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- W2993507967 endingPage "112289" @default.
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- W2993507967 abstract "Abstract Synthesis of a composite photocatalyst is a good approach to utilize higher portion of solar spectrum and improves separation of electron-hole pairs. Herein, a novel Bi2O3/porous g-C3N4 synthesized using impregnation method showed dramatic photo-activity improvement under irradiation of UV–vis light. Further characterization by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively-coupled plasma atomic emission spectroscopy (ICP-AES), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) proved the existence of both g-C3N4 and Bi2O3 in which Bi2O3 particles are decorated on porous g-C3N4 sheets. Photocatalytic activity test of Bi2O3/porous g-C3N4 composites shows that 9 wt% Bi2O3/porous g-C3N4 is the best photocatalyst with 84 % of Reactive Black 5 (RB 5) degradation under 120 min of UV–vis light. It was confirmed that the photocatalytic activity improvement are due to the reduction of electron-hole recombination and wider absorption of light which were proven using photoluminescence (PL) and UV–vis diffuse reflectance spectroscopy (DRS), while surface area plays an insignificant role in the photocatalytic performance. In addition, process parameters studies concluded that 9 wt% Bi2O3/porous g-C3N4 worked best in RB 5 with concentration of 10 ppm, pH 5.7 and by using 1 g/L photocatalyst loading. From radicals quenching test, superoxide radical (O2•−) was found to be the most active radical which mineralizes RB 5 by following the mechanism of direct Z-scheme pathway. Lastly, 9 wt% Bi2O3/porous g-C3N4 is stable and preserved its photocatalytic activity up to three times for degradation of RB 5." @default.
- W2993507967 created "2019-12-13" @default.
- W2993507967 creator A5006651256 @default.
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- W2993507967 creator A5075510183 @default.
- W2993507967 date "2020-02-01" @default.
- W2993507967 modified "2023-09-29" @default.
- W2993507967 title "Bi2O3 particles decorated on porous g-C3N4 sheets: Enhanced photocatalytic activity through a direct Z-scheme mechanism for degradation of Reactive Black 5 under UV–vis light" @default.
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- W2993507967 doi "https://doi.org/10.1016/j.jphotochem.2019.112289" @default.
- W2993507967 hasPublicationYear "2020" @default.
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