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Multilayer composite functional material as well as preparation method and application thereof

A functional material and multi-layer composite technology, applied in the field of environmental purification, can solve problems such as difficult application in relatively shading places, inability to use day and night, and insufficient lifespan, etc., and achieve the effects of reasonable substrate optimization, large surface area, and high production efficiency

Active Publication Date: 2020-12-04
无锡阿尔美环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems that traditional photocatalytic materials currently lack, such as insufficient efficiency, insufficient lifespan, non-pollution resistance, and high light requirements (cannot be used normally day and night, and is difficult to apply in relatively shading places), so as to be suitable for complex water purification such as water systems. actual engineering needs

Method used

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  • Multilayer composite functional material as well as preparation method and application thereof
  • Multilayer composite functional material as well as preparation method and application thereof
  • Multilayer composite functional material as well as preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] A multi-layer composite functional material, the functional material is a substrate layer, a solar reflection layer, a photocatalytic layer, a biocoupling purification layer and a self-cleaning protective layer from bottom to top;

[0042] The solar reflection layer is made of mica-modified silica sol;

[0043] The photocatalytic layer is made of photocatalytic nanogel of rare earth co-doped graphene;

[0044] The biocoupling purification layer contains trace element bioactivation factors;

[0045] The self-cleaning protective layer contains ethyl cellulose;

[0046] The preparation method of the functional material comprises the following steps:

[0047] (1) prepare mica modified silica sol;

[0048] Add 5 kg of mica crystals into 160 L of nano-silica ethanol dispersion (the mass concentration of nano-silica is 5%), then stir at high speed and disperse uniformly by ultrasonic to prepare mica-modified silica sol.

[0049] (2) Preparation of photocatalytic nanogels of ...

Embodiment 2

[0067] The difference from Example 1 is that the prepared rare earth element co-doped graphene photocatalytic nanogel is coated on the non-woven fabric substrate loaded with the previous slurry, and the coating times are 2 times.

Embodiment 3

[0069] The difference from Example 1 is that 0.4 g of graphene is added to the gel D, and the rare earth element co-doped graphene photocatalytic nanogel is obtained through ultrasonic treatment.

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Abstract

The invention discloses a multilayer composite functional material. The functional material sequentially comprises a base material layer, a sunlight reflection layer, a photocatalytic layer, a biological coupling purification layer and a self-cleaning protection layer from bottom to top; the sunlight reflection layer is prepared from mica modified silica sol; the photocatalytic layer is prepared from rare earth co-doped graphene photocatalytic nanogel; the biological coupling purification layer contains microelement biological activation factors; and the self-cleaning protection layer containsethyl cellulose. The invention solves the problems of low efficiency, short service life, no pollution resistance, high illumination requirement (a traditional photocatalytic material cannot be normally used day and night and is difficult to apply in relative shading places) and the like which are relatively lacked at present, so as to adapt to the actual engineering requirements of purificationof complex water bodies such as water systems and the like.

Description

technical field [0001] The invention relates to the field of environmental purification, in particular to a composite multi-layer structure photocatalytic coupled biological purification novel environmental functional material used for water quality or soil purification. Background technique [0002] Photocatalytic oxidation of nano-titanium dioxide is a new water pollution control technology. It can effectively treat organic matter in water and kill harmful microorganisms in water. Since this technology is characterized by the use of sunlight, the degradation speed is fast, the oxidation conditions are mild, and there is no secondary pollution. It has a wide range of applications and high chemical activity of titanium dioxide, which is safe. It is non-toxic and cheap, so it is also called a green and environmentally friendly water treatment technology. [0003] Photocatalytic degradation of environmental pollutants is still a technology that needs to be continuously improv...

Claims

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Application Information

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IPC IPC(8): C02F3/34B09C1/10B09C1/08B09C1/00C02F1/28C02F1/30
CPCC02F3/34B09C1/10B09C1/08B09C1/00C02F1/30C02F1/288C02F2305/10C02F2305/06
Inventor 谭成钢
Owner 无锡阿尔美环保科技有限公司