Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk
In this paper, the ZnO–SiO2 was synthesized using ZnO nanopowders and SiO2 developed from coconut husk ash by using conventional solid state method. The ZnO–SiO2 crystal system was heat-treated and the properties was studied. The XRD results showed high intensity peaks due to its high crystallinity...
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| Format: | Article |
| Language: | English |
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Institute of Physics Publishing
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/86990/ http://psasir.upm.edu.my/id/eprint/86990/1/Optical%20studies%20of%20crystalline.pdf |
| _version_ | 1848860338259230720 |
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| author | Anuar, Muhammad Fahmi Yap, Wing Fen Mohd Zaid, Mohd Hafiz Sheh Omar, Nur Alia |
| author_facet | Anuar, Muhammad Fahmi Yap, Wing Fen Mohd Zaid, Mohd Hafiz Sheh Omar, Nur Alia |
| author_sort | Anuar, Muhammad Fahmi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this paper, the ZnO–SiO2 was synthesized using ZnO nanopowders and SiO2 developed from coconut husk ash by using conventional solid state method. The ZnO–SiO2 crystal system was heat-treated and the properties was studied. The XRD results showed high intensity peaks due to its high crystallinity when sintered at high temperature. The morphological differences can also be observed through FESEM images as the heat-treated crystal system showed well-distinct boundaries. Meanwhile, the absorbance intensity decreased and shifted to the lower wavelength after heat-treated. The optical band gap value of the ZnO–SiO2 was 3.22 eV before treated and increased to 4.05 eV after heat treated. The presented results showed good properties of zinc silicate and it has a great potential as phosphors in optical application. |
| first_indexed | 2025-11-15T12:43:39Z |
| format | Article |
| id | upm-86990 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:43:39Z |
| publishDate | 2020 |
| publisher | Institute of Physics Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-869902022-01-10T07:19:47Z http://psasir.upm.edu.my/id/eprint/86990/ Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk Anuar, Muhammad Fahmi Yap, Wing Fen Mohd Zaid, Mohd Hafiz Sheh Omar, Nur Alia In this paper, the ZnO–SiO2 was synthesized using ZnO nanopowders and SiO2 developed from coconut husk ash by using conventional solid state method. The ZnO–SiO2 crystal system was heat-treated and the properties was studied. The XRD results showed high intensity peaks due to its high crystallinity when sintered at high temperature. The morphological differences can also be observed through FESEM images as the heat-treated crystal system showed well-distinct boundaries. Meanwhile, the absorbance intensity decreased and shifted to the lower wavelength after heat-treated. The optical band gap value of the ZnO–SiO2 was 3.22 eV before treated and increased to 4.05 eV after heat treated. The presented results showed good properties of zinc silicate and it has a great potential as phosphors in optical application. Institute of Physics Publishing 2020-05 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/86990/1/Optical%20studies%20of%20crystalline.pdf Anuar, Muhammad Fahmi and Yap, Wing Fen and Mohd Zaid, Mohd Hafiz and Sheh Omar, Nur Alia (2020) Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk. Materials Research Express, 7 (2020). pp. 1-6. ISSN 2053-1591 https://iopscience.iop.org/article/10.1088/2053-1591/ab8a81 10.1088/2053-1591/ab8a81 |
| spellingShingle | Anuar, Muhammad Fahmi Yap, Wing Fen Mohd Zaid, Mohd Hafiz Sheh Omar, Nur Alia Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title | Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title_full | Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title_fullStr | Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title_full_unstemmed | Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title_short | Optical studies of crystalline ZnO-SiO2 developed from pyrolysis of coconut husk |
| title_sort | optical studies of crystalline zno-sio2 developed from pyrolysis of coconut husk |
| url | http://psasir.upm.edu.my/id/eprint/86990/ http://psasir.upm.edu.my/id/eprint/86990/ http://psasir.upm.edu.my/id/eprint/86990/ http://psasir.upm.edu.my/id/eprint/86990/1/Optical%20studies%20of%20crystalline.pdf |