Enhanced performance of electrospun nanofibrous tio2/g-c3n4 photocatalyst in photocatalytic degradation of methylene blue

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Abstract

TiO2/g-C3N4 (GNT) fibers with 1%, 2.5% and 5% (wt%) ratios have been synthesized via one-step electrospinning using polyvinylpyrrolidone (PVP) polymer. Results showed mesoporous fibrous catalysts consisted of anatase (80.0–85.1%) and rutile phase (14.9–20.0%), with diameter between 200–300 nm and band gap lower than 3.0 eV confirming the absorption shift to visible-light region. The formation of•OH radicals and methylene blue dye degradation increases as the g-C3N4 doping percent also increases, following the trend TiO2 < GNT1% ≈ GNT2.5% < GNT5%. A z-scheme mechanism is attributed to the photocatalytic performance confirming the potential for green chemistry and environmental technology applications.

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Bairamis, F., Konstantinou, I., Petrakis, D., & Vaimakis, T. (2019). Enhanced performance of electrospun nanofibrous tio2/g-c3n4 photocatalyst in photocatalytic degradation of methylene blue. Catalysts, 9(11). https://doi.org/10.3390/catal9110880

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