硼氢化钠
催化作用
纳米材料基催化剂
水解
贵金属
咪唑酯
材料科学
化学工程
制氢
无机化学
沸石咪唑盐骨架
化学
金属有机骨架
吸附
有机化学
工程类
作者
Dongsheng Lu,Zhiping He,Changlin Zhong,Peng Lv,Weiliang Liu
标识
DOI:10.1021/acs.jpcc.3c00422
摘要
Designing an efficient catalyst for NaBH4 hydrolysis remains challenging. In this work, the Ni-Co nanocatalyst supported by the zeolitic imidazolate framework (NiCo/HZIF-8) was successfully prepared by an impregnation–chemical reduction method. The microstructure, catalytic activity, and durability of the nanocatalyst were investigated. The as-prepared NiCo/HZIF-8 nanocatalyst shows a hierarchical porous structure with high specific surface area and good dispersion for the metal nanoparticles (MNPs), which is beneficial to exposing active sites and promoting catalytic performance. The activation energy (Ea) for the hydrolysis of NaBH4 catalyzed by NiCo/HZIF-8 is as low as 32.01 kJ·mol–1, and the maximum turnover frequency (TOF) is 41,254 mLH2 · gM–1 · min–1, surpassing the performance of numerous non-noble metals and even some noble metal nanocatalysts. In addition, the NiCo/HZIF-8 nanocatalyst can retain 85.5% of its initial catalytic activity for NaBH4 hydrolysis after five cycles.
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