005,0.010,0.015,0.020 and 0.025 M fraction) had been prepared by conventional melt quenching technique. XRay Diffractograms spectra confirm the amorphous nature of the prepared glasses. Stud...
| Main Authors: | , , , , , , , |
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| Format: | Article |
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Elsevier
2021
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| _version_ | 1811137610037329920 |
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| author | Mohd Nor, Nurhayati Mohamed Kamari, Halimah Abdul Latif, Amirah Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin Yusof, Nur Nabihah Boukhris, Imed Kebaili, Imen |
| author_facet | Mohd Nor, Nurhayati Mohamed Kamari, Halimah Abdul Latif, Amirah Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin Yusof, Nur Nabihah Boukhris, Imed Kebaili, Imen |
| author_sort | Mohd Nor, Nurhayati |
| collection | UPM |
| description | Silica borotellurite glasses with compositions SiO2][SiO2][SiO2]
0.2}0.99{V2O5}0.01]1-z (Ni0)z (where z =
0.005,0.010,0.015,0.020 and 0.025 M fraction) had been prepared by conventional melt quenching technique. XRay Diffractograms spectra confirm the amorphous nature of the prepared glasses. Study of infrared (IR) spectroscopy reveals an increase in the formation of nonbridging oxygens (NBOs) as nickel concentration increases.
This resulted in the decrease of density and oxygen packing density (OPD) of the glass. The observed ESR spectra
confirmed that V4+ ions exist as vanadyl ion in the octahedral coordination with tetragonal compression. Based
on UV–vis absorption spectra, four absorption bands have been observed with indirect optical band gap,
Urbach’s energy, refractive index and other optical parameters have been calculated. The Ni2+ ions were
distributed with octahedral and tetrahedral coordination of the ligand field. Nevertheless, the octahedral coordination of Ni2+ dominated over tetrahedral coordination with the increase of NiO concentration consequently,
confirmed the increase in NBOs from the IR spectra. These observations reflect the decrease in optical band gap,
metallization criterion and the increase in Urbach’s energy and refractive index. |
| first_indexed | 2024-09-25T03:37:02Z |
| format | Article |
| id | upm.eprints-102766 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-09-25T03:37:02Z |
| publishDate | 2021 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-1027662024-06-30T01:32:59Z http://psasir.upm.edu.my/id/eprint/102766/ Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions Mohd Nor, Nurhayati Mohamed Kamari, Halimah Abdul Latif, Amirah Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin Yusof, Nur Nabihah Boukhris, Imed Kebaili, Imen Silica borotellurite glasses with compositions SiO2][SiO2][SiO2] 0.2}0.99{V2O5}0.01]1-z (Ni0)z (where z = 0.005,0.010,0.015,0.020 and 0.025 M fraction) had been prepared by conventional melt quenching technique. XRay Diffractograms spectra confirm the amorphous nature of the prepared glasses. Study of infrared (IR) spectroscopy reveals an increase in the formation of nonbridging oxygens (NBOs) as nickel concentration increases. This resulted in the decrease of density and oxygen packing density (OPD) of the glass. The observed ESR spectra confirmed that V4+ ions exist as vanadyl ion in the octahedral coordination with tetragonal compression. Based on UV–vis absorption spectra, four absorption bands have been observed with indirect optical band gap, Urbach’s energy, refractive index and other optical parameters have been calculated. The Ni2+ ions were distributed with octahedral and tetrahedral coordination of the ligand field. Nevertheless, the octahedral coordination of Ni2+ dominated over tetrahedral coordination with the increase of NiO concentration consequently, confirmed the increase in NBOs from the IR spectra. These observations reflect the decrease in optical band gap, metallization criterion and the increase in Urbach’s energy and refractive index. Elsevier 2021 Article PeerReviewed Mohd Nor, Nurhayati and Mohamed Kamari, Halimah and Abdul Latif, Amirah and Mohd Shah, Nurisya and Shahrol Nidzam, Nazirul Nazrin and Yusof, Nur Nabihah and Boukhris, Imed and Kebaili, Imen (2021) Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions. Physica B: Condensed Matter, 627. art. no. 413553. pp. 1-11. ISSN 0921-4526; ESSN: 1873-2135 https://linkinghub.elsevier.com/retrieve/pii/S0921452621007079 10.1016/j.physb.2021.413553 |
| spellingShingle | Mohd Nor, Nurhayati Mohamed Kamari, Halimah Abdul Latif, Amirah Mohd Shah, Nurisya Shahrol Nidzam, Nazirul Nazrin Yusof, Nur Nabihah Boukhris, Imed Kebaili, Imen Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title | Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title_full | Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title_fullStr | Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title_full_unstemmed | Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title_short | Physical, structural and optical characterization of silica-borotellurite glasses containing vanadium and nickel ions |
| title_sort | physical structural and optical characterization of silica borotellurite glasses containing vanadium and nickel ions |
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