催化作用
电化学
氧化还原
纳米材料
拉曼光谱
材料科学
纳米技术
化学
无机化学
电极
有机化学
物理化学
光学
物理
作者
Qie Fang,Hengjia Wang,Xiaoqian Wei,Yinjun Tang,Xin Luo,Weiqing Xu,Lili Hu,Wenling Gu,Chengzhou Zhu
标识
DOI:10.1002/adhm.202301073
摘要
Abstract Developing functional nanomaterials for nonenzymatic glucose electrochemical sensing platforms is vital and challenging from the perspective of pathology and physiology. Accurate identification of active sites and thorough investigation of catalytic mechanisms are critical prerequisites for the design of advanced catalysts for electrochemical sensing. Herein, Cu aerogels are synthesized as a model system for sensitive nonenzymatic glucose sensing. The resultant Cu aerogels exhibit good catalytic activity for glucose electrooxidation with high sensitivity and a low detection limit. Significantly, in situ electrochemical investigations and Raman characterizations reveal the catalytic mechanism of Cu‐based nonenzymatic glucose sensing. During the electrocatalytic oxidation of glucose, Cu(I) is electrochemically oxidized to generate Cu(II), and the resultant Cu(II) is spontaneously reduced back to Cu(I) by glucose, achieving the sustained Cu(I)/Cu(II) redox cycles. This study provides profound insights into the catalytic mechanism for nonenzymatic glucose sensing, which provides great potential guidance for a rational design of advanced catalysts in the future.
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