Dual-regulation of biomass derived-carbon via template-assisted and heteroatom-doping coupled approach to boost ultrafine RuCo alloys for hydrogen produce

Considerable advancements have been made in the exploration of metal nanocatalysts for hydrogen generation through ammonia borane hydrolysis. However, challenges remain in modifying the carrier structures. This research presents an innovative dual-regulation method that employs lignin-derived carbon, combining self-assembly with heteroatom doping to produce carbon co-doped with nitrogen and phosphorus. This carbon supports RuCo alloys specifically designed for catalyzing the hydrolysis of ammonia borane. During this process, the decomposition of basic magnesium carbonate generates an MgO template, while gases activation facilitates the development of micropores and mesopores. Moreover, diammonium hydrogen phosphate serves as a source of nitrogen and phosphorus doping. The final product exhibits a high surface area and notable levels of nitrogen and phosphorus doping, featuring a structure reminiscent of seaweed that improves ion diffusion and transport. Capitalizing on these properties, the Ru1Co9 alloys exhibit impressive catalytic efficacy along with good reusability. Additionally, the integration of Zn2+ and EDTA-2Na allows for the precise modulation of the ammonia borane “ON-OFF” switch as required. This investigation not only provides a substantial reference for designing advanced energy heteroatom-doped porous carbon structures but also introduces a practical technique for on-demand hydrogen production.