Clean H₂ production at room temperature using CuPd/TiO₂ catalytic hypophosphite hydrolysis

A safe, clean, and cost-effective H₂ production system is critically important for developing hydrogen energy. Sodium hypophosphite (NHP) represents a promising hydrogen carrier due to its high stability, low cost, and abundance. NHP can hydrolyse under mild conditions to yield H₂ without any gaseous by-products. In this work, we report clean and efficient H₂ production at room temperature using CuPd/TiO₂ catalytic NHP hydrolysis with the rate of 13.53 mL·min^-1 (135.3 mL·min^-1·g^-1) and 100% NHP conversion within 30 min. The catalyst also exhibits excellent recyclability toward H₂ production. The two metals in CuPd/TiO₂ exhibit a synergistic effect, Cu can facilitate the activation and dissociation of water, whereas Pd sites accelerate the activation and dehydrogenation of H₂PO₂^-. This work develops a new cost-economic and highly efficient catalytic H₂ production system, which is expected to contribute to development of hydrogen economy.