Data acquisition method and device based on combination of XAFS and ATR-SEIRAS

Abstract

The invention provides a data acquisition method and device based on combination of an XAFS and ATR-SEIRAS. The device comprises an in-situ pool, an infrared test system and an XAFS test system, the infrared test system is used for acquiring ATR-SEIRAS data of a sample to be tested, and the infrared test system comprises an infrared light source and an infrared light detector; the XAFS testing system is used for acquiring XAFS data of a sample to be tested, the XAFS testing system comprises an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, and the front ionization chamber is used for measuring the intensity of incident X rays. According to the data acquisition method and device based on combination of the XAFS and the ATR-SEIRAS, ATR-SEIRAS data of the to-be-tested sample is obtained based on the infrared test system, XAFS data of the to-be-tested sample is obtained based on the XAFS test system, dynamic association between the surface interface active structure evolution law of the to-be-tested sample and the physical and chemical behaviors of a reaction intermediate under the reaction condition can be achieved, and the data acquisition accuracy is improved. Therefore, the structure-activity mechanism of the reduction process of the electro-catalysis # imgabs0 # is accurately disclosed.

Description

Technical Field

[0001] The present invention relates to the field of X-ray absorption spectrum data acquisition, and in particular to a data acquisition method and device based on the combination of XAFS and ATR-SEIRAS. Background Art

[0002] because Its inherent chemical inertness makes it extremely challenging to efficiently convert it into high-value chemicals. The mechanism of electro-reduction reaction is complex, especially in terms of the stability of catalytic materials throughout their life cycle, reduction path regulation, product selectivity, energy efficiency, etc., which exist a series of scientific challenges, seriously restricting the large-scale application of conversion technology.

[0003] Electrocatalytic reactions involve gas-liquid-solid three-phase interfaces, and are accompanied by a complex process of multi-step proton-electron coupling. Identifying the active structure of electrocatalysts and the adsorption and desorption behavior of related reaction species is a key factor in determining catalytic performance. However, under the influence of factors such as electric fields, solvents, and ionic species, the active structure of catalytic materials will undergo dynamic changes, leading to problems such as changes in product selectivity and difficulty in identifying catalytic pathways. Clarifying its evolutionary laws and the dynamic dependence of the reaction species under reaction conditions is a "bridge" that connects the process from the initial state to the active intermediate state and then to the final state with the catalytic performance. The essence of regulating the initial state structure is to regulate the evolution of its surface reconstruction, thereby affecting the dynamic active structure and the mechanism of action of the reaction species. Such complexity makes it difficult to directly customize the stable active structure and the key species cannot be tracked synchronously.

[0004] Synchrotron radiation sources have the advantages of high brightness and wide spectrum. It provides an advanced technology platform for key scientific issues in the field of electro-reduction. Synchrotron radiation-based X-ray absorption spectroscopy is often used to characterize the active structure of catalysts, which can be used to identify the electronic structure and coordination environment of the active sites of catalysts. In the past few decades, the development and use of advanced experimental methods and in situ characterization techniques have greatly deepened the understanding of catalytic structures and reaction processes, and provided important support for establishing structure-activity correlations. It is worth noting that the dynamic evolution of catalysts is very rapid, and the main difficulty lies in how to accurately identify the reconstructed evolution laws of catalysts and simultaneously track the physical and chemical behaviors of key species on the surface and interface. At present, some advanced characterization techniques, such as electron microscopy, X-ray absorption spectroscopy, Raman spectroscopy and infrared spectroscopy have been widely used to identify The structural changes of the catalyst before and after the electro-reduction reaction and the monitoring of intermediates. However, domestic research is still focused on the innovation of the initial structure of the catalyst and the improvement of the electrode preparation process. The in-situ characterization technology that has been developed has problems such as single technology and limited application scenarios. Under reaction conditions, it is difficult for a single characterization technique to simultaneously reveal the surface interface structure and reaction species. Therefore, the development of combined in-situ characterization techniques is of great significance for a comprehensive and in-depth understanding of the mechanism of electrocatalytic CO2 reduction reaction. Summary of the invention

[0005] The present invention provides a data acquisition method and device based on the combination of XAFS and ATR-SEIRAS to solve the problem of electrochemical The complexity of the reduction reaction kinetics and the lack of in situ characterization methods limit the study of Technical issues in in-depth understanding and systematic research of the true structure-activity mechanism of electro-reduction.

