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首页> 美国卫生研究院文献>Polymers >The Electrochemical Oxidation of Hydroquinone and Catechol through a Novel Poly-geminal Dicationic Ionic Liquid (PGDIL)–TiO2 Composite Film Electrode
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The Electrochemical Oxidation of Hydroquinone and Catechol through a Novel Poly-geminal Dicationic Ionic Liquid (PGDIL)–TiO2 Composite Film Electrode

机译：新型聚二元正离子离子液体（PGDIL）-TiO2复合膜电极对苯二酚和邻苯二酚的电化学氧化

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摘要

A novel poly-geminal dicationic ionic liquid (PGDIL)-TiO /Au composite film electrode was successfully prepared by electrochemical polymerization of 1,4-bis(3-(m-aminobenzyl)imidazol-1-yl)butane bis(hexafluorinephosphate) containing polymerizable anilino groups in the electrolyte containing nano-TiO . The basic properties of PGDIL–TiO /Au composite films were studied by SEM, cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. The SEM results revealed that the PGDIL–TiO powder has a more uniform and smaller particle size than the PGDIL. The cyclic voltammetry results showed that the catalytic effect on electrochemical oxidation of hydroquinone and catechol of the PGDIL–TiO electrode is the best, yet the of PGDIL–TiO electrode is higher than that of PGDIL and TiO electrode, which is caused by the synergistic effect between TiO and PGDIL. The PGDIL–TiO /Au composite electrode presents a good enhancement effect on the reversible electrochemical oxidation of hydroquinone and catechol, and differential pulse voltammetry tests of the hydroquinone and catechol in a certain concentration range revealed that the PGDIL–TiO /Au electrode enables a high sensitivity to the differentiation and detection of hydroquinone and catechol. Furthermore, the electrochemical catalytic mechanism of the PGDIL–TiO /Au electrode was studied. It was found that the recombination of TiO improved the reversibility and activity of the PGDIL–TiO /Au electrode for the electrocatalytic reaction of HQ and CC. The PGDIL–TiO /Au electrode is also expected to be used for catalytic oxidation and detection of other organic pollutants containing –OH groups.
机译：通过含氟的1,4-双（3-（间氨基苄基）咪唑-1-基）丁烷双（六氟磷酸）的电化学聚合成功制备了新型多基离子型离子液体（PGDIL）-TiO / Au复合膜电极。含纳米TiO的电解质中可聚合的苯胺基。通过SEM，循环伏安法，电化学阻抗谱和差分脉冲伏安法研究了PGDIL-TiO / Au复合膜的基本性能。 SEM结果表明，PGDIL-TiO粉末比PGDIL具有更均匀，更小的粒径。循环伏安法结果表明，PGDIL-TiO电极对氢醌和邻苯二酚的电化学氧化的催化作用最好，而PGDIL-TiO电极却比PGDIL和TiO电极的对苯二酚的电化学氧化效果高。在TiO和PGDIL之间。 PGD​​IL-TiO / Au复合电极对氢醌和邻苯二酚的可逆电化学氧化具有良好的增强作用，并且在一定浓度范围内对苯二酚和邻苯二酚的差动脉冲伏安法测试表明，PGDIL-TiO / Au电极可实现较高的对苯二酚和邻苯二酚的鉴别和检测敏感。此外，研究了PGDIL-TiO / Au电极的电化学催化机理。研究发现，TiO的复合改善了PGDIL-TiO / Au电极对HQ和CC的电催化反应的可逆性和活性。 PGD​​IL-TiO / Au电极也有望用于催化氧化和检测其他含有-OH基团的有机污染物。

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