Active Site Design in a Core-Shell Nanostructured Catalyst for a One-Pot Oxidation Reaction
Abstract
Designing an active site: A new type of core-shell structured catalyst was prepared, with a uniform SiO2 core supporting Pd nanoparticles (NPs) covered with a Ti-containing mesoporous silica shell. Generated H2O2 on the inner Pd NP site could interact with the Ti oxide moieties within the mesopores before dispersion to the solvent can occur, which ultimately enhances the oxidation activity for one-pot oxidation of sulfide to sulfoxide.