A method for indoor termite control and formaldehyde purification treatment

Abstract

The present application belongs to the technical field of indoor environment treatment, and particularly relates to a method for indoor termite prevention and formaldehyde purification treatment. The method comprises the following steps: S1, constructing a humidity control environment to control the indoor relative humidity in the range of 50-60%; S2, applying a formaldehyde purification coating on the surface of indoor walls and / or ceilings; S3, setting a termite trapping device at the indoor wooden structure and building joints; and S4, continuously trapping the indoor termites. The present application precisely controls the indoor relative humidity in the range of 50-60%, which meets the multiple requirements of irreversible reaction of the formaldehyde capturing agent, efficient oxidation of the photocatalyst, stable structure of the bait agent and continuous evaporation of the attractant, and avoids the failure of the functional materials due to improper humidity. The visible light driven formaldehyde catalytic oxidation not only purifies the air, but also generates carbon dioxide to participate in the formation of the attractive atmosphere, so that the termite trapping device obtains a passively enhanced attraction, and the functions of purification and prevention are coupled.

Description

Technical Field

[0001] This invention belongs to the field of indoor environmental management technology, and in particular relates to a method for indoor termite control and formaldehyde purification. Background Technology

[0002] Interior decoration commonly uses engineered wood products and adhesives, which release formaldehyde over a long period, causing indoor air pollution and posing a continuous threat to human health. On the other hand, wooden structures and furniture are frequently damaged by termites. Termites feed on the interior of the wood, reducing its structural strength and causing property damage and safety hazards.

[0003] For formaldehyde pollution, existing photocatalytic purification technologies mostly rely on ultraviolet light excitation, which is difficult to operate efficiently in indoor visible light environments; while adsorption materials can only physically trap formaldehyde, posing a risk of desorption and secondary release. For termites, traditional chemical spraying methods require large amounts of pesticides, and the secondary impact on indoor air and the health of residents cannot be ignored; when using bait devices alone, the termite attraction efficiency is greatly affected by factors such as humidity and the volatilization conditions of the attractant, and the bait is prone to mold and inactivation in humid environments, resulting in a short effective period.

[0004] Existing indoor environmental remediation solutions generally implement formaldehyde purification and termite control separately, lacking a synergistic mechanism and resulting in low resource utilization. Humidity, in particular, significantly impacts both processes but is not utilized uniformly. Therefore, a method integrating humidity control, formaldehyde purification, and termite control is needed for indoor treatment. Summary of the Invention

[0005] The main objective of this invention is to provide a method for indoor termite control and formaldehyde purification to overcome the shortcomings of existing technologies.

[0006] To achieve the aforementioned objectives, the technical solution adopted by this invention includes: According to a first aspect of the present invention, a method for indoor termite control and formaldehyde purification is provided, comprising the following steps: S1. Create a humidity-controlled environment to keep the indoor relative humidity within the range of 50-60%.

[0007] S2. Apply a formaldehyde-purifying coating to the surface of indoor walls and / or ceilings, wherein the formaldehyde-purifying coating contains a photocatalytically active component and a formaldehyde scavenger; wherein the photocatalytically active component is activated under visible light conditions and catalytically oxidizes formaldehyde into carbon dioxide and water; the formaldehyde scavenger contains amino functional groups and undergoes a chemical combination reaction with formaldehyde under non-light conditions.

[0008] S3. Install termite-trapping devices in indoor wooden structures and building gaps. The termite-trapping devices contain termite-control bait containing slow-release insecticidal active ingredients.

[0009] S4. Utilize indoor natural light or auxiliary light source to continuously activate the photocatalytic active component, and coordinate with the termite-trapping device to continuously trap and kill indoor termites.

