Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications
In this study, a natural mineral termed hydroxyapatite (HA) (Ca10(PO4)6(OH)2) was produced with TiO2 stoichiometrically by normal sol-gel process. An investigation on how the different percentage weights of HA on TiO2 can affect its optical and morphological properties was carried out, while the...
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| Format: | Article |
| Language: | English |
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Department of Physics, Kaduna State University, Nigeria
2022-11-01
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| Series: | Physics Access |
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| Online Access: | https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_37.pdf |
| _version_ | 1811174221624115200 |
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| author | Yunana Tanko Haruna Ali Muhammad Y Onimisi |
| author_facet | Yunana Tanko Haruna Ali Muhammad Y Onimisi |
| author_sort | Yunana Tanko |
| collection | DOAJ |
| description | In this study, a natural mineral termed hydroxyapatite (HA) (Ca10(PO4)6(OH)2) was produced
with TiO2 stoichiometrically by normal sol-gel process. An investigation on how the different
percentage weights of HA on TiO2 can affect its optical and morphological properties was
carried out, while the morphological nature and elemental composition were verified through
scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX)
analysis. Consequently UV–visible spectroscopy was used to measure the absorbance data,
where optical constants such as absorption coefficient, extension coefficient, refractive index,
transmittance, absorbance, thermal conductivity, the electron-phonon interaction and steepness
parameter were evaluated. According to the optical examination, the transmittance in the visible
range is between (400 and 800 nm), and the absorption response in the UV region is between
(200 and 400 nm) with an absorption edge occurring between (650 and 950 nm). The value of
the absorption coefficient (α) and extension coefficient (k) of HA/TiO2 increased with an
increase in the percentage weight (wt%) of HA. Equally, the optical conductivity increases with
an increase in photon energy. In addition, the band gap energy decreases as the percentage
weight of HA increases. |
| first_indexed | 2024-04-10T17:59:32Z |
| format | Article |
| id | doaj.art-7eeb057dbbf6475697476f1d7c2f1de8 |
| institution | Directory Open Access Journal |
| issn | 2714-500X 2756-3898 |
| language | English |
| last_indexed | 2024-04-10T17:59:32Z |
| publishDate | 2022-11-01 |
| publisher | Department of Physics, Kaduna State University, Nigeria |
| record_format | Article |
| series | Physics Access |
| spelling | doaj.art-7eeb057dbbf6475697476f1d7c2f1de82023-02-02T16:20:55ZengDepartment of Physics, Kaduna State University, NigeriaPhysics Access2714-500X2756-38982022-11-0123 (SP/ISS/2022/01)172910.47514/phyaccess.sp.iss.2022.1.004Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic ApplicationsYunana Tanko0Haruna Ali1Muhammad Y Onimisi2Department of Physics, Kaduna State college of Education Gidan Waya, Kaduna, NigeriaDepartment of Physics, Nigerian Defence Academy, Kaduna, NigeriaDepartment of Physics, Nigerian Defence Academy, Kaduna, NigeriaIn this study, a natural mineral termed hydroxyapatite (HA) (Ca10(PO4)6(OH)2) was produced with TiO2 stoichiometrically by normal sol-gel process. An investigation on how the different percentage weights of HA on TiO2 can affect its optical and morphological properties was carried out, while the morphological nature and elemental composition were verified through scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX) analysis. Consequently UV–visible spectroscopy was used to measure the absorbance data, where optical constants such as absorption coefficient, extension coefficient, refractive index, transmittance, absorbance, thermal conductivity, the electron-phonon interaction and steepness parameter were evaluated. According to the optical examination, the transmittance in the visible range is between (400 and 800 nm), and the absorption response in the UV region is between (200 and 400 nm) with an absorption edge occurring between (650 and 950 nm). The value of the absorption coefficient (α) and extension coefficient (k) of HA/TiO2 increased with an increase in the percentage weight (wt%) of HA. Equally, the optical conductivity increases with an increase in photon energy. In addition, the band gap energy decreases as the percentage weight of HA increases.https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_37.pdfhydroxyapatitetitanium dioxideoptical band gapsteepnessnanoparticlesphonon |
| spellingShingle | Yunana Tanko Haruna Ali Muhammad Y Onimisi Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications Physics Access hydroxyapatite titanium dioxide optical band gap steepness nanoparticles phonon |
| title | Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications |
| title_full | Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications |
| title_fullStr | Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications |
| title_full_unstemmed | Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications |
| title_short | Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic Applications |
| title_sort | optical and morphological study of hydroxyapatite on titanium dioxide particles for photovoltaic applications |
| topic | hydroxyapatite titanium dioxide optical band gap steepness nanoparticles phonon |
| url | https://physicsaccess.com/articles/published/PA-JPET-SPECIAL_37.pdf |
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