Electrochemical needle point enhanced Raman spectrometry instrument based on scanning probe microscope

Abstract

The invention discloses an electrochemical needle point enhanced Raman spectrometry instrument based on a scanning probe microscope. The electrochemical needle point enhanced Raman spectrometry instrument is characterized by comprising a scanning head of the scanning probe microscope, and an atmosphere controlled and matched in-situ spectrum electrolytic cell body which can be matched with a conventional commercial spectrometer laser collection module. The scanning head of the scanning probe microscope adopts a special design, a sample is driven to realize XYZ morphology scanning by adopting piezoelectric ceramics, and the scanning probe is fixed on the electrolytic cell still; the instrument structure is designed based on the lens of undersea glasses, so as to realize maximum excitation and collection efficiency of an electrochemical liquid; although the instrument is based on an inverted mode, the instrument can be used for researching transparent and opaque samples; and oxygen removal seal of the system is realized by adopting an isolation hood, the influence of the oxygen on the system research is avoided, solution volatilization is avoided, and an atmosphere inside a cavity can be controlled through an air inlet / outlet.

Description

Technical field [0001] The invention relates to an electrochemical needle tip enhanced Raman spectroscopy instrument based on a scanning probe microscope, belonging to the fields of electrochemistry, scanning probe microscopy and spectrochemistry. Background technique [0002] Electrochemistry (EC) is closely related to the development of materials, energy, environment, information science and even life sciences. Traditional electrochemical methods mainly measure electrode potential or current, and obtain the macroscopic average of the electrode interface. Information, it is difficult to provide the behavior of molecules on the surface from the level of molecular structure. Applying molecular spectroscopy techniques such as ultraviolet, infrared and Raman to electrochemical field research can directly obtain information on the mode of action, adsorption orientation and coverage of the electrode surface species at the molecular level. Among them, Raman spectroscopy technology, es...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing tip-enhanced Raman technology is difficult to combine with electrochemical technology, and to design an electrochemical tip-enhanced Raman spectroscopy instrument based on scanning probe microscope

The invention is simple and easy to realize, and solves the problem of optical path distortion existing in the electrochemical system with the air objective lens. The assembly and cleaning of the bit spectrum electrolytic cell is simple and easy

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