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Citation: LUO Qimei, WANG Huixian, LIU Dengyou. Simultaneous Determination of Catechol and Hydroquinone Based on Gold Electrode Modified with Carbon Nanotubes-graphene Nanosheet Hybrid Films[J]. Chinese Journal of Applied Chemistry, ;2014, 31(8): 983-989. doi: 10.3724/SP.J.1095.2014.30469 shu

Simultaneous Determination of Catechol and Hydroquinone Based on Gold Electrode Modified with Carbon Nanotubes-graphene Nanosheet Hybrid Films

1.
Science College of Hunan Agricultural University, Changsha 410128, China

Corresponding author: LIU Dengyou,
Received Date: 17 September 2013
Available Online: 27 November 2013

An electrochemical sensor for simultaneous determination of catechol(CC) and hydroquinone(HQ) based on carbon nanotubes(CNTs)-graphene nanosheet(GNS) hybrid film modified gold electrode(GE) was prepared. The electrochemical behavior of CC and HQ at the CNTs-GNS modified GE was investigated by cyclic voltammetry(CV). The results showed that the electrocatalytic activity of CC and HQ was significantly enhanced by the modification of CNTs-GNS hybrid films. The electrochemical sensor based on the hybrid modified GE exhibited excellent analytical performance for CC and HQ detection with a low detection limit of 5 nmol/L and 4.8 nmol/L(S/N=3),respectively,and a wide linear range of 0.5~600 μmol/L for both CC and HQ. Moreover,the CNTs-GNS/GE also showed good selectivity and stability.
- carbon nanotubes,
- graphene,
- nanosheets hybrid,
- catechol,
- hydroquinone
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