Preparation of Erbium-doped Biocl Photocatalysts Supported by Porous Magnetic Composite Proteins

A composite protein and photocatalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effect of increasing specific surface area, simple use, and environmental friendliness

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

[0020] (1) Preparation of porous magnetic composite protein: In the reactor, add the following composition by mass percentage, deionized water: 70 mL, polyvinyl alcohol: 3g, heat and stir to dissolve, cool to room temperature, add protein powder: 12g, nano four Ferric oxide: 4.2g, ultrasonic dispersion for 30 min, add borax: 0.8g, stir and mix evenly, stir, the temperature rises to 65℃, drop by mass percent magnesium chloride solution: 10 mL, cool to room temperature, and place for 2 h , Solid-liquid separation, washing, and repeated freeze-drying to obtain porous magnetic composite protein;

[0021] (2) Preparation of Erbium-doped BiOCl powder: In the reactor, add the following composition mass percentage, 4mol / LHNO 3 :75 mL, Er 2 O 3 :1.0g, heated to dissolve, then add Bi(NO 3 ) 3 :11g, N-(tert-butoxycarbonyl)-D-alanine hydrochloride: 13g, heat at low temperature, temperature between 100~120℃, evaporate water to form a viscous colloid, ignite and burn to make loose erbium Doped...

Embodiment 2

[0024] (1) Preparation of porous magnetic composite protein: In the reactor, add the following composition by mass percentage, deionized water: 680 mL, polyvinyl alcohol: 50g, heat and stir to dissolve, cool to room temperature, add protein powder: 150g, nano four Ferric oxide: 35g, ultrasonic dispersion for 30 min, add borax: 5g, stir and mix evenly, stir, the temperature rises to 65 ℃, drop by mass percent magnesium chloride solution: 80 mL, cool to room temperature, place for 2 h, solidify Liquid separation, washing, and repeated freeze-drying to obtain porous magnetic composite protein;

[0025] (2) Preparation of Erbium-doped BiOCl powder: In the reactor, add the following composition mass percentage, 4mol / LHNO 3 :720 mL, Er 2 O 3 :15g, heated to dissolve, then add Bi(NO 3 ) 3 :140g, N-(tert-butoxycarbonyl)-D-alanine hydrochloride: 125g, heat at low temperature, temperature between 100~120℃, evaporate water to form viscous colloid, ignite and burn, and make loose erbium Dope...

Embodiment 3

[0028] (1) Preparation of porous magnetic composite protein: In the reactor, add the following composition by mass percentage, deionized water: 72mL, polyvinyl alcohol: 4g, heat and stir to dissolve, cool to room temperature, add protein powder: 10g, nano tetroxide Ferric iron: 5g, disperse ultrasonically for 30 min, add borax: 1.0g, stir and mix evenly, stir, the temperature rises to 65℃, dropwise add mass percent magnesium chloride solution: 9 mL, cool to room temperature, place for 2 h, solidify Liquid separation, washing, and repeated freeze-drying to obtain porous magnetic composite protein;

[0029] (2) Preparation of Erbium-doped BiOCl powder: In the reactor, add the following composition mass percentage, 4mol / LHNO 3 :78mL, Er 2 O 3 :0.5g, heated to dissolve, then add Bi(NO 3 ) 3 :8g, N-(tert-butoxycarbonyl)-D-alanine hydrochloride: 13.5g, heat at low temperature, temperature between 100~120℃, evaporate water, form viscous colloid, ignite and burn, and make loose Erbium do...

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PUM

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Abstract

The invention discloses a preparation method of a porous magnetic compound protein-loaded erbium-doped BiOCl photocatalyst. The preparation method is characterized by comprising the following steps: adopting protein powder and polyvinyl alcohol and adding nano ferroferric oxide to obtain porous magnetic compound protein; preparing erbium-doped BiOCl powder by a combustion method; then in a reactor, adding 68-72% of liquid paraffin and 2-5% of alkylphenol ethoxylates according to composition mass percent, adding 2-5% of erbium-doped BiOCl powder under the condition of vigorous stirring, performing ultrasonic dispersion for 30min, adding 20-25% of porous magnetic compound protein, performing stirring and reaction for 50min, adding 5 times of absolute ethanol in liquid volume, and performingstirring, solid-liquid separation, washing with absolute ethanol and drying to obtain the porous magnetic compound protein-loaded erbium-doped BiOCl photocatalyst. The porous magnetic compound protein-loaded erbium-doped BiOCl photocatalyst has the characteristics of a simple preparation method, good stability, degradability, environmental friendliness and the like; and the catalyst has the characteristics of easy recovery, mild reaction conditions, high catalytic activity, less consumption and the like.

Description

Technical field [0001] The present invention relates to the technical field of the preparation of supported catalysts, in particular to a preparation method of a porous magnetic composite protein-loaded Erbium-doped BiOCl photocatalyst and its application in the degradation of organic pollutants. Background technique [0002] Semiconductor photocatalysis technology, as a new "green chemical method", has been widely studied in energy conversion and environmental remediation applications. Traditional semiconductor photocatalysts such as TiO2 and ZnO have strong oxidizing properties and good light inductivity, and have been widely used in the degradation of various pollutants in water bodies. However, due to the wide band gap (such as TiO 2 The band gap energy is 3.2 eV), and only 4% of the solar spectrum can be utilized, which obviously limits its application. Therefore, the development of new visible light-responsive semiconductor photocatalysts has attracted more and more attenti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J35/00C02F1/30C02F101/30C02F101/34
CPCC02F1/30B01J27/06C02F2101/308C02F2101/345B01J35/33B01J35/39
Inventor 李慧芝卢燕杨春霞
Owner UNIV OF JINAN
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