Biomass-derived porous carbons are generally used as supports for metal nanoparticle (NP) stabilizations, while the strong hydrophilicity of such materials makes the as-prepared catalysts hard to be isolated after reaction, significantly affecting their potential applications. Herein, magnetic N-functionalized carbon (CN) encapsulated Ni composite (Ni@CN) prepared via pyrolysis of bamboo fungus pre-absorbed with nickel nitrate is exploited as a matrix to synthesize Rh/Ni@CN hybrid, which can be used as a magnetically recoverable catalytic material for hydrolytic dehydrogenation of ammonia borane (AB) to generate hydrogen. The Rh/Ni@CN (Rh loading: 0.84 wt%) exhibits an optimal activity (turnover frequency: 351 min⁻¹) for hydrogen evolution from hydrolytic dehydrogenation of AB. Most importantly, this catalyst can be simply isolated by a magnet and reused at least five times with complete conversion of AB to hydrogen. The strong interaction between the two metals and the small size of Rh NPs are responsible for the improved catalytic activity for hydrolytic dehydrogenation of AB. This work provides an eco-friendly and efficient strategy to fabricate excellent catalysts in catalytic applications.

生物质衍生的多孔碳通常用作金属纳米颗粒 (NP) 稳定化的载体，而此类材料的强亲水性使得所制备的催化剂在反应后难以分离，从而显着影响其潜在应用。在此，利用预先吸附硝酸镍的竹菌热解制备的磁性 N 官能化碳 (CN) 包覆镍复合材料 (Ni@CN) 作为基质合成 Rh/Ni@CN 杂化物，可用作用于氨硼烷 (AB) 水解脱氢产生氢气的磁性可回收催化材料。Rh/Ni@CN（Rh 负载量：0.84 wt%）表现出最佳活性（周转频率：351 min ^-1) 用于从 AB 的水解脱氢中析出氢。最重要的是，这种催化剂可以通过磁铁简单地分离出来，并在 AB 完全转化为氢的情况下重复使用至少五次。两种金属之间的强相互作用和小尺寸的 Rh NPs 是提高 AB 水解脱氢催化活性的原因。这项工作为在催化应用中制造出色的催化剂提供了一种环保且有效的策略。