Controllable preparation method and application of janus structured phenolic resin and carbon material derived therefrom

Abstract

The application discloses a controllable preparation method and application of Janus structure phenolic resin and derived carbon material, and belongs to the technical field of materials. The Janus structure phenolic resin material has a bottle-shaped structure appearance; the bottle-shaped structure comprises a spherical-bottom bottle body and a bottle mouth in the shape of a droplet; and the bottle neck between the spherical-bottom bottle body and the bottle mouth is dumbbell-shaped with a shrinkage in the middle of the side contour. The application can controllably synthesize Janus structure nanomaterials with specific morphologies by constructing an oil-in-water microemulsion template and adjusting the assembly mode of polymer precursors at the oil-water interface, so that the Janus structure nanomaterials can meet the application requirements in different fields. The application solves the problems of complicated operation process and high requirements in the prior art, and simultaneously, the method is one-pot synthesis, does not need to remove the template twice, is simple in preparation, accurate in control, and green and environment-friendly. The obtained Janus structure phenolic resin material and derived carbon material have potential applications in the fields of energy storage and conversion, catalysis, environmental governance, biological medicine and the like.

Description

Technical Field

[0001] This application relates to the field of nanofunctional materials technology, specifically to a controllable preparation method and application of Janus-structured phenolic resin materials and their derived carbon materials. Background Technology

[0002] Asymmetric nanomaterials have attracted much attention due to their unique structural and functional properties. Compared with isotropic materials, they offer controllable morphology, large specific surface area, abundant porosity, and good thermal stability, demonstrating enormous potential in fields such as biomedicine, energy storage, catalysis, and environmental remediation. Asymmetric nanomaterials also provide crucial guidance for the design and construction of complex supramolecular structures, nanodevices, and efficient biomedical carriers, driving the cutting-edge development of nanotechnology and materials science.

[0003] Janus-structured nanomaterials, as typical asymmetric materials, possess distinct physicochemical properties, such as hydrophilicity / hydrophobicity, in their different components, enabling multifunctional integration. Current synthesis methods (such as template methods, phase separation methods, and microfluidic techniques) generally suffer from cumbersome procedures, demanding equipment requirements, and difficulties in precisely controlling the structure. Therefore, developing novel synthesis strategies that are simple to operate and allow for precise control is crucial for advancing the development and application of Janus materials. Summary of the Invention

[0004] This application aims to overcome the problems of complex synthesis process and insufficient control precision of Janus structured nanomaterials in the prior art. By controlling the surfactant, temperature and alcohol / oil ratio, it provides a simple and morphology-controllable method for preparing bottle-shaped Janus structured nanomaterials.

[0005] The technical solution adopted in this application is as follows:

[0006] A Janus-structured phenolic resin material, characterized in that the Janus-structured phenolic resin material has a bottle-shaped appearance;

[0007] The bottle-shaped structure includes a round-bottomed body with a spherical cap and a flared mouth.

[0008] The bottle neck, which tapers in the middle of its side profile, is a dumbbell-shaped structure between the round-bottomed body and the mouth.

[0009] Optionally, the surface morphology of the bottle opening includes a concave shape, a flat shape, or a convex shape;

[0010] The particle size of the Janus structure phenolic resin material is 0.5~2 μm;

[0011] The diameter of the round-bottomed bottle body is 500~1100 nm, the length of the neck is 100~800 nm, and the width of the neck is 100~1300 nm, wherein the minimum neck width at the neck contraction point is 100~700 nm.

[0012] According to a second aspect of this application, a method for preparing the Janus-structured phenolic resin material is provided, comprising the following steps:

[0013] S1. A mixture containing surfactant, aqueous solvent, oil solvent and phenolic compound is subjected to ultrasonic treatment to obtain an oil-in-water emulsion;

[0014] The surfactants include amphiphilic block copolymers and ionic surfactants;

[0015] The amphiphilic block copolymer is Pluronic F127;

[0016] The ionic surfactant is selected from at least one of decyldimethylammonium bromide, dodecyldimethylammonium bromide, tetradecyldimethylammonium bromide, hexadecyldimethylammonium bromide, and octadecyldimethylammonium bromide;

[0017] S2. Add amine reagent solution and aldehyde compound solution to the oil-in-water emulsion to obtain a mixed system. React the mixed system and centrifuge the product after reaction to obtain the Janus structure phenolic resin material.

[0018] Optionally, the aqueous solvent is water and ethanol.

[0019] Optionally, the oil phase solvent is selected from at least one of toluene, xylene, 1,3,5-trimethylbenzene, 4-methylstyrene, p-chlorotoluene, and nitrobenzene.

[0020] Optionally, in the oil-in-water emulsion, the volume ratio of water to ethanol is 1:0.5~2, and the volume ratio of water to oil phase solvent is 1:0.1~1.

