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Ammonia borane (NH3BH3, 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) Co2P nanosheets (CoP/Co2Ps) 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/Co2Ps exhibit a robust H2 evolution rate of 32.1 L∙min−1∙gCo−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.
This work was financially supported by the National Natural Science Foundation of China (Nos. 22108238, 21878259, 22278353, and U22A20408), the Zhejiang Provincial Natural Science Foundation of China (Nos. LR18B060001 and Z23B060009), and China Postdoctoral Science Foundation (Nos. 2020T130580, PC2022046, and 2019M662060). We also appreciate the Shiyanjia Lab (www.shiyanjia.com) for material characterizations.