Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation
New visible light driven photocatalysts of 1 mol% Cr doped TiO2 supported on TUD-1 have been successfully synthesized. The Cr-TiO2/xTUD-1 (x = 10, 20, 30, 40 and 50) photocatalysts were prepared via surfactant-free sol-gel method followed by wet impregnation procedures. XRD analysis revealed that bo...
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| Format: | Article |
| Language: | English |
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Penerbit UTM
2014
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| Online Access: | http://eprints.utm.my/52256/1/OoiYeeKhai2014_CrdopedTiO2supported.pdf |
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| author | Khai, Ooi Yee Yuliati, Leny Lee, Siew Ling |
| author_facet | Khai, Ooi Yee Yuliati, Leny Lee, Siew Ling |
| author_sort | Khai, Ooi Yee |
| collection | ePrints |
| description | New visible light driven photocatalysts of 1 mol% Cr doped TiO2 supported on TUD-1 have been successfully synthesized. The Cr-TiO2/xTUD-1 (x = 10, 20, 30, 40 and 50) photocatalysts were prepared via surfactant-free sol-gel method followed by wet impregnation procedures. XRD analysis revealed that both TiO2 and Cr were incorporated in the highly porous siliceous matrix. FTIR analysis showed the existence of Si-O-Ti in all the materials. As observed, tetrahedral-coordinated Ti species were dominant in Cr-TiO2/10TUD-1, Cr-TiO2/20TUD-1 and Cr-TiO2/30TUD-1. Meanwhile, octahedral- coordinated Ti species were the dominant species in Cr-TiO2/40TUD-1 and Cr-TiO2/50TUD-1. It has been demonstrated that the amount of TUD-1 as photocatalyst support affected the wavelength response and the bandgap energy of the resulting materials. All the materials have bandgap energy of ~2.9 eV. The photocatalytic performance of the synthesized materials was tested out in dye photodegradation under visible light irradiation at 298 K for 5 hours. Results showed that all Cr-TiO2/TUD-1 materials had higher photocatalytic activity than that of Cr-TiO2. This could be explained by the high surface area and porosity provided by TUD-1 in enhancing the adsorption and diffusivities of the dye molecules, hence leading to the promising photocatalytic activity. Among the materials prepared, Cr-TiO2/30TUD-1 appeared as the most superior photocatalyst which gave the highest dye photodegradation |
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| format | Article |
| id | utm.eprints-52256 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T19:31:34Z |
| publishDate | 2014 |
| publisher | Penerbit UTM |
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| spelling | utm.eprints-522562018-09-17T04:01:23Z http://eprints.utm.my/52256/ Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation Khai, Ooi Yee Yuliati, Leny Lee, Siew Ling Q Science New visible light driven photocatalysts of 1 mol% Cr doped TiO2 supported on TUD-1 have been successfully synthesized. The Cr-TiO2/xTUD-1 (x = 10, 20, 30, 40 and 50) photocatalysts were prepared via surfactant-free sol-gel method followed by wet impregnation procedures. XRD analysis revealed that both TiO2 and Cr were incorporated in the highly porous siliceous matrix. FTIR analysis showed the existence of Si-O-Ti in all the materials. As observed, tetrahedral-coordinated Ti species were dominant in Cr-TiO2/10TUD-1, Cr-TiO2/20TUD-1 and Cr-TiO2/30TUD-1. Meanwhile, octahedral- coordinated Ti species were the dominant species in Cr-TiO2/40TUD-1 and Cr-TiO2/50TUD-1. It has been demonstrated that the amount of TUD-1 as photocatalyst support affected the wavelength response and the bandgap energy of the resulting materials. All the materials have bandgap energy of ~2.9 eV. The photocatalytic performance of the synthesized materials was tested out in dye photodegradation under visible light irradiation at 298 K for 5 hours. Results showed that all Cr-TiO2/TUD-1 materials had higher photocatalytic activity than that of Cr-TiO2. This could be explained by the high surface area and porosity provided by TUD-1 in enhancing the adsorption and diffusivities of the dye molecules, hence leading to the promising photocatalytic activity. Among the materials prepared, Cr-TiO2/30TUD-1 appeared as the most superior photocatalyst which gave the highest dye photodegradation Penerbit UTM 2014 Article PeerReviewed application/pdf en http://eprints.utm.my/52256/1/OoiYeeKhai2014_CrdopedTiO2supported.pdf Khai, Ooi Yee and Yuliati, Leny and Lee, Siew Ling (2014) Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation. Jurnal Teknologi (Sciences and Engineering), 69 (5). pp. 81-86. ISSN 0127-9696 http://dx.doi.org/10.11113/jt.v69.3209 DOI: 10.11113/jt.v69.3209 |
| spellingShingle | Q Science Khai, Ooi Yee Yuliati, Leny Lee, Siew Ling Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title | Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title_full | Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title_fullStr | Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title_full_unstemmed | Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title_short | Cr doped TiO2 supported on TUD-1 photocatalyst for dye photodegradation |
| title_sort | cr doped tio2 supported on tud 1 photocatalyst for dye photodegradation |
| topic | Q Science |
| url | http://eprints.utm.my/52256/1/OoiYeeKhai2014_CrdopedTiO2supported.pdf |
| work_keys_str_mv | AT khaiooiyee crdopedtio2supportedontud1photocatalystfordyephotodegradation AT yuliatileny crdopedtio2supportedontud1photocatalystfordyephotodegradation AT leesiewling crdopedtio2supportedontud1photocatalystfordyephotodegradation |