Preparation method and application of artificial neuromorphic phosgene collaborative sensing equipment based on two-dimensional perovskite oxide

Abstract

The invention relates to a two-dimensional perovskite oxide-based artificial neuromorphic phosgene collaborative sensing device, and belongs to the technical field of functional nano material application. The two-dimensional perovskite oxide La2Ti2O7 (LTO) nanosheet has semiconductor and ionic conductivity, the transverse size is about 100 nm, and the two-dimensional perovskite oxide La2Ti2O7 (LTO) nanosheet can respond to NO2 gas and photostimulation at the same time. A double-end device prepared on the basis of the LTO nanosheet shows input-dependent excitability and inhibitory switchable synaptic current. The double-end artificial neuromorphic phosgene collaborative sensing device can be used for evaluating and early warning a potential acid rain scene. Compared with a traditional acid rain early warning system needing a plurality of sensors and a logic processor, the equipment greatly reduces the system complexity, enhances the system reliability, and proves the importance of using a multifunctional sensing material to the artificial synaptic response environmental chemical process.

Description

Technical Field

[0001] The present invention relates to an artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide, belonging to the technical field of nanomaterials. Background Art

[0002] Neuromorphic electronic devices, fabricated by mimicking biological synapses, can integrate sensing, memory, and signal processing modules, offering advantages such as low power consumption and sub-millisecond response latency. Early artificial synapses were primarily sensitive to electrical current and light pulse stimulation. For example, CeO2 / MoS2, α-In2Se3, and MoSe2 have been used in optoelectronic synaptic devices to mimic human vision. Recently, scientists have also developed artificial synapses that can respond to other types of stimuli, including force, magnetic fields, and gas molecules. For example, WO3@WO3, InGdO nanofibers, and PEDOT:PSS hydrogels have been widely used in gas synaptic sensing to build artificial olfactory systems.

[0003] Most previous neuromorphic devices were built to respond to a single type of input signal. Recently, researchers are actively investigating functional materials that can respond to multiple stimuli simultaneously. For example, ZnS:Cu / CaSrS:EU particles have been used to create a mechano-optical artificial synapse that can be used to process electronic handwriting. A dual nonvolatile memory with electronic and optoelectronic synaptic functions, which can be used to accurately recognize complex images, is also made from ReS2. However, the operating principles of most of these devices are still based on single-shot, physically induced changes in the electrical properties of the sensing material. The environmental chemical processes that may occur in the presence of physical stimuli have been largely overlooked.

[0004] Furthermore, acid rain poses a serious threat to human safety and urban infrastructure, necessitating the development of a practical acid rain early warning system. Excessive anthropogenic nitrogen oxide / sulfur oxide (NOx / SOx) emissions and atmospheric photochemical reactions driven by solar ultraviolet (UV) radiation are the primary causes of acid rain events. Traditional warning systems rely on separate sensors to detect UV light and NO2, but fail to assess the impact of the synergistic UV-NO2 interaction on acid rain formation and provide early warning of potential acid rain events. Summary of the Invention

[0005] To address these challenges, a two-terminal artificial neuromorphic phosgene-cooperative sensing device based on two-dimensional perovskite oxide La2Ti2O7 (LTO) nanosheets was developed. It demonstrates multi-factor-dependent, tunable synaptic plasticity, eliminating the need for multiple sensors and complex logic processors. The synergistic effects of UV light and gas adsorption (NO2) on LTO photocurrent regulation and synaptic plasticity were systematically exploited. An intelligent acid rain warning system was designed, highlighting the device's practicality in complex environmental conditions. The two-dimensional perovskite oxide La2Ti2O7 (LTO) nanosheets exhibit both semiconductor and ionic conductivity, a lateral size of approximately 100 nm, and can respond simultaneously to NO2 gas and light stimulation. A two-terminal device fabricated based on these LTO nanosheets exhibits input-dependent, switchable excitatory and inhibitory synaptic currents. This two-terminal artificial neuromorphic phosgene-cooperative sensing device can be used to assess and warn of potential acid rain scenarios. Compared to traditional acid rain warning systems that require multiple sensors and logic processors, this device significantly reduces system complexity and enhances reliability, demonstrating the importance of using multifunctional sensing materials for artificial synapses to respond to environmental chemical processes.

