Issue 11, 2023, Issue in Progress

Simultaneous precipitation and discharge plasma processing for one-step synthesis of α-Fe2O3–Fe3O4/graphene visible light magnetically separable photocatalysts

Abstract

A novel facile combination of precipitation and plasma discharge reaction is successfully employed for one-step synthesis of an α-Fe2O3–Fe3O4 graphene nanocomposite (GFs). The co-existence and anchoring of hematite (α-Fe2O3) and magnetite (Fe3O4) nanoparticles onto a graphene sheet in the as synthesized GFs were verified by results of XRD, Raman, SEM, TEM, and XPS. HRTEM characterization was used for confirming the bonding between α-Fe2O3/Fe3O4 nanoparticles and the graphene sheet. Consequently, GFs shows superior photodegrading performance towards methylene blue (MB), compared to individual α-Fe2O3/Fe3O4 nanoparticles, as a result of band gap narrowing and the electron–hole pair recombination rate reducing. Moreover, GFs allows a good possibility of separating and recycling under an external-magnetic field, suggesting potential in visible-light-promoted photocatalytic applications.

Graphical abstract: Simultaneous precipitation and discharge plasma processing for one-step synthesis of α-Fe2O3–Fe3O4/graphene visible light magnetically separable photocatalysts

Supplementary files

Article information

Article type
Paper
Submitted
29 Oct 2022
Accepted
21 Feb 2023
First published
07 Mar 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 7372-7379

Simultaneous precipitation and discharge plasma processing for one-step synthesis of α-Fe2O3–Fe3O4/graphene visible light magnetically separable photocatalysts

N. L. Tuyen, T. Q. Toan, N. B. Hung, P. Q. Trieu, N. N. Dinh, D. B. Do, D. Van Thanh and V. Nguyen, RSC Adv., 2023, 13, 7372 DOI: 10.1039/D2RA06844C

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