Guan Shuyan, An Lulu, Chen Yumei, Li Mingbin, Shi Jianchao, Liu Xianyun, Fan Yanping, Li Baojun, Liu Baozhong
College of Chemistry and Chemical Engineering, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo 454000, PR China; College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou 450001, PR China.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo 454000, PR China.
J Colloid Interface Sci. 2022 Feb 15;608(Pt 3):3111-3120. doi: 10.1016/j.jcis.2021.11.041. Epub 2021 Nov 22.
The design and construction of transition metal catalysts with high performance and low-cost characteristics are imperative for liquid hydrogen storage materials. In this study, we prepared ultrathin carbon-stabilized Co-doped CoO nanofilms (C-Co/CoO NFs) using an ionic liquid/water interface strategy for sodium borohydride (NaBH) hydrolysis. Owing to its two-dimensional (2D) NF structure and the protective effects of the composite carbon, the C-Co/CoO NF catalyst exhibited remarkable activity and durability for hydrogen generation from NaBH hydrolysis. The hydrogen generation rate reached 8055 mL·min·g (5106 mL·min·g) and the catalyst could be recycled more than 20 times, surpassing most reported metal-based catalysts under comparable conditions. In addition, the exceptional 2D Co-based NF structures, with numerous active sites, assisted in the activation of NaBH and water molecules, promoting hydrogen production. Thus, these results provided an in-depth understanding of hydrogen generation from NaBH hydrolysis, and an effective strategy for rationally designing highly active and durable 2D NF catalysts.
对于液态储氢材料而言，设计和构建具有高性能和低成本特性的过渡金属催化剂势在必行。在本研究中，我们采用离子液体/水界面策略制备了用于硼氢化钠（NaBH）水解的超薄碳稳定钴掺杂氧化钴纳米薄膜（C-Co/CoO NFs）。由于其二维（2D）NF结构以及复合碳的保护作用，C-Co/CoO NF催化剂在硼氢化钠水解制氢方面表现出显著的活性和耐久性。产氢速率达到8055 mL·min·g（5106 mL·min·g），且该催化剂可循环使用20多次，在可比条件下超过了大多数已报道的金属基催化剂。此外，具有众多活性位点的特殊二维钴基NF结构有助于硼氢化钠和水分子的活化，促进产氢。因此，这些结果为深入理解硼氢化钠水解制氢提供了依据，并为合理设计高活性和耐用的二维NF催化剂提供了有效策略。
