Amperometric sensing of ascorbic acid by using a glassy carbon electrode modified with mesoporous carbon nanorods
Amperometric sensing of ascorbic acid by using a glassy carbon electrode modified with mesoporous carbon nanorods
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使用介孔碳纳米棒修饰的玻碳电极对抗坏血酸进行电流传感
DOI：
10.1007/s00604-018-3010-4
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发表时间：
2018-09
影响因子：
5.7
通讯作者：
Zhou M.
中科院分区：
文献类型：
--
作者：
Li X.;Liu J.;Sun M.;Sha T.;Bo X.;Zhou M.
以蜂蜜为碳源，蟹壳为硬模板制备了介孔碳纳米棒。通过氮吸附-脱附等温线、X射线衍射、拉曼光谱、X射线光电子能谱和傅里叶变换红外光谱等表征手段对MCNR的独特纳米结构进行了表征。与传统的玻碳电极和碳纳米管修饰的玻碳电极相比，用MCNR修饰的玻碳电极（GCE）的循环伏安图揭示了抗坏血酸（AA）电氧化的更高的峰电流密度和更低的峰电位（−0.03 V vs. Ag/AgCl）。该传感器的优点包括（a）宽线性范围（10-2770 μM），（B）高电化学灵敏度（216.91 μA mM−1cm−2）和（c）低检测限（2.3 μM）。与CNT修饰的GCE（50-2150 μM，5.20 μA mM−1cm− 2和26.8 μM）和普通GCE（100-2000 μM，0.58 μA mM−1cm− 2和54.6 μM）的相应数据相比，这些结果是有利的。该方法已成功地应用于注射液、软饮料和新鲜柠檬汁等真实的样品中AA的测定。因此，新的传感器可以被认为是一个负担得起的工具，用于电化学传感的AA在真实的samples.Graphical摘要以蜂蜜为碳源，蟹壳为硬模板，制备了介孔碳纳米棒（MCNR）。将MCNRs修饰玻碳电极（MCNRs/GCE）用于抗坏血酸（AA）的安培检测。
Mesoporous carbon nanorods (MCNRs) were prepared from honey as the carbon source and by using crab (Brachyuran) shells as the hard template. The unique nanostructure of the MCNRs with their uniform mesoporous size, abundant defective sites and numerous oxygen-functional groups was characterized by nitrogen adsorption-desorption isotherms, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Cyclic voltammograms of a glassy carbon electrode (GCE) modified with MCNRs revel a higher peak current density and lower peak potential (−0.03 V vs. Ag/AgCl) for ascorbic acid (AA) electrooxidation compared to a conventional GCE and a carbon nanotube-modified GCE. Figures of merit for this sensor include (a) a wide linear range (10–2770 μM), (b) high electrochemical sensitivity (216.91 μA mM−1cm−2) and (c) a low detection limit (2.3 μM). These compare favorably to the respective data for a CNT-modified GCE (50–2150 μM, 5.20 μA mM−1cm−2and 26.8 μM) and a plain GCE (100–2000 μM, 0.58 μA mM−1cm−2and 54.6 μM). The modified GCE was successfully applied to the determination of AA in (spiked) real samples including an injection, soft drinks and fresh lemon juice. Therefore, the new sensor can be considered as an affordable tool for electrochemical sensing of AA in real samples.Graphical abstractMesoporous carbon nanorods (MCNRs) were prepared by using honey as the carbon source and crab shells as the hard template. The MCNRs modified a glassy carbon electrode (MCNRs/GCE) was used for the ascorbic acid (AA) detection by amperometry.
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影响因子：
5.7
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
Briscoe, Joe;Marinovic, Adam;Titirici, Magdalena
通讯作者：
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