[0021] Optionally, in the oil-in-water emulsion, the volume ratio of water to ethanol is selected from any value or a range between 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, 1:1.2, 1:1.4, 1:1.6, 1:1.8, and 1:2.

[0022] Optionally, in the oil-in-water emulsion, the volume ratio of water to oil phase solvent is any value selected from 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1 or any range between the two.

[0023] Optionally, when the volume ratio of water to ethanol is less than 1, the volume ratio of water to oil is greater than 1.

[0024] Optionally, the phenolic compound is selected from at least one of 2-aminophenol, 3-aminophenol, 4-aminophenol, 3-aminothiophenol, resorcinol, hydroquinone, and pyrogallol.

[0025] Optionally, in the oil-in-water emulsion, the concentration of phenolic compounds is 2-50 g / L, and the concentration of surfactant is 10-50 g / L.

[0026] Optionally, the conditions for ultrasonic treatment include: a treatment temperature of 5~40 ℃ and a treatment time of 10~60 min.

[0027] Optionally, the amine reagent is selected from at least one of ammonia, ethylenediamine, and triethanolamine.

[0028] Optionally, the aldehyde compound is selected from at least one of formaldehyde, glyoxal, succinaldehyde, and benzaldehyde.

[0029] Optionally, the concentration of the amine reagent in the mixed system is 10~100 μL / mL.

[0030] Optionally, the molar ratio of the phenolic compound to the aldehyde compound is 0.25 to 2:1.

[0031] Optionally, the reaction conditions include: the reaction is carried out under stirring at a speed of 100-1000 rpm, the reaction temperature is 20-70 °C, and the reaction time is 0.5-24 h.

[0032] According to a third aspect of this application, a carbon material derived from the aforementioned Janus-structured phenolic resin material or the Janus-structured phenolic resin material obtained by the aforementioned preparation method is provided, wherein the carbon material is obtained by high-temperature calcination of the Janus-structured phenolic resin material.

[0033] According to a fourth aspect of this application, at least one of the Janus-structured phenolic resin materials described above, the Janus-structured phenolic resin materials obtained according to the aforementioned preparation method, or the aforementioned carbon materials is provided for use in the fields of catalysis, adsorption, biomedicine, energy storage and conversion.

[0034] Optionally, the application is to use the Janus structure phenolic resin material as a photocatalyst for photocatalytic production of H2O2.

[0035] Optionally, the photocatalytic production of H2O2 includes the following steps: dispersing the photocatalyst in water to form a dispersion, continuously introducing oxygen into the dispersion, irradiating the dispersion with a visible light source under constant temperature and stirring conditions to carry out a photocatalytic reaction, taking samples at regular intervals during the photocatalytic reaction, and determining the concentration of generated H2O2 using the titanium salt spectrophotometric method.

[0036] The concentration of the photocatalyst in the dispersion is 0.1~10 mg / mL, and the temperature of the photocatalytic reaction is 10~70℃.

[0037] The beneficial effects of this application include:

[0038] (1) This application provides a method for preparing Janus structure phenolic resin materials with mild conditions, simple steps and high yield.

[0039] (2) By adjusting parameters such as reaction time, temperature, alcohol / oil phase ratio and surfactant type, this application can precisely control the morphology of the product, thereby achieving the diversification and controllable preparation of material structure.

[0040] (3) The Janus structural materials and their derived carbon obtained in this application show good application potential in the fields of catalysis, energy, environment and biomedicine. Attached Figure Description

[0041] Figure 1 This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 1 of this application.

[0042] Figure 2 This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 2 of this application.

[0043] Figure 3 This is a transmission electron microscope (TEM) image of the Janus-structured bottle-shaped phenolic resin material prepared under the conditions of Example 3 of this application.

[0044] Figure 4 This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 4 of this application.

[0045] Figure 5 This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 5 of this application.

[0046] Figure 6 This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 6 of this application.

[0047] Figure 7This is a transmission electron microscope (TEM) image of the bottle-shaped phenolic resin material with a Janus structure prepared under the conditions of Example 7 of this application.

[0048] Figure 8 This is a scanning electron microscope image of the Janus-structured spherical phenolic resin material prepared under the conditions of Example 8 of this application.

[0049] Figure 9 This is a scanning electron microscope image of the Janus-structured, double-headed, mushroom-shaped phenolic resin material prepared under the conditions of Comparative Example 1 of this application.

[0050] Figure 10 This is a scanning electron microscope image of the solid phenolic resin ball material prepared under the conditions of Comparative Example 2 of this application.

[0051] Figure 11 This is a comparison graph showing the yield of H2O2 produced by photocatalysis under the conditions of Test Example 1 and Comparative Test Example 1 of this application. Detailed Implementation

[0052] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0053] Unless otherwise specified, all raw materials used in the embodiments of this application were purchased through commercial channels.

