Towards Reproducible Fabrication of Nanometre‐Sized Carbon Electrodes: Optimisation of Automated Nanoelectrode Fabrication by Means of Transmission Electron Microscopy,ChemElectroChem

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Towards Reproducible Fabrication of Nanometre‐Sized Carbon Electrodes: Optimisation of Automated Nanoelectrode Fabrication by Means of Transmission Electron Microscopy
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-06-20 , DOI: 10.1002/celc.201800600
Patrick Wilde ₁ , Thomas Quast ₁ , Harshitha B. Aiyappa ₁ , Yen‐Ting Chen ₁ , Alexander Botz ₁ , Tsvetan Tarnev ₁ , Miriam Marquitan ₁ , Stephan Feldhege ₂ , Armin Lindner ₂ , Corina Andronescu ₁ , Wolfgang Schuhmann ₁

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The reproducible fabrication of nanometre‐sized carbon electrodes poses great challenges. Especially, the field of single entity electrochemistry has strict requirements regarding the geometry of these electrochemical probes. Herein, an automated setup for the fabrication of carbon nanoelectrodes based on the pyrolysis of a propane/butane gas mixture within pulled quartz capillaries by means of a moving heating coil is presented. It is shown that mere electrochemical characterisation with conventional redox mediators does not allow for a reliable assessment of the electrode's geometry and quality. Therefore, high‐throughput transmission electron microscopy is used in parallel to evaluate and optimise preparation parameters. Control of the latter gives access to three different electrode types: nanopipettes, nanosamplers and nanodisks.

中文翻译：

走向可重复制造的纳米级碳电极：借助透射电子显微镜优化自动纳米电极的制备

可重复制造的纳米级碳电极构成了巨大的挑战。特别是，单实体电化学领域对这些电化学探针的几何形状有严格的要求。在此，提出了一种基于移动的加热线圈对拉制石英毛细管中丙烷/丁烷气体混合物进行热解的，用于制造碳纳米电极的自动装置。结果表明，仅用常规的氧化还原介体进行电化学表征并不能可靠地评估电极的几何形状和质量。因此，并行使用高通量透射电子显微镜来评估和优化制备参数。通过控制后者，可以访问三种不同的电极类型：纳米移液器，纳米采样器和纳米盘。

更新日期：2018-06-20

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