In-situ photoelectrocatalysis test cell combined with electrochemical mass spectrometry
By designing an in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry, the problem of insufficient applicability of sample morphology in existing test cells was solved, high-sensitivity real-time monitoring of photoelectrocatalytic reaction products was achieved, and test efficiency was improved.
Patent Information
- Application Number
- CN202422604817.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-28
AI Technical Summary
Existing photoelectrocatalytic test cells have limitations in terms of sample morphology applicability and cannot achieve in-situ real-time monitoring of product changes during photoelectrocatalytic reactions.
An in situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry was designed, which includes an upper cell body, a bottom plate, a reference electrode assembly, a sampling probe and a working electrode assembly. The FTO conductive glass working electrode is introduced through a conductive copper glue, combined with a buffer structure layer and an H-shaped chamber assembly to achieve simple operation and high-sensitivity product monitoring.
It achieves high-sensitivity monitoring of volatile products within milliseconds, simplifies test operations, improves test efficiency, and provides a new solution for sample morphology selection.
Smart Images
Figure CN223449867U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrochemistry instrument field, concretely relates to a kind of in situ photoelectrocatalysis test cell for electrochemical mass spectrometry. BACKGROUND
[0002] In order to better study the performance and reaction mechanism of the sample in the photoelectrocatalysis reaction system, various tests need to be performed on the sample. The traditional photoelectrocatalysis reaction test method can only provide limited information. For photoelectrocatalysis reaction products, the reaction is generally first, then the product is collected for result analysis, and the change of the sample in the photoelectrocatalysis reaction process cannot be understood in situ and in real time. Electrochemical mass spectrometry is a test method that can monitor volatile products within milliseconds during potential dynamic scanning. It can monitor the chemical changes in the sample reaction process in real time.
[0003] Therefore, it is of great practical significance to apply electrochemical mass spectrometry to the photoelectrocatalysis reaction system and develop an in situ photoelectrocatalysis test cell for electrochemical mass spectrometry. However, the existing photoelectrocatalysis test cell has certain limitations in terms of applicable sample form. UTILITY MODEL CONTENT
[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide an in situ photoelectrocatalysis test cell for electrochemical mass spectrometry. Through structural modification, simple operation of the in situ photoelectrocatalysis test cell for electrochemical mass spectrometry is realized, and a new scheme is provided for the selection of sample form for the existing in situ photoelectrocatalysis test cell.
[0005] In order to achieve the purpose of the utility model, the technical scheme adopted is:
[0006] An in situ photoelectrocatalysis test cell for electrochemical mass spectrometry, comprising:
[0007] an upper cell body and a bottom plate fixed integrally with the upper cell body;
[0008] a reference electrode assembly, a sampling probe and an auxiliary electrode assembly are provided in the upper cell body;
[0009] a sample groove for placing a working electrode assembly is provided on the bottom plate facing the upper cell body;
[0010] the working electrode assembly is a working electrode provided with an upper buffer structure layer and a lower buffer structure layer;
[0011] the sampling probe in the upper cell body is close to the surface of the working electrode in the sample groove of the bottom plate, so as to monitor the product in the photoelectrocatalysis reaction process, and the working electrode is FTO conductive glass;
[0012] The reference electrode assembly and the auxiliary reference assembly are arranged on both sides of the sampling probe.
[0013] In one preferred embodiment of the present application, the upper buffer structure layer is a first gasket arranged at the upper surface of the working electrode.
[0014] In one preferred embodiment of the present application, the lower buffer structure layer is a second gasket arranged at the lower surface of the working electrode.
[0015] In one preferred embodiment of the present application, the first gasket or the second gasket is a silica gel gasket provided with a through hole.
[0016] In one preferred embodiment of the present application, the working electrode is FTO conductive glass led out by conductive copper glue, and the FTO conductive glass is arranged in the sample groove of the bottom plate.
[0017] In one preferred embodiment of the present application, the reference electrode assembly comprises a reference electrode mounted in a reference electrode mounting hole in the upper cell body through a rubber plug.
[0018] In one preferred embodiment of the present application, the auxiliary electrode assembly comprises an auxiliary electrode arranged in the H-shaped chamber assembly.
[0019] In one preferred embodiment of the present application, the H-shaped chamber assembly comprises an exchange membrane fixed in the H-shaped chamber through a matched screw cap and the H-shaped chamber, and a metal rod fixed on the screw cap, so that the H-shaped chamber assembly is convenient to take.
[0020] In one preferred embodiment of the present application, the bottom plate is connected with the upper cell body through a plurality of fasteners.
[0021] The present application has the following beneficial effects:
[0022] Through the structural modification, the in-situ photoelectrocatalytic test cell combined with electrochemical mass spectrometry is realized, simple operation is realized, and a new scheme is provided for the selection of the existing in-situ photoelectrocatalytic test cell in the sample form. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The present application is an installation schematic view.
[0024] Figure 2 The present application is a structural schematic view. DETAILED DESCRIPTION
[0025] For the purpose, technical scheme and advantages of the utility model to be clearer and more obvious, the following through the drawings and examples, the utility model is further described in detail. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.
[0026] In the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] As Figure 1 Or 2 shows a kind of in-situ photoelectrocatalytic test cell used with electrochemical mass spectrometry, including upper cell body 100 and the bottom plate 200 fixed with upper cell body 100 integrally.
[0028] The bottom plate 200 is connected with the upper cell body 100 by a plurality of fasteners 900.
