CN104151868B - Modified nano-titanium dioxide that a kind of photocatalysis effect strengthens and preparation method thereof - Google Patents

Abstract

The invention discloses a modified nano titanium dioxide with enhanced photocatalytic effect, which is characterized in that it is prepared from the following raw materials in parts by weight: nano titanium dioxide 85-90, nano zirconium dioxide 2-3, tetrabutylammonium hydroxide 1- 1.5, tin oxide 2-2.5, lead titanate 2-3, cerium oxide 1.5-2.5, sodium bicarbonate 1-2, alkyd resin 5-7, nano carbon 2-4, modified silicon dioxide 2-3; In the present invention, by adding tin oxide, the heat conduction is fast, so that the photocatalytic reaction can be carried out quickly, the addition of cerium oxide can purify the air, and the addition of foaming and porous materials, so that the present invention has good adsorption effect, and by blending with nano-titanium dioxide, the expansion The wavelength range of the reaction is greatly improved, and the photocatalytic purification efficiency of titanium dioxide is greatly improved. It has good market prospects and economic value, and is suitable for use in coatings and inks.

Description

A kind of modified nano-titanium dioxide with enhanced photocatalytic effect and preparation method thereof

technical field

The invention relates to the field of industrial fillers, in particular to a modified nano titanium dioxide with enhanced photocatalytic effect and a preparation method thereof.

Background technique

Due to its good UV resistance, good weather resistance, chemical resistance, heat resistance, photocatalysis, thermal stability, and harmless to human body, nano titanium dioxide is widely used in pigments such as paint, rubber, plastic , papermaking and other industries, and is also widely used as photocatalyst, photoelectric cell, ultraviolet shielding agent, etc.; nano-titanium dioxide has a very wide application prospect in air purification treatment due to its unique photocatalytic properties. However, TiO2 has a wide band gap (3.2eV), and can only respond to ultraviolet light with a wavelength of less than 400nm, which greatly affects the utilization efficiency of light energy. In addition, the photogenerated electrons and photogenerated holes are easy to recombine, and the light intensity and efficiency are low, which seriously restricts the TiO2 light. Practical application efficiency of catalytic effect. Therefore, it is necessary to develop a method for producing high-quality modified nano-titanium dioxide.

Contents of the invention

The purpose of the present invention is to provide a modified nano-titanium dioxide with enhanced photocatalytic effect and a preparation method thereof.

In order to realize the purpose of the present invention, the present invention is implemented through the following schemes:

A modified nano-titanium dioxide with enhanced photocatalytic effect, prepared from the following raw materials in parts by weight: 85-90 nano-titanium dioxide, 2-3 nano-zirconia, 1-1.5 tetrabutylammonium hydroxide, 2-2.5 tin oxide, Lead titanate 2-3, cerium oxide 1.5-2.5, sodium bicarbonate 1-2, alkyd resin 5-7, nano carbon 2-4, modified silica 2-3;

The modified silicon dioxide is made of the following raw materials in parts by weight: silicon dioxide 55-60, nano jade powder 4-6, white corundum powder 5-7, silane coupling agent kh5601-2, nano barium sulfate 1- 2. Acrylic acid-2-hydroxyethyl ester 3-4, dimethyl fumarate 3-5, cobalt naphthenate 2-4, water 50-60; the preparation method is to add nano silicon dioxide, nano jade powder, Silane coupling agent kh560, nano-barium sulfate, and water are stirred evenly, then white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate are added, heated to 130-150°C, mixed and stirred for 25-35 minutes, cooled to room temperature, then add the remaining ingredients, stir at 1200-1500 rpm for 1-2 hours, dry at 60-70°C, and grind to obtain the product.

A modified nano-titanium dioxide with enhanced photocatalytic effect according to the present invention is made by the following specific steps:

(1) Mix nano-titanium dioxide, nano-zirconia, tetrabutylammonium hydroxide, tin oxide, lead titanate, and cerium oxide evenly into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, crush and grind Fine, mixed powder for later use;

(2) Put the alkyd resin into the mixing tank, heat up to 80-90°C, add nano-carbon, keep warm and stir for half an hour, and cool to get rubber powder;

(3) Mix the mixed powder and rubber powder evenly, add sodium bicarbonate, nano-carbon, appropriate amount of water, stir evenly, ultrasonically oscillate at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension use;

(4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.

