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Photocatalytic material with high activity under visible light and its preparation method

A photocatalytic material and high-activity technology, applied in chemical instruments and methods, light water/sewage treatment, water pollutants, etc., can solve the problem of no significant improvement in catalytic activity, and achieve constant catalytic effect, low cost, and improved The effect of utilization efficiency

Inactive Publication Date: 2014-04-09
冯亮 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But by doping TiO with a single element 2 The obtained catalytic material has no significant improvement in its catalytic activity in the visible light region

Method used

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  • Photocatalytic material with high activity under visible light and its preparation method
  • Photocatalytic material with high activity under visible light and its preparation method
  • Photocatalytic material with high activity under visible light and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. 10.0 mL of commercially available (purity ≥ 98%) n-butyl titanate (Ti(OC 4 h 9 ) 4 ) solution was added dropwise to 85.0 mL of commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) solution, stirred while adding dropwise, after the dropwise addition was completed, the mixed solution was continuously stirred at room temperature for 30 minutes, and the obtained solution was amorphous TiO 2 Sol, referred to as A solution;

[0026] b. H 2 O, commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) and three commercially available (concentration 70%) concentrated nitric acid liquids were mixed according to the volume ratio of 3:3:1, and 7.0mL of the above mixed solution was measured, and then 0.1615g of ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 0.2127g erbium nitrate (Er(NO 3 ) 3 ·5H 2 O) added to 7.0mL of the above mixed solution, and ultrasonically treated with an ultrasonic instrument with a power of 15 watts at room temperature for 5 minutes t...

Embodiment 2

[0033] a. 12.0 mL of commercially available (purity ≥ 98%) n-butyl titanate (Ti(OC 4 h 9 ) 4 ) solution was added dropwise to 100.0 mL of commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) solution, stirred while adding dropwise, after the dropwise addition was completed, the mixed solution was continuously stirred at room temperature for 30 minutes, and the obtained solution was amorphous TiO 2 Sol, referred to as A solution;

[0034] b. H 2 O, commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) and commercially available (concentration 70%) concentrated nitric acid three liquids are mixed according to the volume ratio of 3:3:1, then 0.1615g ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 0.0705g erbium nitrate (Er(NO 3 ) 3 ·5H 2 O) added to 8.0mL of the above mixed solution, and ultrasonically treated with an ultrasonic instrument with a power of 15 watts at room temperature for 5 minutes, the prepared solution was a dopant mixed solution, referred...

Embodiment 3

[0041] a. 10.0 mL of commercially available (purity ≥ 98%) n-butyl titanate (Ti(OC 4 h 9 ) 4 ) solution was added dropwise to 100.0 mL of commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) solution, stirred while adding dropwise, after the dropwise addition was completed, the mixed solution was continuously stirred at room temperature for 30 minutes, and the obtained solution was amorphous TiO 2 Sol, referred to as A solution;

[0042] b. H 2 O, commercially available (purity ≥ 99%) isopropanol (C 3 h 7 OH) and commercially available (concentration 70%) concentrated nitric acid three liquids are mixed according to the volume ratio of 3:3:1, then 0.1615g ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 0.2127g erbium nitrate (Er(NO 3 ) 3 ·5H 2 O) added to 7.0mL of the above mixed solution, and ultrasonically treated with an ultrasonic instrument with a power of 15 watts at room temperature for 5 minutes, the prepared solution was a dopant mixed solution, referred...

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Abstract

The invention relates to a photocatalytic material with high activity under visible light and its preparation method. The photocatalytic material comprises, by mass: 0.8%-3.3% of iron, 0.9%-3.8% of erbium, 4.9%-8.1% of carbon, and the balance TiO2. The preparation method consists of: first adding titanium tetrabutoxide into isopropanol dropwisely to obtain an amorphous TiO2 sol; mixing H2O, isopropanol, and concentrated nitric acid, then adding ferric nitrate and erbium nitrate so as to prepare a dopant mixed solution, which is then added into the amorphous TiO2 sol, thus obtaining a ferric nitrate and erbium nitrate doped TiO2 sol; then, putting the doped TiO2 sol into an oven of 120DEG C and conducting a heat treatment for 4 hours, then taking it out and cooling it to room temperature, thus obtaining an Fe / Er / C-TiO2 suspending solution; carrying out centrifugation to obtain an Fe / Er / C-TiO2 solid; and drying the solid under a temperature of 80-85DEG C, then performing grinding and sieving through a sieve of 50 meshes, and implementing a heat treatment in a muffle furnace for 240 minutes at 450-600DEG C, thus obtaining the photocatalytic material with high activity under visible light. The method provided in the invention has low cost, and the prepared photocatalytic material has a good photocatalytic effect under visible light as well as high stability, and can effectively degrade organic pollutants in water.

Description

technical field [0001] The invention relates to a highly active photocatalytic material under visible light and a preparation method thereof, belonging to the technical field of catalytic materials for degrading organic pollutants in water with visible light. Background technique [0002] With the development of the industrial process, people's living conditions have undergone earth-shaking changes, and the living standard has been greatly improved, but at the same time, it has also brought destructive effects on the environment on which people live. Every year, a large number of dyes, hormones, residual pesticides and other waste water rich in carcinogenic, teratogenic, and mutagenic substances such as benzene rings, amino groups, and azo groups are continuously discharged into rivers, lakes, and seas, which not only brings harm to our human health. The great threat also has a great impact on the survival of other creatures. Hormones, such as bisphenol A, are widely found ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83C02F1/30C02F101/34
CPCY02W10/37
Inventor 冯亮叶标侯典训
Owner 冯亮