[0006] To solve the above technical problems, the present invention proposes a technical solution: an artificial neuromorphic phosgene collaborative sensing device based on two-dimensional perovskite oxide, which can be used for acid rain early warning in coastal chemical industrial areas. The technical solution includes the following steps:

[0007] (1) Titanium sulfate and lanthanum nitrate were dispersed in deionized water, stirred, and NaOH solution was slowly added. After stirring, untreated lanthanum titanate nanosheets were prepared by hydrothermal method.

[0008] (2) The lanthanum titanate nanosheets prepared in step (1) are dispersed in ethanol and polypyrrolidone is added, stirred and ultrasonicated, and washed to obtain lanthanum titanate nanosheets.

[0009] (3) The lanthanum titanate nanosheets prepared in step (2) are dispersed in ethanol and spin-coated onto interdigital electrodes, and the interdigital electrodes are connected to a back-end processing circuit to obtain an artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide.

[0010] The mass of titanium sulfate added in step (1) is 0.096 g, the mass of lanthanum nitrate is 0.1732 g, and the NaOH (0.125 g / mL) aqueous solution is 2 mL; the stirring rate is 1400 rpm, and the stirring time is 2 h; the heating temperature of the hydrothermal method is 200 ° C, and the heating time is 10 h.

[0011] In step (2), the concentration of the lanthanum titanate nanoethanol solution is 50 mg / mL, the volume is 10 mL, the mass of polypyrrolidone is 10 mg, and the ultrasonic time is 4 h.

[0012] In step (3), the concentration of the lanthanum titanate nano-ethanol solution was 50 mg / mL and the volume was 10 mL. The spin coating speed was 2000 rpm.

[0013] Another technical solution proposed to solve one of the above technical problems is: preparing small-sized LTO nanosheets by the method described above.

[0014] Another technical solution proposed to solve one of the above technical problems is that the small-sized LTO nanosheets prepared by the method described above can be spin-coated on gold interdigital electrodes to prepare neuromorphic devices.

[0015] Another technical solution proposed to solve one of the above technical problems is that the neuromorphic device can be used to warn of acid rain caused by light-catalyzed atmospheric reactions.

[0016] Preferably, the lateral size of the LTO nanosheets used is about 100 nm, and after adding PVP, it needs to be washed with deionized water 8 times to remove excess PVP.

[0017] Preferably, the gold interdigitated electrodes used have a finger spacing of 300 μm, a length of 2 cm, a width of 1.5 cm, and a total of 20 fingers.

[0018] Preferably, the method comprises the following steps:

[0019] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V.

[0020] (2) Use a gas-sensitive diluter to control the nitrogen dioxide concentration inside the cavity where the electrodes are placed, and record the current changes displayed on the electrochemical workstation.

[0021] (3) Connect the prepared two-terminal electrode to the electrochemical workstation, set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V.

[0022] (4) Use the laser control device to control the 365 nm laser to emit pulsed laser light ten times with a duration of 0.5 s and a rest period of 0.5 s, and record the current changes of the electrode displayed in the electrochemical workstation.

[0023] (5) An artificial neuromorphic phosgene cooperative sensing device is placed in a sealed acrylic transparent box, and nitrogen dioxide gas is introduced and photoelectric pulse stimulation is performed to simulate an environment where acid rain may form.

[0024] Preferably, the prepared lanthanum titanate nanosheets can achieve an upward current response to nitrogen dioxide on a double-terminal electrode by spin coating, comprising the following steps:

[0025] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V.

[0026] (2) Use a gas-sensitive diluter to control the nitrogen dioxide concentration inside the cavity where the electrodes are placed, and record the current changes displayed on the electrochemical workstation.

[0027] Preferably, the prepared lanthanum titanate nanosheets can achieve an upward current response to pulsed ultraviolet light on a double-terminal electrode by spin coating, comprising the following steps:

[0028] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V.

[0029] (2) Use the laser control device to control the 365 nm laser to emit pulsed laser light ten times in a row with a duration of 0.5 s and a rest period of 0.5 s, and record the current changes of the electrode displayed in the electrochemical workstation.

