Synthesis and characterization of gold nanoparticles on titanium dioxide for the catalytic photodegradation of 2,4-dichlorophenoxyacetic acid
| Autor: | V Mugica Alvarez, C. Tzompantzi Flores, L. González Reyes, M. Torres Rodríguez, M. Gutierrez Arzaluz, E. Romero Torres, F.J. Tzompantzi Morales |
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| Rok vydání: | 2018 |
| Předmět: |
Anatase
Materials science 010405 organic chemistry General Engineering Nanoparticle 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Colloidal gold Transmission electron microscopy Titanium dioxide Particle size Photodegradation Nuclear chemistry |
| Zdroj: | Journal of Applied Research and Technology. 16 |
| ISSN: | 2448-6736 1665-6423 |
| DOI: | 10.22201/icat.16656423.2018.16.5.734 |
| Popis: | The photocatalytic degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) using a Au/TiO2 catalyst and ultraviolet (UV) light energy source (9 mW/cm2) discussed. Gold nanoparticles were synthesized by controlled urea reduction and deposited on titanium dioxide (TiO2) by the deposition-precipitation method. The average size of the nanoparticles was 6-8 nm. X-ray diffraction (XRD) characterization confirmed that TiO2 was present in the anatase phase, whereas the presence and particle size of gold were determined by transmission electron microscopy (TEM). The results of the degradation showed that the activity of TiO2 was improved when Au nanoparticles were present on the surface. The reactions were performed at atmospheric pressure and room temperature. |
| Databáze: | OpenAIRE |
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