| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000460846 |
| ISSN: | 0035-001X |
| Authors: | Hernández Carabalí, L.A1 Cedeño, E1 Rojas Trigos, J.B1 Alvarado, S1 Mansanares, A.M2 Isidro Ojeda, M.A1 Vargas, E1 Calderón, A1 Marín, E1 |
| Institutions: | 1Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Ciudad de México. México 2Universidade Estadual de Campinas, Instituto de Fisica "Gleb Wataghin", Campinas, Sao Paulo. Brasil |
| Year: | 2022 |
| Season: | Mar-Abr |
| Volumen: | 68 |
| Number: | 2 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| English abstract | We compare the thermal lens (TLS) and the optical transmission (OT) spectroscopy techniques to monitor the kinetic of a photocatalytic reaction. For this, an OT measurement facility was added to a TLS set-up. The TLS was implemented in a microspatial configuration named thermal lens microscopy (TLM). Methylene blue (MB) in Water solutions were used as test samples within a concentration range in which both techniques show good sensitivity. Within this range, the limit of detection obtained by TLM was about one order of magnitude smaller than that achieved by OT. The methylene blue concentration evolution with photocatalytic reaction time was measured with both techniques, showing a good agreement between their results. A ZnO thin film deposited on a glass substrate by the spray pyrolysis technique was used as catalyst, and the reaction was induced by UV-violet light |
| Disciplines: | Física y astronomía |
| Keyword: | Optica, Microscopía de lente térmica, Absorción óptica, Fotocatálisis, Espectroscopía |
| Keyword: | Optics, Thermal lens microscopy, Optical absorption, Photocatalysis, Spectroscopy |
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