Hydrodynamic synthesis of Fe(2)O(3)@MoS(2) 0D/2D-nanocomposite material and its application as a catalyst in the glycolysis of polyethylene terephthalate

We report a fast and simple synthesis of Fe(2)O(3)@MoS(2) 0D/2D-nanocomposite material using a Taylor–Couette flow reactor. A Taylor–Couette flow with high shear stress and mixing characteristics was used for fluid dynamic exfoliation of MoS(2) and deposition of uniform Fe(2)O(3) nanoparticles, resulting in a Fe(2)O(3)@MoS(2) in the form of 0D/2D-nanocomposite material. Using Taylor–Couette flow reactor, we could synthesize Fe(2)O(3)@MoS(2) 0D/2D-nanocomposite material at a rate higher than 1000 mg h(−1) which is much higher than previously reported production rate of 0.2–116.7 mg h(−1). The synthesis of Fe(2)O(3)@MoS(2) nanocomposite was achieved in an aqueous solution without thermal or organic solvent treatment. Exfoliated MoS(2) nanosheets show an average thickness of 2.6 ± 2.3 nm (<6 layers) and a lateral size of 490 ± 494 nm. Fe(2)O(3) nanoparticles have an average size of 7.4 ± 3.0 nm. Fe(2)O(3) nanoparticles on chemically and thermally stable MoS(2) nanosheets show catalytic activity in the glycolysis of polyethylene terephthalate (PET). High conversion of PET (97%) and a high yield (90%) for bis(hydroxyethyl) terephthalate (BHET) were achieved in a reaction time of 3 h at the reaction temperature of 225 °C.