[0006] The present invention provides a data acquisition device based on the combination of X-ray absorption fine structure spectroscopy (XAFS) and attenuated total reflection-surface enhanced infrared spectroscopy (ATR-SEIRAS), comprising: In-situ cell, infrared test system, XAFS test system; The infrared testing system is used to obtain ATR-SEIRAS data of the sample to be tested, and the infrared testing system includes an infrared light source and an infrared light detector; The XAFS test system is used to obtain XAFS data of a sample to be tested, and the XAFS test system includes an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, wherein the front ionization chamber is used to measure the intensity of incident X-rays; The in-situ cell is used to place a sample to be tested. The in-situ cell is placed between the front ionization chamber and the X-ray fluorescence detector based on a preset angle, and the in-situ cell is also placed between the infrared light source and the infrared light detector.

[0007] In some embodiments, the apparatus further comprises: Electrochemical testing equipment; The electrochemical testing equipment is used to control Experimental parameters for electroreduction reaction experiments; The electrochemical testing equipment is connected to the in-situ cell, the infrared testing system and the XAFS testing system respectively.

[0008] In some embodiments, the electrochemical testing device is further used to obtain electrochemical data of the sample to be tested.

[0009] In some embodiments, the XAFS test system further includes an external trigger and control module; The external trigger and control module is used to control the automatic cycle of the gas-liquid environment.

[0010] In some embodiments, the device further comprises a computing industrial computer component; The industrial computer component is respectively connected to the electrochemical testing equipment, the infrared testing system and the XAFS testing system; The computing industrial computer component is used to generate the catalytic reaction result of the sample to be tested based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0011] In some embodiments, the sample to be tested is coated on the surface of the attenuated total reflection ATR crystal in the in-situ cell.

[0012] In some embodiments, the preset angle is 45 degrees.

[0013] The present invention also provides a data acquisition method based on the combination of XAFS and ATR-SEIRAS, comprising: The sample to be tested is coated on the surface of the ATR crystal in the in-situ cell; Acquire ATR-SEIRAS data of the sample to be tested based on the infrared testing system, and acquire XAFS data of the sample to be tested based on the XAFS testing system; Acquiring electrochemical data of the sample to be tested based on an electrochemical testing device; A catalytic reaction result of the sample to be tested is generated based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0014] In some embodiments, the infrared testing system includes an infrared light source and an infrared light detector, and the in-situ cell is placed between the infrared light source and the infrared light detector based on a preset angle.

[0015] In some embodiments, the XAFS testing system includes an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, wherein the front ionization chamber is used to measure the intensity of incident X-rays, and the in-situ cell is placed between the front ionization chamber and the X-ray fluorescence detector based on a preset angle.

[0016] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the data acquisition method based on the combination of XAFS and ATR-SEIRAS as described above is implemented.

[0017] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described data acquisition methods based on the combination of XAFS and ATR-SEIRAS.

[0018] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the data acquisition method based on the combination of XAFS and ATR-SEIRAS as described above is implemented.

[0019] The data acquisition method and device based on the combination of XAFS and ATR-SEIRAS provided by the present invention obtains ATR-SEIRAS data of the sample to be tested based on the infrared test system, and obtains XAFS data of the sample to be tested based on the XAFS test system, which can realize the dynamic correlation between the evolution law of the surface and interface active structure of the sample to be tested and the physicochemical behavior of the reaction intermediates under the reaction conditions, thereby accurately revealing the electrocatalytic Structure-activity mechanism of the reduction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a data acquisition device based on the combination of XAFS and ATR-SEIRAS provided by the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the in-situ pool provided by the present invention.

[0023] Figure 3 The XAFS spectrum and infrared spectrum of the sample to be tested provided by the present invention are obtained by collecting the spectrum along with the potential change.

[0024] Figure 4 It is a schematic diagram of the flow of the data acquisition method based on the combination of XAFS and ATR-SEIRAS provided by the present invention.

