Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation
Pt-TiO2 and Au-TiO2 photocatalysts were prepared by noble metalphotodeposition on sulfated TiO2. It was observed that optical absorption, oxidation state andparticle size of the metallic species (Pt or Au) play an important role in the TiO2 photocatalyticactivity under visible-light irradiation. Pho...
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2017-06-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
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| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/327001 |
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| author | Jairo Antonio Cubillos-Lobo Julie Joseane Murcia-Mesa Jhonatan Ricardo Guarín-Romero Hugo Alfonso Rojas-Sarmiento María del Carmen Hidalgo-López José Antonio Navío-Santos |
| author_facet | Jairo Antonio Cubillos-Lobo Julie Joseane Murcia-Mesa Jhonatan Ricardo Guarín-Romero Hugo Alfonso Rojas-Sarmiento María del Carmen Hidalgo-López José Antonio Navío-Santos |
| author_sort | Jairo Antonio Cubillos-Lobo |
| collection | DOAJ |
| description | Pt-TiO2 and Au-TiO2 photocatalysts were prepared by noble metalphotodeposition on sulfated TiO2. It was observed that optical absorption, oxidation state andparticle size of the metallic species (Pt or Au) play an important role in the TiO2 photocatalyticactivity under visible-light irradiation. Photocatalytic activity of the bare TiO2 powder in thephenol and methyl orange degradation increased with the sulfation and metal addition.The highest degradation rate under UV-Visible and visible light irradiation was obtained onPt-S-TiO2 photocatalyst; this is mainly due to the optical properties of TiO2 induced byplatinization and also to the good distribution and low Pt particles size. It was also found thatthis catalyst has a good stability after two cycles of reaction in the phenol photodegradationunder UV-Visible light irradiation. The Pt-S-TiO2 photocatalyst was also active under solarlight and under the environmental conditions of the city of Tunja (Boyacá), Colombia.
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| first_indexed | 2024-04-09T22:09:35Z |
| format | Article |
| id | doaj.art-6aec6bf2e0804e3ead48cf9b7d9107d5 |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-04-09T22:09:35Z |
| publishDate | 2017-06-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-6aec6bf2e0804e3ead48cf9b7d9107d52023-03-23T12:29:40ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442017-06-018310.17533/udea.redin.n83a03Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradationJairo Antonio Cubillos-Lobo0Julie Joseane Murcia-Mesa1Jhonatan Ricardo Guarín-Romero2Hugo Alfonso Rojas-Sarmiento3María del Carmen Hidalgo-López4José Antonio Navío-Santos5Pedagogical and Technological University of ColombiaPedagogical and Technological University of ColombiaPedagogical and Technological University of ColombiaPedagogical and Technological University of ColombiaUniversity of SevilleUniversity of SevillePt-TiO2 and Au-TiO2 photocatalysts were prepared by noble metalphotodeposition on sulfated TiO2. It was observed that optical absorption, oxidation state andparticle size of the metallic species (Pt or Au) play an important role in the TiO2 photocatalyticactivity under visible-light irradiation. Photocatalytic activity of the bare TiO2 powder in thephenol and methyl orange degradation increased with the sulfation and metal addition.The highest degradation rate under UV-Visible and visible light irradiation was obtained onPt-S-TiO2 photocatalyst; this is mainly due to the optical properties of TiO2 induced byplatinization and also to the good distribution and low Pt particles size. It was also found thatthis catalyst has a good stability after two cycles of reaction in the phenol photodegradationunder UV-Visible light irradiation. The Pt-S-TiO2 photocatalyst was also active under solarlight and under the environmental conditions of the city of Tunja (Boyacá), Colombia. https://revistas.udea.edu.co/index.php/ingenieria/article/view/327001Pt-S-TiO2 Au-S-TiO2UV-Visiblevisible lightpollutants photodegradation |
| spellingShingle | Jairo Antonio Cubillos-Lobo Julie Joseane Murcia-Mesa Jhonatan Ricardo Guarín-Romero Hugo Alfonso Rojas-Sarmiento María del Carmen Hidalgo-López José Antonio Navío-Santos Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation Revista Facultad de Ingeniería Universidad de Antioquia Pt-S-TiO2 Au-S-TiO2 UV-Visible visible light pollutants photodegradation |
| title | Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation |
| title_full | Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation |
| title_fullStr | Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation |
| title_full_unstemmed | Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation |
| title_short | Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation |
| title_sort | study of the visible light activity of pt and au tio2 photocatalysts in organic pollutants degradation |
| topic | Pt-S-TiO2 Au-S-TiO2 UV-Visible visible light pollutants photodegradation |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/327001 |
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