Enhanced solar-driven photocatalytic performance of a ternary composite of SnO2 quantum dots//AgVO3 nanoribbons//g-C3N4 nanosheets (0D/1D/2D) structures for hydrogen production and dye degradation
2021
Koyyada, Ganesh | Siva Kumar, Nadavala | Al-Ghurabi, Ebrahim H. | Asif, Mohammad | Mallikarjuna, Koduru
Herein, we report the synthesis of between SnO₂ QDs /AgVO₃ nanoribbons/g-C₃N₄ nanosheets of ternary photocatalytic systems for the production of H₂ through light irradiation. The SnO₂/AgVO₃/g-C₃N₄ photocatalyst was successfully produced by using the hydrothermal process. The structural characterizations of the samples revealed the successful formation of ternary heterostructures where SnO₂, AgVO₃ and g-C₃N₄ (quantum dots/nanoribbons/nanosheets) 0D/1D/2D structures make a good interface with each other. The fabricated heterostructures of AgVO₃/g-C₃N₄ and SnO₂/AgVO₃/g-C₃N₄ photocatalytic structures performed enriched photocatalytic performance for H₂ production over that of the pristine g-C₃N₄, AgVO₃ and SnO₂ photocatalysts. The AgVO₃/g-C₃N₄ and SnO₂ /AgVO₃/g-C₃N₄ of photocatalysts were found to produce H₂ of around 17,000 μmol g⁻¹ and 77,000 μmol g⁻¹, respectively, which is much 4.5 times greater than that of AgVO₃/g-C₃N₄ photocatalyst. Moreover, the photodegradation behaviours of prepared catalysts were studied with the dye (rhodamine B, RhB) under light irradiation. The ternary composite SnO₂/AgVO₃/g-C₃N₄ performed photodegradation of RhB in 50 min. The higher photocatalytic activity for the ternary photocatalysts is predominantly due to the effective charge separation at the perfect interface formation amid SnO₂ and AgVO₃/g-C₃N₄.
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