Zhao Qiang, Gui Zhenzheng, Xu Zhaoyue, Hu Jiaxue, Liu Xiaojing, Xia Haian, Zhang Peng, Chen Yuhui, Wang Fenfen
State Key Laboratory of Materials-oriented Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu, 211816, China.
Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Small. 2025 Jul 31:e04985. doi: 10.1002/smll.202504985.
Electrocatalytic of biomass-derived glucose into formic acid integrated with hydrogen generation represents a highly advantageous strategy for sustainable biomass utilization and carbon neutrality, but is frequently hindered by high energy demands and suboptimal conversion efficiency. Herein, a CuO-CoMOF/NF catalyst is reported, comprising a rough nanorod array CuO grown on nickel foam (NF) and decorated with Co-Metal-Organic Framework (Co-MOF), which demonstrates extraordinary performance and stability at a low potential of 1.45 V (vs RHE), achieving a Faradaic efficiency (FE) of 98.5% and a formic acid production rate of 1.4 mmol cm h, significantly outperforming that of CuO/NF catalyst. The remarkable performance is primarily attributed to the instantaneous formation of CoOOH active species on the surface of the catalyst, which synergistically promotes the swift consumption of glucose through spontaneous chemical reactions, enhancing charge transfer and optimizing the adsorption behavior of the catalyst. Notably, at a current density of 10 mA cm, the voltage requires for a two-electrode electrolyzer is 494 mV lower than that for conventional overall water splitting. This study offers new perspectives for the rational design of electrocatalysts for the efficient conversion of biomass-derived alcohols into value-added chemicals while simultaneously generating hydrogen.
将生物质衍生的葡萄糖电催化转化为甲酸并同时产氢是实现可持续生物质利用和碳中和的极具优势的策略，但常常受到高能量需求和次优转化效率的阻碍。在此，报道了一种CuO-CoMOF/NF催化剂，它由生长在泡沫镍（NF）上的粗糙纳米棒阵列CuO组成，并装饰有钴金属有机框架（Co-MOF），该催化剂在1.45 V（相对于可逆氢电极）的低电位下表现出非凡的性能和稳定性，法拉第效率（FE）达到98.5%，甲酸产率为1.4 mmol cm⁻² h⁻¹，显著优于CuO/NF催化剂。其卓越性能主要归因于催化剂表面瞬间形成的CoOOH活性物种，它通过自发化学反应协同促进葡萄糖的快速消耗，增强电荷转移并优化催化剂的吸附行为。值得注意的是，在电流密度为10 mA cm⁻²时，两电极电解槽所需电压比传统全水分解低494 mV。这项研究为合理设计电催化剂提供了新的视角，以实现将生物质衍生的醇高效转化为增值化学品并同时产氢。