[0010] This invention maintains a relative humidity of 50-60%, ensuring a stable condensation reaction between -NH2 and formaldehyde in the formaldehyde trap. The termite bait is neither prone to mold growth due to excessive moisture nor to excessive evaporation of the attractant due to excessive dryness. Simultaneously, photocatalytic components such as manganese oxides maintain good surface activity under these humidity conditions. The carbon dioxide generated from the visible light photocatalytic oxidation of formaldehyde diffuses into the indoor microenvironment, combining with the lignin degradation volatiles released from the cellulose matrix in the bait to create an attractive odor field for termites. This causes termites to more specifically gather towards the trapping device, thus mutually enhancing the formaldehyde purification and termite control processes.

[0011] Based on the above methods, the termite trapping device is further optimized: the termite trapping device includes a pre-buried trapping box and / or an above-ground trapping container. The trapping box can be buried below the indoor floor or in the soil near the wall foundation, and the trapping container can be placed under wooden furniture or in a corner. The termite control bait is made by loading the slow-release insecticidal active ingredient onto a cellulose matrix, with an active ingredient content of 0.01% to 5%. After termites feed on the bait, they transfer the active ingredient to the entire colony through cross-feeding behavior, achieving a chain reaction of extermination.

[0012] Preferably, the cellulose matrix is ​​selected from sugarcane bagasse powder and / or bark powder; the slow-release insecticidal active ingredient is carried by a chitosan-graphene oxide composite to form a nano-insecticide formulation. This bait is prepared using a high-temperature, high-pressure process, such as hot-pressing at 120℃~150℃ and 0.15 MPa~0.25 MPa, ensuring its structural integrity and resistance to mold growth in an environment with a relative humidity of 50%~60%, and maintaining a slow-release effect for no less than 30 days.

[0013] For the core functional component of the formaldehyde purification coating, a manganese oxide-supported catalyst is used as the photocatalytic active component. This catalyst uses porous support materials (such as activated alumina, zeolite, and porous silica) as the matrix, and the manganese oxide active component is loaded onto the surface through an impregnation-calcination process. The catalyst achieves a single-pass conversion rate of no less than 85% for formaldehyde oxidation under room temperature and visible light conditions. The accompanying formaldehyde scavenger is a porous adsorption membrane material containing amino acid-grafted hydrocarbon polymers. The polymer chains have -NH2 functional groups grafted onto them, which undergo a condensation reaction with formaldehyde at room temperature and a relative humidity of 50%–60% to generate stable Schiff base products that do not dissociate or release.

[0014] To improve the overall performance of the coating, the mass ratio of photocatalytic active component to formaldehyde scavenger in the formaldehyde purification coating is set to 1:0.2 to 1:5. The coating can be applied by spraying, roller coating, or brushing. The dry film thickness formed on the wall and / or ceiling surface is 10μm to 500μm, and it is transparent or semi-transparent, without affecting the interior appearance.

[0015] Furthermore, additional formaldehyde-binding site materials can be introduced into the formaldehyde scavenger, selected from at least one of amino-containing polymers and hydroxyl-containing bio-based materials. Amino-containing polymers include at least one of urea, glutamic acid, and glycine; hydroxyl-containing bio-based materials include at least one of tea polyphenols, chitosan, and cyclodextrin. These materials can be added alone or blended to further enhance the formaldehyde capture capacity and rate under non-light conditions.

[0016] To improve the accuracy and automation of the operation, the method also includes a termite monitoring step: a sensing module is installed on the termite baiting device to detect termite feeding activity and generate monitoring signals. For example, the sensing module can be a piezoelectric sensor, impedance sensor, or miniature infrared counting device placed below or to the side of the bait. When the monitoring signal indicates that termite activity has reached a preset threshold, it triggers the replenishment of the bait or replacement of the bait, ensuring uninterrupted control.

