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Enhanced Photocatalytic Degradation Activity of 2-D Graphitic Carbon Nitride-SnO₂ Nanohybrids.
Journal of Nanoscience and Nanotechnology 2019 June 2
In this paper, we report on the facile synthesis of graphitic carbon nitride (g-C₃N₄)-tin oxide (SnO₂) nanohybrid as an efficient photocatalyst prepared via sol-gel method. SnO₂ nanoparticles are pointcontacted with g-C₃N₄. The results of physio-chemical characterizations such as SEM-EDAX, XRD, BET, FT-IR and UV-DRS spectra reveal the successful formation and integration of nanohybrid. The photocatalytic activity has been studied by using methylene-blue as a model dye for degradation. It has been observed that the pseudo-first order rate constant was increased up to 1.78 times compared with pure SnO₂. The enhanced photocatalytic activity was ascribed from the inhibition of electron-hole recombination where g-C₃N₄ nanosheets acts as an electron receiver from SnO₂ via point contact. This mechanism is further verified via photoluminescence spectra. Our results prominently show new insights and potential applications of g-C₃N₄-SnO₂ nanohybrids in the waste water treatment and environmental remediation sectors.
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