TY - JOUR
T1 - Mesoporous cobalto-cobaltic oxide modified glassy carbon electrode for simultaneous detection of hydroquinone and catechol
AU - Cui, Shiqiang
AU - Li, Li
AU - Ding, Yaping
AU - Zhang, Jiangjiang
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - The Co3O4 electro-catalysts with the mesoporous structure were prepared by the sacrificing template method. The chemical composition, structural and morphological characterizations of Co3O4 were examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption (BET). The electrochemical properties of the meso-Co3O4 were investigated by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) for the simultaneous detection of hydroquinone (HQ) and catechol (CC) in the phosphate buffer media (PBS). Based on the meso-Co3O4 modifier electrode, a sensitive electrochemical sensor for phenolic compounds was successfully fabricated. Under optimal conditions, the detection limits of HQ and CC were found to be 0.1 and 0.1 μΜ (S/N = 3), respectively. The outstanding catalytic capability of meso-Co3O4 catalysts may be associated with their large surface area provided by mesoporous structure.
AB - The Co3O4 electro-catalysts with the mesoporous structure were prepared by the sacrificing template method. The chemical composition, structural and morphological characterizations of Co3O4 were examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption (BET). The electrochemical properties of the meso-Co3O4 were investigated by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) for the simultaneous detection of hydroquinone (HQ) and catechol (CC) in the phosphate buffer media (PBS). Based on the meso-Co3O4 modifier electrode, a sensitive electrochemical sensor for phenolic compounds was successfully fabricated. Under optimal conditions, the detection limits of HQ and CC were found to be 0.1 and 0.1 μΜ (S/N = 3), respectively. The outstanding catalytic capability of meso-Co3O4 catalysts may be associated with their large surface area provided by mesoporous structure.
KW - Catechol
KW - Electrochemical sensor
KW - Hydroquinone
KW - Mesoporous CoO
KW - Simultaneous determination
UR - http://www.scopus.com/inward/record.url?scp=84993960868&partnerID=8YFLogxK
U2 - 10.1016/j.jelechem.2016.10.007
DO - 10.1016/j.jelechem.2016.10.007
M3 - Article
AN - SCOPUS:84993960868
SN - 1572-6657
VL - 782
SP - 225
EP - 232
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
ER -
