Retraction notice to "Recent advancements of spinel ferrite based binary nanocomposite photocatalysts in wastewater treatment"[Chemosphere 274 (2021) 129734].

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal). <This article has been retracted at the request of the Editors-in-Chief. A journal-wide investigation by Elsevier's Research Integrity & Publishing Ethics team identified violations of the journal's policies on conflict of interest related to the submission and review of this paper. Review of this submission was handled by Guest Editor Pau Loke Show despite an extensive recent record of collaboration, including co-publication, with three of the paper co-authors (P. Senthil Kumar, Dai-Viet N. Vo, Saravanan Rajendran). This compromised the editorial process and breached the journal's policies. The authors disagree with this retraction and dispute the grounds for it.>.