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A Novel approach for synthesis of LaFeO3/Bentonite Nanocomposite for degradation of methylene blue with enhanced photocatalytic activity” for publication in your esteemed Journal “Materials research express
摘要： Bentonite supported LaFeO3, an active photo catalyst 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 after600°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 upto95% 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.
关键词： Methylene blue,phototocatalytic,Nanocomposite,Photo-Fenton
更新于2025-09-09 09:28:46
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One-Pot Synthesis of Magnesium Aminoclay–Iron Oxide Nanocomposites for Improved Photo-Fenton Catalytic Performance
摘要： Fe3O4 nanoparticles (NPs) have been widely used in photo-Fenton catalysis applications for water/waste water treatment. Their drawbacks, however, continue to limit their potential. In the present study, we synthesized magnesium aminoclay–iron oxide [MgAC–Fe3O4] nanocomposites in DI water solution by treated them under 4% H2/Ar for 3 hours in a 500 (cid:3)C furnace. Obtained X-ray diffraction (XRD) patterns con?rmed that the growth of the Fe3O4 NPs in the amorphous MgAC; also, scanning electron microscopy (SEM) images indicated that the MgAC–Fe3O4 nanocomposites were in an aggregated form of 170 ± 117 nm average-diameter. MgAC[0.7 g]–Fe3O4 nanocomposite exhibited the best photo-Fenton catalysis with methylene blue (MB) was completely removed from the treatment solution at a constant rate of 0.0083 (min?1(cid:2) on the batch scale. This performance was 13.83 times better than that of commercial Fe3O4. On the pilot scale (100 L), MgAC[0.7 g]–Fe3O4 nanocomposite took 12 hours to completely removed MB from tap water. The mechanism of the high photo-Fenton catalysis was attributed to the higher rate adsorption of MgAC as well as Brunauer-Emmett-Teller (BET) surface area.
关键词： Catalysis,Water/Waste Water Treatment,Fe3O4,Photo-Fenton,Aminoclay,Nanocomposite
更新于2025-09-09 09:28:46