[0025] Figure 5 It is a schematic diagram of the physical structure of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Figure 1Schematic diagram of the structure of the data acquisition device based on the combination of XAFS and ATR-SEIRAS provided by the present invention, such as Figure 1 As shown, the method includes the following: In-situ cell 101, infrared test system 102, XAFS test system 103; The infrared testing system 102 is used to obtain ATR-SEIRAS data of the sample to be tested, and the infrared testing system 102 includes an infrared light source and an infrared light detector; The XAFS test system 103 is used to obtain XAFS data of the sample to be tested. The XAFS test system 103 includes an X-ray light source, a front ionization chamber and an X-ray fluorescence detector. The front ionization chamber is used to measure the intensity of the incident X-rays. The in-situ cell 101 is used to place the sample to be tested. The in-situ cell 101 is placed between the front ionization chamber and the X-ray fluorescence detector based on a preset angle, and the in-situ cell 101 is also placed between the infrared light source and the infrared light detector.

[0028] Specifically, in order to Under the reduction reaction conditions, while the voltage changes, the structural change information of the catalyst, i.e., the sample to be tested, the surface interface X-ray absorption fine structure spectrum (XAFS) and the infrared spectrum vibration signal are accurately captured, the attenuated total reflection-surface enhanced infrared spectroscopy (ATR-SEIRAS) data of the sample to be tested is obtained based on the infrared testing system 102, and the XAFS data of the sample to be tested is obtained based on the XAFS testing system 103.

[0029] The XAFS acquisition system is mainly controlled by the XAFS data acquisition program, including monochromator control and X-ray detector data acquisition. The current signal from the ionization chamber and X-ray fluorescence detector is converted into a voltage analog signal by the current amplifier, and further converted into a digital signal by the voltage / frequency converter and 974 scaler, and then input into the computer.

[0030] The X-ray fluorescence detector is used to collect the X-ray fluorescence intensity generated when the monochromatic light penetrates the liquid film to irradiate the sample area to be tested, and generate a current signal, and further transmit the fluorescence current signal to the spectrum detection component. The infrared detector is used for the infrared light path to emit infrared light from the infrared interferometer, and the infrared light signal generated when the infrared light passes through the attenuated total reflectance (ATR) crystal through the optical path reflection accessory to reach the sample area to be tested.

[0031] In some embodiments, the sample to be tested is coated on the surface of the attenuated total reflection ATR crystal in the in-situ cell.

[0032] Specifically, Figure 2Schematic diagram of the structure of the in-situ pool provided by the present invention, such as Figure 2 As shown, the in-situ cell 101 is used to place the sample to be tested. In order to obtain a good infrared spectrum signal, the working electrode needs to be equipped with an ATR crystal, which is loaded on the back side of the in-situ cell 101. The sample to be tested is evenly coated on the surface of the ATR crystal to achieve surface enhancement of the infrared signal and loaded into a specially designed electrochemical in-situ cell.

[0033] Furthermore, the in-situ cell 101 is equipped with a counter electrode, a reference electrode and a gas-liquid circulation channel, and the thickness of the liquid film on the catalyst surface is controlled by a knob to facilitate X-ray penetration.

[0034] In some embodiments, the preset angle is 45 degrees.

[0035] Specifically, if Figure 1 As shown, the in-situ pool 101 can be placed in the optical path of the infrared light source and the X-ray light source at an angle of 45 degrees as a whole.

[0036] In some embodiments, the apparatus further comprises: Electrochemical testing equipment 104; The electrochemical testing device 104 is used to control Experimental parameters for electroreduction reaction experiments; The electrochemical testing device 104 is connected to the in-situ cell 101 , the infrared testing system 102 and the XAFS testing system 103 respectively.

[0037] Specifically, the in-situ cell 101 is connected to the control device electrochemical test device, and the The experimental parameters of the electro-reduction reaction (voltage scanning rate, potential range, etc.), gas and liquid types, flow rate, and then set the XAFS acquisition mode, acquisition speed, acquisition energy range, etc.

[0038] In some embodiments, the electrochemical testing device is further used to obtain electrochemical data of the sample to be tested.

[0039] Specifically, after the experimental parameters and acquisition parameters of each part are set, the electrochemical testing equipment is controlled by a computer to start acquiring electrochemical data of the sample to be tested, such as an electrochemical curve.

[0040] In some embodiments, the XAFS test system 103 further includes an external trigger and control module; The external trigger and control module is used to control the automatic cycle of the gas-liquid environment.

[0041] Specifically, the XAFS acquisition system also includes an external trigger and control module, which can control external additional equipment, provide guarantees for in-situ environmental control, instant triggering and interactive control of gas-liquid circulation, and precise clock control of the system.

