Open Access Article
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Expression of concern: Facile route to synthesize Fe3O4@acacia–SO3H nanocomposite as a heterogeneous magnetic system for catalytic applications
Reza Taheri-Ledaria,
Mir Saeed Esmaeilia,
Zahra Varzia,
Reza Eivazzadeh-Keihana,
Ali Maleki*a and
Ahmed Esmail Shalan*bc
aCatalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology (IUST), Tehran 16846-13114, Iran. E-mail: maleki@iust.ac.ir; Fax: +98 21 73021584; Tel: +98 21 77240640-50
bCentral Metallurgical Research and Development Institute (CMRDI), P. O. Box 87, Helwan, Cairo 11421, Egypt. E-mail: a.shalan133@gmail.com
cBCMaterials, Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain
First published on 23rd April 2024
Abstract
Expression of concern for ‘Facile route to synthesize Fe3O4@acacia–SO3H nanocomposite as a heterogeneous magnetic system for catalytic applications’ by Reza Taheri-Ledari et al., RSC Adv., 2020, 10, 40055–40067, https://doi.org/10.1039/D0RA07986C.
The Royal Society of Chemistry is publishing this expression of concern in order to alert readers that concerns have been raised regarding the reliability of the FESEM and TEM images in Fig. 6a, b and d, as well as the EDX spectra in Fig. 3b and 7c. An investigation is underway, and an expression of concern will continue to be associated with the article until a final outcome is reached.
Laura Fisher
12th April 2024
Executive Editor, RSC Advances
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