Trace - Ru - doped Co nanocatalysts supported on porous carbon nanosheets for efficient hydrogen generation from ammonia borane

Ammonia borane is a promising hydrogen-storage material, and efficient catalysts for its hydrolytic dehydrogenation are vital for future hydrogen energy. Trace Ru-doped RuCo alloy nanoparticles supported on potassium citrate derived porous carbon nanosheets (CNS) were synthesized via wet-chemical method. The RuCo/CNS catalyst shows activity for AB hydrolytic dehydrogenation, achieving 100% hydrogen selectivity and the turnover frequency of 4286.1 mol H 2 mol Ru −1  min −1 under mild conditions. This activity originates from the improved mass transfer arising from the hierarchical pores of the CNS, the effective stabilization of active sites by the carbon matrix, and optimized Ru-Co electronic synergy in the nanoparticles.