Cuboid Ni₂P as a Bifunctional Catalyst for Efficient Hydrogen Generation from Hydrolysis of Ammonia Borane and Electrocatalytic Hydrogen Evolution

Abstract

The design of high-performance catalysts for hydrogen generation is highly desirable for the upcoming hydrogen economy. Herein, we report the colloidal synthesis of nanocuboid Ni P by the thermal decomposition of nickel chloride hexahydrate (NiCl ⋅6 H O) and trioctylphosphine. The obtained nanocuboid Ni P was characterized by using powder X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy. For the first time, the as-synthesized nanocuboid Ni P is used as a bifunctional catalyst for hydrogen generation from the hydrolysis of ammonia borane and electrocatalytic hydrogen evolution. Owing to the strong synergistic electronic effect between Ni and P, the as-synthesized Ni P exhibits catalytic performance that is superior to its counterpart without P doping.

Surface Plasmon Resonance‐Enhanced Visible‐NIR‐Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO2 Nanotube Heterojunctions

“…The band gap of Ag‐MBTHs (≈2.63 eV) is smaller than that of MBTHs (≈2.89 eV), which is also ascribed to the efficient decoration of Ag NPs (the inset of Figure B). It is a typical type IV curves for Ag‐MBTHs and MBTHs in N 2 adsorption/desorption isotherms (Figure C), which indicate to mesoporous materials . The Brunauer‐Emmett‐Teller surface area, pore size and pore volume of Ag‐MBTHs and MBTHs are calculated to be ≈85 m 2 g −1 , ≈13.2 nm, ≈0.31 cm 3 g −1 , and ≈91 m 2 g −1 , ≈14.4 nm, ≈0.34 cm 3 g −1 , respectively.…”

“…It is at ypical type IV curves forA g-MBTHs and MBTHs in N 2 adsorption/desorption isotherms ( Figure 1C), which indicate to mesoporous materials. [45,46] The Brunauer-Emmett-Teller surfacea rea, pore size and pore volume of Ag-MBTHs and MBTHs are calculated to be % 85 m 2 g À1 , % 13.2 nm, % 0.31 cm 3 g À1 ,a nd % 91 m 2 g À1 , % 14.4 nm, % 0.34 cm 3 g À1 ,r espectively.T he results indicate that the Ag NPs decorate the mesoporous black TiO 2 nanotubes efficientlya nd the nanotube structure is maintained well during the process of decorating Ag NPs, which could be corroborated by the followingS EM and TEM characterization.…”

Towards high activity of hydrogen production from ammonia borane over efficient non-noble Ni5P4 catalyst

“…It was reported that Ni2P could show good performance for many reactions, such as AB hydrolysis [23,29,30], direct formic acid fuel cells [31] and hydrogen evolution reaction (HER) [24] because of the unique properties originated from the addition of P.…”

In Situ Growth of Ultrafine PtPd Nanoparticles on Bifunctional NH2‐N‐rGO with Remarkable Catalytic Activity for Ammonia Borane Dehydrogenation

“…[4][5][6] Compared with other potential H 2 storage material, including formic acid, [7] and sodium borohydride, [8] ammonia borane (AB) has attracted tremendous research attention for its merits of high stability, high hydrogen density (19.6 %) and non-toxic. [4,[9][10][11][12] Typically, there are two primary pathways to release the hydrogen stored in AB, that is, catalytic thermolysis and hydrolysis. Compared to the thermal dehydrogenation, AB hydrolysis can occur under mild condition and generate three equivalents of H 2 with proper heterogeneous catalysts.…”

“…However, the efficient and safe H 2 storage is the key issue to realize the H 2 energy society because of its gaseous under mild conditions . Compared with other potential H 2 storage material, including formic acid, and sodium borohydride, ammonia borane (AB) has attracted tremendous research attention for its merits of high stability, high hydrogen density (19.6 %) and non‐toxic . Typically, there are two primary pathways to release the hydrogen stored in AB, that is, catalytic thermolysis and hydrolysis.…”