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Strong-reducing-property visible light response photocatalyst with urea and ferric chloride as raw materials

A photocatalyst and ferric chloride technology, applied in the field of environment and materials, can solve the problems of reducing the degradation efficiency of pollutants in water, easy oxidation and aggregation, and achieve good economic and environmental benefits, improve catalytic efficiency, and low cost.

Inactive Publication Date: 2015-12-23
李若然
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high surface energy of nano-iron, it is easy to oxidize and agglomerate in practical applications, which inhibits the reactivity of nano-iron, thereby reducing its degradation efficiency for pollutants in water.

Method used

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  • Strong-reducing-property visible light response photocatalyst with urea and ferric chloride as raw materials
  • Strong-reducing-property visible light response photocatalyst with urea and ferric chloride as raw materials

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Put urea into a mortar, grind and pulverize it, and calcinate it at 550°C for 4 hours, and the obtained block g-C 3 N 4 , added to methanol solution, after ultrasonic treatment for 1h, heated in water bath for 3h, washed with methanol, filtered, and dried to obtain flaky g-C 3 N 4 , by sheet g-C 3 N 4 : The mass ratio of nano-iron=100:0.5 weighs ferric chloride (FeCl 3 ) and flake g-C 3 N 4 , stirred for 2 hours to obtain a suspension, sodium borohydride ethanol solution (10 mg / ml) was added to the obtained suspension, stirred for 1 hour, centrifuged, washed and dried to obtain a strong reducing visible light response photocatalyst.

[0029] Weigh 50mg of the strong reductive visible light response photocatalyst that is made, add to the mixed solution of 50ml (rhodamine B and CuCl 2 The concentration is 20ppm), using a xenon lamp as a light source, using a visible light filter to let the visible light of 400-780nm pass through the filter, and irradiate the sample...

Embodiment 2

[0031] Put urea into a mortar, grind and pulverize it, and calcinate it at 550°C for 4 hours, and the obtained block g-C 3 N 4 , added to methanol solution, after ultrasonic treatment for 1h, heated in water bath for 3h, washed with methanol, filtered, and dried to obtain flaky g-C 3 N 4 , press g-C 3 N 4: Nano iron = 100:1 ratio to weigh ferric chloride (FeCl 3 ) and flake g-C 3 N 4 , stirred for 2 hours to obtain a suspension, sodium borohydride ethanol solution (10 mg / ml) was added to the obtained suspension, stirred for 1 hour, centrifuged, washed and dried to obtain a strong reducing visible light response photocatalyst.

[0032] Weigh 50mg of the strong reductive visible light response photocatalyst that is made, add to the mixed solution of 50ml (rhodamine B and CuCl 2 The concentration is 20ppm), using a xenon lamp as a light source, using a visible light filter to let the visible light of 400-780nm pass through the filter, and irradiate the sample. After a cert...

Embodiment 3

[0034] Put urea into a mortar, grind and pulverize it, and calcinate it at 550°C for 4 hours, and the obtained block g-C 3 N 4 , added to methanol solution, after ultrasonic treatment for 1h, heated in water bath for 3h, washed with methanol, filtered, and dried to obtain flaky g-C 3 N 4 , press g-C 3 N 4 : The ratio of nano-iron=100:1.5 weighs ferric chloride (FeCl 3 ) and flake g-C 3 N 4 , stirred for 2 hours to obtain a suspension, sodium borohydride ethanol solution (10 mg / ml) was added to the obtained suspension, stirred for 1 hour, centrifuged, washed and dried to obtain a strong reducing visible light response photocatalyst.

[0035] Weigh 50mg of the strong reductive visible light response photocatalyst that is made, add to the mixed solution of 50ml (rhodamine B and CuCl 2 The concentration is 20ppm), using a xenon lamp as the light source, using a visible light filter to let the visible light of 400-780nm pass through the filter, and irradiate the sample. Afte...

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Abstract

The invention provides a strong-reducing-property visible light response photocatalyst with urea and ferric chloride as raw materials and a preparation method of the strong-reducing-property visible light response photocatalyst and belongs to the field of photocatalysis and environmental protection. The prepared strong-reducing-property visible light response photocatalyst is prepared by adopting prepared g-C3N4 as a carrier, adopting sodium borohydride as a reducing agent, and loading nano-iron to a g-C3N4 chip. The prepared catalyst can utilize active nano-iron for reducing heavy metal ions in water, sedimentation is further generated, meanwhile, g-C3N4 can be utilized for oxidizing organic pollutants in water under the illumination condition, and effective combined treatment on the heavy metal ions and the organic pollutants is achieved. The preparation method is simple, raw materials are easy to obtain, cost is low, water treatment efficiency is high, good economic benefits and environmental benefits are achieved, and the strong-reducing-property visible light response photocatalyst can be well put into large-scale production.

Description

Technical field [0001] The invention is the field of environment and material, which involves a strong reduction of light response catalyst and its preparation methods with a strong reduction of urea and iron chloride as raw materials. Background technique [0002] Two important sources of heavy metal and organic water pollution have become a serious threat to human health and ecological environment safety.Heavy metal pollution in water bodies is generally caused by mercury (HG), lead (PB), cadmium (CD), zinc (zn), arsenic (AS) and other elements in the water.The characteristics of low toxic dosage, easy accumulation, difficulty degradation, difficulty governance are therefore the focus of environmental monitoring and governance.Compared with heavy metal pollutants, organic pollutants have long existence, wide range, and difficult to break down in the water, and they usually have toxic, carcinogenic, and dissolved oxygen in the water body, which brings serious harm to the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/72C02F1/58C02F1/30C02F101/38C02F101/20C02F101/30
Inventor 李若然
Owner 李若然
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