Boosted Reactivity of Ammonia Borane Dehydrogenation over Ni/Ni₂P Heterostructure

Abstract

Ammonia borane (AB) is regarded as a highly promising candidate for chemical hydrogen-storage materials. Developing low-cost yet efficient catalysts for the dehydrogenation of AB is central to achieving hydrogen conversion. Here a heterostructure of Ni/Ni 2 P nanoparticles deposited on a defective carbon framework for the hydrolysis of AB is developed by elaborately controlling phosphorization conditions. The electronic structure and interfacial interaction of the ternary components are probed by synchrotron-based X-ray absorption fine structure and further simulated via density functional theory. By adjusting the content of Ni and Ni 2 P in the hetrostructure, the optimized hybrid exhibits catalytic performance of H 2 generation from the hydrolysis of AB under ambient conditions with a turnover frequency of 68.3 mol (H 2 ) mol −1 (Cat) min −1 and an activation energy (E a ) of 44.99 kJ mol −1 , implying its high potential as an efficient supplement for noble-metal-based catalysts in hydrogen energy applications.

Atomic Interface‐Exciting Catalysis on Cobalt Nitride‐Oxide for Accelerating Hydrogen Generation

“…[33] Some research proposes the activation of water as the key step. [50] And other research specifically suggests the cleavage of OH as the RDS. [51] The activation of protons in ammonia borane hydrolysis also got the attention of researchers.…”

Carbon dots-confined CoP-CoO nanoheterostructure with strong interfacial synergy triggered the robust hydrogen evolution from ammonia borane

“…6c) [40,41]. Phosphorus injection into a carbon framework has been reported to aid the adsorption of AB molecules and promote their hydrolysis [20]. The role of the novel CoP-CoO nanoheterostructure in AB hydrolysis was also investigated.…”

“…Structural design must also increase their durability. Therefore, surface and interface engineering can help construct efficient heterogeneous catalysts, where strong interface synergy can enhance the metal phosphide's activity [20,21].…”

Hydrolytic dehydrogenation of NH3BH3 catalyzed by ruthenium nanoparticles supported on magnesium–aluminum layered double-hydroxides

“…In general, the high-activity catalysts toward AB hydrolysis should have a proper adsorption energy for the adsorption of AB molecules and H 2 O molecules, and a low dissociation energy of H 2 O molecule is also indispensable. 52 The adsorption energy of AB molecule on the surface of Ru (001) surface and the Ru/MgAl-LDH catalyst was optimized ( Fig. 9(a and b)).…”