The Editor-in-Chief is issuing an editorial expression of concern regarding the article . While the article presents novel information regarding the effects of Ni compositional variation in the photocatalytic activity of spinel ferrites, the Editor-in-Chief is concerned regarding the amount of overlap with [2,3,4,5]. None of the authors have responded to any correspondence from the editor or publisher about this overlap or the Editorial Expression of Concern.
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A. Lassoued, M.S. Lassoued, S. García-Granda et al., Synthesis and characterization of Ni-doped a-Fe2O3 nanoparticles through co-precipitation method with enhanced photocatalytic activities. J. Mater. Sci.: Mater. Electron. 29, 5726–5737 (2018). https://doi.org/10.1007/s10854-018-8543-0
A. Lassoued, M. Ben Hassine, F. Karolak et al., Synthesis and magnetic characterization of Spinel ferrites MFe2O4 (M = Ni Co, Zn and Cu) via chemical co-precipitation method. J. Mater. Sci.: Mater. Electron. 28, 18857–18864 (2017). https://doi.org/10.1007/s10854-017-7837-y
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Lassoued, A., Lassoued, M.S., Dkhil, B. et al. Expression of Concern: Nanocrystalline NixCo(0.5 − x)Zn0.5Fe2O4 ferrites: fabrication through coprecipitation route with enhanced structural, magnetic and photocatalytic activity. J Mater Sci: Mater Electron 32, 2651 (2021). https://doi.org/10.1007/s10854-020-03461-0