Preparation method of self-cleaning fibers

A self-cleaning, fiber-based technology, applied in chemical instruments and methods, special compound water treatment, water/sludge/sewage treatment, etc., to achieve the effect of avoiding the separation process and high strength

Active Publication Date: 2019-02-26
嘉兴如运建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in order to adapt to the special requirements of various actual sewage treatment processes, there are often certain restrictions on the shape and characteristics of photocatalytic materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing self-cleaning fibers mainly includes the following steps.

[0018] Step 1: Synthesize active precursor solution.

[0019] (1) Add 12g sodium metavanadate and 2g disodium edetate to 300mL deionized water, stir to dissolve, then add 1mol / L hydrochloric acid solution dropwise until the pH value of the solution is 5 to form solution A.

[0020] (2) Add 6 g of bismuth nitrate pentahydrate, 3 g of neodymium nitrate and 2.5 g of sodium bicarbonate into 200 mL of deionized water, stir and dissolve to form solution B.

[0021] (3) Mix solution A and solution B and stir evenly to prepare an active precursor solution.

[0022] Step 2: Fiber Lamination.

[0023] (1) Move the active precursor solution into a stainless steel hydrothermal reaction kettle, immerse 2g of aluminum silicate fiber in the solution, seal the reaction kettle, react at 200°C for 50h, cool down, and take out the fiber.

[0024] (2) Rinse the fibrous material with deionized water, dry a...

Embodiment 2

[0031] A method for preparing self-cleaning fibers mainly includes the following steps.

[0032] Step 1: Synthesize active precursor solution.

[0033] (1) Add 13g sodium metavanadate and 2.5g disodium edetate to 300mL deionized water, stir to dissolve, then add 1mol / L hydrochloric acid solution dropwise until the pH value of the solution is 5 to form solution A.

[0034] (2) Add 7 g of bismuth nitrate pentahydrate, 4 g of neodymium nitrate and 2.7 g of sodium bicarbonate into 200 mL of deionized water, stir and dissolve to form solution B.

[0035] (3) Mix solution A and solution B and stir evenly to prepare an active precursor solution.

[0036] Step 2: Fiber Lamination.

[0037] (1) Move the active precursor solution into a stainless steel hydrothermal reaction kettle, immerse 2g of aluminum silicate fiber in the solution, seal the reaction kettle, react at 210°C for 50h, cool down, and take out the fiber.

[0038] (2) Rinse the fibrous material with deionized water, dry...

Embodiment 3

[0041] A method for preparing self-cleaning fibers mainly includes the following steps.

[0042] Step 1: Synthesize active precursor solution.

[0043] (1) Add 15g sodium metavanadate and 3g disodium edetate to 300mL deionized water, stir to dissolve, then add 1mol / L hydrochloric acid solution dropwise until the pH value of the solution is 5 to form solution A.

[0044] (2) Add 8 g of bismuth nitrate pentahydrate, 6 g of neodymium nitrate and 3 g of sodium bicarbonate into 200 mL of deionized water, stir and dissolve to form solution B.

[0045] (3) Mix solution A and solution B and stir evenly to prepare an active precursor solution.

[0046] Step 2: Fiber Lamination.

[0047] (1) Move the active precursor solution into a stainless steel hydrothermal reaction kettle, immerse 2g of aluminum silicate fiber in the solution, seal the reaction kettle, react at 220°C for 50h, cool down, and take out the fiber.

[0048] (2) Rinse the fibrous material with deionized water, dry at ...

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Abstract

The invention provides a preparation method of self-cleaning fibers, and belongs to the field of water purification materials. The preparation method of the self-cleaning fibers comprises the following process steps: mixing deionized water, sodium metavanadate and ethylenediamine tetraacetic acid disodium, regulating pH of a solution with hydrochloric acid, and then adding a mixed solution of deionized water, bismuth nitrate pentahydrate, neodymium nitrate and sodium bicarbonate to prepare an active precursor solution; carrying out hydrothermal reaction on the active precursor solution and aluminium silicate fibers, and drying and calcining to obtain the self-cleaning fibers. The self-cleaning fibers consist of aluminium silicate fibers of which the surfaces are coated with bismuth neodymium vanadate, resist high temperature, are flexible, are high in strength, can float in water, and can degrade organic pollutants in water under the condition of illumination.

Description

technical field [0001] The invention belongs to the field of water purification materials, and in particular relates to a preparation method of self-cleaning fibers. Background technique [0002] The intensification of water pollution has made people aware of the great harm of environmental pollution. Industrial and civil sewage contains a variety of organic pollutants, many of which have obvious toxicity and the effect of enriching in living bodies. Conventional water pollution treatment technologies are mainly biochemical methods, which purify organic matter in water through the action of microorganisms. However, the microorganisms used in the biochemical method are easily inhibited by toxic and harmful organic pollutants, and are not suitable for the purification of high-concentration and toxic sewage. To deal with this kind of pollution, deep oxidation is usually used to oxidize organic matter into carbon dioxide and water through oxidation. Photocatalytic purification...

Claims

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Application Information

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IPC IPC(8): B01J23/22C02F1/30
CPCC02F1/30B01J23/002B01J23/22C02F2305/10B01J2523/00B01J35/59B01J35/39B01J2523/3725B01J2523/41B01J2523/55B01J2523/31B01J2523/54
Inventor 张文杰
Owner 嘉兴如运建筑科技有限公司
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