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首页> 外文期刊>Electroanalysis >Fe_3O_4 Microspheres and Graphene Oxide Encapsulated with Chitosan: A New Platform for Sensitive Determination of Hydroquinone and Catechol
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Fe_3O_4 Microspheres and Graphene Oxide Encapsulated with Chitosan: A New Platform for Sensitive Determination of Hydroquinone and Catechol

机译：Fe_3O_4微球和壳聚糖包裹的氧化石墨烯：灵敏测定对苯二酚和邻苯二酚的新平台

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摘要

A novel sensor for sensitive determination of hydroquinone (HQ) and catechol (CC) was proposed using a Fe_3O_4 microspheres-graphene oxide (Fe_3O_4-GO) composites modified glassy carbon electrode (GCE) which was further encapsulated with chitosan (Chit-Fe_3O_4-GO/GCE). The excellent electrocatalytic performance is probably related to the strong synergistic effect of the composites. The proposed sensor shows a linear response for HQ and CC in wide concentration ranges from 1.5 to 150 μM and 1 to 410 μM, with detection limits (S/N=3) of 20 and 250 nM, respectively. Additionally, the sensor exhibits good selectivity and stability in tap water samples.
机译：提出了一种使用Fe_3O_4微球-氧化石墨烯（Fe_3O_4-GO）复合修饰玻碳电极（GCE）并进一步用壳聚糖（Chit-Fe_3O_4-GO）封装的灵敏测定对苯二酚（HQ）和邻苯二酚（CC）的新型传感器。 / GCE）。优异的电催化性能可能与复合材料的强协同作用有关。所提出的传感器在1.5至150μM和1至410μM的宽浓度范围内对HQ和CC表现出线性响应，检测极限（S / N = 3）分别为20和250 nM。此外，该传感器在自来水样品中显示出良好的选择性和稳定性。

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