Photocatalytic aspect of rGO/MnFe2O4as an efficient magnetically retrievable catalyst for reduction of nitroaromatic compounds under visible-light irradiation

Fuladi V., Bezaatpour A., Azizian-Kalandaragh Y., Amiri M., Nuri A., Nouhi S., ...Daha Fazla

Journal of Environmental Chemical Engineering, cilt.10, sa.5, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 5
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.jece.2022.108368
  • Dergi Adı: Journal of Environmental Chemical Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Chemical Abstracts Core, Compendex, INSPEC, Veterinary Science Database
  • Anahtar Kelimeler: Reduced graphene oxide, Photocatalyst, MnFe2O4, Reduction, Nitroaromatic, Kinetic, Magnetically recoverable
  • Gazi Üniversitesi Adresli: Evet

Özet

© 2022 Elsevier Ltd. All rights reserved.In this work a binary photocatalyst of rGO and MnFe2O4was prepared completely using one-pot hydrothermal simple method. In this way, in a reaction vessel, graphene oxide was reduced and at the same time, MnFe2O4nanoparticles were formed on its surface. The obtained catalyst was characterized by N2adsorption, FT-IR, XPS, HRTEM, XRD, FESEM and VSM physicochemical techniques. The rGO/MnFe2O4-50 % exhibits high photocatalytic efficiency for reduction of nitroaromatic compounds given to corresponding amines at ambient temperature. In this study, the kinetic parameter (k) of the reduction reaction was investigated. The catalyst was especially excellent in conversion of 1, 4-dinitrobenzene (99 % in 30 min), 4-bromonitrobenzene (100 % in 60 min) and 4-chloronitrobenzene (100 % in 70 min). In addition to the photocatalytic behavior of rGO/MnFe2O4-50 %, the recyclability of MnFe2O4was exploited and the catalyst was used for a number of times in the nitrobenzene photocatalytic test without observing a significant decreasing in efficiency.