Functional nano Ti2O/Cu2O heterophase Fenton thin film and preparation method as well as use

A functional nano and heterogeneous technology, applied in chemical instruments and methods, anti-fouling/underwater coatings, chemical/physical processes, etc., can solve problems such as easy recombination, accelerated oxidation, and low carrier transport efficiency, and achieve chemical The effect of good stability and wide application prospects

Inactive Publication Date: 2008-12-17
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of semiconductors with narrow bandgap for photocatalysts has the problem of low photo-excited carrier transport efficiency and easy

Method used

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  • Functional nano Ti2O/Cu2O heterophase Fenton thin film and preparation method as well as use
  • Functional nano Ti2O/Cu2O heterophase Fenton thin film and preparation method as well as use
  • Functional nano Ti2O/Cu2O heterophase Fenton thin film and preparation method as well as use

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0037] Example 1.

[0038] Preparation of TiO by Electrochemical Method 2 / Cu 2 O nanocomposites to finally obtain functional nano-TiO 2 / Cu 2 Process of O Heterogeneous Fenton Composite Film Material:

[0039] Add 2 g of mechanically ground nano-TiO to the cathode cell prior to electrolysis 2 (P25, TiO containing 80% anatase and 20% rutile 2 , Dessuga Co) electrolyte is 0.1 mol / L NaOH alkaline solution, titanium is used as cathode; 1M NaCl salt solution is added to the anode pool, copper plate is used as anode, and copper is reduced to Cu by electrolysis 2 O. During electrolysis, the control current is 0.5A, the temperature is about 80°C, the reaction time is 20 minutes, and the stirring should be continued during the electrolysis process. The electrolyzed product was centrifuged, washed with ethanol and distilled water for three times, and vacuum-dried at 60 °C to obtain TiO. 2 / Cu 2 O (mass ratio of 1:1) nanocomposite. 1 g of the obtained TiO 2 / Cu 2 O nanocompo...

Example Embodiment

[0052] Example 2.

[0053] Preparation of TiO by chemical deposition 2 / Cu 2 O nanocomposites to finally obtain nano-TiO 2 / Cu 2 Process of O Heterogeneous Fenton Composite Film Material:

[0054] Add 4g of mechanically ground nano-TiO to 200ml of diethylene glycol solvent 2 (P25, TiO containing 80% anatase and 20% rutile 2 , Dessuga Co) and 0.1 M copper acetate, and stir to make the TiO 2 Disperse evenly in the system. The temperature was raised to about 180°C, the reaction time was 3 hours, and the stirring should be continued during the reaction. After the reaction was completed, the product was centrifuged, washed with ethanol for three times, and vacuum-dried at 60 °C to obtain TiO. 2 / Cu 2 O nanocomposites. The obtained 2g of the above composite material was mixed with 15ml of lithium water glass (Li 2 SiO 3 , with 20% SiO 2 , Central China Normal University New Materials Factory) mixed, uniformly coated on the surface of glass fiber cloth (300mm × 300mm) to...

Example Embodiment

[0056] Example 3.

[0057] Preparation of TiO by hydrothermal (or solvothermal) method 2 / Cu 2 O nanocomposites to finally obtain nano-TiO 2 / Cu 2 Process of O Heterogeneous Fenton Composite Film Material:

[0058] Before the reaction, 3g of mechanically ground nano-TiO was added to 80ml of ethanol-water mixed solvent (the volume ratio of ethanol and water was 1:3). 2 (P25, TiO containing 80% anatase and 20% rutile 2 , Dessuga Co) and 0.05M copper sulfate, adjust the pH to 7-9, ultrasonically make the TiO 2 Disperse evenly in the system. Transfer the mixed solution to a hydrothermal kettle, put it into a muffle furnace, raise the temperature to 180-200°C, and the reaction time is 18 hours. After the reaction is completed, the product is centrifuged, washed three times with ethanol and distilled water, and vacuum-dried at 60 °C to obtain TiO. 2 / Cu 2 O nanocomposites. The obtained 3g of the above TiO 2 / Cu 2 O nanocomposite with 15ml lithium water glass (Li 2 SiO ...

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Abstract

The invention relates to a nanometer TiO2/Cu2O out-phase Fenton laminated film material which consists of a TiO2/Cu2O nanocomposite and an inorganic coating binder, wherein, the mass ratio between the TiO2/Cu2O nanocomposite and the inorganic coating binder is 1:1-1:500; the mass ratio between TiO2 and Cu2O in the TiO2/Cu2O nanocomposite is 1:0.01-1:100. The preparation method is as follows: nanometer TiO2 is taken as a crystal nucleus to induce the crystallization of Cu2O and the TiO2/Cu2O nanocomposite is prepared by an electrochemical process, chemical deposit or hydrothermal method; the composite prepared and the inorganic coating binder are mixed evenly and coated on the surface of substrate cleaned to prepare the TiO2/Cu2O laminated film and after the binder is totally solidified, the out-phase Fenton laminated film material is obtained. The nanometer TiO2/Cu2O out-phase Fenton laminated film material has better effect on sterilization, algae-killing, killing cancer cell, organic pollutant degradation, and the like, and is hopefully applied to indoor sterilization for building, degrading organics cleaning coating, outdoor self-cleaning coating for building, metal antifouling coating, public sterilization coating, special sterilization coating in hospital, daily chemical products, etc.

Description

technical field [0001] The invention relates to nano-TiO with the functions of visible light sterilization, algae killing, cancer cell killing and degradation of organic pollutants, etc. 2 / Cu 2 O heterogeneous Fenton thin film and preparation method and application. It belongs to the combination of semiconductor nanomaterial composite technology and visible light catalytic oxidation technology. The obtained heterogeneous Fenton film can be used for indoor sterilization of buildings, cleaning coatings for degrading organic matter, self-cleaning coatings for building exteriors, metal antifouling coatings, bactericidal coatings in public places, Special bactericidal coatings for hospitals, daily chemical products, etc. Background technique [0002] Photooxidation technology mainly uses strong oxidants to generate hydroxyl radicals (·OH) with strong oxidizing ability to completely mineralize organic pollutants or kill bacteria and algae, which belongs to advanced oxidation te...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J21/06A61L2/14C09D5/14C09D5/16
Inventor 余颖李家麟徐芬张永刚
Owner HUAZHONG NORMAL UNIV
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