KR20150033338A - Carbon-doped metal oxide-containing porous structure, preparing method of the same, and photocatalyst including the same - Google Patents

Abstract

The present invention relates to a carbon-doped metal oxide-containing porous structure, which improves absorbance and photocatalyst activity by doping carbon on a metal oxide-containing porous structure, a manufacturing method thereof and a photocatalyst including the carbon-doped metal oxide-containing porous structure.

Description

TECHNICAL FIELD The present invention relates to a carbon-doped metal oxide-containing porous structure, a method of manufacturing the same, and a photocatalyst including the above-described metal-oxide-containing porous structure,

The present invention relates to a carbon-doped metal oxide-containing porous structure, a method for producing the carbon-doped metal oxide-containing porous structure, and a photocatalyst comprising the carbon-doped metal oxide-containing porous structure.

Generally, a photocatalyst is an excited state when light having energy greater than the bandgap energy of a material having a semiconductor property, that is, a substance that accepts light and promotes a chemical reaction, This reaction is called photochemical reaction. Examples of the photocatalyst include TiO ₂ , ZnO, Nb ₂ O ₅ , WO ₃ , SnO ₂ , ZrO ₂ , Ru ^{2 +} , CdS and ZnS. When such a photocatalyst is irradiated with ultraviolet rays, oxygen molecules are adsorbed to or desorbed from organic compounds such as malodorous components, thereby exhibiting a function of promoting decomposition. Therefore, the photocatalytic technology can use the solar energy that does not cause environmental pollution, does not cause slurry, and has a high photodegradation rate with respect to the organic compound, which is a biodegradable material, and thus can overcome the difficulties of the conventional environmental treatment technology. As a result, there is a desperate need to manufacture materials for maximizing the performance of photocatalyst in the field of new material development in environmental technology and energy, and to study its application.

The most widely used photocatalyst is TiO _2. First of all, the photocatalytic activity is high in various fields such as the oxidation removal reaction of CO and the treatment of pollutants in the treatment of high density dyeing wastewater. In the second place, Stable, the third is harmless, non-toxic, and the fourth is cheap. In addition, TiO ₂ has a microbiological sterilizing function and is very suitable as an environmental purification catalyst. However, the photocatalyst using TiO ₂ has a disadvantage in that the absorbance and photocatalytic activity in the visible light region are very low. On the other hand, Korean Patent No. 10-0825084 discloses a method for producing a titanium dioxide photocatalyst sol and a method for producing a titanium dioxide photocatalyst containing the same, but still has the above disadvantages.

Accordingly, the present invention provides a photocatalyst comprising a carbon-doped metal oxide-containing porous structure, a method of preparing the carbon-doped metal oxide-containing porous structure, and a carbon-doped metal oxide-containing porous structure .

However, the problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

A first aspect of the present invention is a method for fabricating a metal oxide-containing nanoparticle, comprising the steps of: forming a first metal oxide-containing porous structure, a second metal oxide-containing nanoparticle formed on the surface of the first metal oxide- Doped metal oxide-containing porous structure, which comprises the carbon that has been doped.

According to a second aspect of the present invention, there is provided a method for manufacturing a semiconductor device, comprising: forming a sacrificial layer containing polymeric colloid particles on a substrate; Injecting a precursor of the first metal oxide into the sacrificial layer; Forming a first metal oxide-containing porous structure by removing the sacrificial layer; Forming a second metal oxide-containing nanoparticle on the surface of the first metal oxide-containing porous structure; Doped metal oxide-containing porous structure, and doping carbon on the surface of the second metal oxide-containing nanoparticle.

A third aspect of the present invention provides a photocatalyst comprising a carbon-doped metal oxide-containing porous structure according to the first aspect of the present invention.