[0017] When the monitoring signal reaches the threshold, in addition to replacing the bait, the pheromone slow-release device, set within the preset range of the termite trapping device, is simultaneously activated to release termite trace pheromones or aggregation pheromones into the indoor space. At the same time, the output intensity of the auxiliary light source is temporarily reduced to 5%–10% of the full light intensity and maintained for a preset period (e.g., 30–60 minutes). Utilizing the termites' negative phototaxis, the pheromones attract them from brightly lit areas to darker areas, creating a spatial superposition and traction effect that concentrates the termites towards the trapping device, significantly increasing the number of termites attracted per unit time. After the preset period ends, the auxiliary light source automatically returns to its normal output intensity, continuing to maintain its formaldehyde catalytic oxidation function.

[0018] Specifically, the released termite pheromone is (3Z,6Z,8E)-dodecanetrien-1-ol, with a release concentration controlled at 0.05 ng / cm³ to 0.5 ng / cm³. The release duration is synchronized with the slow-release effect of the termite control bait to ensure stable attraction intensity.

[0019] Compared with the prior art, the advantages of the present invention include: This invention provides a method for indoor termite control and formaldehyde purification. By precisely controlling the indoor relative humidity at 50-60%, it satisfies multiple requirements, including the irreversible reaction of formaldehyde traps, efficient oxidation by photocatalysts, stable bait structure, and continuous volatilization of attractants, thus preventing the failure of various functional materials due to improper humidity. Visible light-driven catalytic oxidation of formaldehyde not only purifies the air, but the generated carbon dioxide also participates in creating an attractive atmosphere, passively enhancing the attraction of the termite trapping device, achieving functional coupling of purification and control. A chitosan-graphene oxide composite carrier is used to load slow-release insecticidal active ingredients, molded under high temperature and pressure. It is not prone to mold growth at the target humidity and has a long-lasting effect, achieving colony extermination through termite feeding behavior. The manganese oxide-supported catalyst can be activated under visible light, requiring no ultraviolet light source, and is compatible with indoor lighting conditions. Combined with a porous adsorption membrane trap, it forms an all-weather formaldehyde purification capability without the risk of desorption. Furthermore, the monitoring-feedback-linkage mechanism of this invention, through the synergistic effect of pheromone release and light intensity regulation, further enhances the targeted termite attraction effect, improving the intelligence and response efficiency of the entire system. Detailed Implementation

[0020] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The following will further explain and illustrate this technical solution, its implementation process, and its principles.

[0021] The present invention will now be described in further detail with reference to specific embodiments. The given embodiments are merely illustrative of the invention and not intended to limit its scope. The embodiments provided below can serve as a guide for further improvements by those skilled in the art and do not constitute a limitation on the invention in any way.

[0022] Unless otherwise specified, the experimental methods used in the following embodiments are conventional methods, performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Unless otherwise specified, the materials used in the following embodiments are commercially available.

[0023] This invention provides a method for indoor termite control and formaldehyde purification, comprising the following steps: S1. Construct a humidity-controlled environment, maintaining the indoor relative humidity within the range of 50%–60%. Below this range, the condensation reaction between the amino functional groups in the formaldehyde scavenger and formaldehyde lacks sufficient moisture, resulting in a decreased reaction rate. Above this range, termite control baits are prone to absorbing moisture and becoming moldy, compromising their structural integrity. Simultaneously, an excessively thick water film on the photocatalyst surface may reduce gas-solid contact efficiency. This 50%–60% range ensures that all three types of functional materials are simultaneously within their optimal or usable ranges, providing a unified environmental basis for subsequent steps.

[0024] S2. Apply a formaldehyde-purifying coating to the surface of interior walls and / or ceilings. The formaldehyde-purifying coating contains a photocatalytically active component and a formaldehyde scavenger. The photocatalytically active component, activated under visible light, catalytically oxidizes formaldehyde into carbon dioxide and water. The formaldehyde scavenger contains amino functional groups and chemically binds with formaldehyde under non-light conditions. The formaldehyde-purifying coating contains two types of functional components: visible light-responsive photocatalytically active components and formaldehyde scavengers with amino functional groups. The former addresses the problem of continuous formaldehyde accumulation when the photocatalyst is deactivated at night or under non-light conditions—the scavenger continuously removes formaldehyde through chemical binding under no-light conditions, independent of light. The latter completely mineralizes formaldehyde into carbon dioxide and water under visible light, eliminating the risk of secondary release after the scavenger's capacity becomes saturated. The scavenger and photocatalyst coexist in the coating medium and are spatially adjacent, allowing the captured formaldehyde to be decomposed in situ by the photocatalytic component, achieving regeneration of the capture site and forming a continuous "capture-mineralization" mechanism—a function not possessed by a single photocatalytic coating or a single adsorption coating.

