One-step electrochemical synthesis of γ-Fe2O3@MIL-88a magnetic composite for heterogeneous Fenton-like catalysis. Issue 23 (1st December 2022)

• Record Type: Journal Article
• Authors: Kuzharov, Andrey A.; Gritsai, Maksim A.; Butova, Vera V.; Soldatov, Mikhail A.; Polyakov, Vladimir A.; Rud, Polina A.; Rusalev, Yury V.; Kubrin, Stanislav P.; Roldugin, Victor A.; Trigub, Alexander L.; Soldatov, Alexander V.
• Is Part Of: Ceramics international. Volume 48:Issue 23(2022)Part A
• Page Start: 34864
• Page End: 34876
• Publication Date: 2022-12-01
• Subjects: Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.08.076
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: We report a new one-step room-temperature electrochemical synthesis of γ-Fe2 O3 @MIL-88a magnetic composite. Anode from metallic iron was used as Fe-source. We did not use any toxic or hazardous solvents. A careful, comprehensive characterization of the obtained material was applied, including a synchrotron experiment. The γ-Fe2 O3 @MIL-88a composite comprised diamond-like MIL-88a crystals of 100–300 nm covered with γ-Fe2 O3 nanoparticles. This component provided a magnetic response to the synthesized material. Moreover, γ-Fe2 O3 nanoparticles boosted semiconductor MOF crystals. As a result, the γ-Fe2 O3 @MIL-88a composite demonstrated superior photocatalytic performance toward methylene blue degradation. MIL-88a crystals acted as photo-Fenton catalysts activating H2 O2 decomposition with the production of active OH radicals. Easy magnetic separation and visible-light activated photocatalytic properties make γ-Fe2 O3 @MIL-88a composite a promising system for removing organic dyes from contaminated water according to the photo-Fenton process. Graphical abstract: Image 1