As a special class of coordinated frameworks comprised of various metal species, Prussian blue analogues (PBAs) have received increasing attention for catalytic applications. Nevertheless, few studies have been performed to investigate catalytic activities of PBAs for hydrogen generation (HG) from NaBH₄ hydrolysis. No researches have been implemented to examine effects of different M^II and M^III of PBAs (M^II₃[M^III(CN)₆]₂) (M^II = Co, Fe, Mn, Ni, and Zn; M^III = Fe, Co) on NaBH₄ hydrolysis for HG. Thus, the aim of the study is to explore and compare catalytic activities of various PBAs for HG from NaBH₄ hydrolysis. While two hexacyano-metalates and different metals are used to obtain various PBAs, Co₃[Co(CN₆)]₂ (Co–Co) is the most effective PBA for HG from NaBH₄ hydrolysis. Furthermore, Co–Co has a much lower E_a of 37.6 kJ/mol for HG from NaBH₄ hydrolysis in comparison to E_a values by other reported catalysts. Besides, HG by Co–Co could be optimized in the presence of 5% NaOH concentration, which leads to an even lower E_a of 28.6 kJ/mol. Co–Co is also reusable and stable for multiple cycles of HG. These features reveal that Co-containing PBAs can be a promising heterogeneous catalyst to facilitate HG from NaBH₄ hydrolysis.

作为由各种金属组成的一类特殊的协调框架，普鲁士蓝类似物（PBA）在催化应用中受到越来越多的关注。然而，很少有研究来研究PBA对NaBH ₄水解产生氢（HG）的催化活性。尚未进行研究来研究PBA的不同M ^II和M ^III（M ^II ₃ [M ^III（CN）₆ ] ₂）（M ^II  = Co，Fe，Mn，Ni和Zn； M ^III  = Fe ，Co）在NaBH _4上水解为HG。因此，本研究的目的是探索和比较各种PBA对NaBH ₄水解产生的HG的催化活性。虽然使用两种六氰基金属酸盐和不同的金属来获得各种PBA，但从NaBH ₄水解中，Co ₃ [Co（CN ₆）] ₂（Co-Co）是用于HG的最有效的PBA 。此外，与其他报告的催化剂的E _a值相比，Co-Co对NaBH ₄水解产生的HG的E _a低得多，为37.6 kJ / mol 。此外，Co-Co的HG可以在5％NaOH浓度下进行优化，从而导致更低的E _a28.6 kJ / mol。Co-Co还可以在多个HG循环中重复使用且稳定。这些特征表明，含钴的PBA可能是一种有前途的多相催化剂，可促进NaBH ₄水解产生的HG 。