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Preparation method of TiO2 / MnS / Ga2O3 composite photocatalyst colloid

A technology of catalytic glue and composite light, which is applied in the field of photocatalytic materials, can solve the problem of low catalytic oxidation ability of photocatalyst sunlight utilization rate, and achieve the effect of improving catalytic oxidation ability and strong redox ability

Active Publication Date: 2016-10-12
浙江和谐光催化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the sunlight utilization rate and catalytic oxidation ability of the above-mentioned existing photocatalysts are not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, measure 100ml of deionized water and pour it into a beaker, then measure 2ml of concentrated nitric acid and pour it into the water carefully and slowly along the wall of the vessel, stir and heat to 45°C. In a fume hood, quickly add 18ml of titanium isopropoxide into 15ml of absolute ethanol and stir evenly, slowly drop the ethanol solution of titanium isopropoxide into the above nitric acid solution under strong stirring. Continue to stir vigorously for 6 hours after adding titanium isopropoxide, the obtained light blue transparent TiO 2 Colloid spare.

[0022] Second, dissolve 2.2g of gallium nitrate (purity 99%) in 100ml, 7w% nitric acid aqueous solution, stir evenly and heat to 45°C, slowly drop ammonia water (containing 28% ammonia) in a fume hood under strong stirring, Continue to stir for 24 hours after dripping the ammonia water to obtain light yellow transparent Ga 2 o 3 Colloid spare.

[0023] Third, dissolve 13g of manganese acetate in 100mL of de...

Embodiment 2

[0030] Take a 30cm×30cm silver-white aluminum-plastic plate, and divide its surface into two equal parts with a blade (each part is 450cm 2 ). Utilize the TiO that embodiment 1 prepares 2 / MnS / Ga 2 o 3 Composite spraying agent 5ml, spray on one part of the above-mentioned aluminum-plastic panel three times, and cover the other part as a blank contrast surface. After each spraying, dry the aluminum-plastic panel at 120°C for 0.5hr, and finally take it out and let it cool to room temperature naturally. Use commercially available pink (mainly methyl red) watercolor strokes to draw no less than three pink handwritings on its surface, and each handwriting spans two parts (the part coated with compound glue and the blank part). Use an 8w, 365nm ultraviolet lamp to irradiate all handwriting, and the ultraviolet lamp is 2cm away from the surface of the aluminum-plastic panel. After 5 minutes, the pink handwriting on the surface of the aluminum-plastic panel coated with the compos...

Embodiment 3

[0032] Take an 80cm×80cm gray-white granite exterior wall panel, and divide its surface into two equal parts with a carbon marker (each part is 800cm 2 ). Utilize the TiO that embodiment 1 prepares 2 / MnS / Ga 2 o 3 8ml of composite spraying agent is sprayed on a part of the above-mentioned granite exterior wall board, and the other part is covered as a blank contrast surface. After spraying, dry in the sun for more than 4 hours. Use a contact angle meter to measure the change of the contact angle of the granite exterior wall panel before and after being irradiated by an ultraviolet lamp (power 4W, main wavelength 365nm) (the distance between the lamp tube and the granite exterior wall panel is 2cm). The main parameters of the contact angle measurement are as follows: the medium is water, the droplet size is 0.5μl, five measuring points are randomly selected, and the average value of the five points is finally calculated. The result: coated with TiO 2 / MnS / Ga 2 o 3 The a...

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PUM

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Abstract

The invention discloses a preparation method of a TiO2 / MnS / Ga2O3 composite photocatalyst colloid. The method comprises the following steps: 1) synthesis of s TiO2 sol; 2) synthesis of a Ga2O3 sol; 3) synthesis of MnS4; and 4) synthesis of the TiO2 flocculent / MnS / Ga2O3 composite photocatalytic colloid; and mixing of the TiO2 sol and Ga2O3 sol obtained in the step 1) and step 2). The solid TiO2 TiO2 / MnS / Ga2O3 composite photocatalyst colloid after drying contains 90.0-97.0wt% of TiO2, 2.9-8.0wt% of MnS, and 0.1-2.0wt% of Ga2O3. The composite photocatalyst colloid has high solar light utilization rate and catalytic oxidation ability.

Description

[0001] technical field [0002] The invention belongs to the technical field of photocatalytic materials, in particular to a TiO 2 / MnS / Ga 2 o 3 Preparation method of composite photocatalytic colloid. Background technique [0003] With the improvement of living standards, people pay more and more attention to environmental issues, but often the means of environmental governance or drugs themselves bring new pollution, such as chemical sterilizers or detergents. In recent years, an environmental treatment and protection technology using the principle of photocatalysis has gradually become popular. Its biggest advantage is that it does not produce secondary pollution, and directly decomposes gas-phase or liquid-phase organic pollutants into environmentally harmless inorganic minerals to achieve self-cleaning. , Air purification and antibacterial purposes. where TiO 2 Due to their excellent physical and chemical properties, photocatalysts have been used in the preparation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04
CPCB01J27/04B01J35/39B01J35/23
Inventor 陈纳新单兴刚
Owner 浙江和谐光催化科技有限公司
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