Open Access Article
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Expression of concern: Sonochemistry: a good, fast and clean method to promote the removal of Cu(II) and Cr(VI) by MWCNT/CoFe2O4@PEI nanocomposites: optimization study
Mohammad Hassan
Omidi
a,
Mohammad Hossein
Ahmadi Azqhandi
*b and
Bahram
Ghalami-Choobar
*a
aDepartment of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran. E-mail: b-ghalami@guilan.ac.ir; Fax: +98-1333367262; Tel: +98-1333367262
bApplied Chemistry Department, Faculty of Petroleum and Gas (Gachsaran), Yasouj University, Gachsaran 75813-56001, Iran. E-mail: mhahmadia58@gmail.com; m.ahmadi@yu.ac.ir
First published on 4th November 2024
Abstract
Expression of concern for ‘Sonochemistry: a good, fast and clean method to promote the removal of Cu(II) and Cr(VI) by MWCNT/CoFe2O4@PEI nanocomposites: optimization study’ by Mohammad Hassan Omidi et al., New J. Chem., 2018, 42, 16307–16328, https://doi.org/10.1039/C8NJ03277G.
The Royal Society of Chemistry is publishing this expression of concern in order to alert readers that concerns have been raised regarding the integrity of the XRD data in Fig. 2.
The authors have provided some of the raw data, but the data from traces A and B have not been recovered. The traces provided do not match the published versions with visible differences in the noise. The Royal Society of Chemistry has asked the affiliated institution to investigate this matter and establish the reliability of the results.
An expression of concern will continue to be associated with this manuscript until we receive information from the institution on this matter.
Sally Howells-Wyllie
23rd October 2024
Executive Editor, New Journal of Chemistry
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