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Preparation method for supported zinc oxide photocatalyst

A photocatalyst, zinc oxide technology, applied in the field of photocatalytic materials, to achieve the effect of improving activity and efficiency, improving utilization rate, and mild reaction conditions

Inactive Publication Date: 2017-02-01
GUANGXI NANNING SHENGQIAN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems existing in existing photocatalysts, and provides a preparation method of supported zinc oxide photocatalysts

Method used

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  • Preparation method for supported zinc oxide photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of supported zinc oxide photocatalyst, comprising the following steps:

[0027] (1) Weigh each raw material according to the proportion: 30g of zinc nitrate hexahydrate, 5g of polyethylene glycol stearate, 15g of thiourea, 5g of red mud, 1g of cobalt carbonate and 10g of kaolin;

[0028] (2) Add zinc nitrate hexahydrate into the ultrasonic generator, add 200mL of absolute ethanol to dissolve, then add sodium hydroxide solution with a concentration of 3mol / L to adjust the pH to 13, and continue ultrasonication at a frequency of 40KHz for 30min to obtain a suspension Turbid liquid A;

[0029] (3) Add thiourea into the stirrer, then add 100mL of water and stir to dissolve it to obtain suspension B;

[0030] (4) Pour suspension B into an ultrasonic generator equipped with suspension A, then add polyethylene glycol stearate, and continue ultrasonication for 60 minutes at a frequency of 40KHz to obtain a mixed solution;

[0031] (5) Put the mixture, red...

Embodiment 2

[0034] A preparation method of supported zinc oxide photocatalyst, comprising the following steps:

[0035] (1) Weigh each raw material according to the proportion: 40g of zinc nitrate hexahydrate, 8g of polyethylene glycol stearate, 20g of thiourea, 8g of red mud, 1.5g of cobalt carbonate and 12g of kaolin;

[0036] (2) Add zinc nitrate hexahydrate into the ultrasonic generator, add 250mL of absolute ethanol to dissolve, then add sodium hydroxide solution with a concentration of 5mol / L to adjust the pH to 13, and continue ultrasonication at a frequency of 60KHz for 20min to obtain a suspension Turbid liquid A;

[0037] (3) Add thiourea into the stirrer, then add 120mL of water and stir to dissolve it to obtain suspension B;

[0038] (4) Pour suspension B into an ultrasonic generator equipped with suspension A, then add polyethylene glycol stearate, and continue ultrasonication for 45 minutes at a frequency of 50KHz to obtain a mixture;

[0039] (5) Put the mixture, red mud,...

Embodiment 3

[0042] A preparation method of supported zinc oxide photocatalyst, comprising the following steps:

[0043] (1) Weigh each raw material according to the proportion: 50g of zinc nitrate hexahydrate, 10g of polyethylene glycol stearate, 18g of thiourea, 8g of red mud, 2g of cobalt carbonate and 15g of kaolin;

[0044] (2) Add zinc nitrate hexahydrate into the ultrasonic generator, add 350mL of absolute ethanol to dissolve, then add sodium hydroxide solution with a concentration of 1mol / L to adjust the pH to 12, and continue ultrasonication at a frequency of 60KHz for 30min to obtain a suspension Turbid liquid A;

[0045] (3) Add thiourea into the stirrer, then add 120mL of water and stir to dissolve it to obtain suspension B;

[0046] (4) Pour suspension B into an ultrasonic generator equipped with suspension A, then add polyethylene glycol stearate, and continue ultrasonication for 30 minutes at a frequency of 60KHz to obtain a mixture;

[0047] (5) Put the mixture, red mud, ...

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Abstract

The invention discloses a preparation method for a supported zinc oxide photocatalyst. The preparation method comprises the following steps: weighing raw materials consisting of, by weight, 30 to 50 parts of cadmium nitrate hexahydrate, 5 to 10 parts of polyethylene glycol stearate, 15 to 20 parts of thiourea, 5 to 10 parts of red mud, 1 to 2 parts of cobaltous carbonate and 10 to 15 parts of kaolin; adding cadmium nitrate hexahydrate into an ultrasonic generator, adding absolute ethyl alcohol for dissolving, then adding a sodium hydroxide solution and carrying out an ultrasonic reaction so as to obtain a suspension A; adding thiourea into a stirrer and then adding a proper amount of water so as to obtain a suspension B; pouring the suspension B into the suspension A, then adding polyethylene glycol stearate and carrying out an ultrasonic reaction so as to obtain a mixed solution; adding the mixed solution, red mud, cobaltous carbonate and kaolin into a ball mill, adding a proper amount of water and carrying out stirring so as to obtain a paste; and carrying out drying, crushing and roasting so as to obtain the photocatalyst. The preparation method has the advantages of wide sources of raw materials, low cost, simple preparation process, high production efficiency and low energy consumption; and the prepared photocatalyst has the advantages of good adsorption performance, high catalytic activity, high catalysis efficiency, etc.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a preparation method of a supported zinc oxide photocatalyst. Background technique [0002] Since the 21st century, with the improvement of the pace of industrialization and the excessive use of natural resources, various environmental pollution and energy scarcity problems have continued to intensify. Therefore, it is imminent to control all kinds of pollution and find new energy sources to relieve the pressure on the earth. Photocatalytic technology has been widely used in many fields such as wastewater treatment, gas purification, sterilization, antifouling, self-cleaning materials, dye-sensitized solar cells, cosmetics, and gas sensors. Photocatalysis is based on the basic characteristics of semiconductor materials that can generate photogenerated electrons with strong reductivity and holes with strong oxidative properties under light excitation. Solid photo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/06
CPCB01J23/06B01J23/80B01J37/0009B01J35/615B01J35/39
Inventor 杨贺
Owner GUANGXI NANNING SHENGQIAN TECH DEV CO LTD
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