Effect of heat treatment on the photocatalytic activity of alpha-Fe2O3 nanoparticles: towards diclofenac elimination

Mimouni, Ibtihal
Bouzıanı, Asmae
Naciri, Yassine
Boujnah, Mourad
El Belghiti, Mohammed Alaoui
El Azzouzi, Mohammed
alpha-Fe2O3 nanoparticles were synthesized via a straightforward method. XRD, FTIR, SEM, ESR, and DRS techniques investigated the influence of various calcination temperatures on the crystal structure, optical, and photocatalytic properties of the samples. The obtained results demonstrated that the average crystallite size increased with the increase in the calcination temperature. Measured and computed optical properties were in accordance and the bandgap energy decreased with the increase in the calcination temperature. The highest photocatalytic degradation efficiency for diclofenac (DCF) was obtained with the sample calcinated at 300 degrees C (96%). The photocatalytic process occurs because of the presence of OH center dot radicals. The addition of H2O2 led to the inhibition of OH center dot radicals that H2O2 scavenged.


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Citation Formats
I. Mimouni, A. Bouzıanı, Y. Naciri, M. Boujnah, M. A. El Belghiti, and M. El Azzouzi, “Effect of heat treatment on the photocatalytic activity of alpha-Fe2O3 nanoparticles: towards diclofenac elimination,” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/94067.