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Attapulgite photocatalyst and preparation method thereof

A technology of attapulgite and photocatalyst, which is applied in the field of environmental treatment, can solve the problems of high price, affect the effect of photocatalyst, affect the application and promotion of photocatalyst, and achieve good photocatalytic effect

Pending Publication Date: 2021-01-26
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, photocatalytic materials are easily affected by problems such as coating, erosion and shedding, and the current nano-scale TiO2 photocatalytic materials are expensive, which seriously affects the application and promotion of photocatalysts.

Method used

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  • Attapulgite photocatalyst and preparation method thereof
  • Attapulgite photocatalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of attapulgite photocatalyst of the present embodiment and preparation method thereof are as follows:

[0025] Step 1: Weigh 80g of attapulgite clay with a fineness of 400 meshes and put it into 1000ml distilled water and stir for 4 hours, and use 80ml of hydrochloric acid with a concentration of 1mol / L to treat it at 100°C for 2 hours; add 10ml of Stearic acid and sorbitan fatty acid esters are formulated as a composite active agent in a ratio of 1:1, and then NaOH solution is added dropwise to adjust the pH value to 8, then stirred with a cross blade stirrer at 600 rpm for 4 hours, and left to stand for 10 After 1 hour, the attapulgite suspension was separated;

[0026] Step 2: Add 5ml polyoxyethylene oleyl ether, 10g sodium hexametaphosphate and 2ml sorbitan fatty acid ester to the attapulgite suspension prepared in step 1), and then add the During the milling process, ball mill at 200 rpm for 4 hours to obtain attapulgite suspension after ball milling; polyo...

Embodiment 2

[0032] A kind of attapulgite photocatalyst of the present embodiment and preparation method thereof are as follows:

[0033] Step 1: Weigh 100g of attapulgite clay with a fineness of 300 mesh and put it into 900ml of distilled water and stir for 3 hours, and use 100ml of hydrochloric acid with a concentration of 1mol / L to treat it at 80°C for 3 hours; Stearic acid and sorbitan fatty acid ester are formulated as a composite active agent at a ratio of 1:1.5, then NaOH solution is added dropwise to adjust the pH value to 7, then stirred with a cross blade stirrer at 500 rpm for 2 hours, and left to stand for 10 After 1 hour, the attapulgite suspension was separated;

[0034] Step 2: Add 6ml of polyoxyethylene oleyl ether, 8g of sodium hexametaphosphate and 4ml of sorbitan fatty acid ester to the attapulgite suspension prepared in step 1), and then add zirconia grinding balls on the planetary During the milling process, ball mill at 300 rpm for 3 hours to obtain attapulgite suspe...

Embodiment 3

[0040] A kind of attapulgite photocatalyst of the present embodiment and preparation method thereof are as follows:

[0041] Step 1: Weigh 90g of attapulgite clay with a fineness of 200 mesh and put it in 800ml of distilled water and stir for 2 hours, then process it with 50ml of hydrochloric acid with a concentration of 1mol / L at 90°C for 1 hour; add 5ml to the treated suspension by Stearic acid and sorbitan fatty acid ester are formulated as a composite active agent at 1:1.3, then NaOH solution is added dropwise to adjust the pH value to 6, and then stirred with a cross blade stirrer at 550 rpm for 3 hours and left to stand for 10 After 1 hour, the attapulgite suspension was separated;

[0042] Step 2: Add 8ml polyoxyethylene oleyl ether, 5g sodium hexametaphosphate and 5ml sorbitan fatty acid ester to the attapulgite suspension obtained in step 1), and then add the During the milling process, ball mill at 250 rpm for 3.5 hours to obtain attapulgite suspension after ball mi...

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Abstract

The invention provides an attapulgite photocatalyst and a preparation method. The surface of attapulgite clay powder is coated with a layer of composite active agent formed by mixing an organic compound and a nonionic surfactant, so that the polymerization reaction between the attapulgite clay powder can be inhibited, and the compatibility and dispersity of the attapulgite clay powder in an aqueous solution can be improved; high-dispersity attapulgite clay suspension liquid is obtained through a dispersing agent and sodium hexametaphosphate, then the attapulgite clay suspension liquid is adsorbed to the surface of attapulgite powder through the high activity of nanometer TiO2 sol, nanometer titanium oxide powder and micron carbon nitride which are excellent in photocatalytic performance are obtained through drying, and uniform and stable loading is conducted on the surface of attapulgite rod-like crystals. The attapulgite photocatalyst with excellent performance is prepared, and photocatalysis application and development are promoted. The attapulgite photocatalyst provided by the invention can be filled in a photocatalytic coating or an environmental treatment liquid, has sound photocatalysis, can degrade pollutants, and achieves the purpose of self-cleaning.

Description

Technical field: [0001] The invention belongs to the field of environmental treatment, in particular to an attapulgite photocatalyst and a preparation method thereof. Background technique: [0002] The surface of cement, concrete, paving bricks, tiles, glass, leather, wooden furniture and other materials is exposed to the air for a long time, and the surface is easily polluted by tiny particles in the air. Therefore, the surface of these materials is coated with titanium dioxide (TiO2) as a representative Environmentally stable self-cleaning materials have become a trend. It has been verified that this composite material can play a significant role in purifying the air and improving air quality. Photocatalytic cement paving bricks are provided with a surface layer of photocatalytic material, while the brick body maintains the traditional concrete properties. The coating with high-efficiency photocatalytic performance can degrade inorganic and organic pollutants in the atmos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J21/06B01J21/16B01J37/02C09D7/62C09D7/61
CPCB01J27/24B01J21/063B01J21/16B01J37/0036B01J37/0215B01J37/0072C09D7/62C09D7/61B01J35/23B01J35/39
Inventor 姚义俊王卫刘斌董雅凤张宇豪
Owner NANJING UNIV OF INFORMATION SCI & TECH