Diamond ultramicroelectrodes
Diamond ultramicroelectrodes
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金刚石超微电极
DOI：
10.1002/pssa.200776329
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Foord J
中科院分区：
文献类型：
--
作者：
Foord J
采用热丝化学气相沉积法制备了导电金刚石的超微电极针尖。通过改变生长条件，可以制造出非常光滑的纳米晶涂层或相对粗糙的微晶沉积物。在二茂铁甲醇溶液中记录了循环伏安法数据，以表征两种类型的金刚石。纳米晶金刚石在电势窗口和背景电流方面表现出较差的性能。研究了两种不同的绝缘方法来完成微电极的制备过程。人们发现涂指甲油最容易，效果最好。快速固化环氧树脂电极，具有较差的伏安特性。测定了不同条件下电极的电化学接近曲线。（©2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim）
Ultramicroelectrode (UME) tips from conductive diamond were fabricated by hot filament chemical vapour deposition. By changing growth conditions, it was possible to fabricate tips with very smooth nanocrystalline coatings, or relatively rough microcrystalline deposits. Cyclic voltammetry data in ferrocene methanol solution was recorded to characterise the two types of diamond. Nanocrystalline diamond displayed inferior behaviour, both in terms of the potential window, and the background current. Two types of insulation method were studied to complete the microelectrode fabrication process. Nail varnish was found to be easiest to apply and produce the best results. Fast set epoxy produced electrodes with inferior voltammetric characteristics. Electrochemical approach curves were measured under differing conditions for the electrodes studied. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)