PdCo alloy nanoparticle–embedded carbon nanofiber for ultrasensitive nonenzymatic detection of hydrogen peroxide and nitrite

[Display omitted] PdCo alloy nanoparticle–embedded carbon nanofiber (PdCo/CNF) prepared by electrospinning and thermal treatment was employed as a high-performance platform for the determination of hydrogen peroxide and nitrite. The as-obtained PdCo/CNF were characterized by transmission electron mi...

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Bibliographic Details
Published in:Journal of colloid and interface science 2015-07, Vol.450, p.168-173
Main Authors: Liu, Dong, Guo, Qiaohui, Zhang, Xueping, Hou, Haoqing, You, Tianyan
Format: Article
Language:English
Subjects:
Alloys - chemistry
Biosensor
Carbon - chemistry
Carbon nanofiber
Cobalt - chemistry
Electrochemistry
Hydrogen Peroxide - analysis
Metal Nanoparticles
Nanofibers - chemistry
Nitrites - analysis
Palladium - chemistry
PdCo alloy nanoparticle
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Summary:[Display omitted] PdCo alloy nanoparticle–embedded carbon nanofiber (PdCo/CNF) prepared by electrospinning and thermal treatment was employed as a high-performance platform for the determination of hydrogen peroxide and nitrite. The as-obtained PdCo/CNF were characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. Electrochemical impedance spectroscopy, cyclic voltammetry and differential pulse voltammetry were employed to investigate the electrochemical behaviors of the resultant biosensor. The proposed PdCo/CNF-based biosensor showed excellent analytical performances toward hydrogen peroxide (detection limit: 0.1μM; linear range: 0.2μM–23.5mM) and nitrite (detection limit: 0.2μM; linear range: 0.4–30μM and 30–400μM). The superior analytical properties could be attributed to the synergic effect and firmly embedment of well-dispersed PdCo alloy nanoparticles. These attractive electrochemical properties make this robust electrode material promising for the development of effective electrochemical sensors.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2015.03.014