[0029] Reference electrode assembly 500, sampling probe 400 and auxiliary electrode assembly 300 are provided in the upper cell body 100, and sample groove 201 for placing working electrode assembly 700 is provided on the bottom plate 200 towards the direction of the upper cell body 100.
[0030] The working electrode assembly 700 is provided with the working electrode 720 with the upper buffer structure layer 600 and the lower buffer structure layer 800, and the sampling probe 400 in the upper cell body 100 is close to the surface of the working electrode 720 in the sample groove 201 of the bottom plate, so as to monitor the product in the photoelectrocatalytic reaction process.
[0031] The working electrode 720 is FTO conductive glass, specifically FTO conductive glass led out by conductive copper glue 710, and the FTO conductive glass is arranged in the sample groove 201 of the bottom plate.
[0032] The upper buffer structure layer 600 is a first gasket arranged at the upper surface of the working electrode 720, and the lower buffer structure layer 800 is a second gasket arranged at the lower surface of the working electrode 720. The first gasket or the second gasket is a silica gel gasket provided with a through hole. Specifically, the first gasket 600 is arranged above the working electrode FTO conductive glass 720, and is used for buffering the extrusion between the working electrode FTO conductive glass 720 and the upper cell body 100. The second gasket 800 is arranged below the working electrode FTO conductive glass 720, and is used for buffering the extrusion between the working electrode FTO conductive glass 720 and the sample groove 201.
[0033] The reference electrode assembly 500 and the auxiliary reference electrode assembly 300 are arranged on both sides of the sampling probe 400. The reference electrode assembly 500 comprises a reference electrode 510 which is arranged in a reference electrode mounting hole (not shown in the figure) in the upper cell body 100 through a rubber plug 520.
[0034] The auxiliary electrode assembly 300 comprises an auxiliary electrode 310 arranged in an H-shaped chamber assembly 320. The H-shaped chamber assembly 320 further comprises an H-shaped chamber 324 and a metal rod 321. The exchange membrane 323 is fixed in the H-shaped chamber 324 through the matched screw cap 322 and the H-shaped chamber 324. The metal rod 321 is fixed on the screw cap 322, and the H-shaped chamber assembly 320 is convenient to take.
[0035] Because of the above structure, the working principle of the utility model is as follows:
[0036] The upper cell body and the bottom plate are fixed through fasteners such as screws. The working electrode FTO conductive glass is arranged in the sample groove of the bottom plate.
[0037] The upper and lower sides of the working electrode assembly are provided with gaskets. The upper side is provided with a gasket for buffering the extrusion with the upper cell body, and the lower side is provided with a gasket for buffering the extrusion between the working electrode FTO conductive glass and the sample groove.
[0038] The working electrode FTO conductive glass is led out through the conductive copper tape.
[0039] The reference electrode is connected with the mounting hole of the upper cell body through the rubber plug.
[0040] The auxiliary electrode is arranged in the H-shaped chamber assembly. The H-shaped chamber assembly is convenient to take through the matched screw cap and the H-shaped chamber. The exchange membrane is fixed in the H-shaped chamber, and the metal rod is fixed on the screw cap.
[0041] The sampling probe is close to the surface of the working electrode in the sample groove of the bottom plate, so as to monitor the product in the photoelectrocatalysis reaction process.
[0042] In combination with the above structure, an in-situ photoelectrocatalysis test cell combined with an electrochemical mass spectrometer is formed, and is suitable for a photocatalysis sample with the working electrode being FTO conductive glass.
[0043] The utility model discloses high sensitivity can be volatile product in millisecond time is monitored, and test pool operation is convenient, can install and dismantle electrode fast, has improved test efficiency, has provided a new scheme for the selection of the sample form of the existing in-situ photoelectrocatalytic test pool.
[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model.
[0045] Those skilled in the art should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, various changes and improvements can be made to the utility model. These changes and improvements all fall within the scope of the claimed utility model, and the scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. An in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry, characterized in that: include: An upper tank body and a bottom plate fixed integrally with the upper tank body; The upper cell body is provided with a reference electrode assembly, a sampling probe and an auxiliary electrode assembly; A sample slot for placing a working electrode assembly is provided in the direction of the bottom plate toward the upper cell body; The working electrode assembly is a working electrode provided with an upper buffer structure layer and a lower buffer structure layer; The sampling probe in the upper cell body is close to the surface of the working electrode in the bottom plate sample slot to monitor the product of the photoelectrocatalytic reaction process, and the working electrode is FTO conductive glass; The reference electrode assembly and the auxiliary electrode assembly are arranged on both sides of the sampling probe.
2. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The upper buffer structure layer is a first gasket arranged on the upper surface of the working electrode.
3. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The lower buffer structure layer is a second gasket arranged on the lower surface of the working electrode.
4. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 2 or 3, characterized in that: The first gasket or the second gasket is a silicone gasket provided with a through hole.
5. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The working electrode is FTO conductive glass led out through conductive copper glue, and the FTO conductive glass is arranged in the sample groove of the bottom plate.
6. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The reference electrode assembly comprises a reference electrode which is installed in a reference electrode installation hole in the upper cell body through a rubber stopper.
7. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The auxiliary electrode assembly includes an auxiliary electrode disposed in an H-shaped chamber assembly.
8. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 7, characterized in that: The H-shaped chamber assembly includes a nut and an H-shaped chamber that are matched to fix the exchange membrane in the H-shaped chamber. A metal rod is fixed on the nut to facilitate taking the H-shaped chamber assembly.
9. The in-situ photoelectrocatalytic test cell coupled with electrochemical mass spectrometry according to claim 1, characterized in that: The bottom plate is connected to the upper pool body through a plurality of fasteners.