Enzyme-free hydrogen peroxide sensor based on Au@Ag@C core-double shell nanocomposites
作者： Yancai Li , Yayun Zhang , Yanmei Zhong , Shunxing Li
DOI: 10.1016/J.APSUSC.2015.04.102
关键词:
摘要: Abstract The well-designed Au@Ag@C core-double shell nanocomposites were synthesized via a facile method, and used to fabricate an enzyme-free amperometric hydrogen peroxide (H 2 O ) sensor. size, shape, elementary composition structure of the characterized by transmission electron microscope (TEM), energy-dispersed spectrum (EDS) X-ray diffraction (XRD). outermost layer was amorphous carbon, second Ag core Au. exhibit attractive activity for electrocatalytic reduction H according electrochemical experiments. It also demonstrates sensor possess well performance with wide linear range 5.0 μM 4.75 mM limit detection (LOD) as low 0.14 μM ( S / N = 3). Furthermore, interference from common interfering species, such glucose, ascorbic acid, dopamine uric acid can be effectively avoided. In word, are promising candidates
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