Charge-transfer type automatic redox nanomaterials, preparation methods and applications thereof, and marine antifouling agents and marine antifouling coatings

A nanomaterial, auto-oxidation technology, applied in antifouling/underwater coatings, epoxy coatings, coatings, etc., can solve the biological inhibition effect of marine fouling microorganisms, algae and large marine fouling, can not fully meet the High anti-fouling requirements, marine biological safety needs to be improved, etc., to achieve significant anti-fouling effect, significantly inhibit adhesion activity, and outstanding anti-fouling performance

Active Publication Date: 2021-01-19
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although some nanomaterials have been used in antifouling agents, there is still a short antifouling period, which cannot significantly inhibit marine fouling microorganisms, algae and large marine fouling organisms, and cannot fully meet the high antifouling requirements. Requirements, in addition, the safety of marine life needs to be improved

Method used

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  • Charge-transfer type automatic redox nanomaterials, preparation methods and applications thereof, and marine antifouling agents and marine antifouling coatings
  • Charge-transfer type automatic redox nanomaterials, preparation methods and applications thereof, and marine antifouling agents and marine antifouling coatings

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preparation example Construction

[0091] In a preferred embodiment, the preparation method of the above-mentioned charge-transfer type automatic redox nanomaterial comprises the following steps:

[0092] The composite nanometer material is immersed in a solution containing rare earth elements, dried and calcined after the impregnation to obtain a charge transfer type automatic redox nanometer material.

[0093] Drying and calcination can be carried out in a conventional manner, for example, an oven is used for drying, and a muffle furnace is used for calcination.

[0094]The preparation method of the rare earth-doped CT nanometer material adopts the impregnation combustion method, the process is simple, the operability is strong, the cost is low, the product purity is high, the particle size is small, the rare earth element is uniformly doped, and the activity is high.

[0095] In a preferred embodiment, ultrasonic impregnation is used for impregnation.

[0096] Ultrasonic impregnation can make rare earth ele...

Embodiment 1

[0115] A kind of CT nano material, is made of MnO, TiO doped with rare earth elements La and Ce 2 , ZnO and SiO 2 Composed of composite nanomaterials, the molar ratio of the main component is MnO:TiO 2 :ZnO:SiO 2 =2:15:1:12, the co-doping amount of the rare earth elements La and Ce is 1 wt%, and the molar ratio of La:Ce=1:3.

[0116] A certain amount of La(NO 3 ) 3 ·6H 2 O and Ce(NO 3 ) 3 ·6H 2 O is dissolved (the mass of the salt is calculated according to the doping amount), and the La(NO 3 ) 3 ·6H 2 O, Ce(NO 3 ) 3 ·6H 2 Mixed aqueous solution of O impregnated MnO, TiO 2 , ZnO and SiO 2 In the composite nanomaterials, after ultrasonic impregnation for 1 h, dry at 100 °C, place in a muffle furnace, and bake at 600 °C for 8 h to obtain CT nanomaterials.

Embodiment 2

[0118] A kind of CT nano material, is made of MnO, TiO doped with rare earth elements La and Ce 2 , ZnO and SiO 2 Composed of composite nanomaterials, the molar ratio of the main component is MnO:TiO 2 :ZnO:SiO 2 =2:5:1:5, the co-doping amount of rare earth elements La and Ce is 0.1wt%, and the molar ratio of La:Ce=1:2.

[0119] A certain amount of La(NO 3 ) 3 ·6H 2 O and Ce(NO 3 ) 3 ·6H 2 O is dissolved (the mass of the salt is calculated according to the doping amount), and the La(NO 3 ) 3 ·6H 2 O, Ce(NO 3 ) 3 ·6H 2 Mixed aqueous solution of O impregnated MnO, TiO 2 , ZnO and SiO 2 In composite nanomaterials, after ultrasonic impregnation for 1.5h, dry at 80°C, place in a muffle furnace, and bake at 800°C for 5h to obtain CT nanomaterials.

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Abstract

The invention discloses a charge transfer type automatic oxidation-reduced nano-material as well as a preparation method and application thereof, an ocean anti-fouling agent and an ocean anti-fouling coating, relating to the technical field of ocean pollution prevention. The CT nano-material is a composite nano-material which is doped with rare earth elements or not, wherein the composite nano-material mainly contains MnO, TiO2, ZnO and SiO2 in a molar ratio of (1-5) to (1-15) to (1-3) to (1-15). According to the CT nano-material, the defects that a traditional anti-fouling agent is easy to enrich, difficult to degrade, high in toxicity, short in anti-fouling period and unobvious in anti-fouling effect are relieved. The CT nano-material has remarkable inhibition effects to the adhesion of marine microorganisms, algae and large-sized fouling organisms under a low concentration, presents efficient and broad-spectrum anti-fouling activity, has phobotaxis to marine organisms, has no destruction property to the marine organisms and can be used as a low-toxicity ocean anti-fouling agent to be developed and applied.

Description

technical field [0001] The invention relates to the technical field of marine antifouling, in particular to a charge transfer type automatic redox nano material, its preparation method and application, marine antifouling agent and marine antifouling coating. Background technique [0002] Marine biofouling refers to the accumulation of microorganisms, plant organisms and animal organisms in the ocean on artificial surfaces. Various marine fouling organisms, such as microorganisms, algae, barnacles, oysters, mussels, limeworms, Moss, sea squirt, sea anemone, etc. adhere and deposit in a large area non-selectively on the surface of ship hulls, marine structures, and aquaculture cages. The attachment and fouling of marine fouling organisms will cause: (1) increase the roughness of the bottom of the ship, increase the ship's navigation resistance, increase energy consumption and emissions, and bring great harm to ship navigation; (2) accelerate the Structural parts such as fouli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D5/14C09D163/00
CPCC08K3/00C08K3/36C08K2003/2241C08K2003/2262C08K2003/2296C09D5/14C09D5/1618C09D163/00
Inventor 刘春花梁岩吴彬彬
Owner SHENZHEN INST OF ADVANCED TECH
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