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Visible light active Cu-doped iron oxide for photocatalytic treatment of methylene blue
- Source :
- Ceramics International. 48:7605-7612
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- In recent work, pure α-Fe2O3 (F-1) and series of 5% Cu doped Fe2O3 (CF-5) , 10% Cu doped Fe2O3 (CF-10) and 15% Cu doped Fe2O3 (CF-15) nanoparticles by facile chemical coprecipitation method were synthesized to study the effect of concentration of doping for photocatalytic activity. As prepared F-1, CF-5, CF-10, CF-15 nanoparticles were subjected to X-ray diffraction (XRD) and Fourier transform infra-red (FTIR) techniques to analyse the structural and functional groups features. These characterization techniques confirmed the successful doping of Cu 2+ ions in α-Fe2O3. The crystallite size of synthesized samples was calculated by Scherrer formula. Gradually decline in crystallite size from 18 to 15 nm was observed for undoped to doped samples. Scanning electron microscopic (SEM) analysis expressed that doping of Cu reduced the aggregation of particles and enhanced the surface area of nanoparticles. UV–Visible spectroscopic analysis of synthesized samples was used to calculate the bandgap energy of F-1, CF-5, CF-10, CF-15 nanoparticles i.e., 2.0, 1.7, 1.5, 1.4eV respectively. Narrowing bandgap energy of doped hematite supported to perform excellent photocatalytic activity. Maximum degradation of methylene blue was recorded via CF-10 within 140 min. Higher degradation rate of methylene blue by optimal concentration of CF-10 is due to effective electron trapping ability of photocatalyst.
- Subjects :
- Materials science
Scanning electron microscope
Coprecipitation
Process Chemistry and Technology
Doping
Nanoparticle
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Materials Chemistry
Ceramics and Composites
Photocatalysis
Crystallite
Fourier transform infrared spectroscopy
Scherrer equation
Nuclear chemistry
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........dec15291e745b53506ce26c589505807