Tailored one-dimensional porous anatase photonic crystals: Precise band gap engineering and photocatalytic performanceстатьяИсследовательская статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
Аннотация:One-dimensional photonic crystals (PhCs) based on anodic titanium oxide (ATO) exhibit a periodic modulation of porosity, enabling the formation of photonic band gaps (PBGs) that control light propagation through the structure. While ATO PhCs produced by titanium anodizing are initially amorphous, achieving crystallinity isessential for advanced applications in photocatalysis and solar energy conversion. However, the required annealing process induces an undesired shift in the PBG position. Here, we propose an anodizing regime based on voltage variation as a function of optical path length, enabling the controlled synthesis of anatase PhCs with a desired PBG position in the visible and near-infrared range with accuracy above 94 %. Furthermore, we investigate the influence of the PBG position on the photocatalytic degradation rate of methylene blue. The proposed synthesis procedure enables the fabrication of anatase PhCs with the desired PBG position and number of periods suitable for nanophotonic and photocatalytic applications.