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Preparation and Characterization of Novel Choline and L ‐Glutamic Acid Mixed Monolayer Covalently Modified Glassy Carbon Electrode and Its Analytical Application to Nitrite Determination
Author(s) -
GuanPing Jin,
XiangQin Lin
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200590673
Subject(s) - chemistry , monolayer , dielectric spectroscopy , cyclic voltammetry , glassy carbon , covalent bond , chemically modified electrode , inorganic chemistry , x ray photoelectron spectroscopy , electrode , differential pulse voltammetry , self assembled monolayer , electrochemistry , organic chemistry , working electrode , chemical engineering , biochemistry , engineering
A choline and L ‐glutamic acid mixed monolayer covalently modified glassy carbon electrode (Ch‐Glu/GCE) was fabricated and characterized by X‐ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). It provided an excellent example of mixed covalent monolayer modification of carbon electrodes with alkanol and amino acid, and also a facile means for altering the interfacial architecture. The Ch‐Glu/GCE displayed good catalytic activity toward the oxidation of nitrite anions. Differential pulse voltammetry was used for determination of nitrite at the Ch‐Glu/GCE. The Ch‐Glu/GCE showed higher capability for restraint of pollutions than a simple Ch modified electrode or a simple Glu modified electrode.