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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >Evaluation of the electroanalytical performance of carbon-on-gold films prepared by electron-beam evaporation
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Evaluation of the electroanalytical performance of carbon-on-gold films prepared by electron-beam evaporation

机译：通过电子束蒸发制备的碳上碳上的电解性能的评价

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摘要

Carbon film electrodes can often be used without pretreatment, and their fabrication allows for flexibility in size and shape and for mass production. In this work, we are exploring layered structures comprised of thin films of carbon on gold (eC/Au) prepared by electron-beam evaporation. These extremely flat films are not pyrolyzed and are comprised of mainly amorphous carbon but still exhibit reasonable conductivity due to the underlying gold layer. eC/Au electrodes, without any pretreatment, yield similar heterogeneous electron-transfer rates for benchmark redox systems and significantly lower background current in comparison with polished glassy carbon. Interestingly, they show insignificant adsorption of quinones, which is uncommon for most carbon electrode materials. However, eC/Au is still prone to adsorption of airborne hydrocarbons when exposed to ambient air like most graphitic materials. With reproducibly fast electron transfer kinetics, low background current, negligible adsorption, and ultraflat surface, eC/Au films are a promising candidate for electrochemical and sensor applications.
机译：通常可以在没有预处理的情况下使用碳膜电极，并且它们的制造允许柔韧性尺寸和形状和批量生产。在这项工作中，我们正在探索由电子束蒸发制备的金（EC / Au）上的碳的薄膜组成的分层结构。这些极平的薄膜不会热解，并且主要由非晶碳组成，但由于下面的金层，仍然表现出合理的导电性。 EC / AU电极，没有任何预处理，产生类似于基准氧化还原系统的异构电子传递速率，与抛光玻璃碳相比，显着降低的背景电流。有趣的是，它们表现出对大多数碳电极材料的不显着的Quinones吸附，这是罕见的。然而，当暴露于大多数石墨材料时，EC / AU仍然容易发生空气传播烃的吸附。通过可重复的快速电子转移动力学，低背景电流，可忽略不计的吸附和超薄表面，EC / Au薄膜是用于电化学和传感器应用的有希望的候选者。

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