1. 92.58 % efficiency of solar-driven degradation of tetracycline solution by Pt/WO3 nanohybrid.
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Nam Anh, Tran, Thi Hien, Nguyen, Tan Tran, Van, Thi Hai Linh, Dang, Thi Hanh, Nguyen, Thi Do, Lien, Hung Vu, Ngoc, Minh Hoang, Nguyen, Viet Quang, Dang, and Dao, Van-Duong
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TETRACYCLINE , *TETRACYCLINES , *PHOTOCATALYSIS , *HYDROXYL group , *VISIBLE spectra - Abstract
[Display omitted] • Pt/WO 3 was synthesized by dry plasma reduction. • 92.8 % removal efficiency of tetracycline under 1 kW/m2 was obtained. • The mineralization and possible degradation pathways of tetracycline are studied. • Tetracycline degradation kinetics are investigated. By using the dry plasma reduction method, Pt nanoparticles were successfully immobilized into WO 3 to fabricate a Pt/WO 3 composite catalyst and its application as an efficient photocatalysis in solar-driven degradation of Tetracycline (TTC). As a result, Pt nanoparticles (∼5nm) are uniform and well-distributed on the surface of WO 3. The bandgap of Pt/WO 3 is slightly lower than that of WO 3. The optimized TTC degradation efficiency reached 76.62 % and 92.58 % under visible light and 1-sun irradiation, respectively. The mineralization study further proved that at the optimum operational parameters, only 53.68 % and 71.38 % of TTC compounds were decomposed completely into inorganic ones under compact light and 1-sun irradiation, respectively. The transformation process of TTC showed that holes and hydroxyl radicals are the main agents for TTC degradation. The removal percentage declined by 6 % after seven consecutive cycles, showing high reusability, full-scale, and practical application of Pt/WO 3 material in organic compound treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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