[0030] Preferably, the prepared lanthanum titanate nanosheets are prepared into a two-terminal artificial neuromorphic photogas cooperative sensing device by spin coating, which realizes a downward photocurrent synaptic response to pulsed ultraviolet light in a nitrogen dioxide atmosphere, and the photocurrent has a hysteretic and irreversible current reduction effect.

[0031] Preferably, the device is connected to a back-end processing circuit, and the device can form a risk warning for potential acid rain.

[0032] Beneficial effects of the present invention:

[0033] Two-dimensional La₂Ti₂Oₐ nanosheets (LTO) were synthesized via a hydrothermal method and subsequently sonicated in a PVP solution. These two-dimensional perovskite oxide La₂Ti₂Oₐ (LTO) nanosheets exhibit both semiconducting and ionic conductivity, with lateral dimensions of approximately 100 nm, and can respond simultaneously to NO₂ gas and light stimulation. A two-terminal device fabricated based on these LTO nanosheets exhibits input-dependent excitatory and inhibitory switchable synaptic currents. This two-terminal artificial neuromorphic phosphine cooperative sensing device can be used to assess and warn of potential acid rain scenarios. Compared to traditional acid rain warning systems that require multiple sensors and logic processors, this device significantly reduces system complexity and enhances reliability, demonstrating the importance of using multifunctional sensing materials for artificial synaptic responses to environmental chemical processes.

[0034] The irreversible photocurrent response under pulsed light irradiation under different atmospheric conditions endows the device with tunable phosgene synaptic behavior, enabling input-dependent switching of excitatory and inhibitory postsynaptic currents. By integrating the device with a signal amplifier and a warning light, a biomimetic synaptic device for early warning of acid rain was successfully realized. This invention advances the application of multifunctional materials in environmental responses to chemical processes.

[0035] 1. The LTO nanosheets prepared by the present invention greatly reduce the size of the unit nanosheets and avoid the agglomeration phenomenon between the nanosheets.

[0036] 2. The artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide prepared by the present invention has an upward current response to nitrogen dioxide gas with a concentration as low as 5 ppm (room temperature, 57% RH, 0.5 V bias).

[0037] 3. The artificial neuromorphic photoelectrochemical cooperative sensing device based on two-dimensional perovskite oxide prepared by the present invention has an upward synaptic current response to 0.5s / 0.5s pulsed 365nm laser stimulation (room temperature, 57% RH, 0.5V bias).

[0038] 4. The artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide prepared by the present invention has a downward synaptic inhibitory current response to 0.5 s / 0.5 s pulsed 365 nm laser stimulation in a 5 ppm nitrogen dioxide atmosphere (room temperature, 57% RH, 0.5 V bias).

[0039] 5. The artificial neuromorphic phosgene synergistic sensing device based on two-dimensional perovskite oxide prepared by the present invention can monitor the phosgene synergistic effect and realize the monitoring of ultraviolet catalytic water vapor reaction on a single device (room temperature, 57% RH, 0.5 V bias).

[0040] 6. The artificial neuromorphic phosgene collaborative sensing device based on two-dimensional perovskite oxide prepared by the present invention can accurately warn of possible acid rain in a simulated environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] Figure 1 is the XRD pattern of LTO nanosheets.

[0043] Figure 2 This is the TEM image of LTO nanosheets.

[0044] Figure 3 This is the HRTEM image of LTO nanosheets.

[0045] Figure 4This is a diagram of the back-end data processing device of the artificial neuromorphic phosgene collaborative sensing device.

[0046] Figure 5 This is the gas-sensitive response curve of the artificial neuromorphic phosgene collaborative sensing device to 5 ppm nitrogen dioxide.

[0047] Figure 6 It is the photoelectric response of the artificial neuromorphic photoelectric cooperative sensing device to pulsed ultraviolet light stimulation with a duration and interval of 0.5 seconds.

[0048] Figure 7 It is the photoelectric response of the artificial neuromorphic photoelectric cooperative sensing device to pulsed ultraviolet light stimulation with a duration of 1 s and an interval of 0.5 s.

[0049] Figure 8 It is the photoelectric response of the artificial neuromorphic phosgene cooperative sensing device to two consecutive light stimuli in a 5 ppm nitrogen dioxide environment.

