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A kind of p-doped biocl visible light catalyst and preparation method thereof

A visible light and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of unclear BiOCl, achieve enhanced visible light absorption range, good application prospects, and simple preparation process Effect

Active Publication Date: 2022-02-08
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether P-doped BiOCl can improve the catalytic performance of BiOCl and the degree of improvement is still unclear to researchers in this field.

Method used

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  • A kind of p-doped biocl visible light catalyst and preparation method thereof
  • A kind of p-doped biocl visible light catalyst and preparation method thereof
  • A kind of p-doped biocl visible light catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0041] In this embodiment, a method for preparing a P-doped BiOCl visible light catalyst, in parts by weight, comprises the following steps:

[0042] (1) 2.425g of Bi(NO 3 ) 3 ·5H 2 0 was added in 40ml ethylene glycol, fully stirred to obtain a bismuth nitrate suspension; 0.37275g KCl was added to 10ml deionized water, stirred and dissolved to obtain a potassium chloride solution;

[0043] (2) Mix the bismuth nitrate suspension obtained in step (1) with potassium chloride solution, and add NaH 2 PO 2 ·H 2 After O is used as the phosphorus source, adjust the pH of the mixed solution to 3, stir at least 30min to the solution pH value no longer changes, as the reaction solution; wherein, the phosphorus source addition is based on the molar weight of its phosphorus element, Bi(NO 3 ) 3 ·5H 2 O:P=10:1;

[0044] (3) React the reaction solution obtained in step (2) at 180°C for 24 hours. After the time is up, cool it down to room temperature naturally, wash it with water and ...

Embodiment 2

[0047] In this embodiment, a method for preparing a P-doped BiOCl visible light catalyst, in parts by weight, comprises the following steps:

[0048] (1) 2.425g of Bi(NO 3 ) 3 ·5H 2 0 was added in 40ml ethylene glycol, fully stirred to obtain a bismuth nitrate suspension; 0.37275g KCl was added to 10ml deionized water, stirred and dissolved to obtain a potassium chloride solution;

[0049] (2) Mix the bismuth nitrate suspension obtained in step (1) with potassium chloride solution, and add NaH 2 PO 2 ·H 2 After O is used as the phosphorus source, adjust the pH of the mixed solution to 3, stir at least 30min to the solution pH value no longer changes, as the reaction solution; wherein, the phosphorus source addition is based on the molar weight of its phosphorus element, Bi(NO 3 ) 3 ·5H 2 O:P=20:1;

[0050] (3) React the reaction solution obtained in step (2) at 180°C for 24 hours. After the time is up, cool it down to room temperature naturally, wash it with water and ...

Embodiment 3

[0053] In this embodiment, a method for preparing a P-doped BiOCl visible light catalyst, in parts by weight, comprises the following steps:

[0054] (1) 2.425g of Bi(NO 3 ) 3 ·5H 2 0 was added in 40ml ethylene glycol, fully stirred to obtain a bismuth nitrate suspension; 0.37275g KCl was added to 10ml deionized water, stirred and dissolved to obtain a potassium chloride solution;

[0055] (2) Mix the bismuth nitrate suspension obtained in step (1) with potassium chloride solution, and add NaH 2 PO 2 ·H 2 After O is used as the phosphorus source, adjust the pH of the mixed solution to 3, stir at least 30min to the solution pH value no longer changes, as the reaction solution; wherein, the phosphorus source addition is based on the molar weight of its phosphorus element, Bi(NO 3 ) 3 ·5H 2 O:P=8:1;

[0056] (3) React the reaction solution obtained in step (2) at 180°C for 24 hours. After the time is up, cool it down to room temperature naturally, wash it with water and e...

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Abstract

The invention provides a P-doped BiOCl visible light catalyst and a preparation method thereof. In the method, a bismuth nitrate suspension is mixed with a potassium chloride solution, and after adding a phosphorus source, the pH of the mixed solution is adjusted to 2.5-3.5 as a reaction solution, Prepared by reacting at 160℃~180℃ for 20h~24h, wherein the phosphorus source is H 3 PO 4 , NaH 2 PO 2 ·H 2 O, NaH 2 PO 4 and Na 3 PO 4 any of them. In the present invention, a P-doped BiOCl visible light catalyst is synthesized and prepared by a one-step hydrothermal method by selecting a limited doping phosphorus source and a doping ratio. The visible light activity of the catalyst can reach 2.73 times that of the BiOCl photocatalyst, and the preparation method and process are simple. , has excellent application prospects.

Description

technical field [0001] The invention belongs to the technical field of preparation of visible light catalytic materials, in particular to a P-doped BiOCl visible light catalyst and a preparation method thereof, which are mainly used in the technical direction of water treatment in the field of environmental protection. Background technique [0002] Energy and environmental issues are two major challenges facing the sustainable development of human society. Using sunlight as an energy source to remove environmental pollutants through photocatalytic methods is expected to become an important technology to meet the challenges. The core of photocatalytic technology is photocatalyst. Bismuth oxychloride (BiOCl) is a class of [Bi 2 o 2 ] 2+ layer and Cl - Photocatalysts composed of alternating layers have received extensive attention because of their wide sources, low price, suitable band gap, good stability, and easy modification. [0003] However, BiOCl is an ultraviolet l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/186B01J37/10C01G29/00C02F1/30C02F101/38C02F101/34
CPCB01J27/186B01J37/10C01G29/00C02F1/30C02F2101/38C02F2101/34C02F2305/10C01P2002/72C01P2004/03C01P2004/04C01P2002/84C01P2006/60B01J35/39
Inventor 岑望来曹晋妍刘勇军楚英豪李建军
Owner SICHUAN UNIV
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