Photocatalysis is considered to be the most efficient treatment as compared to the other methods and is suitable for highly cost-sensitive and energy-restrictive applications. In this research, first, we synthesized magnetic nanoparticles and reported their applications. We are going to publish it in to related communications (part 1 and part 2). In part 1, we synthesized magnetic nanoparticles of Fe3O4 and the versatile ZSM-5/Fe3O4 magnetic nanocomposite for the photocatalytic treatment of wastewater. This paper specifically reports the varying ratios of ZSM-5 and Fe3O4 in the nanocomposites that are 1:1, 1:2 and 1:0.5 and as the concentration of Fe3O4 varied, the properties of the nanocomposite changed as well. Further, these nanocomposites are characterized by X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and several advanced spectroscopy techniques.
In addition to this, in a second communication (part 2), a comparison study is done between the three nanocomposites to study their magnetic behavior and photocatalytic efficiency to treat wastewater. Since these materials are magnetic in nature, therefore, after photocatalysis the material can be easily removed with the help of external magnets. Our approach provides an efficient and comparable synthesis process having photocatalytic applications in treating wastewater.
The study is interesting and good. The catalysts removed by easily because of their nagnetic properties. My question is that are there any other zeolites with magnetic properties for using in methylene blue degradation. Can you compare your removal efficiency to other studies? Which formula did you used for calculation degradation and adsorption efficiencies ? Why did you used 60 min dark adsorption time? Which light source did you use for adsorption experiments? Can you give information about model, brand and λ value of the visible light source?
Thank you
Sincerely
Thank you for you comment. Yes, there are some other magnetic zeolites such as zeolite 13X and zeolite HY which gave 88% and 92% MB dye removal efficiency at 10ppm initial dye concentration and 0.3mg/ml of adsorbent material. Magnetic zeolite NaA also gives 96% MB removal efficiency at 300ppm initial dye concentration and 7.2mg/ml of adsorbent material.
The formula used for calculating the degradation is [(Ao-Ae)/Ao] × 100%. Where, Ao is the initial dye absorbance and Ae is the absorbance at a specific time.
There was no significant change noted in the absorbance spectra after 60 minutes.
450 Watts High Pressure Mercury Vapour Lamp provided by LELESIL was used as the visible light source. The λ value for the lamp is 300-400 nm.
Thank you for you comment. Yes, there are some other magnetic zeolites such as zeolite 13X and zeolite HY which gave 88% and 92% MB dye removal efficiency at 10ppm initial dye concentration and 0.3mg/ml of adsorbent material. Magnetic zeolite NaA also gives 96% MB removal efficiency at 300ppm initial dye concentration and 7.2mg/ml of adsorbent material.
The formula used for calculating the degradation is [(Ao-Ae)/Ao] × 100%. Where, Ao is the initial dye absorbance and Ae is the absorbance at a specific time.
There was no significant change noted in the absorbance spectra after 60 minutes.
450 Watts High Pressure Mercury Vapour Lamp provided by LELESIL was used as the visible light source. The λ value for the lamp is 300-400 nm.