The beneficial effects of the present invention are: the present invention has fast heat conduction through the addition of tin oxide, so that the photocatalytic reaction can be carried out rapidly, the addition of cerium oxide can purify the air, and the addition of foaming and porous materials makes the present invention have good adsorption. The blending of nano-titanium dioxide expands the wavelength range of the reaction, greatly improves the photocatalytic purification efficiency of titanium dioxide, has good market prospects and economic value, and is suitable for use in coatings and inks.

specific implementation plan

The present invention will be described in detail below through specific examples.

A modified nano-titanium dioxide with enhanced photocatalytic effect, prepared from the following raw materials in parts by weight (kg): nano-titanium dioxide 85, nano-zirconium dioxide 2, tetrabutylammonium hydroxide 1, tin oxide 2, lead titanate 2, Cerium oxide 1.5, sodium bicarbonate 1, alkyd resin 5, nano carbon 2, modified silica 2;

The modified silicon dioxide is made of the following raw materials in parts by weight (kg): silicon dioxide 55, nano jade powder 6, white corundum powder 5, silane coupling agent kh5601, nano barium sulfate 2, acrylic acid-2-hydroxy Ethyl fat 3, dimethyl fumarate 3, cobalt naphthenate 2, water 50; the preparation method is to first add nano silicon dioxide, nano jade powder, silane coupling agent kh560, nano barium sulfate, water and stir evenly, then Add white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate, heat to 130-150°C, mix and stir for 25-35 minutes, cool to room temperature, then add the remaining ingredients, 1200-1500 rpm Stir for 1-2 hours under the same conditions, dry at 60-70°C, and grind to obtain the product. A modified nano-titanium dioxide with enhanced photocatalytic effect according to the present invention is made by the following specific steps:

(1) Mix nano-titanium dioxide, nano-zirconia, tetrabutylammonium hydroxide, tin oxide, lead titanate, and cerium oxide evenly into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, crush and grind Fine, mixed powder for later use;

(2) Put the alkyd resin into the mixing tank, heat up to 80-90°C, add nano-carbon, keep warm and stir for half an hour, and cool to get rubber powder;

(3) Mix the mixed powder and rubber powder evenly, add sodium bicarbonate, nano-carbon, appropriate amount of water, stir evenly, ultrasonically oscillate at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension use;

(4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.

According to the ratio of this embodiment, the unmodified and modified nano-titanium dioxide is added to the coating to make the coating, and the coating force test is carried out. The results are as follows:

Claims (2)

1. A modified nano-titanium dioxide whose photocatalytic effect is enhanced is characterized in that it is prepared from the raw materials of the following parts by weight: nano-titanium dioxide 85-90, nano-zirconia 2-3, tetrabutylammonium hydroxide 1-1.5, Tin oxide 2-2.5, lead titanate 2-3, cerium oxide 1.5-2.5, sodium bicarbonate 1-2, alkyd resin 5-7, nano carbon 2-4, modified silicon dioxide 2-3; Modified silica is made of the following raw materials in parts by weight: silica 55-60, nano jade powder 4-6, white corundum powder 5-7, silane coupling agent kh560 1-2, nano barium sulfate 1-2 , 2-hydroxyethyl acrylate 3-4, dimethyl fumarate 3-5, cobalt naphthenate 2-4, water 50-60; the preparation method of the modified silicon dioxide is: first add two Silicon oxide, nano jade powder, silane coupling agent kh560, nano barium sulfate, and water are stirred evenly, then white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate are added, heated to 130-150°C, and mixed Stir for 25-35 minutes, cool to room temperature, then add the remaining ingredients, stir at 1200-1500 rpm for 1-2 hours, dry at 60-70°C, and grind to obtain. 2. according to claim 1, the modified nano-titanium dioxide that a kind of photocatalytic effect strengthens is characterized in that, is made by following specific steps: (1) Mix nano-titanium dioxide, nano-zirconia, tetrabutylammonium hydroxide, tin oxide, lead titanate, and cerium oxide into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, crush and grind Fine, mixed powder for later use; (2) Put the alkyd resin into the mixing tank, heat up to 80-90°C, add nano-carbon, keep warm and stir for half an hour, and cool to get rubber powder; (3) Mix the mixed powder and rubber powder evenly, add sodium bicarbonate and appropriate amount of water, stir evenly, oscillate ultrasonically at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension for use; (4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.