Manganese dioxide coated cotton fabric decorated with palladium nanoparticles for oxidation of alcohols, oxidative deprotection of oximes and degradation of methyl orange

Abstract

The development of novel bio-based heterogeneous catalytic systems with easy separation and recyclability is significant in chemical synthesis. In this work, palladium nanoparticles have been successfully anchored on to the surface of MnO2 modified cotton fabric via a facile method for the synthesis of Pd(0)@MnO2-CF catalyst. Several characterization methods including FEG-SEM, EDX, XRD, FTIR, TGA, ICP-AES and XPS were used to confirm the immobilization of Pd NPs onto the cotton fabric. The catalytic activity of synthesized catalyst, Pd(0)@MnO2-CF, was evaluated for oxidation of alcohols, oxidative deprotection of oximes and degradation of methyl orange for which it demonstrated good activity. Besides, easy separation of the catalyst from the reaction mixture is one of its major advantages as it eliminates the need to employ other tedious work-up procedures. Further, the reusability of Pd(0)@MnO2-CF was studied by performing oxidation of 4-bromobenzyl alcohol and oxidative deprotection of 4-bromobenzaldehyde oxime consecutively for five times and a minor loss in catalytic activity was observed.