A thin-layer spectroelectrochemical detection device with a sandwich structure

Abstract

The invention discloses a thin-layer spectrum electrochemical detection device with a sandwich structure. According to the detection device, a rubber isolation pad, an upper-layer perspective window, a polymer gasket and a lower-layer perspective window are arranged between an upper-layer metal panel and a lower-layer metal panel in sequence; the polymer gasket is arranged between the upper-layer perspective window and the lower-layer perspective window to form a multilayered structure similar with a sandwich; a thin layer is internally provided with a working electrode, a reference electrode and an auxiliary electrode to form an electrochemical reaction tank of the three electrodes; a protective sleeve is arranged at the periphery of the lower-layer perspective window; a through hole is formed in the middle of the protective sleeve; the through holes can be used for just storing the lower-layer perspective window and the polymer gasket; electrode connecting inserting holes are formed in the outer side of the protective sleeve. The thin-layer spectrum electrochemical detection device with the sandwich structure has good air tightness; the thickness of the thin layer can be adjusted according to the polymer gasket so that excellent thin-layer electrochemical reaction characteristics are provided; the aim of in-situ spectrum detection of an electrochemical reaction product and an intermediate product can be realized.

Description

technical field [0001] The invention relates to the fields of in-situ electrochemical and spectral analysis, in particular to a thin-layer spectroelectrochemical detection device with a sandwich structure for in-situ analysis. Background technique [0002] Spectroelectrochemistry combines electrochemical and spectroscopic techniques, providing a new method for studying and accurately determining electrochemical reaction products and intermediate products. Through voltage control, the electrochemical reaction can be carried out smoothly in the spectroelectrochemical detection device, and the spectral information of these substances can be obtained at the same time, and then the kinetics and thermodynamic parameters of the electrochemical reaction can be obtained. important means of the mechanism. The key to spectroelectrochemical research lies in the spectroelectrochemical detection device. [0003] At present, the reported spectroelectrochemical detection devices are all b...

AI Technical Summary

Problems solved by technology

Under complex electrochemical reaction conditions, reaction products or intermediate products will be adsorbed on the surface of the working electrode, causing contamination of the electrode, and in some existing spectroelectrochemical detection device designs (see the thin-layer spectroelectrochemical spectroelectrochemical product produced by the British Specac company) detection device), the electrodes, especially the working electrodes, are fixed and cannot be replaced, so the electrodes cannot be cleaned and reused, resulting in huge waste

[0005] (2) Sample injection problem

In some existing designs, the sample needs to be injected into the liquid storage pool or the electrode pool first, and then enter the detection device from the liquid storage pool or the electrode pool. This sampling method requires a large amount of sample and is not applicable. For samples with high viscosity (eg: ionic liquid)

[0006] (3) Air tightness problem

[0007] (4) Structural problems

The spectroelectrochemical detection device must be cleaned after each measurement. Due to the complex structure of some detection devices, the disassembly and assembly process is cumbersome, especially the electrode position must be corrected during the assembly process, which limits the rapid repetition of the detection device. use

[0008] (5) Universal issues

The special design of the detection device will limit its matching with ordinary commercial spectroscopic instruments, and it needs to rely on a special sample holder for optical path calibration, which limits the universality of spectroelectrochemistry

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