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Preparation method of nano indium phosphate photocatalyst

A photocatalytic technology of indium phosphate, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. Excellent catalytic performance, improved visible light catalytic efficiency, and good dispersion

Inactive Publication Date: 2017-11-03
柳州若思纳米材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO 2 It has the characteristics of good stability and relatively high photocatalytic efficiency, but its photocatalytic efficiency has not yet reached the requirements of practical applications for the degradation of air and water pollutants
[0003] Indium phosphate gray-black crystal has a special pore structure and has a good photoresponse effect, so far there is little research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method for preparing a nanometer indium phosphate photocatalyst, characterized in that it comprises the following steps: under stirring at a rotating speed of 400r / s, dropwise adding a concentration of 0.4mol / L to an indium chloride solution having a volume of 40mL and a concentration of 0.4 mol / L, ammonium phosphate solution with a volume of 40mL, after the dropwise addition, continue to stir at a speed of 400r / s for 55min, form a colloid and then centrifuge, wash the solid with distilled water for 5 times, and dry it under vacuum at 105°C to obtain Nano-indium phosphate photocatalyst.

[0010] Application test 1

[0011] Weighed 1g of nano-indium phosphate photocatalyst and added it to 100mL methylene blue solution with a concentration of 30mg / L, and reacted for 150min under the irradiation of a 300w iodine tungsten lamp, and the decolorization rate was 95.5%.

Embodiment 2

[0013] A method for preparing a nano-indium phosphate photocatalyst, characterized in that it comprises the following steps: under stirring at a rotating speed of 300r / s, dropwise adding a concentration of 0.3 mol / L to an indium chloride solution having a volume of 30mL and a concentration of 0.3 mol / L, ammonium phosphate solution with a volume of 30mL, after the dropwise addition, continue to stir at a speed of 300r / s for 60min, form a colloid and then centrifuge, wash the solid with distilled water 4 times, and dry it under vacuum at 105°C to obtain Nano-indium phosphate photocatalyst.

[0014] Application test 2

[0015] Weigh 1g of nano-indium phosphate photocatalyst and add it into 100mL of acid scarlet solution with a concentration of 30mg / L. Under the irradiation of 300w iodine tungsten lamp, react for 150min, and the decolorization rate is 92.1%.

Embodiment 3

[0017] A method for preparing a nanometer indium phosphate photocatalyst, characterized in that it comprises the following steps: under stirring at a rotating speed of 200r / s, dropwise adding a concentration of 0.2mol / L to an indium chloride solution having a volume of 20mL and a concentration of 0.2mol / L mol / L, ammonium phosphate solution with a volume of 20mL, after the dropwise addition, continue to stir at a speed of 200r / s for 65min, form a colloid and then centrifuge, wash the solid with distilled water for 5 times, and dry it under vacuum at 105°C to obtain Nano-indium phosphate photocatalyst.

[0018] Application test 3

[0019] Weigh 1 g of the obtained nano-indium phosphate photocatalyst and add it to 100 mL of rhodamine B solution with a concentration of 30 mg / L. Under the irradiation of a 300 w iodine tungsten lamp, react for 150 min, and the decolorization rate is 92.4%.

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PUM

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Abstract

The invention discloses a preparation method of a nano indium phosphate photocatalyst. The preparation method comprises the following steps: dropwise adding an ammonium phosphate solution into an indium chloride solution during stirring at a rotating speed of 200 to 400 r / s, then continuously stirring the solutions at the same rotating speed for 55 to 65 minutes after dropwise adding is completed, thus forming colloid, centrifugally separating the colloid, washing the colloid with distilled water for 3 to 5 times, and drying, thus obtaining the nano indium phosphate photocatalyst. The catalyst is high in dispersivity, high in stability and excellent in photocatalysis performance; the visible photocatalysis efficiency is substantially improved when compared with that of a conventional catalyst such as TiO2.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, is a photocatalytic material used for treating organic wastewater, and particularly relates to a preparation method of a nanometer indium phosphate photocatalyst. Background technique [0002] At present, with the rapid development of industrial technology, the water resources that human beings rely on for survival are polluted to varying degrees, and water resource pollution has become an urgent problem that countries all over the world are facing. Pollutants in water, especially toxic organic pollutants, not only cause environmental pollution and ecological damage, but also seriously endanger human health. These organic pollutants include polycyclic aromatic hydrocarbons, polychlorinated biphenyls, pesticides, environmental interferons, dyes, etc. The energy crisis and environmental degradation in today's world force people to look for cleaner, renewable new energy sources and new met...

Claims

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Application Information

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IPC IPC(8): B01J27/18C02F1/30
CPCC02F1/30B01J27/1811B01D2255/802B01J35/39
Inventor 程昊白大伟郝光明史智鹏
Owner 柳州若思纳米材料科技有限公司
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