Effect of annealing temperature on structural, optical and photocatalytic properties of α-Fe2O3 nanostructures. Issue 10 (3rd October 2018)

• Record Type: Journal Article
• Authors: Singh, Sandhya; Hitkari, Gaurav; Pandey, Gajanan
• Is Part Of: Inorganic and nano-metal chemistry. Volume 48:Issue 10(2018)
• Page Start: 477
• Page End: 485
• Publication Date: 2018-10-03
• Subjects: Nanostructures -- XRD -- SEM -- BET -- optical properties -- photocatalytic activity; Inorganic compounds -- Synthesis -- Periodicals; Nanostructured materials -- Periodicals; Reactivity (Chemistry) -- Periodicals; Inorganic compounds -- Synthesis; Nanostructured materials; Reactivity (Chemistry); Periodicals; 546
• DOI: 10.1080/24701556.2019.1571511
• Languages: English
• ISSNs: 2470-1556

Abstract

Abstract: In the present work α-Fe2 O3 nanostructures have been synthesized by chemical co-precipitation followed by annealing at 500 and 600 °C for 3 h. Nanostructure powders were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), particle size distribution, Brunauer Emmett Teller analysis (BET), photoluminescence and UV-visible spectroscopy. XRD confirmed the formation of crystalline α-Fe2 O3 nanostructures while SEM confirmed the formation of rice grain and spherical shape α-Fe2 O3 nanostructures at 500 and 600 °C annealation temperature. From EDX and FTIR results formation of α-Fe2 O3 is further established. BET analysis confirmed the mesoporous behavior of nanostructures. UV-Visible and photoluminescence spectra have been used to determine band gap and photo-oxidation behavior of dye methylene blue. Both α-Fe2 O3 -500 and α-Fe2 O3 -600 nanostructures exhibit exceptionally high photocatalytic activity however the same is higher for α-Fe2 O3 -500 than that of α-Fe2 O3 -600 for degradation of methylene blue (Meb).