Expression of concern: Preparation of polydopamine sulfamic acid-functionalized magnetic Fe3O4 nanoparticles with a core/shell nanostructure as heterogeneous and recyclable nanocatalysts for the acetylation of alcohols, phenols, amines and thiols under solvent-free conditions

Green Chem., 2024, Advance ArticleDOI: 10.1039/D4GC90106A, Expression of Concern Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Hojat Veisi, Sepideh Taheri, Saba HemmatiTo cite this article before p…