Polyurethane foam supported liver/graphene/ titanium dioxide nano particle composite material, preparation method thereof and application thereof

A technology of polyurethane sponge and titanium dioxide, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, other chemical processes, etc., can solve the problem of weakening the actual processing capacity of photocatalysis, difficulty in recycling, secondary pollution, etc. problems, to achieve the effect of ensuring stability and reusability, cheap raw materials, and simple preparation process

Inactive Publication Date: 2015-12-23
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the powdery form often makes it difficult to recycle most photocatalytic materials and causes serious secondary pollution, and the photocatalyst dispersed in water cannot fully contact with floating oil pollution, which weakens its photocatalytic properties. Actual processing capacity of catalysis

Method used

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  • Polyurethane foam supported liver/graphene/ titanium dioxide nano particle composite material, preparation method thereof and application thereof
  • Polyurethane foam supported liver/graphene/ titanium dioxide nano particle composite material, preparation method thereof and application thereof
  • Polyurethane foam supported liver/graphene/ titanium dioxide nano particle composite material, preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of graphite oxide: add 1 g of graphite with a purity of 99.5% to a mixed solution consisting of 90ml of concentrated sulfuric acid with a mass fraction of 98% and 25ml of concentrated nitric acid with a mass fraction of 65%, and place in an ice-water mixing bath (temperature control (below 4°C) and stirred for 20min. Then slowly add 6g of potassium permanganate and stir for 1h. Then the mixed solution was heated to 85°C for 30min, then 10ml of hydrogen peroxide with a mass fraction of 30% was added, stirred for 10min, the mixture was suction filtered, and finally the solid was repeatedly washed with 100ml of dilute hydrochloric acid and 150ml of deionized water. After washing three times, the solid matter was dried in a vacuum oven at 60° C. for 12 hours to obtain graphite oxide.

[0031](2) Preparation of graphene / titanium dioxide nanoparticles: ultrasonically disperse 0.025g of graphite oxide in a mixed solution of 60ml of distilled water and 30ml of ...

Embodiment 2

[0036] (1) Preparation of graphite oxide: add 1 g of graphite with a purity of 99.5% to a mixed solution consisting of 90ml of concentrated sulfuric acid with a mass fraction of 98% and 25ml of concentrated nitric acid with a mass fraction of 65%, and place in an ice-water mixing bath (temperature control (below 4°C) and stir for 20min. Then slowly add 6g of potassium permanganate and stir for 1h. Then the mixed solution was heated to 85°C for 30min, then 10ml of hydrogen peroxide with a mass fraction of 30% was added, stirred for 10min, the mixture was suction filtered, and finally the solid was repeatedly washed with 100ml of dilute hydrochloric acid and 150ml of deionized water. After washing three times, the solid matter was dried in a vacuum oven at 60° C. for 12 hours to obtain graphite oxide.

[0037] (2) Preparation of graphene / titanium dioxide nanoparticles: ultrasonically disperse 0.025g of graphite oxide in a mixed solution of 60ml of distilled water and 30ml of fo...

Embodiment 3

[0041] (1) Preparation of graphite oxide: add 1 g of graphite with a purity of 99.5% to a mixed solution consisting of 90ml of concentrated sulfuric acid with a mass fraction of 98% and 25ml of concentrated nitric acid with a mass fraction of 65%, and place in an ice-water mixing bath (temperature control (below 4°C) and stir for 20min. Then slowly add 6g of potassium permanganate and stir for 1h. Then the mixed solution was heated to 85°C for 30min, then 10ml of hydrogen peroxide with a mass fraction of 30% was added, stirred for 10min, the mixture was suction filtered, and finally the solid was repeatedly washed with 100ml of dilute hydrochloric acid and 150ml of deionized water. After washing three times, the solid matter was dried in a vacuum oven at 60° C. for 12 hours to obtain graphite oxide.

[0042] (2) Preparation of graphene / titanium dioxide nanoparticles: ultrasonically disperse 0.025g of graphite oxide in a mixed solution of 60ml of distilled water and 30ml of fo...

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Abstract

The invention discloses a polyurethane foam supported liver / graphene / titanium dioxide nano particle composite material, a preparation method thereof and an application thereof. The material is a three-dimensional structure which is specifically that sliver / graphene / titanium dioxide ternary nano particles are uniformly loaded in the surface and a base body of the polyurethane foam. The preparation method comprises: preparing graphene / titanium dioxide binary nano particles; adding silver nitrate to carry out silver ion modification, thereby preparing silver / graphene / titanium dioxide ternary nano particles; and finally, quickly mixing and stirring a mixed solution of the silver / graphene / titanium dioxide nano particles and diphenyl methylpropane diisocyanate with a mixed solution of polyether polyol and dichloromethane, thereby preparing the polyurethane foam supported liver / graphene / titanium dioxide ternary nano particle composite material. The material provided by the invention has strong adsorption effect, and can degrade oil pollutants on the surface of a water body under irradiation of visible light, thereby achieving great potential in surface water remediation.

Description

technical field [0001] The field of the present invention is the preparation of photocatalytic composite materials and its application in water environment treatment. Specifically, the present invention relates to a polyurethane sponge-loaded silver / graphene / titanium dioxide nanoparticle composite material, preparation method and application, which can be used In-situ remediation of oil-contaminated water bodies. Background technique [0002] With the increasing use and transportation of oil products, oil spills of various scales occur from time to time. In recent years, more and more attention has been paid to the environmental pollution caused by oil tank leakage of oil tankers in coastal and river transportation. The oil spill floats on the surface of the water body, reducing the gas exchange between the atmosphere and the water body, reducing the dissolved oxygen content in the water body, hindering the photosynthesis of algae, causing a large number of aquatic animal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/26B01J20/30B01J31/38C02F1/28C02F1/30
Inventor 李轶倪凌峰王晶李杰郭燕飞
Owner HOHAI UNIV
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