Heterostructuring 2D Co2P nanosheets with 0D CoP via a salt-assisted strategy for boosting hydrogen evolution from ammonia borane hydrolysis
Chao Wan, Xiaoling Liu, Jiapei Wang, Fengqiu Chen, Dang‐guo Cheng
Abstract
Ammonia borane (NH 3 BH 3 , AB) holds promise for chemical storage of hydrogen. However, designing superb and low-cost photocatalyst to drive hydrogen evolution from AB under visible light irradiation is highly desirable but remains a major challenge for promoting the practical utilization of AB. Herein, we demonstrated a heterostructure photocatalyst consisting of zero-dimensional (0D) CoP nanoparticles immobilized on two-dimensional (2D) Co 2 P nanosheets (CoP/Co 2 Ps) as a high-performance and low-cost catalyst for hydrogen evolution from AB hydrolysis, in which 0D/2D heterostructure was synthesized using the salt-induced phase transformation strategy. Interestingly, the optimized CoP/Co 2 Ps exhibit a robust H 2 evolution rate of 32.1 L·min −1 ·g Co −1 , corresponding to a turnover frequency (TOF) value of 64.1 min −1 , being among the highest TOF for non-noble-metal catalysts ever reported, even outperforming some precious metal catalysts. This work not only opens a new avenue to accelerate hydrogen evolution from AB by regulating the electronic structures of heterointerfaces, but also provides a novel strategy for the construction of precious-metal-free materials for hydrogen-related energy catalysis in the future.