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Preparation method of nanoporous microspheres with adsorption photocatalysis synergistic effect

A synergistic, nanoporous technology, applied in chemical instruments and methods, light water/sewage treatment, textile industry wastewater treatment, etc., can solve the problems of few research reports on protective substrates, damage to polymer flexible substrates, etc., and achieve improvement Treatment level, damage reduction, effect of high specific surface area

Inactive Publication Date: 2018-01-16
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, although some researchers have realized that the photocatalytic process damages polymer flexible substrates, which has become a shackle for its further promotion and application, there are few research reports on how to effectively protect the substrate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Add 10g of pyrrole monomer into 150mL water to obtain pyrrole aqueous solution, then add 1.5g of nano-photocatalyst titanium dioxide and 1.5g of silver nitrate, and form a uniform mixed solution after fully stirring; 20.20g of ferric nitrate nonahydrate and 0.97 1g of sodium bromide was added, after 2h of reaction, centrifuged and fully washed with distilled water, dried to obtain black powder I;

[0035] 2) Weigh again 10g of pyrrole monomer and add it into 150mL water to obtain pyrrole aqueous solution, then add 1.5g of the black powder obtained in step 1), and after stirring to form a uniform solution, add 20.20g of ferric nitrate nonahydrate, and react for 2 hours. Centrifuge and fully wash with distilled water, and dry the black powder with two layers of coating layer;

[0036] 3) Mix 15mL of absolute ethanol and 30mL of water, add 0.1g of the black powder obtained in step 2) to it, stir well, and mix evenly to obtain dispersion A;

[0037] Mix 15mL of absolute...

Embodiment 2

[0042] 1) Add 10g of pyrrole monomer into 150mL water to obtain pyrrole aqueous solution, then add 1.5g of nano-photocatalyst titanium dioxide and 1.5g of silver nitrate, and stir to form a uniform mixed solution; 13.5g of ferric chloride hexahydrate and Add 0.97g of sodium bromide, after 2 hours of reaction, centrifuge, wash fully with distilled water, and dry to obtain black powder I;

[0043] 2) Weigh again 10 g of pyrrole monomer and add it into 150 mL of water to obtain pyrrole aqueous solution, then add 1.5 g of the black powder obtained in step 1), and after stirring to form a homogeneous solution, add 13.5 g of ferric chloride hexahydrate, and react for 2 hours, Centrifuged and fully washed with distilled water, dried black powder with two coating layers;

[0044] 3) Repeat the above step 2) to obtain a black powder with three coating layers.

[0045] 4) Mix 15mL of absolute ethanol and 30mL of water, add 0.4g of the black powder obtained in step 3) to it, stir well, ...

Embodiment 3

[0051] 1) Add 10g of pyrrole monomer into 150mL water to obtain an aqueous solution of pyrrole, then add 1.5g of nano-photonic zinc oxide and 1.5g of silver nitrate, and fully stir to form a uniform mixed solution; 13.5g of ferric chloride hexahydrate and Add 0.97g of sodium bromide, after 2 hours of reaction, centrifuge, wash fully with distilled water, and dry to obtain black powder I;

[0052] 2) Weigh again 10 g of pyrrole monomer and add it into 150 mL of water to obtain pyrrole aqueous solution, then add 1.5 g of the black powder obtained in step 1), and after stirring to form a homogeneous solution, add 13.5 g of ferric chloride hexahydrate, and react for 2 hours, Centrifuged and fully washed with distilled water, dried black powder with two coating layers;

[0053] 3) Repeat the above step 2) 3 times to obtain a black powder with five coating layers.

[0054]4) Mix 15mL of absolute ethanol and 30mL of water, add 0.5g of the black powder obtained in step 3) to it, stir...

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Abstract

The invention discloses a preparation method of nanoporous microspheres with an adsorption photocatalysis synergistic effect. The preparation method comprises the following steps: 1) preparing a pyrrole aqueous solution I, adding a nano-photocatalyst and silver nitrate, then adding an oxidizing agent and sodium bromide, reacting, centrifuging, washing and drying to obtain black powder I; 2) addingthe black powder I to a pyrrole aqueous solution II with the oxidizing agent, reacting, centrifuging, washing and drying to obtain black powder II; 3) adding the black powder II into aqueous ethanolto obtain dispersion liquid A; and mixing absolute ethyl alcohol and tetraethyl orthosilicate, and adding a polymer pore-forming agent to obtain a solution B; 4) adding the dispersion liquid A to thesolution B, after completion, adjusting the pH value to be 2 to 3, continuing to stirring to form gel, drying, grinding, washing, drying, calcining and grinding to obtain a target product. Nanoporousmicrospheres prepared by the method has large specific surface area and strong photocatalysis, and can be widely used in the fields of dye wastewater treatment, hydrogen production by photolysis of water and indoor VOCs treatment.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional nanometer materials, in particular to a method for preparing nanoporous microspheres with synergistic effect of adsorption and photocatalysis. Background technique [0002] Due to its high catalytic efficiency, good stability, and no secondary pollution, nano-photocatalyst has become a new green pollution control technology that has received increasing attention in recent years, and has great application value in sewage treatment and air purification. Since Fujishima and Honda discovered that redox reactions can occur on the surface of titanium dioxide irradiated with light in 1972, the research on photocatalysts has received extensive attention. Among numerous nano photocatalysts, nano titanium dioxide (TiO 2 ) and nano-zinc oxide (ZnO) have been applied in self-cleaning, sewage purification, indoor VOCs removal, water splitting hydrogen production and energy storage due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C02F1/30C02F101/30C02F103/30
CPCA61L9/205B01J37/036B01J37/06B01J23/8906B01J35/23B01J35/51B01J35/615B01J35/39
Inventor 赵健李文静韩鹏遥权全肖长发
Owner TIANJIN POLYTECHNIC UNIV
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