The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]
Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD...
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| Format: | Article |
| Language: | English |
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Penerbit UiTM (UiTM Press)
2016
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| Online Access: | https://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf |
| _version_ | 1825734602643210240 |
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| author | Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah |
| author_facet | Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah |
| author_sort | Suhaili, Siti Zulaikha |
| collection | UITM |
| description | Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD), field emmision (FESEM) and also UV-Vis diffuse reflectance spectroscopy (DRS).The photocatalytic activity under sunlight irradiation was demonstrated by photocatalytic decomposition of methylene blue in water using UV/Vis spectrophotometer. The XRD analysis of pure Ti0₂ and doped Ti0₂ calcined at 500°C showed a mixture of anatase and rutile phases with decreasing crystallites size from 13.3nm to 11.6nm as the concentration of Cr was increased. The anatase-rutile phase transformation increased from 28.8% to 57.4%. An indication shows that at 0.75wt%, Cr the anatase and rutile phases have equal composition percentage. This study demonstrated that band gap energy of Ti0₂ was reduced with Cr doping which could enhance the photocatalytic efficiency. Sample containing 1.0wt% exhibit the lowest optical band gap energy at 2.86 eV. The optimum chromium doping concentration was found to be at 0.1 wt% Cr corresponding to band gap energy of 2.87 eV and degradation rate of 84%. |
| first_indexed | 2024-03-06T01:34:21Z |
| format | Article |
| id | oai:ir.uitm.edu.my:16135 |
| institution | Universiti Teknologi MARA |
| language | English |
| last_indexed | 2024-03-06T01:34:21Z |
| publishDate | 2016 |
| publisher | Penerbit UiTM (UiTM Press) |
| record_format | dspace |
| spelling | oai:ir.uitm.edu.my:161352017-02-16T07:02:00Z https://ir.uitm.edu.my/id/eprint/16135/ The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] srj Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah Environmental pollution Pure Ti0₂ and Cr doped Ti0₂ (0.1-1.0wt% Cr) nanoparticles were synthesized via sol gel method. This study focuses on narrowing the Ti0₂ band gap energies in order to enhance the photocatalytic efficiency under visible light. The synthesized samples were characterized by X-Ray diffraction method (XRD), field emmision (FESEM) and also UV-Vis diffuse reflectance spectroscopy (DRS).The photocatalytic activity under sunlight irradiation was demonstrated by photocatalytic decomposition of methylene blue in water using UV/Vis spectrophotometer. The XRD analysis of pure Ti0₂ and doped Ti0₂ calcined at 500°C showed a mixture of anatase and rutile phases with decreasing crystallites size from 13.3nm to 11.6nm as the concentration of Cr was increased. The anatase-rutile phase transformation increased from 28.8% to 57.4%. An indication shows that at 0.75wt%, Cr the anatase and rutile phases have equal composition percentage. This study demonstrated that band gap energy of Ti0₂ was reduced with Cr doping which could enhance the photocatalytic efficiency. Sample containing 1.0wt% exhibit the lowest optical band gap energy at 2.86 eV. The optimum chromium doping concentration was found to be at 0.1 wt% Cr corresponding to band gap energy of 2.87 eV and degradation rate of 84%. Penerbit UiTM (UiTM Press) 2016 Article PeerReviewed text en https://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.]. (2016) Scientific Research Journal <https://ir.uitm.edu.my/view/publication/Scientific_Research_Journal/>, 13 (1). pp. 100-114. ISSN 1675-7009 https://srj.uitm.edu.my/ |
| spellingShingle | Environmental pollution Suhaili, Siti Zulaikha Yaakob, Muhamad Kamil Saaid, Siti Irma Yuana Jais, Umi Sarah The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title | The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title_full | The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title_fullStr | The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title_full_unstemmed | The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title_short | The influence of Cr doped TiO² on the optical property and photocatalytic activity under sunlight irradiation / Siti Zulaikha Suhaili … [et al.] |
| title_sort | influence of cr doped tio² on the optical property and photocatalytic activity under sunlight irradiation siti zulaikha suhaili et al |
| topic | Environmental pollution |
| url | https://ir.uitm.edu.my/id/eprint/16135/1/AJ_SITI%20ZULAIKHA%20SUHAILI%20SRJ%2016.pdf |
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