脱氧核酶
石墨烯
生物传感器
检出限
异质结
纳米技术
水溶液中的金属离子
材料科学
线性范围
光电子学
金属
电化学
电极
化学
色谱法
冶金
物理化学
作者
Jing Xu,Yinbing liu,Xinqi Luo,Yujin Li,Yiqing Xing,Ke‐Jing Huang
标识
DOI:10.1016/j.cej.2024.150151
摘要
Self-powered electrochemical biosensors based on enzyme biofuel cells (EBFC) are uniquely valuable in developing real-time and on-site detection of heavy metal ions. This work combines graphdiyne/graphene (GDY/GR) heterojunction with Deoxyribozyme (DNAzyme) trigger catalytic hairpin self-assembly (CHA) circuit. In addition, the smartphone is introduced to obtain the detection signals. The results show that the designed sensor platform can be used for single-tube ultrasensitive and visual lead ion detection with a wide linear range of 0.003–5000 nM and a low detection limit (LOD) of 0.005 nM. This design enriches the routine screening methods for heavy metal ions in food and environmental samples and introduces new idea for the development and application of self-powered electrochemical biosensors.
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