[0025] S3. Termite traps are installed in the indoor wooden structures and building crevices. Each termite trap contains a termite bait containing a slow-release insecticidal active ingredient. The trap also contains a bait mixture containing the slow-release insecticidal active ingredient and a lignocellulose attractant matrix. The lignocellulose attractant matrix continuously releases volatiles that attract termites under 50%–60% relative humidity conditions, ensuring a stable output of attraction intensity.

[0026] S4. Utilize indoor natural light or auxiliary light sources to continuously activate the photocatalytic active components, enabling them to catalytically oxidize formaldehyde into carbon dioxide and water. The carbon dioxide produced in this step itself has a certain attraction effect on termites. In the relatively enclosed microenvironment of an indoor space, the increased local concentration of carbon dioxide, together with the attractant volatiles released by the bait, constitutes a complex attractant odor field, significantly enhancing the termite's directional behavior towards this area. Thus, the formaldehyde purification process not only removes air pollutants but also simultaneously provides passive attraction enhancement for the termite-killing device, resulting in a higher killing effect than schemes that solely rely on bait volatiles. This enhancement effect is continuously applied during the ongoing photocatalytic activity, thereby ensuring the termite-killing device maintains high attraction efficiency during long-term operation.

[0027] Furthermore, the 50-60% humidity control environment simultaneously maintains the effective operation of multiple technical pathways: the irreversible chemical binding of formaldehyde scavengers, the exposure of highly active photocatalyst surfaces, and the stable release and structural integrity of bait attractants. This means that no single step in the entire method gradually deteriorates due to shifts in environmental conditions; each step can operate stably for a long time under unified environmental parameters, and the functions form a technical closed loop through shared environmental conditions and mutual utilization of products.

[0028] To better understand the technical solution of the present invention, the following detailed discussion is provided in conjunction with specific embodiments.

[0029] Example 1 This embodiment provides a method for indoor termite control and formaldehyde purification, including the following steps: Inside the building, dehumidifiers and air conditioning systems are used to adjust the relative humidity to 50%.

[0030] Preparation of formaldehyde purification coating slurry: Take manganese oxide supported catalyst (MnO supported on porous alumina spheres) x A mixture of a porous membrane powder (with a particle size ≤ 5 μm) and a formaldehyde scavenger (amino acid-grafted polyethylene segments, with a grafting rate of 15%) was prepared at a mass ratio of 1:0.2. Deionized water and a small amount of acrylic emulsion dispersant were added, and the mixture was stirred to obtain a uniform slurry. The slurry was then applied to walls and ceilings by spraying to form a coating with a dry film thickness of approximately 10 μm.

[0031] Preparation of termite control bait: Sugarcane bagasse powder and bark powder were mixed at a mass ratio of 2:1 to form a cellulose matrix; chitosan-graphene oxide composite was used as a carrier, and 0.01% flufenoxuron was loaded as a slow-release insecticidal active ingredient. The mixture was thoroughly mixed and then molded into cylindrical bait blocks at 120℃ and 0.15 MPa. The bait blocks were placed in pre-buried bait boxes (buried in the soil near the wall foundation indoors) and above-ground bait boxes (placed in the corner under a wooden cabinet).

[0032] Install auxiliary light source: LED panel light, emitting visible light with a wavelength of 400-780nm, with irradiance controlled at the level of daily indoor lighting, and the light source is continuously on.

