Preparation of Nano Spherical α-Fe۲O۳ Supported on ۱۲-Tungstosilicic Acid Using Two Different Methods: A Novel Catalyst

In this research, spherical α-Fe۲O۳ nanoparticles (NPs) were supported on the surface of ۱۲-tungstosilicic acid (۱۲-TSA.۷H۲O) as a catalyst support, using two different Forced Hydrolysis and Reflux Condensation (FHRC) and Solid-State Dispersion (SSD) methods. α-Fe۲O۳ and ۱۲-TSA.۷H۲O were synthesized due to previous reports. All products were characterized by using FT-IR, SEM, EDX, elemental map, XRD and BET surface area. The results indicated that the supported catalyst (α-Fe۲O۳/۱۲-TSA.۷H۲O) successfully was prepared and no change was found on the chemical structures of ۱۲-TSA.۷H۲O and α-Fe۲O۳. By using XRD analysis average sizes of spherical α-Fe۲O۳ NPs supported by SSD and FHRC methods were measured ۵۰.۵ and ۷۰.۸۲ nm, respectively. The catalyst presented in this study can be applied in the different areas such as nano photocatalytic reactions.

کلیدواژه ها:

FHRC ، SSD ، α-Fe۲O۳ ، ۱۲-tungstosilicic acid ، α-Keggin