1 research outputs found
Multifunctional Nanohybrids by Self-Assembly of Monodisperse Iron Oxide Nanoparticles and Nanolamellar MoS<sub>2</sub> Plates
Here, we report the synthesis, characterization,
and properties
of novel nanohybrids formed by self-assembly of negatively charged
MoS<sub>2</sub> nanoplates and positively charged iron oxide nanoparticles
(NPs) of two different sizes, 5.1 and 11.6 nm. Iron oxide NPs were
functionalized with an amphiphilic random copolymer, quaternized poly(2-(dimethylamino)ethyl
metacrylate-<i>co</i>-stearyl metacrylate), synthesized
for the first time using atom transfer radical polymerization. The
influence of the MoS<sub>2</sub> fraction and the iron oxide NP size
on the structure of the nanohybrids has been studied. Surprisingly,
larger NPs retained a larger fraction of the copolymer, thus requiring
more MoS<sub>2</sub> nanoplates for charge compensation. The nanohybrid
based on 11.6 nm NPs was studied in oxidation of sulfide ions. This
reaction could be used for removing the dangerous pollutant from wastewater
and in the production of hydrogen from water using solar energy. We
demonstrated a higher catalytic activity of the NP/MoS<sub>2</sub> nanohybrid than that of merely dispersed MoS<sub>2</sub> in catalytic
oxidation of sulfide ions and facile magnetic recovery of the catalyst
after the reaction