Constructing Ru Clusters Decorated Co3b-Cop Heterostructures as a Highly Active and Reusable Catalyst for H2 Generation by Catalyzing Nabh4 Hydrolysis

Constructing an efficient and reusable catalyst for catalyzing NaBH 4 hydrolysis for H 2 production is of vital significance. Herein, the Ru clusters decorated Co 3 B-CoP heterostructures are obtained by chemical reduction and gas-phase phosphating treatment. The strong electronic interaction and abundant heterojunctions between the Co 3 B-CoP substrate and Ru clusters have been elucidated. The optimal Ru 6.3 /Co 3 B-CoP catalyst exhibits a fast hydrogen generation rate (8875.8 mL min  1 g cat  1 ) and a high turnover frequency (636.0 min  1 ) of at 25°C, superior to most ever reported catalysts. The excellent NaBH 4 hydrolysis performance can be attributed to the lower activation energy (47.6 kJ mol  1 ) and the synergy between Co 3 B-CoP substrate and Ru clusters. Density functional theory calculations show that electrons penetrate into Ru clusters from Co 3 B-CoP substrate, in which the electron-rich Ru clusters can selectively adsorb BH 4  ions, while the electron-deficient Co 3 B-CoP facilitates the capture of H 2 O molecules, thereby synergistically promote the catalyzing NaBH 4 hydrolysis to produce H 2 .