4.7 Article

Mesoporous Carbon and Ceria Nanoparticles Composite Modified Electrode for the Simultaneous Determination of Hydroquinone and Catechol

期刊

NANOMATERIALS
卷 9, 期 1, 页码 -

出版社

MDPI
DOI: 10.3390/nano9010054

关键词

mesoporous carbon and ceria nanoparticles composite; modified electrode; simultaneous determination; hydroquinone; catechol

资金

  1. Open Research Fund of the State Key Laboratory of Oil, Gas Reservoir Geology and Exploitation [PLN1115]
  2. Key Project of the Chinese Ministry of Education [213024A]
  3. China National Natural Science Foundation [51401150, 51574182, 51178360]

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In this work, a novel material that was based on mesoporous carbon and ceria nanoparticles composite (MC-CeNPs) was synthesized, and a modified electrode was fabricated. When compared with a bare glass electrode, the modified electrode exhibited enhanced electrocatalytic activity towards the simultaneous determination of hydroquinone (HQ) and catechol (CC), which is attributed to the large specific area and fast electron transfer ability of MC-CeNPs. Additionally, it exhibited linear response ranges in the concentrations of 0.5-500 mu M and 0.4-320 mu M for HQ and CC, with detection limits (S/N = 3) of 0.24 mu M and 0.13 mu M, respectively. This method also displayed good stability and reproducibility. Furthermore, the modified electrode was applied to the simultaneous determination of HQ and CC in tap and lake water samples, and it exhibited satisfactory recovery levels of 98.5-103.2% and 98-103.4% for HQ and CC, respectively. All of these results indicate that a MC-CeNPs modified electrode could be a candidate for the determination of HQ and CC.

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