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A kind of copper-doped bismuth phosphate composite material, preparation method and application thereof

A composite material, bismuth phosphate technology, applied in chemical instruments and methods, physical/chemical process catalysts, water/sludge/sewage treatment, etc. and other problems, to achieve the effect of excellent photocatalytic performance, low cost and convenient operation

Active Publication Date: 2022-03-18
宿州学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bismuth phosphate-based photocatalysts have shortcomings such as low quantum efficiency and low solar energy utilization, which restrict their practical application in photocatalytic technology. Current research shows that by doping bismuth salt photocatalysts, it can make its optical absorption properties Significantly enhanced and improved its photocatalytic activity. At present, the research on the method of preparing photocatalysts by doping bismuth phosphate with metal elements is not very sufficient, and copper doped bismuth phosphate is relatively rare.

Method used

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  • A kind of copper-doped bismuth phosphate composite material, preparation method and application thereof
  • A kind of copper-doped bismuth phosphate composite material, preparation method and application thereof
  • A kind of copper-doped bismuth phosphate composite material, preparation method and application thereof

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Embodiment 1

[0029] A preparation method of copper-doped bismuth phosphate composite material, comprising the following steps:

[0030] S1. Add bismuth nitrate and copper nitrate to 30 mL of deionized water, stir for 30 min, then add sodium phosphate, and stir for 30 min to obtain a reaction solution;

[0031] The mol ratio of described bismuth nitrate, copper nitrate and sodium phosphate consumption is 4:3:4;

[0032] S2. Add sodium hydroxide to the reaction solution obtained in S1, adjust the pH value to 7, transfer it to a reaction kettle and seal it, and then react at 180° C. for 24 hours. After the reaction, naturally cool to room temperature, wash, separate, and dry. That is, a copper-doped bismuth phosphate composite material is obtained.

Embodiment 2

[0034] A preparation method of copper-doped bismuth phosphate composite material, comprising the following steps:

[0035] S1. Add bismuth nitrate and copper nitrate to 30 mL of deionized water, stir for 30 min, then add sodium phosphate, and stir for 30 min to obtain a reaction solution;

[0036] The mol ratio of described bismuth nitrate, copper nitrate and sodium phosphate consumption is 1:1:1;

[0037] S2. Add sodium hydroxide to the reaction solution obtained in S1, adjust the pH value to 7, transfer it to a reaction kettle and seal it, and then react at 180° C. for 24 hours. After the reaction, naturally cool to room temperature, wash, separate, and dry. That is, a copper-doped bismuth phosphate composite material is obtained.

Embodiment 3

[0039] A preparation method of copper-doped bismuth phosphate composite material, comprising the following steps:

[0040] S1. Add bismuth nitrate and copper nitrate to 30 mL of deionized water, stir for 30 min, then add sodium phosphate, and stir for 30 min to obtain a reaction solution;

[0041] The mol ratio of described bismuth nitrate, copper nitrate and sodium phosphate consumption is 2:1:2;

[0042] S2. Add sodium hydroxide to the reaction solution obtained in S1, adjust the pH value to 7, transfer it to a reaction kettle and seal it, and then react at 180° C. for 24 hours. After the reaction, naturally cool to room temperature, wash, separate, and dry. That is, a copper-doped bismuth phosphate composite material is obtained.

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Abstract

The invention discloses a copper-doped bismuth phosphate composite material and a preparation method thereof, comprising the following steps: S1, adding bismuth nitrate and copper nitrate into deionized water, stirring evenly, adding sodium phosphate, stirring for 20-50 minutes, and obtaining a reaction solution; S2, adding a pH regulator to the reaction solution obtained in S1, adjusting the pH value to 4-7, and then reacting at 160-200°C for 20-36h, after the reaction, naturally cool to room temperature, wash, separate, and dry , that is, a copper-doped bismuth phosphate composite material is obtained. In the invention, the photocatalytic degradation performance of the composite material is studied by regulating the pH, the reaction time and the molar ratio of reactants in the reaction process. The composite material synthesized by the invention has excellent photocatalytic degradation performance, and the degradation rate of the methylene blue can reach 88% within 60 minutes, and the degradation rate can reach as high as 90% within 90 minutes. The preparation method of the invention is simple and convenient to operate and easy to realize.

Description

technical field [0001] The invention belongs to the technical field of catalyst material preparation, and in particular relates to a copper-doped bismuth phosphate composite material, a preparation method and an application thereof. Background technique [0002] Due to its special structural characteristics and high chemical stability, bismuth phosphate can not only be used as photocatalyst, luminescent matrix material, organic reaction catalyst, etc., but also has potential application prospects in heat resistance and friction resistance. Bismuth phosphate has three crystal forms: monoclinic, monoclinic monazite and hexagonal. Hexagonal bismuth phosphate, as a luminescent host material doped with rare earth ions, has attracted much attention from researchers in the development of phosphors. Bismuth phosphate with monoclinic monazite structure has become a new star in the field of photocatalysis. However, bismuth phosphate-based photocatalysts have shortcomings such as low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/186C02F1/30C02F101/30
CPCB01J27/186C02F1/30C02F2101/308B01J35/39
Inventor 史洪伟周丹红卓馨张克营朱军
Owner 宿州学院