Bimetallic non-noble CoNi nanoparticles monodispersed on multiwall carbon nanotubes: Highly efficient hydrolysis of ammonia borane

Bimetallic non-noble CoNi nanoparticles have been successfully supported on multiwall carbon nanotubes. The ultrafine CoNi nanoparticles with particle size of 2 nm are monodispersed on multiwall carbon nanotubes surface. The synergistic effect between Co and Ni plays an important role in enhancement for ammonia borane hydrolysis. In addition, the support effect could also efficiently improve the catalytic performance. Compared to the other support, the synthesized Co0.7Ni0.3/MCNTs shows excellent catalytic performance with TOF of 128 molH2 molcat−1 min−1 at 323 K. Interestingly, the prepared nanocatalysts also possess high durability in ammonia borane hydrolysis. [Display omitted] •Non-noble CoNi NPs assembled on multiwall carbon nanotubes (MCNTs) were prepared.•The monodispersed CoNi NPs with a diameter of 2 nm can be readily obtained.•Synergistic effect can significantly enhance the catalytic activity.