Method for producing tripolite loading nano-TIO2 material capable of being used for water and air purification

An air purification and diatomite technology, which is applied in the field of preparation of diatomite-supported nano-TiO2 materials, can solve the problems of high production cost, influence on photocatalyst, influence on the effect of photocatalyst, etc., and achieves low production cost, environmental friendliness, good quality The effect of photocatalysis

Inactive Publication Date: 2008-06-11
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the one hand, zeolite molecular sieves, activated carbon, etc. are used as carrier materials, and the production cost is high, and the pore size of these carriers is too small (less than 1nm), and the pores after loading photocatalyst components (such as nano-titanium dioxide) are mostly covered, and the light transmittance is relatively low. poor, affecting the performance of the photo

Method used

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  • Method for producing tripolite loading nano-TIO2 material capable of being used for water and air purification
  • Method for producing tripolite loading nano-TIO2 material capable of being used for water and air purification
  • Method for producing tripolite loading nano-TIO2 material capable of being used for water and air purification

Examples

Experimental program
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Effect test

Embodiment 1

[0032]Take 1000g of diatomite ore, add 1500mL of water, 5g of sodium hydroxide, and 3g of sodium pyrophosphate, stir and disperse with a laboratory mixer for 20 minutes, then add 1500mL of water, use a 50-mesh sieve to separate impurities such as grass roots and bark; sieve the pulp in a plastic basin After medium gravity sedimentation for 4 minutes, suck it out with a siphon and separate the sucked ore pulp with a sedimentation centrifuge for 6 minutes; then take out the centrifuged precipitate product, put it into a three-necked flask, add 1200L of 65% sulfuric acid solution, stir at 95°C for 4 hours, and then filter. Washing; the filter cake was dried at 105°C and baked in a muffle furnace at 450°C for 2h.

[0033] Take 100g of the dried selected diatomite, add 3000mL of water, adjust the pH to 2 with hydrochloric acid, stir and disperse, add 200mL of the prepared titanium tetrachloride solution with a concentration of 2.9mol / L, and then evenly add the concentration of 1.49m...

Embodiment 2

[0035] Take 1000g of diatomite ore, add 1500mL of water, 6g of sodium hydroxide, and 4g of sodium pyrophosphate, stir and scrub with a laboratory scrubber for 30 minutes, then add 2000mL of water, and use a 50-mesh sieve to separate impurities such as grass roots and bark; After gravity settling in the basin for 5 minutes, suck it out with a siphon and separate the sucked ore pulp with a sedimentation centrifuge for 7 minutes; then take out the centrifuged precipitate product, put it into a three-necked flask, add 1100L of 72% sulfuric acid solution, stir at 100°C for 3 hours, and then filter 1. Washing; the filter cake was dried at 105° C. and baked at 400° C. for 2.5 hours in a muffle furnace.

[0036] Take 500g of dried selected diatomite, add 15000mL of water, adjust the pH to 2 with hydrochloric acid, stir and disperse, add 1000mL of titanium tetrachloride solution with a concentration of 2.9mol / L, and then evenly add the concentration of 1.49mol / L 2300ml of ammonium sulf...

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Abstract

The invention relates to a process for preparing diatom earth loading nanometer Ti2O material for purifying water and air, which belongs to the field of material process and environmental treatment. Diatom earth raw ore is filled with water and is churned and scattered, is screened, is sunken by gravity, and is eccentrically sunken, sulfuric acid is adopted to dissolve clay-type foreign matters which are left in pore passages after ores which mutually grow with diatom earth like quartz, feldspar, mica, and clay and the like and organic matters which are mixed such as grass roots and barks and the like are removed, and diatom fine soil is attained. Further, diatom fine soil is filtered, dried, and baked, and diatom fine soil after baked is filled with water, and is churned, and is filled with acid to regulate the PH value, and is filled TiCl4 solution, and is filled with ammonia sulfate solution to proceed hydrolytic decomposition deposition reaction, and product yield after the reaction is filtered, washed, dried, and baked to attain the nanometer Ti2O material.

Description

1. Technical field [0001] The invention relates to a diatomite-loaded nano-TiO that can be used for water and air purification 2 The invention relates to a material preparation method, which belongs to the field of mineral material processing and environmental treatment. 2. Background technology [0002] Water pollution and air pollution pose a major threat to human living environment and health. Water pollution and air pollution control are directly related to human reproduction and sustainable economic development. At present, there are many methods for water and air pollution control, such as adsorption method, chemical method, physical chemical method, biochemical method, photocatalytic method and so on. Many materials, such as activated carbon, zeolite, molecular sieve, diatomaceous earth, bentonite, etc., have been processed to selectively adsorb various organic and inorganic pollutants, and are widely used in water pollution and air pollution control. However, stud...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J21/08
Inventor 郑水林王利剑舒锋王光玉姜中强
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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