One-pot synthesis of graphene hydrogel-anchored cobalt-copper nanoparticles and their catalysis in hydrogen generation from ammonia borane

We reported a facile one-pot synthesis of bimetallic CoCu nanoparticles (NPs) anchored on graphene hydrogel (GH-CoCu) as catalysts in hydrogen generation from the hydrolysis ammonia borane (HAB). The presented novel method composed reduction mixture oxide, cobalt(II), and copper(II) acetate tetrahydrates by aqueous ethylene glycol solution teflon-coated stainless-steel reactor at 180 °C. structure yielded GH-CoCu nanocatalysts was characterized TEM, SEM, XRD, XPS, ICP-MS. This is first example both NPs GH testing hydrothermally prepared noble metal-free GH-bimetallic nanocomposites for HAB. situ protocol allowed us to prepare different metal compositions investigating their catalysis AB hydrolysis, where best catalytic activity accomplished GH-Co33Cu67 nanocatalysts. obtained exhibited remarkable performance HAB providing highest rate 1015.809 ml H2 gcatalyst-1 min-1 room temperature. study has potential pave way development other GH-based that could be used applications.