The present invention relates to a method of forming a metal oxide-containing porous structure by forming a first metal oxide-containing porous structure by using polymer colloid particles as a template and forming second metal oxide-containing nanoparticles on the surface of the first metal oxide- The structure can be manufactured in a short time by an easy and economical process. Also, the specific surface area of the metal oxide-containing porous structure may be increased by the porous structure of the metal oxide-containing porous structure, thereby increasing the adsorption amount of the substance and the substance delivery force. In addition, by doping carbon with the metal oxide-containing porous structure, the band gap of the metal oxide can be lowered to improve the absorbance, thereby increasing the photocatalytic activity.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a FE-SEM photograph of a first metal oxide-containing porous structure made according to one embodiment of the present invention.
2 is an FE-SEM photograph showing a carbon-doped metal oxide-containing porous structure produced according to one embodiment of the present invention.
3 is a graph showing absorbance characteristics of the photocatalyst prepared according to one embodiment of the present invention.
4 is a graph showing the activity characteristics of a photocatalyst manufactured according to one embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

Throughout this specification, when a member is "on " another member, it includes not only when the member is in contact with the other member, but also when there is another member between the two members.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The terms "about "," substantially ", etc. used to the extent that they are used throughout the specification are intended to be taken to mean the approximation of the manufacturing and material tolerances inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

The word " step (or step) "or" step "used to the extent that it is used throughout the specification does not mean" step for.

Throughout this specification, the term "combination (s) thereof " included in the expression of the machine form means a mixture or combination of one or more elements selected from the group consisting of the constituents described in the expression of the form of a marker, Quot; means at least one selected from the group consisting of the above-mentioned elements.

Throughout this specification, the description of "A and / or B" means "A or B, or A and B".

Hereinafter, embodiments of the present invention are described in detail, but the present invention is not limited thereto.

A first aspect of the present invention is a method for fabricating a metal oxide-containing nanoparticle, comprising the steps of: forming a first metal oxide-containing porous structure, a second metal oxide-containing nanoparticle formed on the surface of the first metal oxide- Doped metal oxide-containing porous structure, which comprises the carbon that has been doped. The carbon-doped metal oxide-containing porous structure according to the present invention can provide a high specific surface area, thereby increasing the adsorption amount of the substance and the substance transferring power. In addition, by doping carbon with the metal oxide-containing porous structure, the band gap of the metal oxide can be lowered, thereby increasing the optical activity.

In one embodiment herein, the pores of the first metal oxide-containing porous structure are selected from the group consisting of simple cubic, body-centered cubic, face-centered cubic, And may be arranged in an inverse opal structure, but the present invention is not limited thereto. For example, when the first metal oxide-containing porous structure is an inverse opal structure, it is a three-dimensional porous structure, and the particles can be formed by reversing the regularly arranged opal structure, . The inverse opal structure can provide an efficient path for penetration of highly viscous polymers or solid electrolytes through ordered bulk-pores.

In one embodiment of the present invention, the first metal oxide and the second metal oxide are each independently selected from the group consisting of Ti, Cu, Zr, Sr, Zn, In, Yr, La, V, Mo, W, Sn, Al, Y, Sc, Sm, Ga, and combinations thereof. However, the present invention is not limited thereto.

A second aspect of the present invention provides a method of making a carbon-doped metal oxide-containing porous structure, comprising:

Forming a sacrificial layer containing polymeric colloid particles on a substrate;

Injecting a precursor of the first metal oxide into the sacrificial layer;

Forming a first metal oxide-containing porous structure by removing the sacrificial layer;

Forming a second metal oxide-containing nanoparticle on the surface of the first metal oxide-containing porous structure; And

The surface of the second metal oxide-containing nanoparticles is doped with carbon.

According to the present invention, the sacrificial layer may be formed by spin coating or casting a solution containing the polymeric colloid particles on the substrate, and the polymeric colloid particles may be formed by self-assembly to form a sacrificial layer But may not be limited thereto. Thereafter, the sacrificial layer may be removed through a heating and firing process, but may not be limited thereto.

In one embodiment of the present invention, the precursor of the first metal oxide may include, but is not limited to, a precursor capable of causing a sol-gel reaction.

