This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. The corresponding author was contacted for comment about concerns regarding the EDX and FTIR data but was unable to provide a suitable explanation. The authors provided some original data which included an SEM image that has an EDS spot cropped from another SEM image. The EDX spectra showed inconsistencies and signs of manipulation. The authors did not provide raw FTIR data. The Editors have therefore lost confidence in the contributions of the authors and the reliability of the findings presented in this article as a whole, and are retracting it. Furthermore, unauthorised authorship changes were made when the revised version of this paper was submitted, following suggestions for relatively minor revisions from the reviewers and Guest Editor, with authors Tak H. Kim, Grzegorz Boczkaj and Ashwag Shami being added to the paper. The original corresponding author also decided to remove himself at this stage. No satisfactory explanation was given for this change, nor was it approved by the editor. This authorship change breaches the policies of the journal and as a result, the editors no longer have confidence in this paper and are retracting it. The journal apologises for not having identified the problematic authorship change during the review process and for any resulting inconvenience.
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