عنوان مجله
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PROGRESS IN REACTION KINETICS AND MECHANISM
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کلیدواژهها
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Bi24Br10 + xAgxO31, wastewater, visible light, heterojunction, photodegradation
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چکیده
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Bi24Br10 + xAgxO31 nanosheets were prepared by a facile single-step co-precipitation method in
the presence of 1-butyl-3-methylimidazolium bromide ionic liquid as the bromide source and
template agent. The products were well characterized by X-ray powder diffraction, scanning
electron microscopy, energy-dispersive X-ray analysis, diffuse reflectance spectroscopy, nitrogen
adsorption–desorption isotherms using Brunauer–Emmett–Teller analysis, Fourier transform
infrared spectroscopy and transmission electron microscopy. The X-ray powder diffraction
pattern confirmed the presence of both Bi24O31Br10 and AgBr crystalline phases in the structure.
In addition, the scanning electron microscopy micrographs and transmission electron microscopy
image indicated that the sample had sheet-like morphology and the thickness of the sheets was
below 100 nm. According to the photocatalytic experiments, the product was exceptionally
efficient for the degradation of Acid Blue 92 solutions under visible light. Also, the results of
recycling experiments indicated the high capacity of the prepared nanosheets to effect repeated
treatment of the wastewater solution, which is of great importance in being introduced as a
catalyst in practical applications.
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