Abstract
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 µM and 0.4–320 µM for HQ and CC, with detection limits (S/N = 3) of 0.24 µM and 0.13 µM, 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.
Highlights
Hydroquinone (HQ) and catechol (CC) are two isomers of dihydroxybenzene and they are introduced into the environment during their extensive use as important raw materials and intermediates [1]
Figure depicts that Mesoporous carbon (MC)–ceria nanoparticles (CeNPs) tend to form a more more wholea structure when compared with the MC,1b and few layers could be observed
The MC–CeNPs nanocomposite was synthesized via the evaporation induced self-assembly (EISA) method
Summary
Hydroquinone (HQ) and catechol (CC) are two isomers of dihydroxybenzene and they are introduced into the environment during their extensive use as important raw materials and intermediates [1]. The two isomers have overlapped redox silica potentials a conventional2 [15], and carbon nano–fragments have been used modify electrodes to overcome these shortages, electrode [12], and another[16], significant obstacle is to that the relationship between the electrochemical and the resulting electrodes have exhibited good detection. These materials signal and concentration might be nonlinear. Fabrication of the mesoporous carbon and ceria nanoparticles composite (MC–CeNPs) modified electrode and the simultaneous detection of hydroquinone (HQ) and catechol (CC)
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