Abstract
The preparation, characterization and catalytic test of alloy type poly(N-vinyl-2-pyrrolidone)-protected nickel-ruthenium nanoparticles (3.8 ± 1.6 nm) (Ni-Ru@PVP) to liberate hydrogen from ammonia borane via hydrolysis have been reported in the present study. Ni-Ru@PVP nanoparticles have easily been synthesized by simultaneous reduction of suitable water-soluble nickel and ruthenium salts in the mixture of water/ethanol by a modified method of alcohol reduction with PVP as both reducing agent and stabilizer. They have been characterized by ultraviolet-visible spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. They have been detected to be highly efficient and durable catalysts to liberate hydrogen from ammonia borane via hydrolysis under ambient conditions. Among prepared catalysts, Ni0.5Ru0.5@PVP nanoparticles provided mean turnover frequency (TOF) of 300 min−1 and activation energy of 46.8 ± 1.2 kJ mol−1 in this hydrolysis reaction.
Published Version
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