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Method for deep purifying organic toxicant and waste water by photocatalysis-oxidation and preparation method for used photocatalysis material

A photocatalytic material, deep purification technology, applied in chemical instruments and methods, oxidized water/sewage treatment, energy wastewater treatment, etc., can solve the problems of incomplete mineralization, long treatment time, low degradation rate, etc., and achieve good visible light The effect of absorption performance, easy operation and broad application prospects

Inactive Publication Date: 2010-09-22
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the deep purification of organic toxic waste water is a complex system engineering, and the degradation rate of waste water containing organic toxic waste is not high by using one method alone, the treatment time required is generally very long, and the mineralization is not complete

Method used

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  • Method for deep purifying organic toxicant and waste water by photocatalysis-oxidation and preparation method for used photocatalysis material
  • Method for deep purifying organic toxicant and waste water by photocatalysis-oxidation and preparation method for used photocatalysis material
  • Method for deep purifying organic toxicant and waste water by photocatalysis-oxidation and preparation method for used photocatalysis material

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Embodiment 1

[0027] A photocatalysis-oxidation method for deep purification of organic poison wastewater, using core-shell Cu 2 O-TiO 2 The combined technology of photocatalytic materials and photooxidant bismuthate to purify organic wastewater is carried out in the order of photocatalysis and oxidation, and Cu is used first 2 O-TiO 2 The photocatalytic material undergoes initial degradation, and then the photooxidant bismuthate is used for deep mineralization purification.

[0028] Cu used 2 O-TiO 2 The preparation of the core-shell photocatalytic material is as follows:

[0029] 0.3g Cu at room temperature 2 O was added to 100 ml of ethanol solution and sonicated for 10 minutes to form a uniformly dispersed suspension. Add 0.029 g of butyl titanate solution dropwise to the resulting solution, sonicate for 10 minutes, and then add dropwise 20 ml of anhydrous ethanol-water mixed solution (anhydrous ethanol: water = 200:1), after stirring for 24 hours in a water bath at 40 degrees Celsius, Filte...

Embodiment 2

[0031] A photocatalysis-oxidation method for deep purification of organic poison wastewater, using core-shell Cu 2 O-TiO 2 The combined technology of photocatalytic materials and photooxidant bismuthate to purify organic wastewater is carried out in the order of photocatalysis and oxidation, and Cu is used first 2 O-TiO 2 The photocatalytic material undergoes initial degradation, and then the photooxidant bismuthate is used for deep mineralization purification.

[0032] Cu used 2 O-TiO 2 The preparation of the core-shell photocatalytic material is as follows:

[0033] 0.3g Cu at room temperature 2 O was added to 100 ml of ethanol solution and sonicated for 10 minutes to form a uniformly dispersed suspension. Add 0.073 g of butyl titanate solution dropwise to the resulting solution, sonicate for 10 minutes, and then add dropwise 20 ml of anhydrous ethanol-water mixed solution (anhydrous ethanol: water = 200:1), and after stirring for 24 hours in a water bath at 40 degrees Celsius, F...

Embodiment 3

[0035] A photocatalysis-oxidation method for deep purification of organic poison wastewater, using core-shell Cu 2 O-TiO 2 The combined technology of photocatalytic materials and photooxidant bismuthate to purify organic wastewater is carried out in the order of photocatalysis and oxidation, and Cu is used first 2 O-TiO 2 The photocatalytic material undergoes initial degradation, and then the photooxidant bismuthate is used for deep mineralization purification.

[0036] Cu used 2 O-TiO 2 The preparation of the core-shell photocatalytic material is as follows:

[0037] 0.3g Cu at room temperature 2 O was added to 100 ml of ethanol solution and sonicated for 10 minutes to form a uniformly dispersed suspension. 0.357 g of butyl titanate solution was added dropwise to the resulting solution, sonicated for 10 minutes, and then 20 ml of anhydrous ethanol-water mixed solution (anhydrous ethanol: water = 200:1) was added dropwise, after stirring for 24 hours in a water bath at 40 degrees Ce...

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Abstract

The invention discloses a method for deep purifying organic toxicant and waste water by photocatalysis-oxidation and a preparation method for the used photocatalysis material; under the light irradiation, a core-shell type Cu2O-TiO2 photocatalysis material and a photo-oxidant bismuthate coupling technique are used for deep purifying the organic waste water. In the core-shell type Cu2O-TiO2 photocatalysis material, the mole percentage of TiO2 / Cu2O+TiO2 is 0.1 / 100-50 / 100; the characteristic molecular thereof is (TiO2) x (Cu2O), wherein in the formula, X is larger than 0.0010 and less than or equal to 0.500. The invention uses the core-shell type Cu2O-TiO2 photocatalysis material and the photo-oxidant bismuthate coupling technique for purifying the organic waste water. Since the photocatalysis material has visible light absorption characteristics, therefore, the clean energy-sunlight can be utilized for achieving the purpose of environment purification; simultaneously, the coupling combination technique is adopted, therefore, the invention can well mineralize the pollutant, realizes the deep purification and has very good using prospect.

Description

Technical field [0001] The invention relates to a photocatalysis-oxidation method for deep purification of organic poison waste water and a preparation method of used photocatalytic materials, in particular to a method for purifying organic waste water by using Cu-Ti core-shell photocatalytic material-Bi series photooxidant combined . Background technique [0002] In the 21st century, the biggest problem facing mankind is to solve energy shortage and environmental pollution. Solving these two major issues is an urgent need for our country to achieve sustainable development and national security. The use of new photocatalysts such as semiconductor oxides to efficiently use solar energy, convert solar energy into clean energy such as chemical energy, or directly decompose environmental pollutants, will be able to fundamentally solve energy and environmental problems. Therefore, the implementation of this project not only reflects my country’s major needs for implementing a long-t...

Claims

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Application Information

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IPC IPC(8): C02F9/12B01J23/72C02F1/30C02F1/72C02F101/30
CPCY02W10/37
Inventor 王英储升刘红玲吴国豪郑新梅冯政骆磊磊孔飞于红霞邹志刚
Owner NANJING UNIV
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