Photocatalysis water-treating material as well as preparation method and application thereof

A technology of water treatment and photocatalysis, which is applied in the field of water treatment, can solve problems such as the lack of development of visible light catalysts, and achieve the effect of reducing costs

Active Publication Date: 2012-04-11
中关村科技租赁股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, visible light catalysts using iron as the main catalyst have not yet been developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of OH-Fe pillar liquid: add Fe(NO 3 ) 3 1mol / L Na was added dropwise to the solution 2 CO 3 Solution, continuous rapid stirring during the dropping process, to obtain a brown solution for subsequent use; Fe in the resulting solution 3+ and CO 3 2- The molar ratio of the substances is 2:1.

[0034] (2) Preparation of bentonite and cationic surfactant mixed solution: the bentonite raw soil that is dried and pulverized through a 100 mesh sieve is dropped into the cationic surfactant solution, and the total amount of the cationic surfactant in the cationic surfactant solution is bentonite cation exchange 70% of the amount, stirred in a 60° C. water bath for 2 hours, and the cationic surfactant used was dodecyltrimethylammonium bromide.

[0035] (3) Add the OH-Fe pillar liquid prepared in step (1) dropwise to the mixed solution prepared in step (2), and keep stirring for 2h; the mass volume of bentonite in the mixed liquid and the OH-Fe pillar liquid The...

Embodiment 2

[0040] (1) Preparation of OH-Fe pillar liquid: add Fe(NO 3 ) 3 Add 1.2mol / L of Na dropwise to the solution 2 CO 3 Solution, continuous rapid stirring in the dropping process, obtains brown solution for subsequent use; Wherein Fe 3+ and CO 3 2- The molar ratio of the substances is 2:1;

[0041] (2) Preparation of bentonite and cationic surfactant mixed solution: the bentonite raw soil that is dried and pulverized through a 100 mesh sieve is dropped into the cationic surfactant solution, and the total amount of the cationic surfactant in the cationic surfactant solution is bentonite cation exchange The amount of 20%, stirred in a 55 ° C water bath for 3 hours, and the cationic surfactant used was octaalkyltrimethylammonium bromide.

[0042] (3) Add the OH-Fe pillar liquid prepared in step (1) dropwise to the mixed solution prepared in step (2), and keep stirring for 3h; the mass volume of bentonite in the mixed liquid and the OH-Fe pillar liquid The ratio (g:mL) is 1:8; ...

Embodiment 3

[0047] (1) Preparation of OH-Fe pillar liquid: add Fe(NO 3 ) 3 Add 1.1mol / L of Na dropwise to the solution 2 CO 3 Solution, continuous rapid stirring in the dropping process, obtains brown solution for subsequent use; Wherein Fe 3+ and CO 3 2- The molar ratio of the substances is 2:1;

[0048] (2) Preparation of bentonite and cationic surfactant mixed solution: the bentonite raw soil that is dried and pulverized through a 100 mesh sieve is dropped into the cationic surfactant solution, and the total amount of the cationic surfactant in the cationic surfactant solution is bentonite cation exchange 60% of the amount, stirred in a 60°C water bath for 2 hours; the cationic surfactant is dodecyltrimethylammonium bromide.

[0049] (3) Add the OH-Fe pillar liquid prepared in step (1) dropwise to the mixed solution prepared in step (2), and keep stirring for 2h; the mass volume of bentonite in the mixed liquid and the OH-Fe pillar liquid The ratio (g:mL) is 1:7;

[0050] (4) A...

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Abstract

The invention discloses a photocatalysis water-treating material as well as a preparation method and an application thereof. The preparation method of the material comprises the following steps of: (1) preparing an OH-Fe pillar supporting liquid; (2) preparing the mixed liquid of bentonite and a cationic surfactant; (3) dropwise dropping the OH-Fe pillar supporting liquid prepared in the step (1) into the mixed liquid prepared in the step (2) and stirring; (4) after the stirring is completed, applying ultrasonic wave and microwave irradiation to the mixed liquid, and then aging at room temperature; and (5) then pouring a supernate, washing, drying the precipitates, and then grinding and calcining the dried precipitates. The prepared photocatalysis water-treating material can use the visible light (such as sunlight) to excite and assist the catalytic oxidation in the catalytic process and lower the cost.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a photocatalytic water treatment material and its preparation method and application, in particular to a photocatalytic material for treating organic waste water, its preparation method and its application. Background technique [0002] At present, with the rapid development of industrial technology, the water resources that human beings rely on for survival are polluted to varying degrees, and water resource pollution has become an urgent problem that countries all over the world are facing. Pollutants in water, especially toxic organic pollutants, not only cause environmental pollution and ecological damage, but also seriously endanger human health. These organic pollutants include polycyclic aromatic hydrocarbons, polychlorinated biphenyls, pesticides, environmental interferons, dyes, etc. [0003] Fenton's reagent generally refers to Fe 2+ and H 2 o 2 The oxidation system con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/30
CPCY02W10/37
Inventor 马建锋崔冰莹丁叶民周健
Owner 中关村科技租赁股份有限公司
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