A kind of ecological fiber and its preparation method and application

An ecological and fiber technology, applied in the fields of fiber chemical characteristics, chemical instruments and methods, rayon manufacturing, etc., can solve the problems of low photon quantum efficiency of photocatalysts, easy recombination of photogenerated electrons and holes, and inability to receive maximum light. Improve the photocatalytic effect, improve the mechanical properties, and the effect of fast electron transport rate

Active Publication Date: 2021-09-17
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Generally speaking, there are relatively few studies on improving the type of photocatalyst, changing the structure of aquatic plants, improving the photocatalytic ability and strengthening the ability of microorganisms to deal with pollutants.
[0006] And the existing artificial aquatic plants combined with photocatalysis also have the following problems: 1. The photon quantum efficiency of the photocatalyst is not high, and the photogenerated electrons-holes are easy to recombine, resulting in unstable photocatalytic effect; 2. The photocatalyst is difficult to load and easy to drop ; 3. The structure of aquatic plants is unreasonable and cannot receive maximum light, resulting in low photocatalytic efficiency

Method used

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  • A kind of ecological fiber and its preparation method and application
  • A kind of ecological fiber and its preparation method and application
  • A kind of ecological fiber and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] For the convenience of operation, a small ring is arranged at the bottom of the blade of grass, and several blades of grass are connected with the hollow ball through the small ring. Then arrange several aquatic plants in the river channel with a distance of 50-60 cm from each other and the top of the grass blades is 0.5 m from the water surface.

[0051] When laying out, the blades of grass should be spread as far as possible to ensure the largest area receiving light, and the blades of grass are not intertwined to block each other, so as to achieve a better treatment effect without affecting the normal function of the water area, and make full use of the fibers of the blades of grass to illuminate Catalysis coupled with microorganisms to remove pollutants.

[0052] According to the different waters, and considering the channel of the ship, the mutual interval between aquatic plants and the depth of water entry can be adjusted in real time.

Embodiment 2

[0054] In order to study the pollutant treatment effect of the aquatic plants, and to facilitate the research in the laboratory, the ratio of the aquatic plants was reduced by 1:10. Simulating the situation in a natural river, in a plexiglass water tank with a length, width and height of 1×0.4×0.6m, the water sample comes from the Qinhuai River in Nanjing, the water depth is 0.5m, and 10 series of aquatic plants are placed on both sides of the long side body, with halogen lamp as the light source, the illumination area is about 0.4m 2 , there are one upper and lower outlets on both sides of the wide side respectively, connected with a water pump to make the water circulate and flow, simulating the flowing water of a river.

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Abstract

The invention discloses an ecological fiber, comprising TiO with a mass percentage of 10-30% 2 , 20‑40% rGO, 30‑50% PANI. It is woven with PAN-type activated carbon fibers to form grass blades, and ecological aquatic plants composed of hollow floating balls. It has a special electricity-generating-conductive structure, and TiO 2 It is a photocatalyst, with rGO / PANI as the conductive base; and the hydrogel made of PANI also acts as a load carrier, and improves the mechanical properties and flexibility of the fiber material; it has high photon quantum efficiency and fast electron transmission rate. Reduce the recombination of photogenerated electrons and holes, the photocatalyst is not easy to fall, the photocatalytic material runs stably for a long time, and the catalytic efficiency is high; PAN activated carbon fibers can also absorb pollutants in water, and TiO 2 The interwoven structure of / rGO / PANI fibers can achieve a more concentrated treatment effect on pollutants in water bodies.

Description

technical field [0001] The invention relates to a fiber, in particular to an ecological fiber and its preparation method and application, and belongs to the technical field of water body ecological environment protection and ecological restoration. Background technique [0002] In natural water bodies, aquatic plants play a certain role in purifying the pollutants in the water body through their own life activities. However, the rivers and lakes in our country are constantly polluted, and the water quality deteriorates, which leads to the inability of aquatic organisms to survive normally, and the self-purification ability of the water body also decreases, forming a vicious circle. In order to deal with environmental problems such as eutrophication of rivers and lakes, heavy metal pollution, etc., which lead to the abnormal growth of aquatic plants and the decline in the self-purification ability of water bodies, artificial aquatic plants are placed in water bodies to reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34D01F6/94D01F1/10C08G73/02
CPCC02F3/34C02F2203/006C02F2305/10C08G73/0266D01F1/10D01F6/94
Inventor 李轶陆宇苗张文龙周心怡王玉明张弛
Owner HOHAI UNIV
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