[0042] In some embodiments, the apparatus further includes a computing industrial computer component 105; The industrial computer component 105 is connected to the electrochemical testing equipment 104, the infrared testing system 102 and the XAFS testing system 103 respectively; The industrial computer component 105 is used to generate the catalytic result of the sample to be tested based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0043] Specifically, in an electrocatalytic in-situ characterization process, the sample to be tested is first coated on the surface of the ATR crystal, and then the ATR crystal is loaded on the back side of the in-situ cell. The in-situ cell equipped with the ATR crystal side is connected to the infrared light path reflection accessory, and then fixed at the appropriate position of the X-ray detector and the infrared detector. The X-ray fluorescence detector can detect the fluorescence signal from the sample while ensuring that the infrared detector can receive the infrared light signal reflected back from the ATR crystal. Then the in-situ cell is connected to the control device electrochemical test equipment to set The electro-reduction reaction experimental parameters (voltage scanning rate, potential range, etc.), gas and liquid types, flow rate, and then set the XAFS acquisition mode, acquisition speed, acquisition energy range, etc., until the experimental parameters and acquisition parameters of each part are set.

[0044] The potential scan rate can be set to 10 millivolts per second, the potential range is 0~-1.4V, and the gas can be ,CO, , etc., the liquid can be electrolyte potassium bicarbonate, the flow rate is 0-30sccm, the XAFS acquisition mode is fluorescence acquisition, the acquisition speed is 12 minutes per spectrum, and the energy range is 200eV before the absorption edge to 600eV after the absorption edge.

[0045] The computer controls the electrochemical test equipment to start scanning the electrochemical curve, XAFS acquisition, and infrared spectrum acquisition. The related electronic external expansion and trigger modules immediately trigger the automatic circulation of the gas-liquid environment to meet the in-situ experimental conditions, ensure strict data acquisition and condition control, and have a unified time axis. The related spectral signals and in-situ condition control signals are fed back to the computer components for storage in real time. The integrated system using synchrotron radiation XAFS and ATR-SEIRAS technology can realize the simultaneous acquisition of XAFS spectra and infrared spectra of catalysts under in-situ working conditions. Figure 3The XAFS spectrum and infrared spectrum of the sample to be tested provided by the present invention are obtained by collecting the potential change. Figure 3 The specific acquisition method is to collect XAFS signals and ATR-SEIRAS signals simultaneously as the potential gradually changes from OCV to -1.4V.

[0046] It is worth mentioning that the ATR-SEIRAS data and XAFS data collected by the present invention have at least partially overlapping time axes.

[0047] The data acquisition device based on the combination of XAFS and ATR-SEIRAS provided by the present invention obtains ATR-SEIRAS data of the sample to be tested based on the infrared test system, and obtains XAFS data of the sample to be tested based on the XAFS test system, which can realize the dynamic correlation between the evolution law of the surface and interface active structure of the sample to be tested and the physicochemical behavior of the reaction intermediates under the reaction conditions, thereby accurately revealing the electrocatalytic Structure-activity mechanism of the reduction process.

[0048] Figure 4 : is a flow chart of the data acquisition method based on the combination of XAFS and ATR-SEIRAS provided by the present invention, such as Figure 4 As shown, including: Step 401, coating the sample to be tested on the surface of the ATR crystal in the in-situ cell; Step 402, acquiring ATR-SEIRAS data of the sample to be tested based on an infrared testing system, and acquiring XAFS data of the sample to be tested based on an XAFS testing system; Step 403, obtaining electrochemical data of the sample to be tested based on an electrochemical testing device; Step 404: Generate a catalytic reaction result of the sample to be tested based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0049] In some embodiments, the infrared testing system includes an infrared light source and an infrared light detector, and the in-situ cell is placed between the infrared light source and the infrared light detector based on a preset angle.

[0050] In some embodiments, the XAFS testing system includes an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, wherein the front ionization chamber is used to measure the intensity of incident X-rays, and the in-situ cell is placed between the front ionization chamber and the X-ray fluorescence detector based on a preset angle.

