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Preparation of a magnetic composite cotton-supported neodymium-doped biocl photocatalyst

A photocatalyst, neodymium-doped technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve good absorption, wide source of cotton, and easy separation

Inactive Publication Date: 2019-09-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the preparation of supported BiOCl photocatalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of magnetic composite cotton particles: In the reactor, add N-methyl-N-oxide morpholine: 60 mL, deionized water: 13 mL, absorbent cotton: 12g, ultrasonically disperse, and the temperature rises to 90°C Constant temperature, stirring, reflux reaction for 9 hours, add polyvinyl alcohol: 3g, stir to dissolve, then add nano ferric oxide: 3g, the temperature drops to 65±2°C, borax: 1g, stir to dissolve, spray into the coagulation liquid, solidify liquid separation, washing and drying to obtain magnetic composite cotton particles;

[0024] (2) Preparation of solution A: In the reactor, add deionized water: 64 mL, concentrated hydrochloric acid: 15 mL, neodymium oxide: 0.2 g, heat to dissolve, then add Bi(NO 3 ) 3 : 18g, stirred and dissolved to obtain A solution;

[0025] (3) Preparation of B suspension: In the reactor, add deionized water: 60 mL, magnetic composite cotton particles: 40 g, ultrasonically disperse and stir to obtain B suspension;

[0026] (4...

Embodiment 2

[0028] (1) Preparation of magnetic composite cotton particles: In the reactor, add N-methyl-N-oxide morpholine: 58 mL, deionized water: 12 mL, absorbent cotton: 15 g, ultrasonically disperse, and the temperature rises to 90 °C Constant temperature, stirring, reflux reaction for 8 hours, add polyvinyl alcohol: 4g, stir to dissolve, then add nano-ferric oxide: 3.5g, the temperature drops to 65±2°C, borax: 0.5g, stir to dissolve, spray into the coagulation liquid , solid-liquid separation, washing, and drying to obtain magnetic composite cotton particles;

[0029] (2) Preparation of solution A: In the reactor, add deionized water: 66 mL, concentrated hydrochloric acid: 14 mL, neodymium oxide: 0.5 g, heat to dissolve, then add Bi(NO 3 ) 3 : 17g, stirred and dissolved to obtain A solution;

[0030] (3) Preparation of suspension B: In the reactor, add deionized water: 58 mL, magnetic composite cotton particles: 42 g, ultrasonically disperse and stir to obtain suspension B;

[003...

Embodiment 3

[0033](1) Preparation of magnetic composite cotton particles: In the reactor, add N-methyl-N-oxide morpholine: 64 mL, deionized water: 15 mL, absorbent cotton: 10 g, ultrasonically disperse, and the temperature rises to 90 °C Constant temperature, stirring, reflux reaction for 10 hours, add polyvinyl alcohol: 2g, stir to dissolve, then add nano-ferric oxide: 2.2g, the temperature drops to 65±2°C, borax: 0.8g, stir to dissolve, spray into the coagulation liquid , solid-liquid separation, washing, and drying to obtain magnetic composite cotton particles;

[0034] (2) Preparation of solution A: In the reactor, add deionized water: 61 mL, concentrated hydrochloric acid: 16 mL, neodymium oxide: 0.1 g, heat to dissolve, then add Bi(NO 3 ) 3 : 20g, stirred and dissolved to obtain A solution;

[0035] (3) Preparation of suspension B: In the reactor, add deionized water: 64 mL, magnetic composite cotton particles: 36 g, ultrasonically disperse and stir to obtain suspension B;

[003...

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Abstract

The invention discloses a preparation method for magnetic composite cotton loaded with neodymium-doped BiOCl photocatalyst, which is characterized in that the absorbent cotton is dissolved with N-methyl-N-oxymorpholine, and nanometer iron tetroxide is added to prepare the magnetic composite Cotton particles; in the reactor, add the magnetic composite cotton particle suspension according to the following composition mass percentage: 68~72%, stir, and dropwise add neodymium and Bi(NO 3 ) 3 Mixed solution: 20~25%, raise the temperature to 50±2°C constant temperature, stir and react for 30 minutes, add amine carbonate: 4~9%, transfer it to the reaction kettle, seal, and raise the temperature to 120±2°C constant temperature , react for 6 to 8 hours, cool to room temperature, separate solid and liquid, wash with deionized water, and dry to obtain magnetic composite cotton loaded neodymium-doped BiOCl photocatalyst. The invention has the characteristics of simple preparation method, good stability, degradability and environmental friendliness; the catalyst is easy to recycle, the reaction conditions are mild, the catalytic activity is high, and the dosage is small.

Description

technical field [0001] The invention relates to the technical field of preparation of supported catalysts, in particular to a preparation method of a magnetic composite cotton-supported neodymium-doped BiOCl photocatalyst and its application in wastewater treatment. Background technique [0002] Semiconductor photocatalysis technology, as a new "green chemical method", has been widely studied in energy conversion and environmental restoration applications. Traditional semiconductor photocatalysts such as TiO2 and ZnO have strong oxidizing properties and good photoinducibility, and have been widely used in the degradation of various pollutants in water bodies. The ability to utilize ultraviolet light, which accounts for only 4% of the solar spectrum, significantly limits its applications. Therefore, the development of new visible-light-responsive semiconductor photocatalysts has attracted more and more attention. In recent years, bismuth oxyhalide compounds (BiOX, X = Cl, B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J31/28C02F2101/345C02F2101/38C02F2101/308C02F2305/10B01J35/39
Inventor 李慧芝杨秋苹李晓峰
Owner UNIV OF JINAN
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