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首页> 外文期刊>Electrocatalysis >Design and Development of Instrumentations for the Preparation of Platinum Single Crystals for Electrochemistry and Electrocatalysis Research Part 3: Final Treatment, Electrochemical Measurements, and Recommended Laboratory Practices
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Design and Development of Instrumentations for the Preparation of Platinum Single Crystals for Electrochemistry and Electrocatalysis Research Part 3: Final Treatment, Electrochemical Measurements, and Recommended Laboratory Practices

机译：用于制备电化学和电催化研究的铂晶体仪器仪器的设计与开发第3部分：最终处理，电化学测量和推荐的实验室实践

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In this contribution, which is the final paper in a topic-focused series of three papers, we report on the development of experimental methodology that is applied to acquire cyclic voltammetry (CV) profiles for hemispherical Pt(111), Pt(110), and Pt(100) as well as polyoriented monocrystalline Pt electrodes. The paper describes an effective, multi-step procedure for cleaning of electrochemical and annealing glassware. The procedure comprises a four-step process for cleaning glassware and a three-step process for cleaning Viton and Teflon parts to minimize any contamination that can originate from these setup components. The contribution also outlines general laboratory practices that need to be followed in order to maintain clean conditions for conducting electrochemical experiments. The paper discusses a thermal treatment methodology that consists of two steps, namely flame-based annealing and induction-based annealing. The application of this approach produces reproducible, clean, defect-free, and atomically-ordered Pt surfaces. The complete procedure of Pt electrode annealing, cooling in a controlled atmosphere, protecting with a droplet of water, and transferring to an electrochemical cell allows one to conserve a metallic character of the electrode surface (it does not form any oxide during the transfer) while maintaining an atomic order. In addition, the paper describes the design and operation of a multi-component electrochemical workstation, which is employed in measurements on platinum electrochemistry and electrocatalysis. The paper presents and discusses the hanging meniscus configuration that is used to maintain an electrolytic contact between a monocrystalline Pt electrode and an aqueous electrolyte solution. Finally, the contribution presents CV profiles for hemispherical Pt(111), Pt(110), and Pt(100) as well as polyoriented, monocrystalline Pt electrodes, which are characteristics of high-quality electrodes and clean experimental conditions. These results validate the instrumentation described in the series of papers and the laboratory practices developed in the course of our research.
机译：在这一贡献中，这是一个主题聚焦系列的三篇论文的最终文件，我们报告了应用用于获取半球形PT（111），Pt（110）的循环伏安法（CV）型材的实验方法的发展，和Pt（100）以及聚层的单晶Pt电极。本文描述了用于清洁电化学和退火玻璃器皿的有效的多步骤。该过程包括用于清洁玻璃器皿的四步过程和用于清洁Viton和Teflon部件的三步过程，以最小化可以源自这些设置部件的任何污染。贡献还概述了需要遵循的一般实验室实践，以便维持进行电化学实验的清洁条件。本文讨论了热处理方法，包括两个步骤，即基于火焰的退火和基于感应的退火。该方法的应用产生可重复，清洁，无缺陷的和原子排序的PT表面。 Pt电极退火的完整方法，在受控气氛中冷却，用液滴保护，并转移到电化学电池允许一个保护电极表面的金属特性（它在转移期间不形成任何氧化物）保持原子序。此外，本文介绍了多组分电化学工作站的设计和操作，其在铂电化学和电常见的测量中使用。本文介绍并讨论了用于在单晶Pt电极和水性电解质溶液之间保持电解接触的悬挂弯月面构造。最后，该贡献为半球Pt（111），Pt（110）和Pt（100）以及聚层的单晶Pt电极提供CV曲线，其是高质量电极的特性和清洁的实验条件。这些结果验证了一系列论文中描述的仪器和在我们的研究过程中开发的实验室实践。

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