[0051] Specifically, the data acquisition method based on the combination of XAFS and ATR-SEIRAS provided in the embodiment of the present application can implement all the steps implemented in the data acquisition device embodiment based on the combination of XAFS and ATR-SEIRAS, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0052] Figure 5 is a schematic diagram of the physical structure of the electronic device provided by the present invention, such as Figure 5 As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communications interface 520 and the memory 530 communicate with each other via the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute a data acquisition method based on the combination of XAFS and ATR-SEIRAS, the method comprising: The sample to be tested is coated on the surface of the ATR crystal in the in-situ cell; Acquire ATR-SEIRAS data of the sample to be tested based on the infrared testing system, and acquire XAFS data of the sample to be tested based on the XAFS testing system; Acquiring electrochemical data of the sample to be tested based on an electrochemical testing device; A catalytic reaction result of the sample to be tested is generated based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0053] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0054] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the data acquisition method based on the combination of XAFS and ATR-SEIRAS provided by the above methods, the method comprising: The sample to be tested is coated on the surface of the ATR crystal in the in-situ cell; Acquire ATR-SEIRAS data of the sample to be tested based on the infrared testing system, and acquire XAFS data of the sample to be tested based on the XAFS testing system; Acquiring electrochemical data of the sample to be tested based on an electrochemical testing device; A catalytic reaction result of the sample to be tested is generated based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0055] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to perform the data acquisition method based on the combination of XAFS and ATR-SEIRAS provided by the above methods, the method comprising: The sample to be tested is coated on the surface of the ATR crystal in the in-situ cell; Acquire ATR-SEIRAS data of the sample to be tested based on the infrared testing system, and acquire XAFS data of the sample to be tested based on the XAFS testing system; Acquiring electrochemical data of the sample to be tested based on an electrochemical testing device; A catalytic reaction result of the sample to be tested is generated based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

[0056] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0057] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A data acquisition device based on the combination of X-ray absorption fine structure spectroscopy (XAFS) and attenuated total reflection-surface enhanced infrared spectroscopy (ATR-SEIRAS), characterized in that: include: In-situ cell, infrared test system, XAFS test system; The infrared testing system is used to obtain ATR-SEIRAS data of the sample to be tested, and the infrared testing system includes an infrared light source and an infrared light detector; The XAFS test system is used to obtain XAFS data of a sample to be tested, and the XAFS test system includes an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, wherein the front ionization chamber is used to measure the intensity of incident X-rays; The in-situ cell is used to place a sample to be tested. The in-situ cell is placed between the front ionization chamber and the X-ray fluorescence detector based on a preset angle, and the in-situ cell is also placed between the infrared light source and the infrared light detector.

2. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 1, characterized in that: The device also includes: Electrochemical testing equipment; The electrochemical testing equipment is used to control Experimental parameters for electroreduction reaction experiments; The electrochemical testing equipment is connected to the in-situ cell, the infrared testing system and the XAFS testing system respectively.

3. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 2, characterized in that: The electrochemical testing device is also used to obtain electrochemical data of the sample to be tested.

4. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 1, characterized in that: The XAFS test system also includes an external trigger and control module; The external trigger and control module is used to control the automatic cycle of the gas-liquid environment.

5. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 1, characterized in that: The device also includes a computing industrial computer component; The industrial computer component is connected to the electrochemical testing equipment, the infrared testing system and the XAFS testing system respectively; The industrial computer component is used to generate the catalytic result of the sample to be tested based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

6. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 1, characterized in that: The sample to be tested is coated on the surface of the attenuated total reflection ATR crystal in the in-situ cell.

7. The data acquisition device based on the combination of XAFS and ATR-SEIRAS according to claim 1, characterized in that: The preset angle is 45 degrees.

8. A data acquisition method based on the combination of XAFS and ATR-SEIRAS, characterized in that: include: The sample to be tested is coated on the surface of the ATR crystal in the in-situ cell; Acquire ATR-SEIRAS data of the sample to be tested based on the infrared testing system, and acquire XAFS data of the sample to be tested based on the XAFS testing system; Acquiring electrochemical data of the sample to be tested based on an electrochemical testing device; A catalytic reaction result of the sample to be tested is generated based on the ATR-SEIRAS data, the XAFS data and the electrochemical data.

9. The data acquisition method based on the combination of XAFS and ATR-SEIRAS according to claim 8, characterized in that: The infrared testing system comprises an infrared light source and an infrared light detector, and the in-situ cell is placed between the infrared light source and the infrared light detector based on a preset angle.

10. The data acquisition method based on the combination of XAFS and ATR-SEIRAS according to claim 8, characterized in that: The XAFS testing system includes an X-ray source, a front ionization chamber and an X-ray fluorescence detector. The front ionization chamber is used to measure the intensity of incident X-rays. The in-situ cell is placed between the X-ray source and the X-ray fluorescence detector based on a preset angle.

Images