Abstract
Photocatalysis based on TiO2 nanomaterials demonstrates great potential in low-concentration nitric oxide (NO) removal. The utilization of solar energy is critical for increasing the NO removal rate. Here, TiO2 photonic crystal (TiO2-PC) is synthesized for efficiently photocatalytic NO removal by improving the utilization of sunlight in the visible region. Under solar irradiation, the transient photocurrent response and NO removal ratio of TiO2-PC is ∼2.3 times and about double that of pristine TiO2-film. The slow photon effect, as verified by reflection and absorption spectra. This work provides a promising approach to fabricating TiO2-based photocatalysts for highly efficient NO removal.
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