Zinc ferrite-tin oxide composite material and preparation thereof and application of zinc ferrite-tin oxide composite material in photocatalysis

A technology of tin oxide and zinc ferrite, which is applied in the field of synthesis of composite photocatalytic materials, can solve the problems of poor photocatalytic activity and photocatalytic stability, unfavorable large-scale production and application, inconvenient recycling and reuse, etc., to solve the problem of difficult recycling , efficient recovery and repeated recycling, and excellent photocatalytic performance

Inactive Publication Date: 2021-06-29
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation method in the prior art is complicated, the cost is high, it is not conducive to large-scale industrial production and application, and its photocatalytic activity and photocatalytic stability are poor, it is not easy to recycle and reuse, and the waste of resources is serious

Method used

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  • Zinc ferrite-tin oxide composite material and preparation thereof and application of zinc ferrite-tin oxide composite material in photocatalysis

Examples

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Effect test

Embodiment example 1

[0026] refer to figure 1 ,, the preparation method of zinc ferrite-tin oxide nanocomposite photocatalyst, comprises the following steps:

[0027] 0.02mol ferric nitrate nonahydrate, 0.01mol zinc nitrate hexahydrate and 0.02mol tin tetrachloride pentahydrate are dissolved in deionized water, wherein the mol ratio of ferric nitrate nonahydrate, zinc nitrate hexahydrate and tin tetrachloride pentahydrate is 2:1:2, keep the molar ratio of zinc ferrite and tin oxide at 0.5:1, stir magnetically until all the compounds are evenly dispersed, then adjust the pH value of the mixed solution to 10 with 2mol / L sodium hydroxide solution, at room temperature Under the conditions, the mixed solution was placed in a hydrothermal reaction kettle, and hydrothermally reacted at 160°C for 6h. After the reaction, the product was centrifuged and washed, and finally calcined at 600°C for 2h to obtain a zinc ferrite-tin oxide nanocomposite photocatalyst.

Embodiment example 2

[0029] The preparation method of zinc ferrite-tin oxide nanocomposite photocatalyst comprises the following steps:

[0030] 0.02mol ferric nitrate nonahydrate, 0.01mol zinc nitrate hexahydrate and 0.01mol tin tetrachloride pentahydrate are dissolved in deionized water, wherein the mol ratio of ferric nitrate nonahydrate, zinc nitrate hexahydrate and tin tetrachloride pentahydrate is 2:1:1, keep the molar ratio of zinc ferrite and tin oxide at 1:1, stir magnetically until all the compounds are evenly dispersed, then adjust the pH of the mixed solution to 11 with 3mol / L sodium hydroxide solution, at room temperature The mixed solution was placed in a hydrothermal reaction kettle under certain conditions, and hydrothermally reacted at 180° C. for 7 hours. After the reaction, the product was centrifuged and washed, and finally calcined at 600° C. for 2 hours to obtain a zinc ferrite-tin oxide nanocomposite photocatalyst.

Embodiment example 3

[0032] The preparation method of zinc ferrite-tin oxide nanocomposite photocatalyst comprises the following steps:

[0033] 0.04mol ferric nitrate nonahydrate, 0.02mol zinc nitrate hexahydrate and 0.01mol tin tetrachloride pentahydrate are dissolved in deionized water, wherein the mol ratio of ferric nitrate nonahydrate, zinc nitrate hexahydrate and tin tetrachloride pentahydrate is 4:2:1, keep the molar ratio of zinc ferrite and tin oxide at 1:0.5, stir magnetically until all the compounds are evenly dispersed, then adjust the pH of the mixed solution to 12 with 4mol / L sodium hydroxide solution, at room temperature The mixed solution was placed in a hydrothermal reaction kettle under certain conditions, and hydrothermally reacted at 200°C for 8 hours. After the reaction, the product was washed by centrifugation, and finally calcined at 600°C for 2 hours to obtain a zinc ferrite-tin oxide nanocomposite photocatalyst.

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Abstract

The invention discloses a zinc ferrite-tin oxide composite material and preparation thereof, and application of the zinc ferrite-tin oxide composite material in photocatalysis.The preparation comprises the following steps: 1, dissolving a compound of ferric iron and zinc in deionized water according to a molar ratio of iron to zinc of 2:1, dissolving a tin compound in deionized water, and keeping the molar ratio of zinc ferrite to tin oxide at (0.01:1)-(1:0.01); and 2, uniformly mixing the two solutions obtained in the step 1, adjusting the pH value to 10-12, transferring into a hydrothermal reaction kettle, reacting at 160-180 DEG C for 6-8 hours, centrifugally washing the reaction product, and calcining for 2 hours to obtain the zinc ferrite-tin oxide nano composite photocatalyst. According to the invention, the preparation method is simple, high in operability, low in cost and good in environment compatibility, conditions are easy to control, and industrial large-scale production and application are facilitated; and the zinc ferrite-tin oxide composite material has excellent photocatalytic performance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of composite photocatalytic materials, and in particular relates to a zinc ferrite-tin oxide composite photocatalytic material, a preparation method thereof and an application in photocatalytic degradation of organic matter. Background technique [0002] As we all know, the main source of pollution in environmental pollution comes from the discharge of waste water and waste gas in industrial production. These wastewater and waste gas are often mainly composed of various organic substances, with complex components, and it is extremely difficult to directly treat them. In the actual production process, if the processing efficiency is low and the advanced processing process cannot be completed in time, it will inevitably increase the operating cost of the enterprise. In particular, water pollution is one of the problems that countries all over the world are facing and need to be solved urgently. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/835C02F1/30C02F101/34C02F101/36C02F101/38
CPCB01J35/004B01J23/835C02F1/30C02F2101/34C02F2101/36C02F2101/38C02F2305/10
Inventor 廖润华肖林锋王静李月明
Owner JINGDEZHEN CERAMIC INSTITUTE
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