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A kind of preparation method of supported type praseodymium doped biocl photocatalyst

A photocatalyst and load-type technology, which is applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., to achieve good absorption, good stability, and good physical and chemical stability.

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

[0024] (1) Pretreatment of reed powder: In the reactor, separately add, deionized water: 60 mL, concentrated hydrochloric acid: 19 mL, stir evenly, cool to room temperature, 30% by mass hydrogen peroxide: 7 mL, dissolve, Then add reed powder: 10g, soak for 12h at room temperature, then boil for 20min, wash with deionized water to neutrality after cooling, separate solid and liquid, and dry to obtain pretreated reed powder;

[0025] (2) Preparation of magnetic reed powder: In the reactor, add N-methyl morpholine oxide: 58 mL, deionized water: 8 mL, pretreatment reed powder: 18 g, ultrasonic dispersion, add oxalic acid: 6 g, temperature rise The temperature is kept at 100℃, stirred and refluxed for 7 hours, and then add nano ferroferric oxide: 3g, stir evenly, the temperature drops to 70±2℃, spray into the coagulation liquid, separate solid and liquid, wash and dry to obtain magnetic reed powder ;

[0026] (3) Preparation of solution A: In the reactor, add separately, deionized wate...

Embodiment 2

[0030] (1) Pretreatment of reed powder: In the reactor, add deionized water: 57 mL, concentrated hydrochloric acid: 21 mL, stir well, cool to room temperature, 30% hydrogen peroxide: 5 mL, dissolve, Then add reed powder: 12g, soak for 12h at room temperature, then boil for 20min, wash with deionized water to neutrality after cooling, separate solid and liquid, and dry to obtain pretreated reed powder;

[0031] (2) Preparation of magnetic reed powder: In the reactor, add N-methyl morpholine oxide: 55 mL, deionized water: 10 mL, pretreatment reed powder: 16 g, ultrasonic dispersion, add oxalic acid: 8 g, temperature rise Constant temperature at 100℃, stirring and refluxing reaction for 6h, then add nano ferroferric oxide: 4g, stir evenly, temperature drop to 70±2℃, spray into coagulation liquid, separate solid and liquid, wash and dry to obtain magnetic reed powder ;

[0032] (3) Preparation of solution A: In the reactor, add separately, deionized water: 66 mL, concentrated hydrochl...

Embodiment 3

[0036] (1) Pretreatment of reed powder: In the reactor, separately add, deionized water: 62 mL, concentrated hydrochloric acid: 17 mL, stir evenly, cool to room temperature, mass percentage concentration of 30% hydrogen peroxide: 9 mL, dissolve, Then add reed powder: 8g, soak at room temperature for 12 hours, then boil for 20 minutes, wash with deionized water to neutrality after cooling, separate solid and liquid, and dry to obtain pretreated reed powder;

[0037] (2) Preparation of magnetic reed powder: In the reactor, add N-methyl morpholine oxide: 59 mL, deionized water: 6 mL, pretreatment reed powder: 20 g, ultrasonic dispersion, add oxalic acid: 4 g, temperature rise The temperature is kept at 100℃, stirred and refluxed for 8h, then add nano ferroferric oxide: 3g, stir evenly, the temperature drops to 70±2℃, spray into the coagulation liquid, separate solid and liquid, wash and dry to obtain magnetic reed powder ;

[0038] (3) Preparation of solution A: In the reactor, separ...

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PUM

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Abstract

The invention discloses a preparation method of a supported praseodymium doped BiOCl photocatalyst. The preparation method is characterized by comprising the following steps: dissolving reed powder byadopting N-methyl morpholine oxide; adding nano ferroferric oxide to prepare magnetic reed powder; adding the following component into a reactor according to the mass percent: 70 to 75 percent of a magnetic reed powder suspension solution; stirring and dropwise adding 25 to 30 percent of a praseodymium and Bi(NO3)3 solution; raising the temperature to 50+ / -2 DEG C and keeping the temperature; stirring and reacting for 30min; dropwise adding ammonia water to regulate the pH (Potential of Hydrogen) of the system to be 9.5; transferring a mixture into a reaction kettle; sealing, raising the temperature to 130+ / -2 DEG C and keeping the temperature; reacting for 4 to 6h and cooling to room temperature; carrying out solid-liquid separation and washing with de-ionized water; drying to obtain thesupported praseodymium doped BiOCl photocatalyst. The preparation method disclosed by the invention has the characteristics of simplicity, good stability, degradability, environment friendliness andthe like; the catalyst is easy to recycle and has the characteristics of moderate reaction conditions, high catalytic activity, less dosage and the like.

Description

Technical field [0001] The present invention relates to the technical field of supported catalyst preparation, in particular to a preparation method of a supported praseodymium-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 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 TiO2 band gap energy of 3.2 eV), only The use of ultraviolet light, which accounts for only 4% of the solar spectrum, obviously limits its application. Therefore, the development of new visible light-responsive semiconductor photocatalysts has attracted more and more attention. In recent years, bism...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J32/00B01J31/28B01J37/12B01J37/10C02F1/30C02F101/30
CPCC02F1/30B01J27/06B01J31/28B01J37/10B01J37/12C02F2305/10C02F2101/308B01J35/33B01J35/39
Inventor 李慧芝翟玉博李冬梅
Owner UNIV OF JINAN