Study of the visible light activity of Pt and Au-TiO2 photocatalysts in organic pollutants degradation
| Autor: | Hugo Alfonso Rojas-Sarmiento, María del Carmen Hidalgo-López, José Antonio Navío-Santos, Jhonatan Ricardo Guarín-Romero, Jairo Antonio Cubillos-Lobo, Julie Joseane Murcia-Mesa |
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| Přispěvatelé: | Universidad de Antioquia, Universidad de Sevilla. Departamento de Química Inorgánica, Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación. Argentina, Ministerio de Economía y Competitividad (MINECO). España |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Materials science Pt-S-TiO2 Au-S-TiO2 UV-Visible luz visible degradación de contaminantes pt Nanotechnology Photochemistry lcsh:Technology Catalysis Metal 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Oxidation state Methyl orange Phenol Irradiation Visible light lcsh:T Pollutants photodegradation General Engineering technology industry and agriculture tio2 Pt-S-TiO2 luz visible visible uv 030104 developmental biology chemistry UVVisible lcsh:TA1-2040 visual_art Photocatalysis visual_art.visual_art_medium au degradación de contaminantes Pt-S-TiO2 Au-S-TiO2 UVVisible visible light pollutants photodegradation Au-S-TiO2 lcsh:Engineering (General). Civil engineering (General) 030217 neurology & neurosurgery Visible spectrum |
| Zdroj: | Revista Facultad de Ingeniería, Iss 83, Pp 20-30 (2017) Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Pt-TiO and Au-TiO photocatalysts were prepared by noble metal photodeposition on sulfated TiO. It was observed that optical absorption, oxidation state and particle size of the metallic species (Pt or Au) play an important role in the TiO photocatalytic activity under visible-light irradiation. Photocatalytic activity of the bare TiO powder in the phenol and methyl orange degradation increased with the sulfation and metal addition. The highest degradation rate under UV-Visible and visible light irradiation was obtained on Pt-S-TiO photocatalyst; this is mainly due to the optical properties of TiO induced by platinization and also to the good distribution and low Pt particles size. It was also found that this catalyst has a good stability after two cycles of reaction in the phenol photodegradation under UV-Visible light irradiation. The Pt-S-TiO photocatalyst was also active under solar light and under the environmental conditions of the city of Tunja (Boyacá), Colombia. Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación 279-2016 Ministerio de Economía y Competitividad CTQ2015-64664-C2-2-P |
| Databáze: | OpenAIRE |
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