AI Article Synopsis
- A new photocatalyst, BiOBr/BiYWO, was created using a one-pot hydrothermal method by varying KBr amounts (0.5 to 2.0 mmol) to improve its effectiveness under visible light.
- The best-performing catalyst, made with 1.5 mmol of KBr, achieved a decomposition efficiency of 78.3% for methylene blue, with a low bandgap of 2.51 eV and better photoluminescence compared to others studied.
- The catalyst exhibited stability and reusability over four cycles, highlighting its robust performance, and a proposed mechanism for methylene blue decomposition under light was also suggested.
Article Abstract
A visible light driven BiOBr/BiYWO nanocomposite photocatalyst of various compositions are prepared by the addition of different amounts of KBr (0.5, 1.0, 1.5, 2.0 mmol) in BiYWO by a one-pot hydrothermal method. Furthermore, the photocatalytic properties of the as-prepared materials are analyzed by the decomposition of methylene blue under visible light illumination. In particular, the BiOBr/BiYWO nanocomposite prepared by taking 1.5 mmol of KBr present a superior photocatalytic ability (78.3%) with the rate constant value 0.016 min, a low bandgap (E = 2.51 eV) as well as photoluminescence emission intensity than other photocatalysts prepared in this study. The radical scavenging studies revealed that OH and h performed an imperative role in the decomposition of methylene blue. Furthermore, the optimized photocatalyst is stable even after four cycles, which exposes the excellent photostability and reusability properties of the photocatalyst. In addition, a plausible mechanism of decomposition of methylene blue under visible light irradiation is also proposed.
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| http://dx.doi.org/10.1016/j.chemosphere.2022.133993 | DOI Listing |
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