In one embodiment of the invention, the sacrificial layer may include, but is not limited to, being removed by heating at a temperature ranging from about 400 ° C to about 800 ° C. For example, the sacrificial layer may have a thickness of from about 400 캜 to about 800 캜, from about 450 캜 to about 800 캜, from about 500 캜 to about 800 캜, from about 550 캜 to about 800 캜, About 750 ° C to about 750 ° C, about 500 ° C to about 750 ° C, about 550 ° C to about 800 ° C, about 700 ° C to about 800 ° C, about 750 ° C to about 800 ° C, From about 500 캜 to about 700 캜, from about 600 캜 to about 750 캜, from about 650 캜 to about 750 캜, from about 700 캜 to about 750 캜, from about 400 캜 to about 700 캜, About 650 ° C to about 700 ° C, about 650 ° C to about 700 ° C, about 400 ° C to about 650 ° C, about 450 ° C to about 650 ° C, about 500 ° C to about 650 ° C, From about 400 ° C to about 600 ° C, from about 450 ° C to about 600 ° C, from about 500 ° C to about 600 ° C, from about 550 ° C to about 600 ° C, from about 400 ° C to about 650 ° C, About 550 DEG C, about 450 DEG C to about 550 DEG C, about 5 DEG C At a temperature ranging from about 400 캜 to about 550 캜, from about 400 캜 to about 550 캜, from about 400 캜 to about 500 캜, from about 450 캜 to about 500 캜, or from about 400 캜 to about 450 캜 .

In one embodiment of the invention, the formation of the second metal oxide-containing nanoparticles on the surface of the first metal oxide-containing porous structure may be performed by mixing the first metal oxide-containing porous structure with the precursor- But it may be, but not limited to, carrying it in solution and heat-treating it.

In one embodiment herein, the heat treatment may be performed at a temperature ranging from about 400 [deg.] C to about 600 [deg.] C, but may not be limited thereto. For example, the heat treatment may be performed at a temperature of about 400 캜 to about 600 캜, about 450 캜 to about 600 캜, about 500 캜 to about 600 캜, about 550 캜 to about 600 캜, About 500 ° C to about 550 ° C, about 500 ° C to about 550 ° C, about 400 ° C to about 500 ° C, about 450 ° C to about 500 ° C, or about 400 ° C to about 450 ° C, .

In one embodiment of the present invention, the step of doping the surface of the second metal oxide-containing nanoparticles with carbon includes the step of forming a first metal oxide-containing porous structure having the second metal oxide- And then carbonizing the resulting solution in an inert gas atmosphere, but may not be limited thereto.

In one embodiment of the present invention, the degree of carbon-doping of the surface of the second metal oxide-containing nanoparticles may be controlled according to the mass percentage of the carbon precursor resol, but the present invention is not limited thereto.

In one embodiment herein, the carbon precursor resol is selected from the group consisting of phenol-formaldehyde, hydroquinone-formaldehyde, fluoroglucinol-formaldehyde, phenol, phloroglucinol, resorcinol-formaldehyde RF), an aliphatic hydrocarbon-based or aromatic hydrocarbon-based aldehyde having a carbon number of 1 to 20, a monomer selected from the group consisting of sucrose, glucose, xylose, and a combination thereof is condensed with an acid catalyst or a basic catalyst Those prepared by polymerization; Or methacrylate, methyl methacrylate, ethylene glycol dimethacrylate, urea, melamine, CH ₂ = CRR '((meth) acrylate, Wherein R and R 'each independently represent an alkyl group or an aryl group having 1 to 20 carbon atoms, and a combination thereof, is subjected to addition polymerization reaction using a polymerization initiator But may not be limited thereto. For example, the polymerization initiator is not limited as long as it can form an addition polymerization reaction. Examples thereof include azobisisobutyronitrile (AIBN), t-butyl peracetate, But are not limited to, one or more initiators selected from the group consisting of peroxides (BPO), acetyl peroxide, lauryl peroxide, and combinations thereof.

In one embodiment of the present invention, the carbonization in the inert gas atmosphere may be performed in a temperature range of about 700 DEG C or higher, but is not limited thereto.