[0033] After 30 days of operation and testing, the indoor formaldehyde concentration dropped from the initial 0.18 mg / m³ to below 0.06 mg / m³. The coating still showed effective formaldehyde purification ability even with a relatively thin dry film thickness. The bait did not show any mold growth at 50% relative humidity. The termite feeding activity was captured by the trapping device, and the sensing module (piezoelectric counting unit) recorded the feeding vibration signal. When the signal exceeded the set threshold, it triggered a prompt to replace the spare bait.

[0034] Example 2 This embodiment provides a method for indoor termite control and formaldehyde purification, including the following steps: Inside the building, dehumidifiers and air conditioning systems are used to adjust the relative humidity to 55%.

[0035] Preparation of formaldehyde-purifying coating slurry: Take the same manganese oxide supported catalyst and formaldehyde scavenger as in Example 1, mix them at the stated mass ratio of 1:1, add deionized water and a small amount of acrylic emulsion dispersant, and stir to obtain a uniform slurry. Apply the slurry to the walls and ceiling by spraying to form a coating with a dry film thickness of approximately 100 μm.

[0036] Preparation of termite control bait: Take the same cellulose matrix and carrier material as in Example 1, load 0.1% flufenoxuron, mix thoroughly, and then mold into cylindrical bait blocks at 130°C and 0.20 MPa. The bait blocks are placed in the same way as in Example 1.

[0037] The auxiliary light source conditions are the same as in Example 1, and the formaldehyde purification coating is continuously irradiated.

[0038] After 30 days of operation and testing, the indoor formaldehyde concentration decreased from an initial 0.18 mg / m³ to below 0.04 mg / m³. The coating maintained good formaldehyde oxidation activity, and the purification efficiency was further improved compared to Example 1. No mold growth was observed in the bait, and termites were actively feeding. Observation revealed worker ants active near multiple baiting devices and carrying bait back to their nests. The pheromone slow-release device released (3Z,6Z,8E)-dodecanetrien-1-ol at a concentration maintained at 0.1 ng / cm³, and the auxiliary light source intensity was reduced to 8% of the full light intensity for 40 minutes, resulting in a significant increase in the number of pheromones attracted compared to the unlinked method.

[0039] Example 3 This embodiment provides a method for indoor termite control and formaldehyde purification, including the following steps: Inside the building, dehumidifiers and air conditioning systems are used to adjust the relative humidity to 60%.

[0040] Preparation of formaldehyde-purifying coating slurry: Take the same manganese oxide supported catalyst and formaldehyde scavenger as in Example 1, mix them at a mass ratio of 1:5, add deionized water and a small amount of acrylic emulsion dispersant, and stir to obtain a uniform slurry. Apply the slurry to the walls and ceiling by spraying to form a coating with a dry film thickness of about 500 μm.

[0041] Preparation of termite control bait: Take the same cellulose matrix and carrier material as in Example 1, load 5% flufenoxuron, mix thoroughly, and then mold into cylindrical bait blocks at 150°C and 0.25 MPa. The bait blocks are placed in the same way as in Example 1.

[0042] The auxiliary light source conditions are the same as in Example 1, and the formaldehyde purification coating is continuously irradiated.

[0043] After 30 days of operation and testing, the indoor formaldehyde concentration dropped from the initial 0.18 mg / m³ to below 0.03 mg / m³. The thicker coating had sufficient formaldehyde scavenging capacity, and the formaldehyde capture ability under non-light conditions was significantly enhanced. The bait remained structurally intact at 60% relative humidity and did not show any mold growth. Termites fed on it and carried it back to their nest. After the sensor module triggered the slow release of pheromones and the linkage of light intensity regulation, the attraction effect was further enhanced.

