C-dots dispersed macro-mesoporous TiO2 phtocatalyst for effective waste water treatment

M. Abd Elkodous, (Dr.) Ahmed Hassaan, Prof (Dr.) KAUSHIK PAL, (Dr.) A I Ghoneim, (Dr.) Zizi Abdeen


Synthesis of macro-mesoporous Titania (Titanium dioxide-TiO2) nanospheres was successfully achieved using a modified template-free methodology to incorporate macroporous channels into a mesoporous TiO2 framework to form mixed macro-mesoporous TiO2 spheres (MMPT), which were doped with carbon dots (C-dots) to form improved nanocomposites (C-dots@MMPT). Elemental composition, surface bonding and optical properties of these nanocomposites were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR) and ultraviolet-visible absorption spectroscopy (UV-VIS). Evaluation of photocatalytic activity for each (C-Dots@MMPT) sample was performed via degrading the Methylene Blue (MB) dye compared with bare samples (MMPT) under visible light irradiation using 300 Watt halogen lamp.


Photocatalysis; macro-mesoporous TiO2; up-conversion photoluminescence; MB degradation

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DOI: http://dx.doi.org/10.24294/can.v1i2.585


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