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Electrochemical performance and electrocatalytic behavior of myoglobin on graphene tube‐modified electrode
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2019-11-28 , DOI: 10.1002/jccs.201900282 Yanyan Niu 1 , Xiaoyan Li 1 , Hui Xie 1 , Guiling Luo 1 , Ruyi Zou 1 , Yaru Xi 1 , Guangjiu Li 2 , Wei Sun 1
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2019-11-28 , DOI: 10.1002/jccs.201900282 Yanyan Niu 1 , Xiaoyan Li 1 , Hui Xie 1 , Guiling Luo 1 , Ruyi Zou 1 , Yaru Xi 1 , Guangjiu Li 2 , Wei Sun 1
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A new protein biosensing strategy based on a graphene tube (GT)‐modified electrode was developed in this article. GT as a fixed material and signal amplifier was loaded on the carbon ionic liquid electrode (CILE) surface, which could provide a suitable environment for myoglobin (Mb) immobilization and promote electron transfer between Mb and the electrode. Fourier‐transform infrared spectroscopy (FT‐IR) of Mb before and after mixing with GT was checked and showed that the native structure of Mb was maintained. The direct electrochemistry of Mb was investigated with a pair of obtained well‐defined and quasireversible redox peaks. The modified electrode (Nafion/Mb/GT/CILE) also showed excellent electrocatalytic activity for the reduction of trichloroacetic acid (TCA) and NaNO2, which could be utilized to determine the concentrations of TCA and NaNO2 with wide detection range and low detection limit. The biosensor was further applied to the detection of a real sample and obtained satisfactory experimental results.
中文翻译：
肌红蛋白在石墨烯管修饰电极上的电化学性能和电催化行为
本文开发了一种基于石墨烯管（GT）修饰电极的新型蛋白质生物传感策略。GT作为固定材料和信号放大器被装载在碳离子液体电极（CILE）的表面上，这可以为肌红蛋白（Mb）的固定提供合适的环境并促进Mb与电极之间的电子转移。在与GT混合之前和之后，对Mb进行傅立叶变换红外光谱（FT-IR）进行了检查，结果表明Mb的天然结构得以保留。用一对获得的明确定义的和准可逆的氧化还原峰研究了Mb的直接电化学。修饰电极（Nafion / Mb / GT / CILE）还显示出优异的电催化活性，可还原三氯乙酸（TCA）和NaNO 2可以用于测定TCA和NaNO 2的浓度，检测范围广，检测限低。该生物传感器进一步应用于真实样品的检测，并获得令人满意的实验结果。
更新日期：2019-11-28
中文翻译：
肌红蛋白在石墨烯管修饰电极上的电化学性能和电催化行为
本文开发了一种基于石墨烯管（GT）修饰电极的新型蛋白质生物传感策略。GT作为固定材料和信号放大器被装载在碳离子液体电极（CILE）的表面上，这可以为肌红蛋白（Mb）的固定提供合适的环境并促进Mb与电极之间的电子转移。在与GT混合之前和之后，对Mb进行傅立叶变换红外光谱（FT-IR）进行了检查，结果表明Mb的天然结构得以保留。用一对获得的明确定义的和准可逆的氧化还原峰研究了Mb的直接电化学。修饰电极（Nafion / Mb / GT / CILE）还显示出优异的电催化活性，可还原三氯乙酸（TCA）和NaNO 2可以用于测定TCA和NaNO 2的浓度，检测范围广，检测限低。该生物传感器进一步应用于真实样品的检测，并获得令人满意的实验结果。
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