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首页> 外文期刊>RSC Advances >Direct electrodeposition of cationic pillar[6]arene-modified graphene oxide composite films and their host–guest inclusions for enhanced electrochemical performance
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Direct electrodeposition of cationic pillar[6]arene-modified graphene oxide composite films and their host–guest inclusions for enhanced electrochemical performance

机译：阳离子柱的直接电沉积[6]芳烃改性的石墨烯氧化物复合薄膜及其宿主夹杂物，用于增强电化学性能

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摘要

In the present work, electrochemically reduced graphene oxide-cationic pillar[6]arene (ErGO-CP6) composite films on glassy carbon electrodes (GCEs) were prepared directly from graphene oxide-cationic pillar[6]arene (GO-CP6) dispersions by a facile one-step pulsed electrodeposition technique. The preparation of GO-CP6 and its subsequent electrochemical reduction were confirmed by Fourier transform infrared (FTIR) spectroscopy, UV-vis spectroscopy (UV-vis), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), zeta potential, Raman spectroscopy, and scanning electron microscopy (SEM). SEM result reveals that ErGO-CP6 could form a homogeneous film when GO-CP6 was electrodeposited on the surface of a GCE. Furthermore, Raman and XPS results confirm the removal of oxygen-containing functional groups present on the GO-CP6 surface after electrochemical reduction. Electrochemical results reveal that ErGO-CP6 films could show much higher electrochemical response to theophylline (TP), ascorbic acid (AA), acetaminophen (APAP), and folic acid (FA) than unmodified ErGO films and bare GCE, which is considered to be the synergistic effect of the graphene (excellent electrical properties and large surface area) and CP6 molecules (high inclusion complexation and enrichment capability).
机译：在本作工作中，直接由石墨烯氧化物柱[6]芳烃（GO-CP6）分散体制备玻璃碳电极（GCE）上的电化学还原氧化物阳离子柱[6]芳烃（ERGO-CP6）复合膜容易一步脉冲电沉积技术。通过傅立叶变换红外（FTIR）光谱，UV-Vis光谱（UV-VI），热重度分析（TGA），X射线光电子能谱（XPS），Zeta电位，通过傅立叶变换红外（FTIR）光谱法确认了Go-CP6及其随后的电化学还原。拉曼光谱和扫描电子显微镜（SEM）。 SEM结果表明，当GO-CP6电沉积在GCE的表面上时，ERGO-CP6可以形成均匀的薄膜。此外，拉曼和XPS结果证实在电化学还原后，在Go-CP6表面上除去含氧官能团。电化学结果表明，ERGO-CP6薄膜可以显示出与茶碱（TP），抗坏血酸（AA），乙酰氨基酚（APAP）和叶酸（FA）的电化学响应大得多，而不是未经修改的ERGO膜和裸GCE，这被认为是石墨烯（优异的电性能和大表面积）和CP6分子的协同效应（高包合物络合和富集能力）。

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