[0054] The analysis method in the embodiments of this application is as follows:

[0055] Transmission electron microscopy (TEM) was performed using a Hitachi 7800 microscope, and scanning electron microscopy (SEM) was performed using a Hitachi S-4800 microscope. Photocatalysis was tested and analyzed using a PLS-SME300EH1 xenon lamp and a Thermo Scientific EVOLUTION Pro UV-Vis spectrophotometer.

[0056] Example 1

[0057] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0058] like Figure 1 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 933 nm, a bottleneck length of approximately 192 nm, and a bottleneck width of approximately 452 nm.

[0059] Example 2

[0060] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 24 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0061] like Figure 2 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 794 nm, a bottleneck length of approximately 339 nm, and a bottleneck width of approximately 693 nm.

[0062] Example 3

[0063] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 12 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0064] like Figure 3 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 1041 nm, a bottleneck length of approximately 520 nm, and a bottleneck width of approximately 726 nm.

[0065] Example 4

[0066] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 10 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0067] like Figure 4 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 747 nm, a bottleneck length of approximately 257 nm, and a bottleneck width of approximately 698 nm.

[0068] Example 5

[0069] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 12 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 2 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0070] like Figure 5 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 1091 nm, a bottleneck length of approximately 345 nm, and a bottleneck width of approximately 841 nm.

[0071] Example 6

[0072] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 50 °C and 400 rpm for 12 h with stirring. After the reaction, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0073] like Figure 6 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical portion having a diameter of approximately 891 nm, a bottleneck length of approximately 196 nm, and a bottleneck width of approximately 586 nm.

[0074] Example 7

[0075] 0.05 g of F127 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 70 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0076] like Figure 7 As shown, the obtained material has a regular bottle-shaped morphology, with a spherical part having a diameter of approximately 528 nm, a bottleneck length of approximately 716 nm, and a bottleneck width of approximately 195 nm.

[0077] Example 8

[0078] 0.05 g of F127 and 0.05 g of didecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain the Janus-structured bottle-shaped phenolic resin material.

[0079] like Figure 8 As shown, the obtained material exhibits a double-headed mushroom-shaped morphology (i.e., a bottle-shaped morphology with an enlarged neck and a convex mouth), with a diameter of approximately 997 nm at the larger end, approximately 502 nm at the smaller end, and a longitudinal length of approximately 653 nm.

[0080] Comparative Example 1

[0081] 0.05 g of P105 and 0.05 g of dodecyldimethylammonium bromide were dissolved in a mixed solvent of 10 mL of deionized water and 10 mL of ethanol. 0.1 g of 3-aminophenol was added, and after complete dissolution, 1 mL of 4-methylstyrene was injected as the oil phase. The mixture was sonicated at 25 °C for 20 min to form a homogeneous oil-in-water emulsion. Subsequently, 0.1 mL of ammonia (25 wt.%) and 0.14 mL of formaldehyde aqueous solution (37 wt.%) were added sequentially to the emulsion. The mixture was reacted at 30 °C and 400 rpm for 12 h with stirring. After the reaction was complete, the precipitate was collected by centrifugation and washed three times alternately with water and ethanol. Finally, it was dried in an oven at 40 °C to obtain a Janus-structured spherical phenolic resin material.

[0082] like Figure 9 As shown, the obtained material has a spherical morphology with a diameter of approximately 684 nm and a longitudinal length of approximately 741 nm.

[0083] Comparative Example 2

[0084] Dissolve 0.1 g of 3-aminophenol in 30 mL of deionized water, add 0.2 mL of formaldehyde and 0.2 mL of ammonia, stir at 400 rpm at 30 °C for 30 minutes, collect the precipitate by centrifugation, wash three times with deionized water, and dry in an oven at 40 °C to obtain solid phenolic resin balls.

[0085] Figure 10This is a scanning electron microscope (SEM) image of the solid phenolic resin spheres prepared under the conditions of Comparative Example 2 of this application. The image shows that the diameter of the solid phenolic resin spheres is approximately 489 nm.

[0086] Test Example 1

[0087] Weigh 10 mg of the catalyst prepared in Example 1 into a beaker, add 50 mL of deionized water, and disperse by ultrasonication. Transfer the solution to a photochemical reactor, continuously purge oxygen, and maintain a constant solution temperature using a circulating water pump. Add a magnetic stirrer. Use a 300 W xenon lamp equipped with a 420 nm filter as the light source to drive the reaction. Take 2 mL of the supernatant at 0.5 h, 1 h, 1.5 h, and 2 h of reaction time, and measure the H2O2 concentration using the titanium salt spectrophotometric method.

