Titania Enhanced Photocatalysis and Dye Giant Absorption in Nanoporous 1D Bragg Microcavities.

ABSTRACT: Light trapping effects are known to boost the photocatalytic degradation of organic molecules in 3D photonic structures of anatase titania (a-TiO₂) with an inverse opal configuration. In the present work, we show that photocatalytic activity can also be enhanced in a-TiO₂ thin films if they are incorporated within a nanoporous 1D optical resonant microcavity. We have designed and manufactured multilayer systems that, presenting a high open porosity to enable a straightforward diffusion of photodegradable molecules, provide light confinement effects at wavelengths around the absorption edge of photoactive a-TiO₂. In brief, we have observed that a nanoporous 1D Bragg microcavity prepared by electron beam evaporation at oblique angles comprising a central defe

SUBMITTER: Rico VJ 

PROVIDER: S-EPMC9040112 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature