KR20040040749A - Negative-ion-producing photocatalyst hybrid ceramic - Google Patents

Abstract

PURPOSE: Provided is a negative ion generating photocatalyst-ceramic composite in a form of sol or composition, with improved antimicrobial effect, deodorization, far infrared emission, surface activity and hydrophilicity, thereby being suitably applied for air cleaning and water purification, by using TiO2 and tourmaline powder. CONSTITUTION: The negative ion generating photocatalyst-ceramic composite comprises: a TiO2 sol which is made from titanium isopropoxide(Ti£OCH(CH3)2|4) and isopropyl alcohol((CH3)2CHOH); a SiO2 sol or Al2O3 sol which is made from tetraethyl orthosilicate tetraethoxysilane(C8H20O4Si) and isopropyl alcohol((CH3)2CHOH); a tourmaline sol; and silver, respectively, wherein 34wt% of TiO2 sol, 30wt% of tourmaline sol, 35wt% of SiO2 sol or Al2O3 sol, 1wt% of silver are compounded as a solution or a powder.

Description

Negative-ion-producing photocatalyst hybrid ceramic

Due to the development of industry and the increase of population, the natural environment is destroyed, and the environment around our lives is getting worse due to the excessive discharge of pollutants, which causes many social problems.

Bacteria and contaminants are detected in drinking water, daily drinking of polluted air from many automobiles and factories, use of daily necessities made of chemical substances, living in the electromagnetic wave space, food additives containing food additives and pesticides He is eating food made from this oversprayed ingredient.

In addition, we live every day in a space filled with pollutants such as smoking, drinking, dust, ultraviolet rays, and stress.

In such an environment, the constitution rapidly acidifies, causing a high frequency of diseases, leading to premature aging. In addition, due to the toxicity (acidification) of the positive ions (Plus-ion = 活性 酸 素) that the ambient air is incomplete, the corrosion of facilities and structures is increased, and the food decay and deterioration speed is increased. All of this is due to the imbalance of ion distribution in the atmosphere, which rapidly increases toxic incomplete positive ions, and these are absorbed through the human respiratory tract, releasing excess oxygen in the body, causing constitution to cause acidification and disease. do. In addition, polluted and toxic positive ions promote food decay, reduce food freshness, and corrode and destroy buildings and facilities.

Most photocatalyst sol type or composition products manufactured and sold at home and abroad are mainly TiO ₂ (titanium oxide) based photocatalyst sol, or a composition thereof, which acts only when receiving solar energy (ultraviolet). Combined with Tourmaline (Tourmaline), a natural inorganic mineral that can supplement, enhance, and impart additional functional limitations, the existing TiO ₂ based optical peninsula is manufactured and processed by manufacturing and processing multifunctional complex optical semiconductive ceramic sol and composition. New technology has been devised by supplementing the functional limitations of anti-photocatalytic products (antibacterial, deodorizing, etc.), permanent anion generation function, far infrared radiation function, surfactant activity and hydrophilic function.

Tourmaline can be granulated up to 0.1 µm (a method for increasing the surface area), which causes positive and negative electrodes to appear at both ends of the crystal. This is called a 0.06 mA permanent electrode, which acts as an aqueous solution, gas ionization (electrolysis), and flows a weak current at about the same level as dozens of kilowatts flowing through cells of animals and plants.

And these actions are permanent even without supplying energy from the outside. When temperature change (about 10 ℃) or vibration or friction is applied to them, they promote electron generation more than twice as usual, which combines with oxygen in the atmosphere and ionizes them. In addition, it has the property of generating far infrared rays (growth light: wavelength 4-14㎛). This far-infrared rays act on molecules in various substances, and act on the molecules of the human body because they have the action of activating and aligning the molecules by resonance.

In addition, in order to take advantage of the physical properties that generate anions, which are the characteristics of tourmaline, the particles must be separated from the particles. It has positive and negative poles for each particle when it is separated like a magnet, and each particle maintains its polarity to generate electrons that produce negative ions in each particle. There are two particles, but they change to one pole, eventually reducing the formation of anions.

Complementary to the above phenomenon is a TiO ₂ sol, or a composition, such as a mixture plays a role of two or more.

[Method and composition for producing hydrophilic multifunctional anion generating photocatalyst composite ceramic sol combining tourmaline (Tourmaline) and TiO ₂ ] The photocatalyst product is a negative (permanent) Continuous supply of ions to the contaminated material, the unstable positive ion, improves and stabilizes contaminated air, products and materials, purifies atmospheric air, and has additional effects. Anion-generating multifunctional photocatalyst sol (SOL), or composition.

Composition ratio and composition

Generating hydrophilic neutral type composite multifunctional anions according to the invention a photocatalyst composite ceramic is Titanium isopropoxide (Ti [OCH (CH 3) 2] 4) and _{Isopropyl alcohol ((CH 3) 2} CHOH) a TiO ₂ sol, Tetraethyl orthosilicate Tetraethoxysilane made of SiO ₂ sol (or Al ₂ O ₃ sol) made of (C ₈ H ₂₀ O ₄ Si) and Isopropyl alcohol ((CH ₃ ) ₂ CHOH), tourmaline sol and silver were prepared, respectively, and TiO ₂ sol, SiO ₂ sol (= Al ₂ O ₃ sol), characterized in that consisting of an aqueous solution or powder state complexed with tourmaline sol and Silver.

Here, TiO ₂ sol 34% by weight, tourmaline sol 30%, SiO ₂ sol (= Al ₂ O ₃ sol) 35%, characterized in that consisting of an aqueous solution or a powder mixed with a ratio of 1%.

● TiO ₂ photocatalyst sol manufacturing method

○ raw material

Titanium Isopropoxide Ti [OCH (CH ₃ ) ₂ ] ₄ = TTIP --- Aldrich 63,000 / 500mL, rectified water (using rectified groundwater), IPA (Isoproply alcohol) --- 25,000 / 18kg, nitric acid Or hydrochloric acid (currently using nitric acid only)

※ Ti (Oipr) ₄ having a molecular weight (FW) - 284.26 (calculated after the company confirmed it is slightly different for each reagent, Aldrich's products currently we hold is described in Japanese imperialists 284.26 284.23 (City vial)

○ Manufacturing method

First, a certain amount of IPA is mixed in an amount determined according to the concentration to prepare TTIP in the form of titanium alkoxide. The water to be hydrolyzed is then added with 4 mol times the number of moles of TiO ₂ added to the water (dropping method). As soon as the hydrolysis occurs, an opaque sol is formed. Nitric acid was added to obtain and in the academic world there were two effects, nitric acid and hydrochloric acid. Addition of too much acid causes gelation later)

○ TiO ₂ photocatalyst sol concentration calculation method

For example, if 4% TiO ₂ is manufactured, 40g TiO ₂ should be contained in 1L. Therefore, TTIP should be put as much as TiO ₂ is generated.

① TiO ₂ → TTIP

Therefore, it can be seen that the amount of TTIP contained in 1L is 142.3g.

If you find the amount of water added during hydrolysis, look at the reaction

If you look at the equation above, it means that you have to put x moles by n. Here too, other alkoxides can form linear polymers or weakly crosslinked polymers in a well-matched ratio of water (catalyst concentration). As mentioned above, the mole ratio of 4 times the number of moles of TiO ₂ indicates that the thinned polymer is formed.

In order to solve the technical problems as described above, the present invention is to mix the high-purity Tourmaline powder into TiO ₂ photocatalyst products which are currently sold at home and abroad. Jet grinder (model name STJ-400) is used to make primary raw materials with primary particle size of 97% or more (All Pass: with particle size distribution map), chemically react with weak acid, and determine particle size according to the intended use. To TiO ₂ photocatalyst sol.

The photocatalyst composition thus prepared may have different blending ratios depending on the intended use, and when applied to the construction field, air air purification field, etc., the conventional SiO ₂ sol (Al), or Al ₂ O ₃ (alumina) The sol may be mixed, diluted, or coated with a high pressure spray in a 1: 1 ratio. In particular, in the case of alumina sol, its molecular structure is hexagonal and is the same as that of tourmaline, so that the binding and adhesion strength is strong. It is a gray system with a thin color, and can be used as an environmental improvement material in various fields by varying the mixing ratio according to the use field or the manufacturing method.

It should be noted that in order to produce nano-particles that permanently release anion energy, and to use them as sol-type photocatalyst raw materials, high-purity Tourmaline fine particles during chemical reaction are weak to acid during chemical reaction. The reaction time of each particle size to be processed should be checked and the tourmaline particles should be sol processed by a chemical reaction. When the desired particle size (50-100 nm) is completed by an acid chemical reaction, Neutralizer is added, and the completed sol ph is neutral or weakly alkaline, and then the type of sol compounded as a binder according to the existing TiO ₂ sol and the purpose of use and the field (SiO ₂ sol). , Alumina sol, etc.) and the compounding ratio (%) may be different.

TiO ₂ sol + SiO ₂ sol (or Al ₂ O ₃ sol) + Tourmaline sol = Anionogenic photocatalytic composite ceramic sol, or composition

The anion-generating photosemiconductor photocatalyst composite ceramic sol, or composition (powder) produced by the present invention is composed of conventional photocatalytic photocatalyst function based on TiO ₂ (titanium oxide), antibacterial function, deodorization function, hydrophilic function, In addition to surface protection and other functions, the tourmaline mineral gives the anion electron generation function and various retention functions added and strengthened to enhance contaminated indoor and outdoor air and water quality. Manufacturing method and composition of hydrophilic composite multifunctional anion generating photocatalyst composite sol combining [Tourmaline (Tourmaline) and TiO ₂ , which is an anion generating multifunctional photocatalyst product with various functions such as radiation function, imparting surfactant function and enhancing hydrophilic function Has devised.

Through the devising, we can improve the polluted environment, apply it to the manufacturing of products in each industry and field, and improve the air pollution environment, water pollution, food alteration, and living space environment. It aims to improve the health and life of human beings and especially contribute to Korea's trade surplus through export.

Claims (4)

1.Titanium isopropoxide (Ti [OCH (CH ₃ ) ₂ ] ₄ ) and Isopropyl alcohol ((CH ₃ ) ₂ CHOH), TiO ₂ sol, Tetraethyl orthosilicate Tetraethoxysilane (C ₈ H ₂₀ O ₄ Si) and Isopropyl alcohol ( Silver prepared from SiO ₂ sol (or Al ₂ O ₃ sol) made of (CH ₃ ) ₂ CHOH), and TiO ₂ sol, SiO ₂ sol (= Al ₂ O ₃ sol), tourmaline sol , Multi-functional anion-generating photocatalyst composite ceramics prepared by powder and aqueous solutions or compositions 2 . According to claim 1, the aqueous solution or composition prepared by the composite treatment in the proportion of TiO ₂ sol 34%, tourmaline sol 30%, SiO ₂ sol (= Al ₂ O ₃ sol) 35%, and Silver 1% ratio by weight Composite multifunctional anion generating photocatalyst composite ceramic 3. A composite multifunctional anion generating photocatalyst composite ceramic prepared by mixing and impregnating the aqueous solution or powder state with tourmaline powder, clay, illite, cerasite, oyster shell, etc. 4. The composite multifunctional anion-generating photocatalyst composite ceramic according to the above 1, 2, or 3, wherein the aqueous solution or powder is coated or added to an organic, inorganic, or metallic material.