ZHANG Zi-wen,LI Lin,LI Hui-lin,CHEN Si-xuan,PAN Ming-fei.Electrochemical Sensor Based on MWCNTs and Co-Fe Bimetallic Prussian Blue Analogues for the Detection of H2O2 in Milk[J].Journal of Instrumental Analysis,2024,43(06):866-874.
ZHANG Zi-wen,LI Lin,LI Hui-lin,CHEN Si-xuan,PAN Ming-fei.Electrochemical Sensor Based on MWCNTs and Co-Fe Bimetallic Prussian Blue Analogues for the Detection of H2O2 in Milk[J].Journal of Instrumental Analysis,2024,43(06):866-874. DOI: 10.12452/j.fxcsxb.24021101.
Electrochemical Sensor Based on MWCNTs and Co-Fe Bimetallic Prussian Blue Analogues for the Detection of H2O2 in Milk
In this study,an enzyme-free electrochemical sensor(NF/Co-FePBA/MWCNTs/GCE)was developed by modifying a glassy carbon electrode(GCE) with Co-Fe bimetallic Prussian blue analog(Co-FePBA) and multi-walled carbon nanotubes(MWCNTs). The Co-FePBA acting as a hydrogen p
eroxide-mimicking enzyme,electrocatalytically reduced H
2
O
2
,generating a strong current response,for the rapid and sensitive electrochemical detection of H
2
O
2
in milk. Under optimal conditions,the sensor demonstrated a broad linear range(0.01 - 5.0 mmol/L) and a low limit of detection(LOD=0.52 μmol/L,
S
/
N
=3) for the current response to H
2
O
2
. Furthermore,the sensor exhibited strong anti-interference ability and good repeatability,reproducibility and stability. In milk sample detection,the sensor yielded recoveries ranging from 91.3% to 103% with relative standard deviation(RSD) ≤2.7%(
n
=3). This electrochemical method enables a low-cost,simple,rapid and highly sensitive detection of H
2
O
2
in milk.
关键词
多壁碳纳米管Co-Fe双金属普鲁士蓝类似物电化学传感过氧化氢牛奶样品
Keywords
MWCNTsCo-Fe bimetallic Prussian blue analogueselectrochemical sensingH2O2milk samples
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