Abstract
Bentonite supported LaFeO3, an active photocatalyst nanocomposite(NC) was synthesized by citric acid assisted sol-gel method and the photocatalytic activity of synthesized NC is conversed. From the TG-DSC studies, it is prominent that the NC exhibited a little mass gain after 600 °C from which the calcination temperature for preparing NC was decided. The characterization process of photocatalysts was estimated through Fourier transform infrared (FTIR) spectroscopy, Powder x-ray diffraction (PXRD) studies and Scanning electron Microscopy (SEM). The energy band gap studies were carried out for all the synthesized samples using UV–Vis diffuse reflectance spectroscopy. The photocatalytic activities of all the synthesized samples were evaluated by degrading Methylene Blue (MB) under visible light irradiation. The synthesized LaFeO3/Bentonite (2.5) NC exhibited remarkable and excellent photocatalytic activity with the overall removal rate of MB upto 95% for 60 min. The abundant hydroxyl groups of Bentonite and the combination of photocatalytic and photo-Fenton like mechanism of LaFeO3/Bentonite (2.5) could enhance the photocatalytic degradation. Therefore, the LaFeO3/Bentonite is a very promising photocatalyst in future industrial application to treat the dye wastewater.
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