新型不对称柱[5]芳烃与碳材料复合材料的电化学特性及其潜在的电化学应用

IF 2.6 4区 化学 Q3 ELECTROCHEMISTRY
Rezeda Shamagsumova, Karina Gayazova, Dmitriy Shurpik, Vladimir Evtugyn, Daniil Stoikov, Ivan Stoikov, Gennady Evtugyn
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引用次数: 0

摘要

采用循环伏安法首次研究了不同碳纳米材料(功能化多壁碳纳米管(fMWCNTs)、炭黑(CB)、电化学还原氧化石墨烯(ERGO))修饰的玻碳电极(GCE)表面上具有1个未取代对苯二酚基团和4个带有末端氨基取代基的8个取代基的不对称柱状[5]芳烃(P5A)的电化学行为。伏安图上的准可逆峰对归因于对苯二酚部分的氧化还原转化。改性GCE吸附的P5A保留了其超分子相互作用的能力,并表现出氧化还原介质的性质。这种效应通过在GCE/CB/P5A传感器表面积累l -酪氨酸后的测定得到证实。P5A与硝酸银盐相互作用形成银纳米颗粒。透射电镜(TEM)观察P5A-Ag层的形貌。由CB/P5A-Ag组成的纳米复合材料也在亚硝酸盐-阴离子氧化中进行了测试,结果表明其氧化还原电位降低了300 mV。采用伏安式GCE/CB/P5A-Ag传感器,在50µM ~ 0.1 mM的浓度范围内测定氯阴离子。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrochemical characteristics of composites based on novel asymmetric pillar[5]arene with carbon materials and their potential electrochemical applications

Electrochemical behavior of asymmetric pillar[5]arene (P5A) with one unsubstituted hydroquinone moiety and four ones with eight substituents bearing terminal amino groups was investigated for the first time on the surface of glassy carbon electrode (GCE) modified with various carbon nanomaterials (functionalized multi-walled carbon nanotubes (fMWCNTs), carbon black (CB), electrochemically reduced graphene oxide (ERGO)) by cyclic voltammetry. Quasi-reversible peak pair on voltammograms was attributed to the redox conversion of the hydroquinone moiety. P5A adsorbed at the modified GCE retained its ability to supramolecular interaction and demonstrated redox mediator properties. This effect was proved by the determination of L-tyrosine after its accumulation on the surface of GCE/CB/P5A sensor. The interaction between P5A and silver nitrate salt resulted in the formation of Ag nanoparticles. Morphology of P5A-Ag layers was assessed by transmission electron microscopy (TEM). Nanocomposite consisting of CB/P5A-Ag was also tested in nitrite-anion oxidation and demonstrated a reduction of the redox potential by up to 300 mV. Besides, a voltammetric GCE/CB/P5A-Ag sensor was used for chloride-anion determination in a concentration range from 50 µM to 0.1 mM.

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来源期刊
CiteScore
4.80
自引率
4.00%
发文量
227
审稿时长
4.1 months
期刊介绍: The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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