A new strategy for the sensitive electrochemical determination of nitrophenol isomers using β-cyclodextrin derivative-functionalized silicon carbide.
A new strategy for the sensitive electrochemical determination of nitrophenol isomers using β-cyclodextrin derivative-functionalized silicon carbide.
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使用β-环糊精衍生物-功能化碳化硅灵敏电化学测定硝基苯酚异构体的新策略
DOI：
10.1039/c7ra12715d
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发表时间：
2018-01-02
期刊：
影响因子：
3.9
通讯作者：
Li, Can-Peng
中科院分区：
文献类型：
--
作者：
Wu, Shilian;Fan, Shuangmei;Tan, Shuang;Wang, Jiaqiang;Li, Can-Peng
在本研究中，硫醇β-环糊精（SH-CD）和乙二胺β-环糊精（NH2-β-CD）同时接枝到Au NP沉积的羧基SiC（Au@CSiC）纳米复合材料的同一界面上。成功构建了一种利用SH-CD和NH2-β-CD功能化Au@SiC（Au@CSiC-SH/NH2-CD）纳米复合材料同时测定硝基苯酚异构体（邻硝基苯酚，o-NP；对硝基苯酚，p-NP）的电化学传感器。在最佳条件下，采用差分脉冲伏安法对0.01-150 μM浓度范围内的o-NP和p-NP进行定量。该传感器对o-NP和p-NP的检测限（S/N = 3）分别为0.019和0.023 μM，表明检测限较低。干扰研究结果表明，该传感器在NP异构体测定过程中没有受到类似芳香族化合物存在的影响，表现出较高的选择性。所提出的电化学传感平台已成功用于测定自来水中的 NP 异构体。该电化学传感器的低检测限和高选择性是由于Au@CSiC-SH/NH2-CD纳米复合材料的高表面积、优异的导电性以及SH-β-CD和NH2-β-CD更易识别（富集）的NP异构体分子。使用 β-环糊精衍生物功能化碳化硅同时电化学测定硝基苯酚异构体的图示。
In the present study, thiol β-cyclodextrin (SH-CD) and ethylenediamine β-cyclodextrin (NH2-β-CD) were simultaneously grafted on the same interface of an Au NP deposited carboxyl SiC (Au@CSiC) nanocomposite. An electrochemical sensor for the simultaneous determination of nitrophenol isomers (o-nitrophenol, o-NP; p-nitrophenol, p-NP) using SH-CD and NH2-β-CD functionalized Au@SiC (Au@CSiC-SH/NH2-CD) nanocomposite was successfully constructed. Differential pulse voltammetry was used to quantify o-NP and p-NP within the concentration range of 0.01–150 μM under the optimal conditions. The detection limit (S/N = 3) of the sensor was 0.019 and 0.023 μM for o-NP and p-NP, respectively, indicating a low detection limit. Interference study results demonstrated that the sensor was not affected in the presence of similar aromatic compounds during the determination of NP isomers, showing high selectivity. The proposed electrochemical sensing platform was successfully used to determine NP isomers in tap water. The low detection limit and high selectivity of the proposed electrochemical sensor were caused by the high surface area, the excellent conductivity, and the more recognized (enriched) NP isomer molecules by SH-β-CD and NH2-β-CD of the Au@CSiC-SH/NH2-CD nanocomposite. An illustration of simultaneous electrochemical determination of nitrophenol isomers using β-cyclodextrin derivative-functionalized silicon carbide.
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影响因子：
3.1
作者：
Uberoi, V;Bhattacharya, SK
通讯作者：
Bhattacharya, SK
影响因子：
13.6
作者：
Li, Junhua;Kuang, Daizhi;Liu, Mengqin
通讯作者：
Liu, Mengqin
影响因子：
12.6
作者：
Zhang, Zhen;Gu, Shuqing;Jiang, Lin
通讯作者：
Jiang, Lin
影响因子：
2.8
作者：
Oliveros, Alexandra;Guiseppi-Elie, Anthony;Saddow, Stephen E.
通讯作者：
Saddow, Stephen E.
DOI：
10.1007/s001289900966
发表时间：
1999-08-01
影响因子：
2.7
作者：
Saha, NC;Bhunia, F;Kaviraj, A
通讯作者：
Kaviraj, A