Catalysts based on metallic NPs have shown high activities in heterogeneous catalysis, due to their high fractions of surface-active atoms, which, however, will lead to the sacrifices in stability and recycle of catalysts. In order to balance well the relationship between activity, stability, and recovery, in this paper, we have constructed a 3D mesoporous sphere structure assembled by N-doped carbon coated Ni/Pd NP heterojunctions (Ni/Pd@N-C). This obtained Ni/Pd@N-C has shown high catalytic activity, durability and recyclability for the hydrolytic dehydrogenation of ammonia borane (AB). Further investigations, including experimental and theoretical results, have shown that the unique structural features, the synergistic effect between Ni and Pd, and the coating of N-doped carbon layer are responsible for the good catalytic performance of Ni/Pd@N-C mesoporous spheres.

中文翻译：

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用于氨硼烷脱氢的工程镍/钯异质结：利用3D介孔结构和外部氮掺杂碳层提高催化性能。

基于金属NP的催化剂由于其表面活性原子的比例很高，因此在多相催化中表现出很高的活性，然而，这会导致牺牲催化剂的稳定性和再循环性。为了很好地平衡活性，稳定性和恢复之间的关系，在本文中，我们构建了一个3D介孔球结构，该结构由N掺杂的碳包覆的Ni / Pd NP异质结（Ni / Pd @ NC）组装而成。所得的Ni / Pd @ NC对氨硼烷（AB）的水解脱氢显示出高催化活性，耐久性和可回收性。包括实验和理论结果在内的进一步研究表明，独特的结构特征，镍和钯之间的协同作用，