Preparation of cerium oxide nanoparticles in Salvia Macrosiphon Boiss seeds extract and investigation of their photo-catalytic activities
| Autor: | Majid Darroudi, Behrouz Elahi, Mohammad Sadegh Amiri, Reza Kazemi Oskuee, Kayvan Sadri, Mahdi Mirzaee |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Cerium oxide Materials science biology Process Chemistry and Technology Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Cerium nitrate chemistry.chemical_compound chemistry 0103 physical sciences Materials Chemistry Ceramics and Composites Zeta potential Rhodamine B Particle size Fourier transform infrared spectroscopy 0210 nano-technology Salvia macrosiphon Nuclear chemistry |
| Zdroj: | Ceramics International. 45:4790-4797 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2018.11.173 |
| Popis: | Cerium oxide nanoparticles (CNPs) with desired particle size and spherical morphology were prepared from cerium nitrate in bio media of Salvia macrosiphon Boiss seeds extract, as a green synthesis route. Then they were characterized by XRD, UV–Vis and FTIR spectroscopies, FESEM and TGA. Band gap energy of the prepared powders was also determined which was found in the range of 2.5–3.5 eV. Determination of DLS and zeta potential were showed that CNPs had the small size and unique colloidal stability, respectively. Then the photo-catalytic activity of them was investigated by degradation of Rhodamine B (RhB) dye as a model of waste water pollutants, under UV-irradiation and optimum conditions were evaluated. Results showed that decreasing the particle size increased the rate of photo-catalytic reaction remarkably but ascending the band gap energy, in contrast. The photo-catalytic mechanism was also studied by using different scavengers. |
| Databáze: | OpenAIRE |
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