In one embodiment herein, the size of the polymeric colloidal particles may be from about greater than about 200 nm to about 2 탆, but is not limited thereto. For example, the size of the polymeric colloid particles may be greater than about 200 nm to less than about 2 占 퐉, greater than about 200 nm to less than about 1.8 占 퐉, greater than about 200 nm to less than about 1.6 占 퐉, greater than about 200 nm to less than about 1.4 占 퐉 Greater than about 200 nm and up to about 600 nm, greater than about 200 nm and less than about 400 nm, and greater than or equal to about 200 nm and less than about 400 nm, About 400 nm or more to about 2 占 퐉 or less, about 400 nm or more to about 1.8 占 퐉 or less, about 400 nm or more to about 1.6 占 퐉 or less, about 400 nm or more to about 1.4 占 퐉 or less, about 400 nm or more to about 1.2 占 퐉 or less From about 400 nm or more to about 1 占 퐉 or less, from about 400 nm or more to about 800 nm or less, from about 400 nm or more to about 600 nm or less, from about 600 nm or more to about 2 占 퐉 or less, from about 600 nm or more to about 1.8 占 퐉 or less , About 600 nm or more and about 1.6 m or less, about 600 nm or more From about 600 nm or more to about 1 占 퐉 or less, from about 600 nm or more to about 800 nm or less, from about 800 nm or more to about 2 占 퐉 or less, from about 800 nm or more to about 400 nm or less, from about 600 nm or more to about 1.2 占 퐉 or less, From about 800 nm or more to about 1.6 占 퐉 or less, from about 800 nm or more to about 1.4 占 퐉 or less, from about 800 nm or more to about 1.2 占 퐉 or less, from about 800 nm or more to about 1 占 퐉 or less, About 1 탆 or more to about 1.8 탆 or less, about 1 탆 or more to about 1.6 탆 or less, about 1 탆 or more to about 1.4 탆 or less, about 1 탆 or more to about 1.2 탆 or less, From about 1.2 탆 or more to about 1.8 탆 or less, from about 1.2 탆 or more to about 1.6 탆 or less, from about 1.2 탆 or more to about 1.4 탆 or less, from about 1.4 탆 or more to about 2 탆 or less, About 1.8 탆 or less, about 1.4 탆 or more to about 1.6 탆 or less, about 1.6 탆 or more to about 2 탆 Or less, about 1.6 占 퐉 or more to about 1.8 占 퐉 or less, or about 1.8 占 퐉 or more to about 2 占 퐉 or less, but the present invention is not limited thereto.

In one embodiment of the invention, the polymeric colloid particles are selected from the group consisting of polystyrene (PS), polymethyl methacrylate (PMMA), polystyrene / divinyl benzene (PS / DVB), polyamide, poly (butyl methacrylate) ), And combinations thereof. However, the present invention is not limited thereto.

A third aspect of the present invention provides a photocatalyst comprising the carbon-doped metal oxide-containing porous structure according to the first aspect of the present invention. The present invention can be applied to the carbon-doped metal oxide-containing porous structure according to the first aspect of the present invention. In one embodiment of the present invention, there is an effect of improving the absorbance and optical activity of the photocatalyst by doping carbon on the metal oxide-containing porous structure formed on the substrate, but the present invention is not limited thereto.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to examples and drawings. However, the following examples are given for the purpose of helping understanding of the present invention, but the present invention is not limited to the following examples.

[ Example ]

Example  1: carbon Doped  Photocatalyst manufacture comprising titanium dioxide-containing inverted opal structure

First, to form a thin film, polystyrene particles were coated on a silicon substrate to prepare a polystyrene template having an opal structure, and a solution in which the titanium dioxide precursor was dispersed was coated on the polystyrene template. Thereafter, the polystyrene template was pyrolyzed to prepare a titanium dioxide-containing inverted opal structure, and titanium dioxide nanoparticles were formed on the surface of the titanium dioxide-containing inverted opal structure using a sol-gel method. Finally, the surface of the titanium dioxide nanoparticles was doped with a carbon precursor to prepare a carbon dioxide-doped titanium dioxide-containing reversed opal structure having a three-dimensional structure as a photocatalyst.

More specifically, polystyrene polymer particles having a diameter of 0.7 占 퐉 were coated on a silicon substrate through a self-assembly method to form a sacrificial layer, and then the titanium dioxide precursor was injected and coated on the sacrificial layer. The precursor is a titanium dioxide precursor capable of causing a sol-gel reaction. In this embodiment, a 20% solution of nanostructured & amorphous materials Inc. was used. Thereafter, a heat firing step was performed at a temperature of 500 DEG C for 2 hours to remove the sacrificial layer to obtain a titanium dioxide-containing inverted opal structure. Thereafter, in order to increase the specific surface area of the catalyst, the titanium dioxide-containing inverted opal structure was immersed in an aqueous solution of 0.3 M TiCl ₄ , which is a titanium dioxide precursor solution, and maintained in an oven at 70 ° C. for 1 hour, A titanium dioxide precursor seed was attached to the structure. The titanium dioxide-containing inverted opal structure with the titanium dioxide precursor seeds was further heat treated at 450 DEG C for 30 minutes to form titanium dioxide nanoparticles on the surface. Then, the titanium dioxide-containing reversed opal structure on which the titanium dioxide nanoparticles were formed was spin-coated at 3,000 rpm for 30 seconds using a solution containing 1 wt% to 3 wt% of phenol / formaldehyde (P / F) And carrying out a carbonization operation in an argon atmosphere at a temperature of 900 DEG C for 3 hours to perform carbonization so that the titanium dioxide nanoparticles formed on the titanium dioxide-containing inverted opal structure are doped with carbon to form a carbon-doped titanium dioxide- A photocatalyst comprising an opal structure was prepared.

Experimental Example  1: Electron microscope ( FE - SEM ) analysis

The titanium dioxide-containing inverted opal structure (FIG. 1) obtained in the above example and the titanium dioxide-containing inverted opal structure (FIG. 2) in which the carbon-doped titanium dioxide nanoparticles were formed were analyzed by FE-SEM (Hitachi) kV. The results are shown in FIGS. 1 and 2. FIG.

Experimental Example  2: Absorption measurement

The absorbance of the photocatalyst prepared according to the above example was measured in a wavelength range of 300 nm to 800 nm using a UV-Vis spectrometer (SHIMADZU UV-2550). Specifically, as shown in FIG. 3, the titanium dioxide-containing reversed opal structure (a) in which titanium dioxide nanoparticles doped with carbon are formed and the titanium dioxide-containing inverted opal structure (a) in which titanium dioxide nanoparticles not doped with carbon are formed b), the absorbance of the photocatalyst including the titanium dioxide-containing inverted opal structure (a) formed with the carbon-doped titanium dioxide nanoparticles according to the above-mentioned example was higher than the wavelength (B) to 400 nm (a). It was confirmed that the absorption edge was changed rapidly from 380 nm (b) to 400 nm (a).

Experimental Example  3: Photocatalyst  Activity measurement

The activity of the photocatalyst prepared according to the above example was measured using a 1,000 W xenon lamp equipped with an AM 1.5 G filter and a UV-Vis spectrometer (SHIMADZU UV-2550) And the activity (decomposition degree) of the methylene blue was measured and analyzed. Specifically, as shown in FIG. 4, the titanium dioxide-containing inverse opal structure (a) in which titanium dioxide nanoparticles without carbon doping are formed in the visible light region and the carbon-doped titanium dioxide nano- The activity of photocatalysts including (b) and (c), which are titanium dioxide-containing inverted opal structures with particles formed, are compared. Particularly, the photocatalyst including the titanium dioxide-containing inverted opal structure in which the carbon-doped titanium dioxide nanoparticles are formed can be prepared by using a solution containing 1% by weight of phenol-formaldehyde (P / F) (B) and a photocatalyst (c) prepared by using a solution containing 3% by weight of P / F resole were used to conduct experiments while comparing two types of photocatalysts. As a result of the activity measurement, it was confirmed that the activity of the photocatalyst (b) and the photocatalyst (c) was higher than that of the photocatalyst. The activity of the photocatalyst (c) Of the total number of students.

The photocatalyst containing the carbon-doped titanium dioxide-containing inverted opal structure according to the present invention has pores up to a few micrometers in size, and thus has a high viscosity or a high solid electrolyte And the photocatalyst has an advantage of having a high specific surface area by having a reversed opal structure in which a pattern produced by a self-assembling method of polymer particles is reversed. Also, it was confirmed that the photocatalytic activity can be controlled by controlling the doping degree of carbon according to the mass percentage of phenol / formaldehyde resole, which is a carbon precursor, by increasing the absorbance and activity of the photocatalyst by doping carbon.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .

