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Electrocatalytic oxidation and flow amperometric detection of hydrazine at an electropolymerized 4‐vinylpyridine/palladium film electrode
Author(s) -
Li Tao,
Wang Erkang
Publication year - 1997
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140091516
Subject(s) - amperometry , electrode , palladium , hydrazine (antidepressant) , palladium hydrogen electrode , materials science , chemically modified electrode , working electrode , detection limit , reference electrode , quinhydrone electrode , inorganic chemistry , polymer , glassy carbon , electrocatalyst , electrochemistry , chemistry , cyclic voltammetry , organic chemistry , catalysis , composite material , chromatography
Abstract A poly(4‐vinyl)pyridine (PVP)/Pd film electrode was constructed for the electrocatalytic detection of hydrazine. The preparation of the PVP/GC electrode was performed by electropolymerization of the monomer 4‐vinylpyridine onto the surface of a glassy carbon electrode. Subsequently, palladium is electrodeposited onto the polymer modified electrode surface. The ion‐exchange function of PVP polymer is helpful to this process in view of the tetrachlorapalladate anion. Compared with the Pd/GC electrode, the modified electrode displays a better mechanical stability in a flowing stream. The PVP/Pd film electrode exhibits higher sensitivity when detecting hydrazine with a detection limit of 0.026 ng ( S / N =3).