[0044] Example 4 Unlike Example 1, the formaldehyde scavenger uses amino acid-grafted hydrocarbon polymers and is additionally infused with tea polyphenols and urea, resulting in a scavenger containing both -NH2 and phenolic hydroxyl sites. The mass ratio of the photocatalytic active component to the total scavenger is adjusted to 1:3. The coating is applied using a roller coating method, with a dry film thickness of approximately 200 μm. The termite monitoring sensor module employs an image recognition unit; when the number of termite images collected exceeds a preset frame rate, a linkage program is triggered. The resulting indoor formaldehyde purification rate and killing effect are comparable to those of Example 1.

[0045] Example 5 Unlike Example 1, the insecticidal active ingredient in the bait was 0.05% fipronil, the carrier remained a chitosan-graphene oxide composite, and the molding pressure was 0.25 MPa. Pheromone release continued synchronously with the bait replacement cycle for 30 days. Experiments showed that the termite colony mortality rate reached over 95% under this formulation.

[0046] The above embodiments demonstrate that this method, through humidity locking, visible light catalysis, ammonia capture, slow-release bait, and pheromone-light intensity regulation, can continuously and effectively purify indoor formaldehyde and control termite populations simultaneously. The steps are not simply superimposed, but rather form a substantial synergy through humidity environment and carbon dioxide attraction. For different building structures and degrees of infestation, the parameters can be adjusted within the range described in this invention to achieve the desired results.

[0047] Comparative Experiment 1 In the same building interior, the relative humidity was adjusted to 40% using a dehumidifier and air conditioning system. The remaining steps were exactly the same as in Example 2: the same formaldehyde purification coating with the same ratio and thickness was applied, the same termite control bait was placed, the auxiliary light source was kept on continuously, and it was run for 30 days.

[0048] The test results showed that the indoor formaldehyde concentration decreased from the initial 0.18 mg / m³ to 0.09 mg / m³, a significantly smaller decrease than the 0.04 mg / m³ reduction in Example 2. Testing revealed a decrease in the condensation reaction rate between the -NH₂ functional groups and formaldehyde in the formaldehyde trapping agent, resulting in a weakened formaldehyde-trapping ability of the coating during non-light-day periods. Simultaneously, due to low humidity, the cellulose matrix in the bait resulted in insufficient release of attractant volatiles, leading to a decrease of approximately 40% in the frequency of feeding activity recorded by the termite attractant device compared to Example 2. Furthermore, the bait exhibited slight shrinkage; although it did not mold, its palatability decreased.

[0049] Comparative Experiment 2 In the same building, the relative humidity was adjusted to 55%, and the same termite trap and bait as in Example 2 were placed. The auxiliary light source was also turned on, but no formaldehyde-purifying coating was applied to the walls and ceiling.

[0050] The test results showed that the indoor formaldehyde concentration remained at 0.16 mg / m³ after 30 days, with almost no significant purification effect. Although termites were still feeding near the termite trap, the number of termites attracted per unit time was only about 60% of that in Examples 1-2. Analysis indicated that the lack of synergistic effect between the carbon dioxide generated by photocatalytic oxidation and the volatile substances attracted by the bait weakened the directional aggregation effect of termites on the trap, resulting in a significantly lower killing efficiency than in Example 2.

[0051] The comparative tests above demonstrate that controlling the indoor relative humidity within the range of 50%–60%, while simultaneously installing a formaldehyde-purifying coating and a termite-attracting device, can maintain the reactivity of the trapping agent and the bait's attractant efficacy through humidity control. Furthermore, the carbon dioxide generated by visible light catalysis enhances termite attraction, achieving functional coupling and efficiency improvement in formaldehyde purification and termite control. When the humidity deviates from this range or the coating is removed, the corresponding effects significantly decrease.

