Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor
This study includes the synthesis of nano-sized lithium tetraborate by an innovative single step thermal treatment method and characterization of the products. The heating temperature for the synthesis was varied between 200 and 850 °C with the retention time of 2 h. Polyvinyl pyrrolidone (PVP) with...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/53826/ http://psasir.upm.edu.my/id/eprint/53826/1/Single%20step%20thermal%20treatment%20synthesis%20and%20characterization%20of%20lithium%20tetraborate%20nanophosphor.pdf |
| _version_ | 1848852385376501760 |
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| author | Khalilzadeh, Nasrin Saion, Elias Mirabolghasemi, Hamed Shaari, Abdul Halim Hashim, Mansor Ahmad @ Ayob, Mansor Mod Ali, Noriah Dehzangi, Arash |
| author_facet | Khalilzadeh, Nasrin Saion, Elias Mirabolghasemi, Hamed Shaari, Abdul Halim Hashim, Mansor Ahmad @ Ayob, Mansor Mod Ali, Noriah Dehzangi, Arash |
| author_sort | Khalilzadeh, Nasrin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study includes the synthesis of nano-sized lithium tetraborate by an innovative single step thermal treatment method and characterization of the products. The heating temperature for the synthesis was varied between 200 and 850 °C with the retention time of 2 h. Polyvinyl pyrrolidone (PVP) with different concentrations was used as surfactant. Characterization of the samples was achieved by thermogravimetric analysis (TGA), derivative thermogravimetry analysis (DTG), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) techniques and UV–vis spectroscopy. Thermal analysis of initial solution allowed the optimization of the heat treatment program and showed that the thermal stability of samples is started at 460 °C. FT-IR, XRD and TEM results proved the formation of pure nano-crystalline lithium tetraborate at temperature between 460 and 750 °C. Furthermore, the band gap investigation was performed using UV–vis spectra in the presence of different concentrations of PVP and in variety of calcination temperatures. The estimated optical bandgap was found to be between 5.2 and 6.2 eV. |
| first_indexed | 2025-11-15T10:37:14Z |
| format | Article |
| id | upm-53826 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:37:14Z |
| publishDate | 2016 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-538262018-02-06T09:03:49Z http://psasir.upm.edu.my/id/eprint/53826/ Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor Khalilzadeh, Nasrin Saion, Elias Mirabolghasemi, Hamed Shaari, Abdul Halim Hashim, Mansor Ahmad @ Ayob, Mansor Mod Ali, Noriah Dehzangi, Arash This study includes the synthesis of nano-sized lithium tetraborate by an innovative single step thermal treatment method and characterization of the products. The heating temperature for the synthesis was varied between 200 and 850 °C with the retention time of 2 h. Polyvinyl pyrrolidone (PVP) with different concentrations was used as surfactant. Characterization of the samples was achieved by thermogravimetric analysis (TGA), derivative thermogravimetry analysis (DTG), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) techniques and UV–vis spectroscopy. Thermal analysis of initial solution allowed the optimization of the heat treatment program and showed that the thermal stability of samples is started at 460 °C. FT-IR, XRD and TEM results proved the formation of pure nano-crystalline lithium tetraborate at temperature between 460 and 750 °C. Furthermore, the band gap investigation was performed using UV–vis spectra in the presence of different concentrations of PVP and in variety of calcination temperatures. The estimated optical bandgap was found to be between 5.2 and 6.2 eV. Elsevier 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/53826/1/Single%20step%20thermal%20treatment%20synthesis%20and%20characterization%20of%20lithium%20tetraborate%20nanophosphor.pdf Khalilzadeh, Nasrin and Saion, Elias and Mirabolghasemi, Hamed and Shaari, Abdul Halim and Hashim, Mansor and Ahmad @ Ayob, Mansor and Mod Ali, Noriah and Dehzangi, Arash (2016) Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor. Journal of Materials Research and Technology, 5 (1). pp. 37-44. ISSN 2238-7854; ESSN: 2214-0697 https://www.sciencedirect.com/science/article/pii/S223878541500071X 10.1016/j.jmrt.2015.05.005 |
| spellingShingle | Khalilzadeh, Nasrin Saion, Elias Mirabolghasemi, Hamed Shaari, Abdul Halim Hashim, Mansor Ahmad @ Ayob, Mansor Mod Ali, Noriah Dehzangi, Arash Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title | Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title_full | Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title_fullStr | Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title_full_unstemmed | Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title_short | Single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| title_sort | single step thermal treatment synthesis and characterization of lithium tetraborate nanophosphor |
| url | http://psasir.upm.edu.my/id/eprint/53826/ http://psasir.upm.edu.my/id/eprint/53826/ http://psasir.upm.edu.my/id/eprint/53826/ http://psasir.upm.edu.my/id/eprint/53826/1/Single%20step%20thermal%20treatment%20synthesis%20and%20characterization%20of%20lithium%20tetraborate%20nanophosphor.pdf |