Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 272, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2020.118251
Keywords
AgBr/beta-Ag2WO4/g-C3N4; Dual Z-scheme; Photocatalytic; Organic pollutants degradation
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Funding
- National Natural Science Foundation of China [51872141]
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In this study, AgBr/beta-Ag2WO4/g-C3N4 ternary composites with dual Z-scheme band alignment were successfully constructed for efficient degradation of colored Rhodamine B and colorless tetracycline hydrochloride. The optimized composite displayed exceptional photocatalytic activities due to the dual Z-scheme charge carrier transfer channel, offering a new perspective for effective photocatalysts in environmental remediation.
The speedy recombination of photoexcited charge carriers is one of the major reasons for the unsatisfactory of semiconductor photocatalysts. Herein, AgBr/beta-Ag2WO4/g-C3N4 ternary composites with dual Z-scheme band alignment were constructed for colored Rhodamine B and colorless tetracycline hydrochloride degradation. The crystal structure, micro-nano structure, chemical composition, optical and electrochemical properties of the obtained photocatalysts were thoroughly investigated. The optimized AgBr/beta-Ag2WO4/g-C3N4 displayed exceptional photocatalytic activities toward Rhodamine B and tetracycline hydrochloride degradation. The dramatically improved catalytic performance could be ascribed to the dual Z-scheme transfer channel of the charge carriers. It is anticipated that this work could offer a novel sight into constructing effective photocatalyst for environmental remediation.
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