TiO2 Inverse Opals Modified by Ag Nanoparticles: A Synergic Effect of Enhanced Visible-Light Absorption and Efficient Charge Separation for Visible-Light Photocatalysis
نویسندگان
چکیده
This work reports on the synthesis, characterization, and photocatalytic performance of TiO2 inverse opal nanostructure (IP-TiO2) IP-TiO2 modified by Ag nanoparticles (Ag@IP-TiO2). The is fabricated using polystyrene spheres as template TiCl4 precursor, Ag@IP-TiO2 realized photoreduction method. morphological, structural, optical properties materials are investigated scanning electron microscopy, X-ray diffraction, ultraviolet–visible (UV-VIS) absorption spectroscopy, photoluminescence spectroscopy. Their performances studied degradation rifampicin antibiotic under visible-light irradiation generated an LED lamp. results demonstrate that composed mesopores arranged in honeycomb structure strongly absorbs visible light wavelength range 400–500 nm. facilitates catalytic activity IP-TiO2, which further enhanced surface modification nanoparticles. Our studies UV-VIS photoluminescent reveal presence not only enhances but also reduces recombination photogenerated electrons holes. These two factors create a synergic effect causes Ag@IP-TiO2.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2021
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal11070761