Expression of concern: Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides
Abstract
Expression of concern for ‘Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides’ by Saeideh Mirfakhraei et al., New J. Chem., 2018, 42, 1757–1761, https://doi.org/10.1039/C7NJ02513K.