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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PUM

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Abstract

The invention discloses a method for preparing magnetic composite cotton-supported neodymium-doped BiOCl photocatalysts. The method is characterized by comprising steps of dissolving degreasing cottonby the aid of N-methyl-N-morpholine oxide to obtain solution, and adding nanometer ferroferric oxide into the solution to obtain magnetic composite cotton particles; adding, by weight, 68-72% of magnetic composite cotton particle suspension into a reactor, stirring the magnetic composite cotton particle suspension, dropwise adding, by weight, 20-25% of neodymium and Bi(NO3)3 mixed solution into the reactor, heating the reactor until the temperature of the reactor reaches 50+ / -2 DEG C, keeping the temperature of the reactor constant, carrying out stirring and reaction for 30 min, adding, by weight, 4-9% of ammonium carbonate into the reactor, transferring products into a reaction kettle, sealing the reaction kettle, heating the reaction kettle until the temperature of the reaction kettle reaches 120+ / -2 DEG C, keeping the temperature of the reaction kettle constant, carrying out reaction for 6-8 h, cooling reaction products until the temperatures of the reaction products reach the roomtemperature, separating solid from liquid, washing the reaction products by the aid of deionized water and drying the reaction products to obtain the magnetic composite cotton-supported neodymium-doped BiOCl photocatalysts. The method has the advantages of simplicity, good stability, degradability, environmental friendliness and the like. Besides, the magnetic composite cotton-supported neodymium-doped BiOCl photocatalysts are easy to recycle, high in catalytic activity and low in usage, reaction conditions for the magnetic composite cotton-supported neodymium-doped BiOCl photocatalysts are mild, and the like.

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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