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Electrochemical Oxidation and Detection of Morphine at Ordered Mesoporous Carbon Modified Glassy Carbon Electrodes
Author(s) -
Bo Xiangjie,
Xie Wenlin,
Ndamanisha Jean Chrysostome,
Bai Jing,
Guo Liping
Publication year - 2009
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.200900265
Subject(s) - amperometry , materials science , electrochemistry , mesoporous material , mesoporous silica , glassy carbon , carbon fibers , hydrothermal circulation , detection limit , desorption , graphene , electrode , inorganic chemistry , adsorption , chemical engineering , nanotechnology , chemistry , catalysis , composite number , cyclic voltammetry , organic chemistry , chromatography , composite material , engineering
In this work, three ordered mesoporous carbons (OMCs) with different structural parameters were synthesized by a simple variation of the hydrothermal temperature of the silica templates (SBA‐15). X‐ray diffraction and nitrogen adsorption‐desorption results show these OMCs exhibit an ordered 2D hexagonal mesostructure with tunable pore diameter. OMC‐modified glassy carbon electrodes exhibit efficient electrocatalytic reactivity toward oxidation of morphine (MO). The amperometric detection of MO in pH 7.0 phosphate buffered saline at +0.39 V versus Ag/AgCl is the lowest potential reported to‐date. A linear range from 0.2 to 197.6 μM and a detection limit of 0.03 μM MO were obtained.