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Composite photocatalyst film for algae removal and preparation method thereof

A composite photocatalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of secondary pollution of water bodies and unrecoverable treatment agents, etc., and achieve Effects of increased surface area, excellent electronic structure and electrical conductivity, and small diameter distribution

Active Publication Date: 2021-03-09
SHANGHAI SHANHENG ECOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As another example, the prior art CN108147478A discloses a sewage treatment agent for controlling cyanobacteria pollution and its preparation method and application, which uses chromium picoline, berberine, eucalyptol, L-carnitine tartrate, white tea Extract, clove powder, and amber powder are combined to prepare sewage treatment agent, which has fast purification speed and high treatment efficiency, but the above treatment agent cannot be recycled, and it is easy to cause secondary pollution of water after use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A composite photocatalyst film for algae removal is characterized in that it is prepared by the following steps:

[0051] Step 1. In parts by weight, weigh 60 parts of L-polylactic acid, 30 parts of graphene oxide, 5 parts of nano-silver, and 10 parts of multi-walled carbon nanotubes, dissolve the weighed L-polylactic acid in dichloromethane, and configure Then add the weighed graphene oxide, nano-silver, and multi-walled carbon nanotubes into solution A, ultrasonically disperse to form a mixture, and then drop the mixture on a quartz substrate to form a film, and place it in a closed container at 60°C Dry under vacuum for 24 hours to obtain a photocatalytic base film;

[0052] Step 2, taking by weighing molybdenum disulfide, silane coupling agent and mass percent is 2% guar gum aqueous solution, after mixing uniformly, form mixture C; Wherein molybdenum disulfide, silane coupling agent and mass percent are 2% guar gum The weight ratio of the glue solution is 5:2:4; th...

Embodiment 2

[0057] A composite photocatalyst film for algae removal is characterized in that it is prepared by the following steps:

[0058] Step 1. In parts by weight, weigh 70 parts of L-polylactic acid, 25 parts of graphene oxide, 5 parts of nano-silver, and 10 parts of multi-walled carbon nanotubes, dissolve the weighed L-polylactic acid in dichloromethane, and configure Then add the weighed graphene oxide, nano-silver, and multi-walled carbon nanotubes into solution A, ultrasonically disperse to form a mixture, and then drop the mixture on a quartz substrate to form a film, and place it in a closed container at 60°C Dry under vacuum for 24 hours to obtain a photocatalytic base film;

[0059] Step 2, taking by weighing molybdenum disulfide, silane coupling agent and mass percent is 1% guar gum aqueous solution, after mixing uniformly, forms mixture C; Wherein molybdenum disulfide, silane coupling agent and mass percent are 1% guar gum The weight ratio of the glue solution is 5:2:4; t...

Embodiment 3

[0064] A composite photocatalyst film for algae removal is characterized in that it is prepared by the following steps:

[0065] Step 1. In parts by weight, weigh 80 parts of L-polylactic acid, 20 parts of graphene oxide, 7 parts of nano-silver, and 8 parts of multi-walled carbon nanotubes, dissolve the weighed L-polylactic acid in dichloromethane, and configure Then add the weighed graphene oxide, nano-silver, and multi-walled carbon nanotubes into solution A, ultrasonically disperse to form a mixture, and then drop the mixture on a quartz substrate to form a film, and place it in a closed container at 60°C Dry under vacuum for 24 hours to obtain a photocatalytic base film;

[0066] Step 2, taking by weighing molybdenum disulfide, silane coupling agent and mass percent is 2% guar gum aqueous solution, after mixing uniformly, form mixture C; Wherein molybdenum disulfide, silane coupling agent and mass percent are 2% guar gum The weight ratio of the glue solution is 5:3:6; whi...

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Abstract

The invention discloses a composite photocatalyst film for algae removal and a preparation method of the composite photocatalyst film, and particularly, a base film with a porous structure is preparedby compounding poly-L-lactic acid, graphene oxide, nano-silver and multi-walled carbon nanotubes, and transition metal sulfide and single-walled carbon nanotubes are sprayed on the two sides of the base film respectively to form the composite photocatalyst film with a three-layer structure. The composite photocatalyst film prepared by the method is high in catalytic activity, does not generate secondary pollution in a water body, and also shows relatively good algae removal performance in a cyanobacteria water body treatment process.

Description

technical field [0001] The invention relates to the technical field of algae-rich sewage treatment, in particular to a composite photocatalyst film for algae removal and a preparation method thereof. Background technique [0002] At present, the problem of eutrophication of water resources is becoming more and more serious, which leads to frequent outbreaks of blue-green algae, and the scale of the outbreaks is getting larger and longer, and the cycle is getting longer and longer, seriously endangering people's living environment. If the algae-enriched sewage is salvaged and improperly disposed of, it will produce a large amount of odor and toxins, threatening human health and drinking water safety. [0003] In order to solve the problem of cyanobacteria blooms, mechanical fishing or manual fishing are used in the prior art, but the fishing method not only needs to consume a lot of manpower and material resources, resulting in high cost, but also this method cannot completel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J23/50B01J21/18B01J27/051B01J35/10B01J37/34B01J37/02C02F1/30
CPCB01J31/069B01J23/50B01J21/185B01J21/18B01J27/051B01J37/343B01J37/0219C02F1/30C02F2305/10B01J35/23B01J35/59B01J35/60B01J35/39
Inventor 黄海弟王艳云赵金涛
Owner SHANGHAI SHANHENG ECOLOGICAL TECH CO LTD
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