[0050] Figure 9 It is a schematic diagram of six simulated environments that may produce acid rain and a schematic diagram of the threshold alarm judgment of neural equipment.

[0051] Figure 10 This is the warning situation of the artificial neuromorphic phosgene collaborative sensing device in 6 simulated scenarios. DETAILED DESCRIPTION

[0052] In order to better understand the present invention, the technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0053] Example 1: Preparation method of small-sized lanthanum titanate nanosheet material

[0054] 0.4 mMOL lanthanum nitrate pentahydrate and 0.4 mMOL titanium sulfate were dissolved in 2 mL of deionized water and sonicated for 5 minutes to make the solution uniform. Then, 2 mL of 0.125 g / mL sodium hydroxide solution was gradually added to the mixture under continuous stirring. The stirring rate was 1400 rpm. After the reaction was carried out for 2 hours, the entire mixture was transferred to a 5 mL stainless steel autoclave lined with polytetrafluoroethylene and heated at 200 °C for 10 hours. After cooling naturally to room temperature, the product was separated by centrifugation, washed twice with 2 M hydrochloric acid and deionized water in sequence, and finally redispersed in 10 mL of ethanol. 10 mg of PVP was added to 10 mL of the previous product ethanol solution (50 mg / mL), and then sonicated for 4 hours. The solution was then centrifuged and washed 8 times with ethanol before being dispersed in ethanol to obtain a lanthanum titanate nano-LTO ethanol solution with a concentration of 50 mg / mL.

[0055] The small-sized lanthanum titanate nanosheet material prepared in Example (1) was characterized, as shown in FIG. Figure 1 As shown, X-ray diffraction (XRD) analysis confirmed their crystal structures (space group P21, PDF280517). Figure 2 As shown in the transmission electron microscopy (TEM) images in , the lateral size of the LTO nanosheets is about 100 nm and the thickness is about 4 nm. Figure 3 Lattice spacings of 2.0 and 2.8 Å were observed in high-resolution transmission electron microscopy (HRTEM) images, which correspond to the (020) and (004) planes of LTO.

[0056] Example 2: Preparation method of artificial neuromorphic phosphine cooperative sensing device based on two-dimensional perovskite oxide

[0057] 20 microliters of the LTO ethanol solution (50 mg / mL) obtained in Example 1 was spin-coated onto the surface of a gold interdigitated electrode (2000 rpm) and dried in a vacuum for 12 hours. The gold interdigitated electrode was 2 cm long, 1.5 cm wide, with a 300 μm interdigital spacing and a thickness of 1 mm. The substrate was made of aluminum oxide and had 20 gold interdigitated fingers. Figure 4 ) are connected to the two ends of the interdigital electrodes to prepare an artificial neuromorphic phosgene collaborative sensing device.

[0058] Example 3: Gas-sensitive response of an artificial neuromorphic photogas cooperative sensing device based on two-dimensional perovskite oxide

[0059] like Figure 5 As shown, the artificial neuromorphic phosgene-cooperative sensing device prepared in Example 2 exhibits an upward current response to 5 ppm nitrogen dioxide gas. Because LTO is a weakly p-type doped semiconductor, its resistance decreases when exposed to oxidizing gases such as NO2, resulting in a positive current response (10 nA @ 5 ppm NO2). The process includes the following steps:

[0060] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, the bias voltage to 0.5 V, and the total sampling time to 1800 s.

[0061] (2) Use a gas diluter to dilute the nitrogen dioxide concentration inside the chamber where the electrode is placed to 5 ppm, record the current changes displayed on the electrochemical workstation and save the data, and further process the data in the origin software.

[0062] Example 4: Photoelectric response of an artificial neuromorphic photoelectrochemical cooperative sensing device based on two-dimensional perovskite oxide

[0063] like Figure 6 As shown in the figure, the prepared artificial neuromorphic photoelectric cooperative sensing device showed a typical upward plastic photoelectric response under pulsed ultraviolet light, 16 nA@10 pulse stimulation (365 nm ultraviolet light pulse stimulation, pulse duration and interval are both 0.5 seconds). Figure 7 As shown, with further increase of pulse duration, the photocurrent gradually decreased and reversed to a negative response, ~ -16 nA @ 10 pulse stimulations, with a pulse duration of 1 s and an interval of 0.5 s.

