用于工业析氢的具有强金属-载体相互作用的超小Ru-MoC@CNT的无溶剂微波合成
Solvent-free microwave synthesis of ultra-small Ru-MoC@CNT with strong metal-support interaction for industrial hydrogen evolution.
作者信息
Wu Xueke, Wang Zuochao, Zhang Dan, Qin Yingnan, Wang Minghui, Han Yi, Zhan Tianrong, Yang Bo, Li Shaoxiang, Lai Jianping, Wang Lei
机构信息
Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, P. R. China.
Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, P. R. China.
出版信息
Nat Commun. 2021 Jun 29;12(1):4018. doi: 10.1038/s41467-021-24322-2.
Exploring a simple, fast, solvent-free synthetic method for large-scale preparation of cheap, highly active electrocatalysts for industrial hydrogen evolution reaction is one of the most promising work today. In this work, a simple, fast and solvent-free microwave pyrolysis method is used to synthesize ultra-small (3.5 nm) Ru-MoC@CNT catalyst with heterogeneous structure and strong metal-support interaction in one step. The Ru-MoC@CNT catalyst only exhibits an overpotential of 15 mV at a current density of 10 mA cm, and exhibits a large turnover frequency value up to 21.9 s under an overpotential of 100 mV in 1.0 M KOH. In addition, this catalyst can reach high current densities of 500 mA cm and 1000 mA cm at low overpotentials of 56 mV and 78 mV respectively, and it displays high stability of 1000 h. This work provides a feasible way for the reasonable design of other large-scale production catalysts.
探索一种简单、快速、无溶剂的合成方法，用于大规模制备廉价、高活性的工业析氢反应电催化剂，是当今最有前景的工作之一。在这项工作中，采用一种简单、快速且无溶剂的微波热解方法，一步合成具有异质结构和强金属-载体相互作用的超小（3.5纳米）Ru-MoC@CNT催化剂。Ru-MoC@CNT催化剂在电流密度为10 mA cm时仅表现出15 mV的过电位，在1.0 M KOH中100 mV的过电位下表现出高达21.9 s的大周转频率值。此外，该催化剂在56 mV和78 mV的低过电位下分别可达到500 mA cm和1000 mA cm的高电流密度，并显示出1000小时的高稳定性。这项工作为合理设计其他大规模生产催化剂提供了一条可行的途径。
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