Fabrication of a Novel Z-Scheme AgBiO/BiOCl Heterojunction with Excellent Photocatalytic Performance towards Organic Pollutant.

Materials (Basel)

Laboratory of Functional Molecular and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China.

Published: September 2024

A novel and highly efficient photocatalyst of a AgBiO/BiOCl heterojunction has been developed via a facile water bath and in situ precipitation method. The photocatalytic activities of the catalysts were investigated by the degradation of ciprofloxacin (CIP) under visible-light irradiation (>420 nm). The experiment results revealed that the photocatalytic performance of the optimized AgBiO/BiOCl heterojunction was much higher than pure AgBiO and BiOCl. The degradation efficiency of the as-prepared AgBiO/BiOCl heterojunction (ABC-30) for CIP could reach 88% within 160 min, with 2.89 and 3.76 times higher activity than pure AgBiO and BiOCl, respectively. The improved photocatalytic performance of AgBiO/BiOCl was attributed to the synergistic effect of the enhanced light absorption range and effective separation and transfer of the photo-induced charge carrier. The optimized heterojunction showed broad-spectrum catalytic activities towards various organic contaminants. The degradation efficiencies varied with the nature of the pollutant and decreased in the following order: Lanasol Red 5B (100%) > methyl orange (99%) > methylene blue (98%) > tetracycline (92%) > ciprofloxacin (88%) > ofloxacin (85%) > norfloxacin (78%) > rhodamine B (59%) > metronidazole (43%) > phenol (40%) > carbamazepine (20%). Furthermore, the trapping experiments and ESR indicated that superoxide radicals and holes were the main reactive species.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11433391PMC
http://dx.doi.org/10.3390/ma17184615DOI Listing

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