[0064] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, the bias voltage to 0.5 V, and the total sampling time to 1800 s.

[0065] (2) Use the laser control device to control the 365 nm laser to emit pulsed laser light ten times in a row with a duration of 0.5 s and a rest period of 0.5 s, and record the current changes of the electrode displayed in the electrochemical workstation.

[0066] Example 5: Phosgene Cooperative Response of an Artificial Neuromorphic Phosgene Cooperative Sensing Device Based on Two-Dimensional Perovskite Oxide

[0067] like Figure 8 As shown, two consecutive light stimuli were applied to the prepared artificial neuromorphic phospho-gas synergistic sensing device in an environment of room temperature, 57% RH, and 5 ppm nitrogen dioxide. The peak excitatory postsynaptic current (ΔEPSC) generated by the first stimulus (A1) was higher than the current caused by the second stimulus (A2), showing a negative response photocurrent (ΔEPSC = -28 nA) different from that when stimulated by gas or light alone. This is due to the synergistic effect of phospho-gas, which caused the device to generate irrecoverable photocurrent and the paired pulse inhibition phenomenon. This proves that the device can replicate the biological process of neurons receiving two consecutive spikes and transmitting negative postsynaptic responses.

[0068] The steps include:

[0069] (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, the bias voltage to 0.5 V, and the total sampling time to 4000 s.

[0070] (2) At room temperature and 57% RH, the device was placed in a transparent, closed chamber. The nitrogen dioxide concentration inside the chamber was set to 5 ppm using a gas diluter. A laser control device was used to control the device in the chamber to emit two consecutive 0.5 s pulses of laser light with a 0.5 s interval. The current changes of the electrodes displayed on the electrochemical workstation were recorded.

[0071] Summary: The prepared artificial neuromorphic phosphine cooperative sensing device based on two-dimensional perovskite oxide has a downward synaptic inhibitory current response of about -28nA to two consecutive 0.5 s / 0.5 s pulsed 365 nm ultraviolet laser stimulations in a 5 ppm nitrogen dioxide atmosphere (room temperature, 57% RH, 0.5 V bias).

[0072] The prepared artificial neuromorphic phosgene synergistic sensing device based on two-dimensional perovskite oxide can monitor the phosgene synergistic effect and realize the monitoring of ultraviolet-catalyzed water vapor reaction on a single device (room temperature, 57% RH, 0.5 V bias).

[0073] Example 6: Acid rain warning in simulated scenarios using an artificial neuromorphic phosphine cooperative sensing device based on two-dimensional perovskite oxide

[0074] An artificial neuromorphic phosgene cooperative sensing device was placed in a sealed acrylic transparent box, and nitrogen dioxide gas was introduced and photoelectric pulse stimulation was performed to simulate an environment where acid rain may form.

[0075] To demonstrate the potential applications of this synaptic device, six possible scenarios related to acid rain were simulated. Figure 9 As shown, these scenarios include: a coastal chemical plant (room temperature, humidity 85% RH) on a sunny day (simulation conditions: ten consecutive 0.5 s / 0.5 s pulses of 365 nm UV laser stimulation with a UV intensity of 3.2 mW / cm 2 ) emits little or no industrial gas (nitrogen dioxide concentration is less than 5 ppm, scenario 1), on a cloudy day (simulation conditions: ten consecutive 0.5 s / 0.5 s pulses of 365 nm UV laser stimulation, UV intensity of 3.2 mW / cm 2 Small amounts of industrial gases are emitted on cloudy days (Scenarios 2 and 4) and sunny days (Scenario 3), while large amounts (nitrogen dioxide concentrations ≥ 5 ppm) are emitted on cloudy days (Scenario 5) and sunny days (Scenario 6). Scenarios 3, 5, and 6 are more likely to produce acid rain, necessitating early warning. Unlike previous acid rain warning systems that typically require multiple sensors, this system uses a single sensor to provide acid rain warnings based on the synergistic effect of ultraviolet light and nitrogen dioxide.

