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A sensitive electrochemical sensor for detection of rutin based on a gold nanocage‐modified electrode
Author(s) -
Liu Juan,
Weng Wenju,
Yin Chunxiao,
Li Xiaobao,
Niu Yanyan,
Li Guangjiu,
Sun Wei
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800353
Subject(s) - nanocages , rutin , electrode , chemistry , detection limit , electrochemistry , cyclic voltammetry , differential pulse voltammetry , electrochemical gas sensor , voltammetry , analytical chemistry (journal) , chemical engineering , chromatography , organic chemistry , antioxidant , catalysis , engineering
In this article, an electrochemical sensor based on a gold nanocage (AuNC)‐modified carbon ionic liquid electrode (CILE) was fabricated and applied to the sensitive rutin determination. The presence of AuNCs on the electrode surface greatly improved the electrochemical performance of the working electrode due to its specific microstructure and high metal conductivity. Electrochemical behavior of rutin on AuNCs/CILE was studied using cyclic voltammetry and differential pulse voltammetry with the related electrochemical parameters calculated. Under the optimal experimental conditions, the oxidation peak current of rutin and its concentration had good linear relationship in the range from 4.0 × 10 −9 to 7.0 × 10 −4 mol/L with a low detection limit of 1.33 × 10 −9 mol/L (3 σ ). This fabricated AuNCs/CILE was applied to direct detection of the rutin concentration in drug samples with satisfactory results, showing the real application of AuNCs in the field of chemically modified electrodes.