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Investigation of the direct electrochemistry and electrocatalysis of myoglobin on gold nanorods modified electrode
Author(s) -
Yin Chunxiao,
Weng Wenju,
Gao Rui,
Liu Juan,
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.201800415
Subject(s) - chemistry , electrochemistry , electrocatalyst , electrode , nafion , nanorod , myoglobin , inorganic chemistry , glassy carbon , electron transfer , amperometry , chemical engineering , cyclic voltammetry , photochemistry , organic chemistry , engineering
Direct electrochemistry and electrocatalysis of myoglobin (Mb) on a gold nanorod (AuNR)‐decorated carbon ionic liquid electrode (CILE) were studied in this article. The fabricated Nafion/Mb/AuNRs/CILE was used as an electrochemical biosensor for determining trichloroacetic acid (TCA) and sodium nitrite (NaNO 2 ). AuNRs exhibited high metal conductivity, and acted as the bridge between electrochemical active centers of Mb and the substrate electrode with the electron transfer rate accelerated. Electrochemical performances of Nafion/Mb/AuNRs/CILE were checked in pH 3.0 phosphate buffer solution with the electrochemical parameters calculated. Low detection limits and wide linear ranges were obtained in electrocatalytic investigations of different catalytic substrates including TCA and NaNO 2 , which exhibited potential applications in actual sample detection.