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One‐Step Electrodeposition of Polyallylamine‐Functionalized Gold Nanodendrites and Their Application in Sensing
Author(s) -
Li Pan,
Huang Tan,
Yang Jie,
Wei Shaohua,
Cai Chenxin,
Chen Yu,
Lee JongMin
Publication year - 2015
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201500072
Subject(s) - x ray photoelectron spectroscopy , iodate , ruthenium , electrochemistry , detection limit , materials science , electrode , spectroscopy , chemistry , inorganic chemistry , nanotechnology , chemical engineering , catalysis , iodide , organic chemistry , physics , chromatography , quantum mechanics , engineering
The three‐dimensional polyallylamine (PAH)‐functionalized gold nanodendrites (PAH‐3D‐Au‐NDs) were successfully synthesized through a simple, one‐step electrodeposition method. SEM, TEM, energy‐dispersive spectrum mapping, and X‐ray photoelectron spectroscopy measurements were used to characterize the morphology, structure, and composition of PAH‐3D‐Au‐NDs. The PAH‐3D‐Au‐NDs were then used as the functional interface to effectively immobilize the ruthenium(III) ion through coordination interactions between the ruthenium(III) ion and PAH. The obtained Ru III /PAH‐3D‐Au‐NDs/Au electrode showed excellent electrocatalytic activity towards iodate reduction. With the use of PAH‐3D‐Au‐NDs, the proposed iodate electrochemical sensor displayed a fast response (less than 3 s), wide linear range (4.99×10 −8 to 8.50×10 −4 M ), and low detection limit (1.66×10 −8 M ).