Over the recent decades, conducting polymers have received great interest in many fields including microelectronics, energy conversion devices, and biosensing due to their unique properties like electrical conductivity, stability, and simple synthesis. Modification of conducting polymers with noble metals e.g. gold enhances their properties and opens new opportunities to also apply them in other fields like electrocatalysis. Here, we focus on the synthesis of hybrid material based on polyindole (PIN) nanobrush modified with gold nanoparticles and its application towards electrooxidation of ethanol. The paper presents systematic studies from synthesis to electrochemical sensing applications. For the characterization of PIN–Au composites, scanning electron microscopy and X-ray diffraction analyses were used. The electrocatalytic performance of the proposed hybrid material towards alcohol oxidation was studied in alkaline media by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy techniques. The results show that PIN–Au hybrid can be employed as an effective and sensitive platform for the detection of alcohols, which makes it a promising material in electrocatalysis or sensors. Moreover, the proposed composite exhibits electrocatalytic activity towards ethanol oxidation, which combined with its good long-term stability opens the opportunity for its application in fuel cells.

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定义明确的聚吲哚-Au NPs纳米刷作为乙醇电化学氧化的平台

在最近的几十年中，导电聚合物由于其独特的特性（如电导率，稳定性和简单的合成）而在许多领域引起了极大的兴趣，包括微电子学，能量转换器件和生物传感。用贵金属（例如金）对导电聚合物进行改性可以增强其性能，并为将其应用于电催化等其他领域提供新的机会。在这里，我们专注于基于金纳米粒子修饰的聚吲哚（PIN）纳米刷的杂化材料的合成及其在乙醇电氧化中的应用。本文介绍了从合成到电化学传感应用的系统研究。为了表征PIN-Au复合材料，使用了扫描电子显微镜和X射线衍射分析。在碱性介质中，通过循环伏安法，计时电流法和电化学阻抗谱技术研究了所提出的杂化材料对醇氧化的电催化性能。结果表明，PIN-Au杂化物可以用作检测酒精的有效且灵敏的平台，这使其成为电催化或传感器中有希望的材料。此外，拟议的复合材料表现出对乙醇氧化的电催化活性，再加上其良好的长期稳定性，为其在燃料电池中的应用提供了机会。结果表明，PIN-Au杂化物可以用作检测酒精的有效且灵敏的平台，这使其成为电催化或传感器中有希望的材料。此外，拟议的复合材料表现出对乙醇氧化的电催化活性，再加上其良好的长期稳定性，为其在燃料电池中的应用提供了机会。结果表明，PIN-Au杂化物可以用作检测酒精的有效且灵敏的平台，这使其成为电催化或传感器中有希望的材料。此外，拟议的复合材料表现出对乙醇氧化的电催化活性，再加上其良好的长期稳定性，为其在燃料电池中的应用提供了机会。