双金属片
生物传感器
检出限
纳米材料
介孔材料
材料科学
合金
纳米技术
电化学
催化作用
化学工程
化学
电极
色谱法
金属
冶金
有机化学
物理化学
工程类
作者
Yunxia Yang,Dan Yu,Xiaoyue Xu,Zhao Yisong,Yuping Mi,Faming Gao
标识
DOI:10.1016/j.ab.2022.114726
摘要
Bimetallic nanomaterials with various dimensions have been successfully explored in electrochemical biosensor to detect the carbamate pesticide. One-dimensional bimetallic nanomaterials with mesoporous, which possess bigger electrochemical active area, more catalytic active sites and faster electron transmission efficiency, may have excellent performance in electrochemical biosensor, but have been rarely reported. In order to confirm this hypothesis, one-dimensional PdRh alloy mesoporous nanotubes were prepared and applied as a platform for carbamate pesticide electrochemical detection. Upon optimum conditions, the constructed AChE sensor showed an ultrahigh sensitivity (0.279 μA/nM), a wide linear range (9.44 × 10-8 - 0.944 mg/L) and a low detection limit (9.44 × 10-8 mg/L) for carbaryl. And the biosensor exhibited outstanding anti-interference ability, precision and stability. Moreover, the actual sample detection of the biosensor has been demonstrated with a satisfactory recovery (94.01%-102.80%). The remarkable property may attribute to the integrated advantages of one-dimensional mesoporous structure and bimetallic alloy.
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