A facile and scalable preparation method for NiS doped nanostructured 3D assembly of 2D molybdenum sulfide and graphene porous aerogels was reported. These nanohybrids were in-situ synthesized from sulfur containing Mo (ammonium tertrathiomolybdate), graphite oxide and Ni oxalate under one step hydrothermal conditions. Further, thermal treatment at moderate conditions produces a highly interconnected macroporous network of thermally reduced GO having finely dispersed few-layered 2D MoS2 nanosheets impregnated with NiS nanoparticles was observed. The resulting nanohybrids were deeply investigated by means of several techniques. XRPD, HRTEM, SEM, Raman and BET have been applied to obtain information on the morphology and the structure of the nanohybrid as well as on the vibrational and spectroscopic properties. These NiS doped 3D assemblies exhibits enhanced catalytic performance in the hydrodesulphurization (HDS) of dibenzothiphene (DBT) with sustained recyclability in compared to pristine 3D MoS2/graphene and MoS2. In addition to the NiS promotion, the highly exfoliated structure of MoS2 nanosheets supported on porous graphene framework endowed these composites with abundant active sites for the electrocatalysis. The presented synthesis method can be applied into the large scale production of metal sulfide/oxide co-doped 2D MoS2/graphene aerogels and opens new avenues for wide range of applications including electrocatalysis and advanced energy storage, as well as offer useful information to design newer functional hybrids composed of 2D materials.

NiS doped 3D MoS2/graphene nanostructured hybrids as high performance hydrodesulfurization catalysts

253rd National Meeting (2017)

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