Recently, effective hydrogen (H₂) evolution upon hydrolysis of different hydrogen storage materials has received much attention. Herein, graphene quantum dots-transition metal nanoparticles (GQDs-TMNPs), with high dispersibility and activity, have been successfully applied in the hydrolysis of both NH₃BH₃ (AB) and NaBH₄ for the first time. GQDs-RhNPs, GQDs-RuNPs, and GQDs-PtNPs are very effective in the hydrolysis of AB and the turnover frequencies (TOFs) can achieve to as high as 656, 384, and 281 mol_H2·mol_cat⁻¹ min⁻¹, respectively. Moreover, the synergistic effect between GQDs and TMNPs is explored, and the mechanisms of catalytic hydrolysis of AB and NaBH₄ by GQDs-TMNPs are proposed. This work not only paves the way for the development of GQDs-TMNPs nanocatalysts for the different hydrogen storage materials, but also further advances the understanding of the synergistic effects between GQDs and TMNPs.

近来，在不同的储氢材料水解时有效的氢（H ₂）放出引起了广泛关注。本文中，具有高分散性和活性的石墨烯量子点-过渡金属纳米颗粒（GQDs-TMNPs）已成功地首次应用于NH ₃ BH ₃（AB）和NaBH ₄的水解中。GQDs-RhNPs，GQDs-RuNPs和GQDs-PtNPs在AB的水解中非常有效，周转频率（TOF）可以达到656、384和281 mol _H2 ·mol _cat ^-1  min ^-1， 分别。此外，探讨了GQDs与TMNP之间的协同作用，并提出了GQDs-TMNPs催化AB和NaBH ₄的水解机理。这项工作不仅为开发用于不同储氢材料的GQDs-TMNPs纳米催化剂铺平了道路，而且进一步提高了对GQDs和TMNPs协同作用的理解。