Zhou Jingjing, Hu Shengchun, Wang Ao, Zhang Wenbo, Lu Yihang, Huang Yanjie, Li Baojun, Lee Jong-Min, Liu Yanyan, Jiang Jianchun
College of Science, Henan Agriculture University, 95 Wenhua Road, Zhengzhou, 450002, P. R. China.
Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, 210042, P. R. China.
Small. 2025 Sep;21(37):e03992. doi: 10.1002/smll.202503992. Epub 2025 Jul 25.
In the future hydrogen economy, the design of efficient catalysts with dual active sites is essential to promote catalytic hydrogen production. In this paper, CoN-CoO with core@shell structure supported on cotton stalk carbon (CoN-CoO@C) possessing dual-active sites of CoN and CoO is designed. The catalyst shows excellent catalytic activity for sodium borohydride (NaBH) hydrolysis with hydrogen evolution rate (r = 1408 mL min g ). The interfacial active site and carbon framework of catalyst improve the kinetics and catalytic stability of hydrogen generation. The structure of interfacial active sites in CoN-CoO@C facilitates the dissociation of reactants (NaBH and HO molecules), thus increasing the catalytic hydrogen generation from NaBH hydrolysis (CoN activates NaBH and CoO activates HO). This work provides a new method for the modification and application of cotton stalk waste-derived carbon materials. The construction of core@shell catalysts with dual active sites provides theoretical guidance for the rational design of advanced transition metal carbide materials. This discovery offers a novel perspective and direction for designing efficient functional catalysts.
在未来的氢经济中，设计具有双活性位点的高效催化剂对于促进催化制氢至关重要。本文设计了一种负载在棉秸秆碳上的具有核壳结构的CoN-CoO（CoN-CoO@C），其具有CoN和CoO双活性位点。该催化剂对硼氢化钠（NaBH）水解表现出优异的催化活性，析氢速率为r = 1408 mL min g。催化剂的界面活性位点和碳骨架提高了产氢的动力学和催化稳定性。CoN-CoO@C中界面活性位点的结构促进了反应物（NaBH和H₂O分子）的解离，从而增加了硼氢化钠水解的催化产氢量（CoN活化NaBH，CoO活化H₂O）。这项工作为棉秸秆废弃物衍生碳材料的改性和应用提供了一种新方法。具有双活性位点的核壳催化剂的构建为先进过渡金属碳化物材料的合理设计提供了理论指导。这一发现为设计高效功能催化剂提供了新的视角和方向。