Claims (15)

A first metal oxide-containing porous structure;
Second metal oxide-containing nanoparticles formed on the surface of the first metal oxide-containing porous structure; And
The surface of the second metal oxide-containing nanoparticles is doped with carbon
Doped metal oxide-containing porous structure.
The method according to claim 1,
Wherein the pores of the first metal oxide-containing porous structure are arranged in the form of a simple cubic system, a body-centered cubic system, a face-centered cubic system, or an inverted opal structure.
The method according to claim 1,
Wherein the first metal oxide and the second metal oxide are each independently selected from the group consisting of Ti, Cu, Zr, Sr, Zn, In, Yr, La, V, Mo, W, Sn, Nb, Mg, Ga, and combinations thereof. ≪ RTI ID = 0.0 > 11. < / RTI >
Forming a sacrificial layer containing polymeric colloid particles on a substrate;
Injecting a precursor of the first metal oxide into the sacrificial layer;
Forming a first metal oxide-containing porous structure by removing the sacrificial layer;
Forming a second metal oxide-containing nanoparticle on the surface of the first metal oxide-containing porous structure; And
Doping the surface of the second metal oxide-containing nanoparticles with carbon
Doped metal oxide-containing porous structure.
5. The method of claim 4,
Wherein the precursor of the first metal oxide comprises a precursor capable of causing a sol-gel reaction. ≪ RTI ID = 0.0 > 11. < / RTI >
5. The method of claim 4,
Wherein the sacrificial layer is removed by heating and firing at a temperature ranging from 400 ° C. to 800 ° C. 2. The method of manufacturing a carbon-doped metal oxide-containing porous structure according to claim 1,
5. The method of claim 4,
The formation of the second metal oxide-containing nanoparticles on the surface of the first metal oxide-containing porous structure includes supporting the first metal oxide-containing porous structure on the precursor-containing solution of the second metal oxide and performing heat treatment Doped metal oxide-containing porous structure.
8. The method of claim 7,
Wherein the heat treatment is performed at a temperature ranging from 400 ° C to 600 ° C. The method of manufacturing a carbon-doped metal oxide-containing porous structure according to claim 1,
5. The method of claim 4,
The doping of carbon on the surface of the second metal oxide-
Spin coating a solution containing a carbon precursor resol on the first metal oxide-containing porous structure on which the second metal oxide-containing nanoparticles are formed;
And carbonizing in an inert gas atmosphere.
Lt; RTI ID = 0.0 > of < / RTI > a carbon-doped metal oxide-containing porous structure.
10. The method of claim 9,
Wherein the degree of carbon-doping of the surface of the second metal oxide-containing nanoparticles can be controlled according to a mass percentage of the carbon precursor resol.
10. The method of claim 9,
The carbon precursor resol may be selected from the group consisting of phenol-formaldehyde, hydroquinone-formaldehyde, fluoroglucinol-formaldehyde, phenol, fluoroglucinol, resorcinol-formaldehyde, aliphatic hydrocarbon or aromatic hydrocarbon having 1 to 20 carbon atoms Wherein the monomer is selected from the group consisting of aldehydes, sucrose, glucose, xylose, and combinations thereof, by condensation polymerization using an acid catalyst or a basic catalyst; Or methacrylate, methyl methacrylate, ethylene glycol dimethacrylate, urea, melamine, CH ₂ = CRR ', where R and R are as defined above, 'Represents an alkyl group or an aryl group having 1 to 20 carbon atoms independently), and a combination thereof, is subjected to addition polymerization reaction using a polymerization initiator. Containing porous structure.
10. The method of claim 9,
Wherein the carbonization in the inert gas atmosphere is performed in a temperature range of 700 ° C or higher.
5. The method of claim 4,
Wherein the size of the polymeric colloid particles is greater than 200 nm and less than or equal to 2 탆.
5. The method of claim 4,
Wherein the polymeric colloid particles are made of polystyrene (PS), polymethylmethacrylate (PMMA), polystyrene / divinylbenzene (PS / DVB), polyamide, poly (butyl methacrylate) (PBMA) Doped metal oxide-containing porous structure.
A photocatalyst comprising the carbon-doped metal oxide-containing porous structure according to any one of claims 1 to 3.

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