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1.四川省农业科学院农业质量标准与检测技术研究所,四川 成都 610066
2.四川大学 化学学院, 四川 成都 610064
王凤怡,博士,研究方向:化学与生物传感、电化学、农产品污染物检测及质量安全风险评估,E-mail:wangfengyichem@163.com
纸质出版日期:2024-12-15,
收稿日期:2024-05-11,
修回日期:2024-06-16,
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王凤怡,郑保战,杜娟,杨晓凤,侯雪,贺光云,覃蜀迪.铋/蜂窝状碳纳米纤维的制备及其对过氧化氢的电化学高灵敏检测[J].分析测试学报,2024,43(12):1937-1943.
WANG Feng-yi,ZHENG Bao-zhan,DU Juan,YANG Xiao-feng,HOU Xue,HE Guang-yun,QIN Shu-di.Preparation of Bismuth/Honeycomb-like Carbon Nanofibers and Its Electrochemical Sensitive Detection of Hydrogen Peroxide[J].Journal of Instrumental Analysis,2024,43(12):1937-1943.
王凤怡,郑保战,杜娟,杨晓凤,侯雪,贺光云,覃蜀迪.铋/蜂窝状碳纳米纤维的制备及其对过氧化氢的电化学高灵敏检测[J].分析测试学报,2024,43(12):1937-1943. DOI: 10.12452/j.fxcsxb.24051134.
WANG Feng-yi,ZHENG Bao-zhan,DU Juan,YANG Xiao-feng,HOU Xue,HE Guang-yun,QIN Shu-di.Preparation of Bismuth/Honeycomb-like Carbon Nanofibers and Its Electrochemical Sensitive Detection of Hydrogen Peroxide[J].Journal of Instrumental Analysis,2024,43(12):1937-1943. DOI: 10.12452/j.fxcsxb.24051134.
利用静电纺丝技术制备具有连续大孔结构的蜂窝状碳纳米纤维(HCNFs),通过水热法将铋纳米颗粒(Bi NPs)修饰在HCNFs,构建无酶电化学传感器(Bi/HCNFs)用于过氧化氢(H
2
O
2
)电化学检测。通过扫描电子显微镜(SEM)和透射电子显微镜(TEM)对材料形貌进行表征,采用循环伏安法(CV)研究Bi/HCNFs修饰材料对H
2
O
2
的电催化行为,并对缓冲溶液的pH值以及工作电位等进行优化。在最佳条件下,通过计时电流法(
I~t
)测定传感器对H
2
O
2
的电催化性能,其在0.1~100 μmol·L
-1
浓度范围内表现出优异的电化学性能,检出限低至42 nmol·L
-1
,灵敏度为1 099.6 μA·L·mmol
-1
·cm
-2
;实际水样中H
2
O
2
的回收率为97.2%~102%。该传感器对H
2
O
2
检测表现出优异的重现性、稳定性以及实用性,具有良好的应用前景。
Honeycomb-like carbon nanofibers(HCNFs) with continuous macroporous structure have been successfully prepared through electrospun technology. After that,Bi NPs were uniformly loaded on HCNFs forming composite(Bi/HCNFs) prepared by hydrothermal process,constructing an enzyme-free electrochemical sensor(Bi/HCNFs) for the electrochemical detection of hydrogen peroxide(H
2
O
2
). The morphology of the materials was characterized by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). Furthermore,cyclic voltammetry(CV) was used to investigate the electrocatalytic behavior of Bi/HCNFs modified materials on H
2
O
2
,and pH of the buffer solution and working potential were optimized. The electrocatalytic performance of the sensor on H
2
O
2
was measured by chronoamperometry method(
I-t
) under the optimal conditions. In the concentration range of 0.1-100 μmol·L
-1
,the sensor exhibited excellent electrochemical performance,the detection limit was as low as 42 nmol·L
-1
,and the sensitivity was 1 099.6 μA·L·mmol
-1
·cm
-2
. It also shows excellent reproducibility,stability and practicability in response to H
2
O
2
,and the recoveries of practical water samples was 97.2%-102%,which has a good application prospect.
蜂窝状碳纳米纤维铋纳米颗粒电化学传感器过氧化氢
honeycomb-like carbon nanofibersbismuth nanoparticleselectrochemical sensorhydrogen peroxide
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