Device for detecting lead ions
A polypyrrole and electrode technology, applied in the field of heavy metal detection, can solve the problems of unfavorable heavy metal enrichment, easy stacking, high sensitivity, etc., achieve excellent electrochemical performance, reduce experimental cost, and improve the effect of electrical conductivity
Inactive Publication Date: 2018-07-17
TIANJIN UNIV
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Abstract
The invention discloses a device for detecting Pb<2+>. The device adopts a three-electrode system; a working electrode is a three-dimensional array electrode of a polypyrrole coated Co3O4 nanowire; anauxiliary electrode is a Pt wire electrode; a reference electrode is a Ag/AgCl electrode; acetic acid-sodium acetate serves as a buffer solution; the three-dimensional array electrode of the polypyrrole coated Co3O4 nanowire is a three-dimensional array prepared by taking foam copper as a base and loading polypyrrole coated Co3O4 nanowire on the base, the length of the Co3O4 nanowire is 1 to 1.8[mu]m, the diameter is 100 to 130 nm, the thickness of the polypyrrole coating layer is 10 to 15 nm, and the Co3O3 nanowire has a polycrystalline structure. The device reduces the experiment cost, issimple and convenient to operate, improves the conductivity of the Co3O4 by utilizing the three-dimensional array structure, increases the specific surface area and the active site of the electrode material, introduces the nitrogen-containing polypyrrole to further improve the conductivity of the electrode material, enables the nitrogen-containing group to be effectively complexed with the Pb<2+>,is favorable for Pb<2+> enrichment during detection, and further improves improvement on the Pb<2+> detection sensitivity and reduce on the detection limit by a sensor.
Application Domain
Material electrochemical variables
Technology Topic
Auxiliary electrodeIon +16
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PUM
Property | Measurement | Unit |
Length | 1.0 ~ 1.8 | µm |
Diameter | 100.0 ~ 130.0 | nm |
Thickness | 10.0 ~ 15.0 | nm |
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