[0076] The prepared artificial neuromorphic phosgene cooperative sensing device maintains a base current of about 2 μA in the above simulation scenario. Figure 9-10As shown, the initial ΔEPSC current was set to 0 μA, and the alarm threshold was set to -0.3 μA. In scenarios 1-2 (where the risk of acid rain is low), the negative photocurrents did not reach the -0.3 μA threshold, and therefore the warning light did not illuminate. Furthermore, the introduction of nitrogen dioxide alone only produced a positive current response of < 0.1 μA (without the catalytic effect of UV light, the risk of acid rain is also low). In scenarios 3-6 (where both UV light stimulation and high levels of nitrogen dioxide emissions are present, thus posing a higher risk of acid rain), the photocurrents of the neuromorphic device all reached the -0.3 μA threshold, triggering the alarm settings in the back-end circuitry and successfully activating red warning lights for these scenarios.

[0077] The present invention is not limited to the specific technical solutions described in the above embodiments, and all technical solutions formed by equivalent replacement are within the protection scope required by the present invention.

Claims

1. A method for preparing an artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide, characterized in that : Includes the following steps: (1) Titanium sulfate and lanthanum nitrate were dispersed in deionized water, stirred, and then slowly added with NaOH solution after ultrasonic treatment. After stirring, untreated lanthanum titanate nanosheets were prepared by hydrothermal method. (2) dispersing the lanthanum titanate nanosheets prepared in step (1) in ethanol and adding polypyrrolidone, stirring and ultrasonicating, and washing to obtain lanthanum titanate nanosheets; (3) dispersing the lanthanum titanate nanosheets prepared in step (2) in ethanol and spin-coating them onto interdigital electrodes, and connecting the interdigital electrodes to a back-end processing circuit to obtain an artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide; In step (1), 0.4 mM of titanium sulfate, 0.4 mM of lanthanum nitrate, and 2 mL of a 0.125 g / mL aqueous solution of NaOH were added; the stirring rate was 1400 rpm for 2 h; the heating temperature of the hydrothermal method was 200 °C for 10 h; In step (2), the concentration of the lanthanum titanate nanoethanol solution is 50 mg / mL, the volume is 10 mL, and the mass of polypyrrolidone is 10 mg; the ultrasonic time is 4 h; In step (3), the concentration of the lanthanum titanate nanoethanol solution is 50 mg / mL and the volume is 10 mL. Then 20 μL is spin-coated onto the interdigital electrode at a spin-coating speed of 2000 rpm.

2. The method for preparing the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 1, characterized in that : The prepared lanthanum titanate nanosheets have a size of 100 nm and a thickness of 4 nm.

3. An artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide prepared by the method according to claim 1.

4. The application of the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 3, characterized in that: It can be applied to acid rain early warning in coastal chemical industry areas.

5. The application of the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 3, characterized in that: The prepared lanthanum titanate nanosheets can achieve an upward current response to nitrogen dioxide on a double-terminal electrode by spin coating, comprising the following steps: (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V. (2) Use a gas-sensitive diluter to control the nitrogen dioxide concentration inside the cavity where the electrodes are placed, and record the current changes displayed on the electrochemical workstation.

6. The application of the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 3, characterized in that: The prepared lanthanum titanate nanosheets can realize an upward current response to pulsed ultraviolet light on a double-terminal electrode by spin coating, comprising the following steps: (1) Connect the prepared two-terminal electrode to the electrochemical workstation. Set the working state of the electrochemical workstation to it, the sampling interval to 0.1 s, and the bias voltage to 0.5 V. (2) Use the laser control device to control the 365 nm laser to emit pulsed laser light ten times in a row with a duration of 0.5 s and a rest period of 0.5 s, and record the current changes of the electrode displayed in the electrochemical workstation.

7. The application of the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 3, characterized in that: The prepared lanthanum titanate nanosheets were prepared into a two-terminal artificial neuromorphic photogas collaborative sensing device by spin coating, which achieved a downward photocurrent synaptic response to pulsed ultraviolet light in a nitrogen dioxide atmosphere, and the photocurrent had a hysteretic and irreversible current reduction effect.

8. The application of the artificial neuromorphic phosgene cooperative sensing device based on two-dimensional perovskite oxide according to claim 3 is characterized in that: By connecting the device to the back-end processing circuit, it can provide an early warning of potential acid rain risks.

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