Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via HydrothermalMethod
TiO2 nanopowder, loaded with SiO2 and Cu-SiO2, was prepared under both acidic and basic environments via the hydrothermal method. The morphology and structure of TiO2 were studied by XRD, TEM, and FT-IR. The photocatalytic activity of samples was studied by monitoring the degradation of methyl ora...
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| Language: | en |
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Hindawi Publishing Corporation
2011
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| Online Access: | http://eprints.usm.my/38430/1/Characterization_and_Photocatalytic_Activity_of_Enhanced_Copper-Silica-Loaded.pdf http://eprints.usm.my/38430/ https://doi.org/10.1155/2011/239289 |
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| author | Poliah, Ramarao Sreekantan, Srimala |
| author_facet | Poliah, Ramarao Sreekantan, Srimala |
| author_sort | Poliah, Ramarao |
| building | Hamzah Sendut Library |
| collection | Institutional Repository |
| content_provider | Universiti Sains Malaysia |
| content_source | USM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | TiO2 nanopowder, loaded with SiO2 and Cu-SiO2, was prepared under both acidic and basic environments via the hydrothermal
method. The morphology and structure of TiO2 were studied by XRD, TEM, and FT-IR. The photocatalytic activity of samples was
studied by monitoring the degradation of methyl orange, using a UV-visible spectrophotometer. The effect of Ti/Si ratio, pH, and
Cu2+ addition on the formation of TiO2 and its photocatalytic activity was investigated in detail. The results show that a large surface
area and a high surface acidity were important factors to achieve good TiO2 performance. The presence of Ti-O-Si bonding enhanced
surface acidity, which improved its ability to adsorb more hydroxyl radicals and increased its surface area. The addition of
0.1mol% concentration of Cu2+ and 25mol% SiO2 in TiO2 induced the formation of new states close to the conduction band,
which narrowed the band gap energy and enhanced the photodegradation efficiency. |
| format | Article |
| id | my.usm.eprints.38430 |
| institution | Universiti Sains Malaysia |
| language | en |
| publishDate | 2011 |
| publisher | Hindawi Publishing Corporation |
| record_format | eprints |
| spelling | my.usm.eprints.38430 http://eprints.usm.my/38430/ Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via HydrothermalMethod Poliah, Ramarao Sreekantan, Srimala TN1-997 Mining engineering. Metallurgy TiO2 nanopowder, loaded with SiO2 and Cu-SiO2, was prepared under both acidic and basic environments via the hydrothermal method. The morphology and structure of TiO2 were studied by XRD, TEM, and FT-IR. The photocatalytic activity of samples was studied by monitoring the degradation of methyl orange, using a UV-visible spectrophotometer. The effect of Ti/Si ratio, pH, and Cu2+ addition on the formation of TiO2 and its photocatalytic activity was investigated in detail. The results show that a large surface area and a high surface acidity were important factors to achieve good TiO2 performance. The presence of Ti-O-Si bonding enhanced surface acidity, which improved its ability to adsorb more hydroxyl radicals and increased its surface area. The addition of 0.1mol% concentration of Cu2+ and 25mol% SiO2 in TiO2 induced the formation of new states close to the conduction band, which narrowed the band gap energy and enhanced the photodegradation efficiency. Hindawi Publishing Corporation 2011 Article PeerReviewed application/pdf en http://eprints.usm.my/38430/1/Characterization_and_Photocatalytic_Activity_of_Enhanced_Copper-Silica-Loaded.pdf Poliah, Ramarao and Sreekantan, Srimala (2011) Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via HydrothermalMethod. Journal of Nanomaterials, 2011 (239289). pp. 1-8. ISSN 1687-4110 https://doi.org/10.1155/2011/239289 |
| spellingShingle | TN1-997 Mining engineering. Metallurgy Poliah, Ramarao Sreekantan, Srimala Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via HydrothermalMethod |
| title | Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via
HydrothermalMethod |
| title_full | Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via
HydrothermalMethod |
| title_fullStr | Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via
HydrothermalMethod |
| title_full_unstemmed | Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via
HydrothermalMethod |
| title_short | Characterization and Photocatalytic Activity of Enhanced Copper-Silica-Loaded Titania Prepared via
HydrothermalMethod |
| title_sort | characterization and photocatalytic activity of enhanced copper-silica-loaded titania prepared via
hydrothermalmethod |
| topic | TN1-997 Mining engineering. Metallurgy |
| url | http://eprints.usm.my/38430/1/Characterization_and_Photocatalytic_Activity_of_Enhanced_Copper-Silica-Loaded.pdf http://eprints.usm.my/38430/ https://doi.org/10.1155/2011/239289 |
| url_provider | http://eprints.usm.my/ |