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首页> 外文期刊>Electroanalysis >Simultaneous Determination of Nitrophenol Isomers Based on β-Cyclodextrin Functionalized Reduced Graphene Oxide
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Simultaneous Determination of Nitrophenol Isomers Based on β-Cyclodextrin Functionalized Reduced Graphene Oxide

机译：基于β-环糊精官能化还原氧化石墨烯的同时测定硝基苯酚异构体

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摘要

β-CD modified reduced graphene oxide (RGO) sheets have been prepared and characterized by TEM, AFM, IR, EIS and CVs. In comparison with bare glass carbon electrode (GCE) and RGO modified GCE, CD-RGO/GCE showed much higher peak currents to the reduction of nitrophenol isomers (NPs), attributed to the larger specific surface area of RGO and high quantities of host-guest recognition sites. Three pairs of redox peaks are observed on the CVs of CD-RGO for p-NP (0.3V), o-NP (-0.2V) and m-NP (0.05V), separating well with each other. Under the optimized condition, the anodic peak currents were linear over ranges around 1-10mgdm ~(-3) for p-NP, 1-9mgdm ~(-3) for o-NP and 1-6mgdm ~(-3) for m-NP, with the detection limits of 0.05mgdm ~(-3), 0.02mgdm ~(-3) and 0.1mgdm ~(-3), respectively. Thus, the CD-RGO is expected to be a promising sensor material for detecting trace NPs in waste water.
机译：已经制备了β-CD改性的还原氧化石墨烯（RGO）片，并通过TEM，AFM，IR，EIS和CVs对其进行了表征。与裸玻璃碳电极（GCE）和RGO修饰的GCE相比，CD-RGO / GCE由于硝基苯酚异构体（NPs）的减少而显示出更高的峰值电流，这归因于RGO的比表面积较大和大量的主体访客识别网站。在CD-RGO的CV上观察到三对氧化还原峰，分别为p-NP（0.3V），o-NP（-0.2V）和m-NP（0.05V），并且彼此分离。在最佳条件下，p-NP的阳极峰值电流在1-10mgdm〜（-3），o-NP的1-9mgdm〜（-3）和1-6mgdm〜（-3）的范围内呈线性。 -NP，检出限分别为0.05mgdm〜（-3），0.02mgdm〜（-3）和0.1mgdm〜（-3）。因此，CD-RGO有望成为检测废水中痕量NP的有前途的传感器材料。

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