Angle dependence in slow photon photocatalysis using TiO 2 inverse opals
| Autor: | Mariano Curti, Gonzalo Zvitco, Cecilia B. Mendive, María A. Grela |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
PHOTONIC PHOTOCATALYSIS
Photon RCWA METHOD Físico-Química Ciencia de los Polímeros Electroquímica Analytical chemistry General Physics and Astronomy Inverse ADVANCED OXIDATION PROCESSES 02 engineering and technology Stopband 010402 general chemistry 01 natural sciences Spectral line Reaction rate Irradiation Physical and Theoretical Chemistry Absorption (electromagnetic radiation) Chemistry Ciencias Químicas 021001 nanoscience & nanotechnology 0104 chemical sciences SLOW PHOTONS Photocatalysis TIO2 0210 nano-technology INVERSE OPALS CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Chemical Physics. 502:33-38 |
| ISSN: | 0301-0104 |
| Popis: | The slow photon effect was studied by means of the photocatalytic degradation of stearic acid over TiO2 inverse opals. The comparison of the degradation rates over inverse opals with those obtained over disordered structures at different irradiation angles showed that the irradiation at the blue edge of the stopband leads to the activation of the effect, evidenced by an improvement factor of 1.8 ± 0.6 in the reaction rate for irradiation at 40°. The rigorous coupled-wave analysis (RCWA) method was employed to confirm the source of the enhancement; simulated spectra showed an enhancement in the absorption of the TiO2 matrix that composes the inverse opal at a 40° irradiation angle, owing to an appropriate position of the stopband in relation to the absorption onset of TiO2. Fil: Curti, Mariano. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina Fil: Zvitco, Gonzalo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina Fil: Grela, Maria Alejandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina Fil: Mendive, Cecilia Beatriz. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect