Photocatalyst illumination adjusting device and preparation method of photocatalyst

Abstract

The invention discloses a photocatalyst illumination adjusting device and a photocatalyst preparation method, belongs to the technical field related to photocatalysis, and aims to solve the problems that an existing photocatalyst is usually independently used, so that the photocatalyst is difficult to fully absorb photons when being used indoors or in a machine, and needs to be matched with light supplementing equipment for common use; the photocatalyst needs to be manually supplemented when an existing photocatalyst sprinkling can is used, and operation is difficult when the existing photocatalyst sprinkling can is used. Through the arrangement of the illumination spraying mechanism, the illumination angle is adjusted, the spraying space is conveniently adapted, through the matched arrangement of the storage box mechanism and the pressurizing mechanism, a photocatalyst in a moving box can be sucked into a spraying pipe, independent supplementing is not needed, when a push rod pushes forwards, a plug plate is squeezed forwards, and the spraying effect is improved. The photocatalyst can be sprayed forwards through the nozzle assembly, N2 + CO2 + H2O is generated through mixed calcination of anatase phase TiO2 and urea at the temperature of 500 DEG C, and the photocurrent density of a final product is effectively improved in the atmosphere of N2.

Description

Technical Field

[0001] The present invention relates to the technical field of photocatalysis, and particularly relates to a photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst. Background Art

[0002] With the rapid development of social economy, more and more environmental problems have emerged. Environmental pollution and energy crisis are the most prominent problems among them. Air pollution is a major component of environmental pollution, and nitrogen oxides in air pollutants have attracted more and more attention from researchers. Against the background of energy crisis, it is urgent to develop an environmentally friendly method for treating nitrogen oxides. The photocatalytic technology driven by sunlight is precisely an advanced oxidation technology that can take into account both cleanliness and environmental protection.

[0003] Existing photocatalysts are usually used alone, resulting in difficulty for photocatalysts to fully absorb photons when used indoors or in machines, and they need to be used in conjunction with light supplement devices. Moreover, existing photocatalyst spray bottles require manual replenishment of photocatalysts, and the operation is difficult during use.

[0004] To solve the above problems, a photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst, which solve the problems in the background art that existing photocatalysts are usually used alone, resulting in difficulty for photocatalysts to fully absorb photons when used indoors or in machines, and they need to be used in conjunction with light supplement devices. Moreover, existing photocatalyst spray bottles require manual replenishment of photocatalysts, and the operation is difficult during use.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst, including a storage box mechanism, an upper end of the storage box mechanism is connected to a light irradiation spraying mechanism, a pressurizing mechanism is screwed on one side of the light irradiation spraying mechanism. The storage box mechanism includes a moving box and a hose fixedly arranged on the upper end of the moving box. The light irradiation spraying mechanism includes a kit connected to the upper end of the hose. One end of the kit is rotatably connected to a nozzle assembly. A light irradiation assembly is slidably sleeved on the nozzle assembly. A plug plate is elastically connected to one side of the nozzle assembly. The plug plate is movably arranged inside the kit. The pressurizing mechanism includes a spray pipe connected to one side of the kit. A push rod is slidably arranged inside the spray pipe.

[0007] Further, handles are fixedly arranged on both sides of the spray pipe. A glass tube for easy observation is arranged on the side surface of the spray pipe. An air hole is opened on one side of the spray pipe.

[0008] Further, a rubber plug is fixedly arranged at the front end of the push rod.

[0009] Further, a water inlet pipe for connecting a hose is fixedly arranged on one side of the kit, and a tapered hole is formed inside the kit.

[0010] Further, the nozzle assembly further includes a tapered nozzle arranged on one side for spraying, a spring member is fixedly arranged on one side of the nozzle assembly, and the spring member is connected to the plug plate.

[0011] Further, the lighting assembly includes an annular block sleeved on the kit, and a threaded block is threadedly connected to the annular block.

[0012] Further, the lighting assembly further includes connecting rods rotatably arranged on both sides of the annular block, a lighting lamp is rotatably arranged on one side of each connecting rod, a transfer sleeve is rotatably arranged between the two lighting lamps, and a rotary plug is rotatably sleeved on the nozzle assembly, and the rotary plug is used for squeezing and fixing the transfer sleeve.

[0013] Another technical solution proposed by the present invention: Provide a preparation method of a photocatalyst, including the following steps:

[0014] S1: Raw material preparation: Select tetrabutyl titanate Ti(OC4H9)4 with a purity greater than 99.9%, ethanol C2H5OH with a water content less than 50 ppm, nitric acid HNO3, and deionized water H2O;

[0015] S2: Sol preparation: Mix to form a sol;

[0016] S3: Static gelation: The sol is left standing at 25°C for 48 hours to be converted into a wet gel, and the wet gel is aged in a constant temperature water bath at 60°C for 12 hours to form a dry gel;

[0017] S4: Oven drying: Dry in an oven at 80°C for 24 hours to obtain a white block;

[0018] S5: Calcination crystallization: Heat up to 450°C to achieve TiO2 crystallization, and the product is anatase-phase TiO2.

[0019] The sol preparation includes the following steps:

[0020] S21: Preparation of mixture A: Stir tetrabutyl titanate and ethanol in a ratio of 1:4 evenly, without chemical reaction, to form a homogeneous solution mixture A;

[0021] S22: Preparation of mixture B: Mix nitric acid, deionized water, and ethanol in a ratio of 1:2:5, and stir until transparent;

[0022] S23: Dropwise addition preparation: Gradually add mixture B drop by drop into mixture A until the pH value reaches 2.5, stir to form a transparent solution, and catalyze the hydrolysis of Ti(OC4H9)4 to generate TiO2 sol. The chemical formula is Ti(OC4H9)4 + 2H2O → TiO2 + 4C4H9OH.

[0023] Furthermore, the anatase TiO2 product is finally mixed and calcined with urea at a calcination temperature of 500 °C.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. A photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst provided by the present invention, through the setting of the light irradiation spraying mechanism, the nozzle assembly is connected by screws and is easy to disassemble. The light irradiation assembly is movably sleeved on the kit and the nozzle assembly to realize the adjustment of the light irradiation angle, which is convenient for adapting to the spraying space, and solves the problem that the existing photocatalyst is usually used alone, resulting in difficulty in fully absorbing photons when the photocatalyst is used indoors or in a machine, and it needs to be used in combination with a light supplement device.

[0026] 2. A photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst provided by the present invention, through the combined setting of the storage box mechanism and the pressurization mechanism, the nozzle assembly realizes the spraying of the photocatalyst. The push rod is slidably arranged inside the spray pipe. When the spray pipe moves backward, the plug plate moves backward under the action of air pressure to block one side of the kit, so that the photocatalyst in the moving box can be sucked into the spray pipe without separate supplementation. When the push rod pushes forward, the plug plate is squeezed forward, so that the photocatalyst can be sprayed forward through the nozzle assembly, solving the problem that the existing photocatalyst sprayer needs to manually supplement the photocatalyst and is difficult to operate during use.

[0027] 3. A photocatalyst light irradiation adjustment device and a preparation method of a photocatalyst provided by the present invention, through the 500 °C mixed calcination of anatase TiO2 and urea, generating N2 + CO2 + H2O, effectively improving the photocurrent density of the final product in the atmosphere of N2. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the photocatalyst light irradiation adjustment device of the present invention;

[0029] Figure 2 is the structural schematic diagram of the pressurization mechanism of the present invention;

[0030] Figure 3 is the overall side view structural schematic diagram of the present invention;

[0031] Figure 4 is the split structural schematic of the light irradiation spraying mechanism of the present invention Figure 1 ;

[0032] Figure 5 It is a structural schematic diagram of the storage box mechanism of the present invention;

[0033] Figure 6 Schematic diagram of the split structure of the light spraying mechanism of the present invention Figure 2 ;

[0034] Figure 7 Schematic diagram of the dissected structure of the illumination spraying mechanism of the present invention;

[0035] Figure 8 It is a schematic diagram of the dissected side structure of the present invention.

[0036] In the figure: 1. Storage box mechanism; 11. Moving box; 12. Hose; 2. Pressurizing mechanism; 21. Nozzle; 211. Handle; 212. Glass tube; 213. Air hole; 22. Push rod; 221. Rubber plug; 3. Illumination spraying mechanism; 31. Kit; 311. Water inlet pipe; 312. Conical hole; 32. Nozzle assembly; 321. Conical nozzle; 322. Spring member; 323. Plug plate; 33. Illumination assembly; 331. Ring block; 332. Threaded block; 333. Connecting rod; 334. Light; 335. Adapter sleeve; 336. Rotating plug. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0038] In order to solve existing technical problems such as Figures 1 - 8 As shown, the following preferred technical solutions are provided:

[0039] A photocatalyst illumination adjustment device and a method for preparing a photocatalyst include a storage box mechanism 1, the upper end of the storage box mechanism 1 is connected to a light spraying mechanism 3, one side of the light spraying mechanism 3 is screwed to a pressurizing mechanism 2, the storage box mechanism 1 includes a movable box 11, a hose 12 fixedly arranged at the upper end of the movable box 11, the light spraying mechanism 3 includes a kit 31 connected to the upper end of the hose 12, one end of the kit 31 is rotatably connected to a nozzle assembly 32, a light assembly 33 is slidably sleeved on the nozzle assembly 32, one side of the nozzle assembly 32 is elastically connected to a plug plate 323, the plug plate 323 is movably arranged inside the kit 31, and the pressurizing mechanism 2 includes a nozzle 21 connected to one side of the kit 31, and a push rod 22 is slidably arranged inside the nozzle 21.

[0040] Specifically, a hose 12 is connected to one side of the kit 31, and the mobile box 11 has a built-in photocatalyst. The setting of the hose 12 connects the mobile box 11 and the kit 31, and the nozzle assembly 32 is connected to the kit 31 at one end. The setting of the nozzle assembly 32 realizes the spraying of the photocatalyst, and the screw connection of the nozzle assembly 32 is easy to disassemble. The illumination assembly 33 is movably sleeved on the kit 31 and the nozzle assembly 32 to realize the adjustment of the illumination angle, which is convenient for adapting to the spraying space. The push rod 22 is slidably set inside the nozzle 21. When the nozzle 21 moves backward, the plug plate 323 moves backward under the action of air pressure to block one side of the kit 31, so that the photocatalyst built into the mobile box 11 can be sucked into the inside of the nozzle 21 without the need for separate replenishment. When the push rod 22 is pushed forward, the plug plate 323 is squeezed forward, so that the photocatalyst can be sprayed forward through the nozzle assembly 32.

[0041] Handles 211 are fixedly provided on both sides of the nozzle 21, and a glass tube 212 for easy observation is provided on the side of the nozzle 21. An air hole 213 is opened on one side of the nozzle 21. The setting of the handle 211 is convenient for manual picking up, and the setting of the glass tube 212 is convenient for observing the reagent spray volume. The air hole 213 allows the air pressure to be discharged when the push rod 22 moves.

[0042] A rubber plug 221 is fixedly provided at the front end of the push rod 22 , and the rubber plug 221 is slidably provided inside the nozzle 21 .

[0043] A water inlet pipe 311 for connecting the hose 12 is fixedly provided on one side of the kit 31. A conical hole 312 is provided inside the kit 31. The setting of the water inlet pipe 311 facilitates the connection of the hose 12 for absorbing the photocatalyst. A plug plate 323 is built into the conical hole 312. After the plug plate 323 is squeezed, it is suspended between the plug plate 323 and the conical hole 312, which facilitates the photocatalyst to move forward and spray.

[0044] The nozzle assembly 32 also includes a conical nozzle 321 arranged on one side for spraying. A spring member 322 is fixedly arranged on one side of the nozzle assembly 32. The spring member 322 and the plug plate 323 are connected to each other. The conical nozzle 321 is used to spray the photocatalyst outward, and the spring member 322 provides elastic force for the plug plate 323.

[0045] The lighting assembly 33 includes a ring block 331 that is sleeved on the sleeve 31 . A threaded block 332 is threadedly connected to the ring block 331 . The threaded block 332 is rotatable to fix the position of the ring block 331 on the sleeve 31 .

[0046] The lighting component 33 further includes connecting rods 333 rotatably arranged on both sides of the ring block 331. One side of the connecting rod 333 is rotatably provided with a lighting lamp 334. A transfer sleeve 335 is rotatably arranged between the two groups of lighting lamps 334. A rotary plug 336 is rotatably sleeved on the nozzle assembly 32. The rotary plug 336 is used to squeeze and fix the transfer sleeve 335. The connecting rod 333 is rotatably arranged, and the lighting lamp 334 adjusts the angle to realize the lighting adjustment. The transfer sleeve 335 is squeezed and fixed by the rotary plug 336.

[0047] To further better explain and illustrate the above embodiments, the present invention also provides an implementation scheme, a preparation method of a photocatalyst, including the following steps:

[0048] Step 1: Raw material preparation: Select tetrabutyl titanate Ti(OC4H9)4 with a purity greater than 99.9%, ethanol C2H5OH with a water content less than 50 ppm, nitric acid HNO3, and deionized water H2O;

[0049] Step 2: Sol preparation: Mix to form a sol;

[0050] Step 3: Static gelation: The sol is left standing at 25°C for 48 hours to be converted into a wet gel. The wet gel is aged in a constant temperature water bath at 60°C for 12 hours to form a dry gel;

[0051] Step 4: Oven drying: Dry in an oven at 80°C for 24 hours to obtain a white block;

[0052] Step 5: Calcination crystallization: Heat up to 450°C to achieve TiO2 crystallization, and the product is anatase-phase TiO2.

[0053] The sol preparation includes the following steps:

[0054] Step 1: Preparation of mixture A: Stir tetrabutyl titanate and ethanol in a ratio of 1:4 evenly, without chemical reaction, to form a homogeneous solution mixture A. Ethanol is used as a solvent to reduce the hydrolysis rate of TTIP and avoid rapid precipitation;

[0055] Step 2: Preparation of mixture B: Mix nitric acid, deionized water, and ethanol in a ratio of 1:2:5, and stir until transparent. Nitric acid provides H + to accelerate hydrolysis, inhibit particle agglomeration, and form an electrostatic stable layer;

[0056] Step 3: Dropwise addition preparation: Dropwise add mixture B into mixture A until the pH value is 2.5, and stir to form a transparent solution, catalyze the hydrolysis of Ti(OC4H9)4 to generate TiO2 sol, with the chemical formula Ti(OC4H9)4 + 2H2O → TiO2 + 4C4H9OH. Nano-TiO2 particles are dispersed in alcohol, and the generated butanol C4H9OH is used as a by-product.

[0057] The anatase-phase TiO2 product is finally mixed with urea and calcined at a temperature of 500 °C. The hydrolysis temperature of the calcined TiO2 is 40 °C, enabling the hydrolysis of the photocatalyst for spraying.

[0058] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0059] As mentioned above, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A photocatalyst light irradiation adjustment device, comprising a storage box mechanism (1), characterized in that: The upper end of the storage box mechanism (1) is connected to a light spraying mechanism (3), and one side of the light spraying mechanism (3) is screw-connected to a pressurizing mechanism (2); The storage box mechanism (1) comprises a mobile box (11), a hose (12) fixedly arranged at the upper end of the mobile box (11), the illumination spraying mechanism (3) comprises a kit (31) connected to the upper end of the hose (12), one end of the kit (31) is rotatably connected to a nozzle assembly (32), an illumination assembly (33) is slidably sleeved on the nozzle assembly (32), one side of the nozzle assembly (32) is elastically connected to a plug plate (323), and the plug plate (323) is movably arranged inside the kit (31), and the pressurizing mechanism (2) comprises a nozzle (21) connected to one side of the kit (31), and a push rod (22) is slidably arranged inside the nozzle (21).

2. The photocatalyst illumination adjustment device according to claim 1, wherein: Handles (211) are fixedly provided on both sides of the nozzle (21), a glass tube (212) for easy observation is provided on the side of the nozzle (21), and an air hole (213) is opened on one side of the nozzle (21).

3. The photocatalyst illumination adjustment device according to claim 2, wherein: A rubber plug (221) is fixedly provided at the front end of the push rod (22).

4. The photocatalyst illumination adjustment device according to claim 3, wherein: A water inlet pipe (311) for connecting a hose (12) is fixedly provided on one side of the kit (31), and a tapered hole (312) is provided inside the kit (31).

5. The photocatalyst illumination adjustment device according to claim 4, characterized in that: The nozzle assembly (32) further comprises a conical nozzle (321) arranged on one side for spraying. A spring member (322) is fixedly arranged on one side of the nozzle assembly (32), and the spring member (322) and the plug plate (323) are connected to each other.

6. The photocatalyst illumination adjustment device according to claim 5, characterized in that: The lighting assembly (33) comprises a ring block (331) sleeved on the sleeve (31), and a threaded block (332) is threadedly connected to the ring block (331).

7. The photocatalyst illumination adjustment device according to claim 6, characterized in that: The illumination assembly (33) further comprises a connecting rod (333) rotatably arranged on both sides of the ring block (331); a lighting lamp (334) is rotatably arranged on one side of the connecting rod (333); an adapter sleeve (335) is rotatably arranged between two groups of the lighting lamps (334); a rotating plug (336) is rotatably sleeved on the nozzle assembly (32); and the rotating plug (336) is used to squeeze and fix the adapter sleeve (335).

8. A method for preparing a photocatalyst as claimed in claim 7, characterized in that, The following steps are involved: S1: Raw material preparation: select tetrabutyl titanate Ti(OC4H9)4 with a purity greater than 99.9%, ethanol C2H5OH with a water content less than 50ppm, nitric acid HNO3 and deionized water H2O; S2: Sol preparation: mixing to form sol; S3: Standing gel: The sol was allowed to stand at 25°C for 48 hours to convert into a wet gel, which was then aged in a constant temperature water bath at 60°C for 12 hours to form a dry gel; S4: Oven drying: drying at 80°C for 24 hours to obtain a white block; S5: Calcination and crystallization: Raise the temperature to 450°C to achieve TiO2 crystallization, and the product is anatase phase TiO2.

9. A method for preparing a photocatalyst as described in claim 8, characterized in that, The sol preparation includes the following steps: S21: Preparation of mixed solution A: Tetrabutyl titanate and ethanol are stirred evenly in a ratio of 1:4 without chemical reaction to form a homogeneous solution mixed solution A; S22: Preparation of mixture B: Mix nitric acid, deionized water and ethanol in a ratio of 1:2:5, and stir until transparent; S23: Dropwise addition preparation: Gradually add mixture B dropwise to mixture A until the pH value reaches 2.5, stir to form a transparent solution, and catalyze the hydrolysis of Ti(OC4H9)4 to generate TiO2 sol, with the chemical formula Ti(OC4H9)4 + 2H2O → TiO2 + 4C4H9OH.

10. A method for preparing a photocatalyst as claimed in claim 9, characterized in that, The anatase phase TiO2 product is finally mixed and calcined with urea at a calcination temperature of 500 °C.

Images