Significance of thermal interfacing in hematite (α-Fe2O3) nanoparticles synthesized by sol-gel method and its characteristics properties

Hematite (alpha-Fe2O3) nanoparticles were synthesized through the cost-effective sol-gel method. The impact of temperature influenced in as-prepared and calcinated hematite nanoparticles was explored. To characterize the synthesized compounds with the help of X-ray diffraction (XRD), Thermogravimetric & Differential Thermogravimetric Analysis (TG-TDA), Fourier Transform Infrared spectroscopy (FT-IR), Ultra-Violet spectroscopy (UV-Vis), Scanning Electron Microscope with Energy Dispersive X-ray Analysis (SEM with EDAX), and Vibrating Sample Magnetometer techniques (VSM). The structural studies were confirmed rhombohedral structure with space group R-3c in C-2 NPs. The surface morphological analysis confirmed shape, size, and particle homogeneity were ensured with the arrival of temperature. The thermal analysis reported as the C-1 NPs shows excellent phase stability till reaching 1100 degrees C. FT-IR confirms the phase purity of the nanoparticles synthesized. The optical absorption at 534nm confirms the formation of red color alpha-Fe2O3 C-2 NPs and the optical bandgap values 1.92-1.97eV. The magnetometry steady was observed as a magnetic transition of paramagnetic to weak ferromagnetic magnetic behavior of NPs, which implies that several structural improvements are achieved by the thermal interfacing on the NPs surface.

Automated summary

Hematite nanoparticles were synthesized via a cost-effective sol-gel method, and the influence of temperature on their structure and properties was investigated. Characterization techniques such as XRD, TG-TDA, FT-IR, UV-Vis, SEM with EDAX, and VSM confirmed the rhombohedral structure, thermal stability, optical properties, and magnetic behavior of the nanoparticles. The results demonstrated the structural improvements achieved through thermal interfacing on the nanoparticles.