Selective and simultaneous determination of hydroquinone and catechol by using a nitrogen-doped bagasse activated carbon modified electrode

A glassy carbon electrode (GCE) modified with a nitrogen-doped activated carbon derived from sugarcane bagasse (NDSBAC) was prepared for the selective and simultaneous determination of hydroquinone (HQ) and catechol (CC). The NDSBAC was obtained via KOH-urea activated method. Scanning electron micro...

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Bibliographic Details
Published in:Materials chemistry and physics 2020-02, Vol.242, p.122525, Article 122525
Main Authors: Zheng, Xinyu, Fan, Rongrong, Hu, Yingcai, Zhong, Huining, Yang, Xingyue, Lv, Rixin, Yang, Xuan, Huang, Biao
Format: Article
Language:English
Subjects:
Activated carbon
Bagasse
Catechol
Chemical composition
Electrodes
Glassy carbon
Hydroquinone
Modified electrode
Morphology
Nitrogen-doped
Photoelectrons
Silver chloride
Sugarcane
Sugarcane bagasse
X ray photoelectron spectroscopy
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Summary:A glassy carbon electrode (GCE) modified with a nitrogen-doped activated carbon derived from sugarcane bagasse (NDSBAC) was prepared for the selective and simultaneous determination of hydroquinone (HQ) and catechol (CC). The NDSBAC was obtained via KOH-urea activated method. Scanning electron microscopy (SEM), Brunauer–Emmet–Teller (BET) and X-ray photoelectron spectroscopy (XPS) were employed to survey the surface morphology, adsorption properties and chemical compositions of NDSBAC, respectively. The anodic peak potential between HQ and CC is 112 ± 3 mV (vs. Ag/AgCl) at NDSBAC/GCE. The anode peak currents of HQ and CC depend linearly on their respective concentrations. NDSBAC/GCE shows wide linear ranges of 0.5–300.0 μM for both HQ and CC. The detection limits are 0.11 μM for HQ and 0.09 μM for CC. The recoveries of HQ and CC are 92.1%–109.5% and 98.0%–104.3%, respectively, in the testing of the spiked lake water. NDSBAC modified GCE can determine hydroquinone (HQ) and catechol (CC) independently with good analytical performances. [Display omitted] •NDSBAC possesses the merits of abundant raw material sources, simple processing technique and low production cost.•NDSBAC/GCE can independently and simultaneously determine hydroquinone and catechol in environmental sample.•The proposed method is superior to those carbon materials modified electrode reported in previous literatures.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2019.122525