Guan Keke, Zhu Qing, Huang Zhong, Huang Zhenxia, Zhang Haijun, Wang Junkai, Jia Quanli, Zhang Shaowei
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China.
Nanomaterials (Basel). 2022 Aug 30;12(17):2998. doi: 10.3390/nano12172998.
Recently, developing a cost-effective and high-performance catalyst is regarded as an urgent priority for hydrogen generation technology. In this work, ISOBAM-104 stabilized Co/Fe colloidal catalysts were prepared via a co-reduction method and used for the hydrogen generation from KBH hydrolysis. The obtained ISOBAM-104 stabilized CoFe colloidal catalysts exhibit an outstanding catalytic activity of 37,900 mL-H min g-Co, which is far higher than that of Fe or Co monometallic nanoparticles (MNPs). The apparent activation energy () of the as-prepared CoFe colloidal catalysts is only 14.6 ± 0.7 kJ mol, which is much lower than that of previous reported noble metal-based catalysts. The X-ray photoelectron spectroscopy results and density functional theory calculations demonstrate that the electron transfer between Fe and Co atoms is beneficial for the catalytic hydrolysis of KBH.
近年来，开发一种经济高效且高性能的催化剂被视为制氢技术的当务之急。在这项工作中，通过共还原法制备了ISOBAM - 104稳定的Co/Fe胶体催化剂，并将其用于硼氢化钾水解制氢。所制备的ISOBAM - 104稳定的CoFe胶体催化剂表现出37900 mL-H min g-Co的出色催化活性，远高于铁或钴单金属纳米颗粒（MNP）。所制备的CoFe胶体催化剂的表观活化能（）仅为14.6±0.7 kJ mol，远低于先前报道的贵金属基催化剂。X射线光电子能谱结果和密度泛函理论计算表明，Fe和Co原子之间的电子转移有利于硼氢化钾的催化水解。
