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Charge transfer type automatic oxidation-reduced nano-material as well as preparation method and application thereof, ocean anti-fouling agent and ocean anti-fouling coating

A marine antifouling agent, automatic oxidation technology, applied in antifouling/underwater coatings, epoxy resin coatings, coatings, etc. Fully meet the high anti-fouling requirements, the safety of marine organisms needs to be improved, etc., to achieve significant anti-fouling effect, significantly inhibit adhesion activity, and outstanding anti-fouling performance

Active Publication Date: 2017-12-08
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 oxidation-reduced nano-material as well as preparation method and application thereof, ocean anti-fouling agent and ocean anti-fouling coating
  • Charge transfer type automatic oxidation-reduced nano-material as well as preparation method and application thereof, ocean anti-fouling agent and ocean anti-fouling coating

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preparation example Construction

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

[0092] The composite nanomaterial is immersed in a solution containing rare earth elements, and after immersion, drying and roasting are performed to obtain a charge transfer type automatic redox nanomaterial.

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

[0094]The preparation method of the rare earth doped CT nanomaterial of the present invention adopts the impregnation combustion method, which has the advantages of simple process, strong operability, low cost, high product purity, small particle size, uniform rare earth element doping and high activity.

[0095] In a preferred embodiment, the impregnation employs ultrasonic impregnation.

[0096] Ultrasonic impregnation can make the rare earth elemen...

Embodiment 1

[0115] A CT nanomaterial is composed of MnO and TiO doped with rare earth elements La and Ce. 2 , ZnO and SiO 2 The composite nanomaterials are composed of a molar ratio of the main components of MnO:TiO 2 : ZnO: SiO 2 =2:15:1:12, the co-doping amount of rare earth elements La and Ce is 1wt%, and the molar ratio of the two is 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 salt is calculated according to the amount of doping), La (NO 3 ) 3 ·6H 2 O, Ce (NO 3 ) 3 ·6H 2 The mixed aqueous solution of O is impregnated into MnO, TiO 2 , ZnO and SiO 2 In the composite nanomaterial, after ultrasonic immersion for 1 h, it was dried at 100 °C, placed in a muffle furnace, and calcined at 600 °C for 8 h to obtain CT nanomaterials.

Embodiment 2

[0118] A CT nanomaterial is composed of MnO and TiO doped with rare earth elements La and Ce. 2 , ZnO and SiO 2 The composite nanomaterials are composed of a molar ratio of the main components of 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 the two is 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 salt is calculated according to the amount of doping), La (NO 3 ) 3 ·6H 2 O, Ce (NO 3 ) 3 ·6H 2 The mixed aqueous solution of O is impregnated into MnO, TiO 2 , ZnO and SiO 2 Among the composite nanomaterials, ultrasonically immersed for 1.5 hours, dried at 80 °C, placed in a muffle furnace, and calcined at 800 °C for 5 hours 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 nanomaterial, a preparation method and application thereof, a marine antifouling agent and a marine antifouling paint. 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 squirts, sea anemones, etc. adhere and deposit non-selectively and in large areas on the surfaces of ship shells, marine buildings, 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 navigation resistance of the ship, increase the energy consumption and discharge, and bring great harm to the navigation of the ship; (2) accelerate th...

Claims

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Application Information

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Patent Type & Authority Applications(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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