[0088] Test Comparison Example 1

[0089] Weigh 10 mg of the catalyst prepared in Comparative Example 2 into a beaker, add 50 mL of water, and disperse by ultrasonication. Transfer the solution to a photochemical reactor, continuously purge oxygen, and maintain a constant solution temperature using a circulating water pump. Add a magnetic stirrer. Use a 300 W xenon lamp equipped with a 420 nm filter as the light source to drive the reaction. Take 2 mL of the supernatant at 0.5 h, 1 h, 1.5 h, 2 h, 2.5 h, and 3 h of reaction, and measure the H2O2 concentration using the titanium salt spectrophotometric method.

[0090] Figure 11 This is a comparison graph showing the yield of photocatalytic H2O2 production under the conditions of Test Example 1 and Test Comparative Example 1 of this application. The H2O2 yield of both materials increased with time. After 2 h of reaction, the H2O2 yields of Janus-structured bottle-shaped phenolic resin and solid phenolic resin balls were 22.47 μmol and 19.19 μmol, respectively.

[0091] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A Janus-structured phenolic resin material, characterized in that, The Janus-structured phenolic resin material has a bottle-shaped appearance. The bottle-shaped structure includes a round-bottomed body with a spherical cap and a flared mouth. The bottle neck, which tapers in the middle of its side profile, is a dumbbell-shaped structure between the round-bottomed body and the mouth. The surface morphology of the bottle opening includes a concave shape, a flat shape, or a convex shape. The particle size of the Janus structure phenolic resin material is 0.5~2 μm; The diameter of the round-bottomed bottle body is 500~1100 nm, the length of the neck is 100~800 nm, and the neck width is 100~1300 nm, wherein the minimum neck width at the neck contraction point is 100~700 nm. Its preparation method includes the following steps: S1. A mixture containing surfactant, aqueous solvent, oil solvent and phenolic compound is subjected to ultrasonic treatment to obtain an oil-in-water emulsion; The surfactants include amphiphilic block copolymers and ionic surfactants; The amphiphilic block copolymer is Pluronic F127; The ionic surfactant is selected from at least one of decyldimethylammonium bromide, dodecyldimethylammonium bromide, tetradecyldimethylammonium bromide, hexadecyldimethylammonium bromide, and octadecyldimethylammonium bromide. S2. Add amine reagent solution and aldehyde compound solution to the oil-in-water emulsion to obtain a mixed system, react the mixed system, and centrifuge the product after reaction to obtain the Janus structure phenolic resin material. The aqueous solvent is water and ethanol; The oil phase solvent is selected from at least one of toluene, xylene, 1,3,5-trimethylbenzene, 4-methylstyrene, p-chlorotoluene, and nitrobenzene; In the oil-in-water emulsion, the volume ratio of water to ethanol is 1:0.5~2, and the volume ratio of water to oil phase solvent is 1:0.1~1. When the volume ratio of water to ethanol is less than 1, the volume ratio of water to oil is greater than 1. The phenolic compound is 3-aminophenol; In the oil-in-water emulsion, the concentration of phenolic compounds is 2-50 g / L, and the concentration of surfactant is 10-50 g / L; The conditions for ultrasonic treatment include: a treatment temperature of 5~40 ℃ and a treatment time of 10~60 min; The amine reagent is selected from at least one of ammonia, ethylenediamine, and triethanolamine; The aldehyde compound is formaldehyde; In the mixed system, the concentration of the amine reagent is 10~100 μL / mL; The molar ratio of the phenolic compound to the aldehyde compound is 0.25 to 2:1; The reaction conditions include: the reaction is carried out under stirring at a speed of 100-1000 rpm, the reaction temperature is 20-70 °C, and the reaction time is 0.5-24 h.

2. A carbon material derived from the Janus-structured phenolic resin material of claim 1, characterized in that, The carbon material is obtained by high-temperature calcination of the Janus structure phenolic resin material.

3. The application of at least one of the Janus structure phenolic resin material of claim 1 or the carbon material of claim 2 in the fields of catalysis, adsorption, biomedicine, energy storage and conversion.

4. The application according to claim 3, characterized in that, The application is as follows: using the Janus structure phenolic resin material as a photocatalyst for the photocatalytic production of H2O2.

5. The application according to claim 4, characterized in that, The photocatalytic production of H2O2 includes the following steps: dispersing the photocatalyst in water to form a dispersion, continuously introducing oxygen into the dispersion, irradiating the dispersion with a visible light source under constant temperature and stirring conditions to carry out a photocatalytic reaction, taking samples at regular intervals during the photocatalytic reaction, and determining the concentration of generated H2O2 using the titanium salt spectrophotometric method. The concentration of the photocatalyst in the dispersion is 0.1~10 mg / mL, and the temperature of the photocatalytic reaction is 10~70 ℃.

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