Front. Chem. Frontiers in Chemistry Front. Chem. 2296-2646 Frontiers Media S.A. 1802299 10.3389/fchem.2026.1802299 Retraction Retraction: Fabrication of Fe3O4@PVA-Cu nanocomposite and its application for facile and selective oxidation of alcohols Frontiers Editorial Office 10.3389/fchem.2026.1802299 Frontiers Editorial Office * Correspondence: Frontiers Editorial Office, research.integrity@frontiersin.org 16 02 2026 2026 14 1802299 02 02 2026 02 02 2026 Copyright © 2026 Frontiers Editorial Office. 2026 Frontiers Editorial Office https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. A Retraction of the Original Research Article Fabrication of Fe3O4@PVA-Cu nanocomposite and its application for facile and selective oxidation of alcohols by Rahimi J, Niksefat M and Maleki A (2020). Front. Chem. 8:615. doi: 10.3389/fchem.2020.00615 section-at-acceptance Catalysis and Photocatalysis

The Journal retracts the 21 July 2020 article cited above.

Following concerns regarding the originality of the article, an investigation was conducted in accordance with Frontiers’ policies. It was found that the complaint was valid and that the article should be retracted because of an unacceptable level of similarity in Figures 1-6 to other articles, most notably:

Maleki, A., Niksefat, M., Rahimi, J., & Taheri-Ledari, R. (2019). Multicomponent synthesis of pyrano [2, 3-d] pyrimidine derivatives via a direct one-pot strategy executed by novel designed copperated Fe3O4@ polyvinyl alcohol magnetic nanoparticles. Materials Today Chemistry, 13, 110-120.

Maleki, A., Rahimi, J., and Valadi, K. (2019). Sulfonated Fe3O4@PVA superparamagnetic nanostructure: design, in-situ preparation, characterization and application in the synthesis of imidazoles as a highly efficient organic–inorganic Bronsted acid catalyst. Nano-Structures & Nano-Objects. 18: 100264. doi: 10.1016/j.nanoso.2019.100264.

This retraction was approved by the Chief Editors of Frontiers in Chemistry and the Chief Executive Editor of Frontiers. The authors do not agree to this retraction.

Approved by: Frontiers Editorial Office, Frontiers Media SA, Switzerland