[0052] The above descriptions are merely some embodiments of the present invention. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A method for indoor termite control and formaldehyde purification, characterized in that, Includes the following steps: S1. Create a humidity-controlled environment to keep the indoor relative humidity within the range of 50-60%; S2. Apply a formaldehyde purification coating to the surface of indoor walls and / or ceilings. The formaldehyde purification coating contains a photocatalytic active component and a formaldehyde scavenger. The photocatalytic active component is activated under visible light and catalytically oxidizes formaldehyde into carbon dioxide and water. The formaldehyde scavenger contains amino functional groups and undergoes a chemical combination reaction with formaldehyde under non-light conditions. S3. Termite trapping devices are installed in the indoor wooden structure and building gaps. The termite trapping devices contain termite control bait, which contains slow-release insecticidal active ingredients. S4. Utilize indoor natural light or auxiliary light source to continuously activate the photocatalytic active component, and work in conjunction with the termite-trapping device to continuously trap and kill indoor termites.

2. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, The termite trapping device includes a pre-embedded trapping box and / or an above-ground trapping container. The trapping box is buried in the soil below the indoor floor or near the wall foundation, and the trapping container is placed under wooden furniture or in a corner. The termite control bait is made by loading the slow-release insecticidal active ingredient onto a cellulose matrix, and the content of the slow-release insecticidal active ingredient is 0.01% to 5%.

3. The method for indoor termite control and formaldehyde purification according to claim 2, characterized in that, The cellulose matrix includes sugarcane bagasse powder and / or bark powder, and the slow-release insecticidal active ingredient includes a nano-insecticide formulation with chitosan-graphene oxide composite as a carrier; the termite control bait is prepared by a high-temperature and high-pressure process, and maintains structural stability and is not prone to mold growth under the relative humidity of 50% to 60% as described in claim 1, with a slow-release effect of not less than 30 days.

4. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, The photocatalytic active component is a manganese oxide supported catalyst, which uses a porous support material as a matrix and loads the manganese oxide active component on the surface of the porous support material.

5. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, The formaldehyde scavenger is a porous adsorption membrane material, which contains an amino acid-grafted hydrocarbon polymer. The amino acid-grafted hydrocarbon polymer has a -NH2 functional group, which undergoes a condensation reaction with formaldehyde at room temperature to form a stable product.

6. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, The mass ratio of the photocatalytic active component to the formaldehyde scavenger in the formaldehyde purification coating is 1:0.2 to 1:

5. The formaldehyde purification coating is applied to the surface of indoor walls and / or ceilings by spraying, roller coating or brushing to form a transparent or semi-transparent functional coating with a dry film thickness of 10μm to 500μm.

7. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, The formaldehyde scavenger also includes amino-containing polymers and / or hydroxyl-containing bio-based materials, wherein the amino-containing polymers include at least one of urea, glutamic acid, and glycine, and the hydroxyl-containing bio-based materials include at least one of tea polyphenols, chitosan, and cyclodextrin.

8. The method for indoor termite control and formaldehyde purification according to claim 1, characterized in that, It also includes an indoor termite monitoring step: a sensor module is installed on the termite trapping device, the sensor module is used to detect termite feeding activities and generate monitoring signals; When the monitoring signal indicates that termite activity has reached a preset threshold, the operation of replenishing the pesticide or changing the bait is triggered.

9. The method for indoor termite control and formaldehyde purification according to claim 8, characterized in that, When the monitoring signal indicates that termite activity has reached a preset threshold, the triggering operation further includes activating a pheromone slow-release device set within a preset range of the termite trapping device to release termite trace pheromones or aggregation pheromones into the indoor space. At the same time, the output light intensity of the auxiliary light source is temporarily reduced to 5% to 10% of the full light intensity and maintained for a preset time period. The termites are concentrated and guided to the termite trapping device by the synergistic effect of the termites' negative phototaxis and pheromone attraction. After the preset time period ends, the normal output light intensity of the auxiliary light source is restored.

10. The method for indoor termite control and formaldehyde purification according to claim 9, characterized in that, The termite trace pheromone is (3Z,6Z,8E)-dodecanetrien-1-ol, with a release concentration of 0.05 ng / cm³ to 0.5 ng / cm³, and the release duration is synchronized with the slow-release effect of the termite control bait.