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

Mimouni I., BOUZIANI A., Naciri Y., Boujnah M., El Belghiti M. A., El Azzouzi M.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, cilt.29, sa.5, ss.7984-7996, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 5
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s11356-021-16146-w
  • Dergi Adı: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, IBZ Online, ABI/INFORM, Aerospace Database, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, EMBASE, Environment Index, Geobase, MEDLINE, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.7984-7996
  • Anahtar Kelimeler: alpha-Fe2O3, Fenton, Diclofenac, Photocatalysis, OH center dot radicals, HEMATITE ALPHA-FE2O3, FENTON DEGRADATION, FACILE SYNTHESIS, DRUG DICLOFENAC, METHYL-ORANGE, PHOTODEGRADATION, WATER, PERFORMANCE, DECOMPOSITION, OXIDATION
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.