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Copper-doped bismuth phosphate composite material, and preparation method and application thereof

A composite material, bismuth phosphate technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of restricting the practical application of photocatalytic technology, low solar energy utilization, not very sufficient, etc. , to achieve the effect of excellent photocatalytic performance, low cost and convenient operation

Active Publication Date: 2019-09-13
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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  • Copper-doped bismuth phosphate composite material, and preparation method and application thereof
  • Copper-doped bismuth phosphate composite material, and preparation method and application thereof
  • Copper-doped bismuth phosphate composite material, and 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. The preparation method comprises the following steps: S1, adding bismuth nitrate and copper nitrate to deionized water, performing stirring to reach uniformity, adding sodium phosphate, and performing stirring for 20-50 min to obtain a reaction solution; and S2, adding a pH adjuster to thereaction solution obtained in step S1 to adjust the pH value to 4-7, carrying out a reaction at 160-200 DEG C for 20-36 h, naturally cooling the obtained solution to room temperature after the reaction is finished, and washing, separating and drying the obtained reaction product to obtain the copper-doped bismuth phosphate composite material. The photocatalytic degradation performance of the composite material is studied by adjusting the pH value, the reaction time and the molar ratio of the reactants in the reaction process. The composite material synthesized in the invention has an excellent photocatalytic degradation performance, and allows the degradation rate to reach 88% when applied to the catalytic degradation of methylene blue for 60 min and the degradation rate to reach up to 90% when acting for 90 min. The preparation method of the invention is simple to operate, and is 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 Applications(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
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