高温红外光谱电化学薄层池的制作与表征

doi:10.11944/j.issn.1000-0518.2019.01.180041

摘要/Abstract

摘要：

为了拓宽光谱电化学研究范围,开展高温下电化学反应过程,本文研制了一种高温红外光谱电化学薄层池(HTC)。研制的HTC清洗方便,操作简单,适用于水体系和有机体系。该HTC可在室温至373 K(根据溶剂沸点,控温精度为±0.5 K)温度范围内使用,具有良好的电化学性能,红外光谱采集谱图清晰信噪比好。利用铁氰化钾水溶液和对苯醌离子液体溶液的红外光谱电化学行为对HTC进行了表征,得到较满意的结果。

关键词: 高温红外电化学池, 离子液体, 对苯醌, 铁氰化钾, 红外光谱电化学

Abstract:

In order to investigate electrochemical process at elevated temperature, a high temperature thin-layer cell(HTC) was constructed for in situ infrared(IR) spectroelectrochemistry. It works very well in the temperature range from ambient to 373 K(depend on boiling point of solvent) with the control precision within ±0.5 K to apply for room-temp and high-temp in situ IR spectroelectrochemistry. The cell can be facilely cleaned and conveniently manipulated in both aqueous and non-aqueous system. The electrochemical and IR performance were characterized with K₃[Fe(CN)₆] in aqueous and with benzoquinone(BQ) in ionic liquid BMIMPF₆ by cyclic voltammetry and in situ IR spectroelectrochemistry at various temperature. Experimental results suggest that the cell has an excellent electrochemical performance within wider range of temperature, and good signal-noise ratio for IR absorption peaks during cyclic voltammetry(CV) scan. In conclusion, HTC has a promising application in electrochemical process in which the temperature plays an important role.

Key words: high temperature thin-layer cell, ionic liquid, benzoquinone, potassium ferricyanide, infrared spectroelectrochemistry

朱云, 洪亮, 金葆康. 高温红外光谱电化学薄层池的制作与表征[J]. 应用化学, 2019, 36(1): 107-113.

ZHU Yun, HONG Liang, JIN Baokang. Construction and Characterization of a High Temperature Infrared Spectroelectrochemical Thin-Layer Cell[J]. Chinese Journal of Applied Chemistry, 2019, 36(1): 107-113.

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