Ultrasensitive and simultaneous detection of hydroquinone, catechol and resorcinol based on the electrochemical co-reduction prepared Au-Pd nanoflower/reduced graphene oxide nanocomposite

A simple and efficient eletrochemical sensing platform for simultaneous detection of hydroquinone (HQ), catechol (CC) and resorcinol (RC) based on the Au-Pd bimetallic and graphene is described in this paper. The Au-Pd reduced graphene oxide (Au-Pd NF/rGO) was prepared by the electrochemical co-redu...

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Bibliographic Details
Published in:Electrochimica acta 2017-03, Vol.231, p.677-685
Main Authors: Chen, Yuan, Liu, Xiaoying, Zhang, Si, Yang, Liuqing, Liu, Meiling, Zhang, Youyu, Yao, Shouzhuo
Format: Article
Language:English
Subjects:
Au-Pd NF/rGO composite
bimetallic
Bimetals
Catalysis
Catalytic oxidation
Catechol
Cobalt
dihydroxybenzene isomers
Drinking water
electrochemical sensor
Energy dispersive X ray spectroscopy
Gold
Graphene
Hydroquinone
Isomers
Nanocomposites
Palladium
Reduction
Scanning electron microscopy
Sensors
simultaneous detection
Spectroscopic analysis
Studies
Voltammetry
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Summary:A simple and efficient eletrochemical sensing platform for simultaneous detection of hydroquinone (HQ), catechol (CC) and resorcinol (RC) based on the Au-Pd bimetallic and graphene is described in this paper. The Au-Pd reduced graphene oxide (Au-Pd NF/rGO) was prepared by the electrochemical co-reduction deposition via cyclic voltammetry method (CV). The Au-Pd NF/rGO nanocomposite was examined by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and electrochemical methods CV and differential pulse voltammety (DPV) study showed that the three dihydroxybenzene isomers can be catalytically oxidized and discriminated simultaneously on the Au-Pd NF/rGO/GCE. The presence of Pd makes the performance of the sensor superior to that of in the absence of it. Owing to the integrated superior conductivity and excellent catalytic property of Au-Pd NF/rGO, the sensitive and simultaneous detection of HQ, CC and RC was realized in the individual or triple-components solution based on the as proposed Au-Pd NF/rGO/GCE, which shows wide linear range and low detection limit. The detection of them in tap water, river water and lake water were also successfully performed and good recovery was obtained.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2017.02.060