Preparation, Characterization, and Application of Nanospherical α-Fe۲O۳ Supported on Silica for Photocatalytic Degradation of Methylene Blue

In the research, spherical α-Fe۲O۳ NanoParticles (NPs) were synthesized through Forced Hydrolysis and Reflux Condensation (FHRC) process and were supported on the surface of silica sand by Solid-State Dispersion (SSD) method. Characterization of silica and α-Fe۲O۳/SiO۲ catalyst was done using Fourier-Transform InfraRed (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM) images, X-Ray Diffraction (XRD) patterns and Brunauer, Emmet and Teller (BET) surface area. The supported α-Fe۲O۳/SiO۲ nanocatalyst with the average crystallite size of ۲۷.۵ nm was used for photocatalytic removal of Methylene Blue (MB) from aqueous solutions under Ultra-Violet (UV) light.In order to optimization of effective parameters on MB degradation, the single-variable method was used. The optimal conditions were determined as pH=۱۱, initial concentration of MB=۱۰ ppm, and the mass of catalyst =۱.۰ g. Degradation efficiency in optimal conditions was ۹۷.۳۲%.

کلیدواژه ها:

Methylene blue ، SSD ، FHRC ، α-Fe۲O۳ ، SiO۲