Preparation method of BiPO4 nano photocatalyst

A nano-photocatalyst, mixed solution technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of poor adsorption performance, low dispersion, easy agglomeration, etc., to improve photochemical performance , good particle dispersibility and interface properties, the effect of improving monodispersity

Inactive Publication Date: 2019-08-02
JIANGHAN UNIVERSITY
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Problems solved by technology

[0005] The invention provides a BiPO 4 The preparation method of nano photocatalyst solves or partially solves the technical problems of poor adsorption performance caused by low specific surface area of ​​bismuth phosphate semiconductor photocatalyst in the prior art and low dispersion caused by easy agglomeration

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  • Preparation method of BiPO4 nano photocatalyst
  • Preparation method of BiPO4 nano photocatalyst
  • Preparation method of BiPO4 nano photocatalyst

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preparation example Construction

[0021] see figure 1 , a kind of BiPO provided by the embodiment of the present invention 4 The preparation method of nano photocatalyst comprises the following steps:

[0022] Step S1, adding bismuth salt and sodium phosphate into deionized water, and stirring to obtain a first mixed solution.

[0023] Step S2, adjusting the pH value of the first mixed solution to 3-5 to obtain a second mixed solution.

[0024] Step S3, adding an aqueous solution of alcohol ether carboxylate AEC to the second mixed solution to obtain a precursor bismuth phosphate suspension.

[0025] Step S4, put the precursor bismuth phosphate suspension into the hydrothermal reactor for reaction, after the reaction is completed, BiPO 4 Nanophotocatalyst.

[0026] Specific embodiments of the present application Since the bismuth salt and sodium phosphate are added into the deionized water and stirred to obtain the first mixed solution, the pH value of the first mixed solution is adjusted to 3-5 to obtain ...

Embodiment 1

[0044] Add 0.8g of bismuth salt (bismuth sulfate) and 1.2g of sodium phosphate into the beaker, then add 200ml of deionized water, and magnetically stir at room temperature. During this period, the pH value of the solution was adjusted to 3 by adding nitric acid or sodium hydroxide, and then 1 g of an aqueous solution of alcohol ether carboxylate AEC was added. The final concentration of alcohol ether carboxylate AEC was 25 g / L to obtain a precursor bismuth phosphate suspension.

[0045] Subsequently, 100 ml of the precursor bismuth phosphate suspension was put into a 200 ml Teflon hydrothermal reaction kettle, and reacted at 160° C. for 36 hours. Then take it out and cool to room temperature under natural conditions to obtain BiPO 4 Nanophotocatalyst.

[0046] BiPO 4 The nano-photocatalyst was washed several times with deionized water, and dried in a vacuum drying oven at 60°C for 24 hours to obtain BiPO 4 Nano photocatalyst powder. Obtained BiPO 4 Nano photocatalyst pow...

Embodiment 2

[0050] 0.8 g of bismuth salt (bismuth nitrate) and 1.2 g of sodium phosphate were added to the beaker, followed by 150 ml of deionized water, and magnetically stirred at room temperature. During this period, the pH value of the solution was adjusted to 5 by adding nitric acid or sodium hydroxide, and then 0.25 g of an aqueous solution of alcohol ether carboxylate AEC was added, and its final concentration was 5 g / L.

[0051] Subsequently, 100 ml of the precursor bismuth phosphate suspension was put into a 200 ml Teflon hydrothermal reaction kettle, and reacted at 180° C. for 42 hours. Then take it out and let it cool down to room temperature naturally. The material was then washed several times with deionized water, and dried in a vacuum drying oven at 60 °C for 24 hours to obtain BiPO 4 Nano photocatalyst powder. Obtained BiPO 4 Nanophotocatalyst powder compared with BiPO not modified with alcohol ether carboxylate AEC 4 Powder, with high specific surface area and good ph...

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Abstract

The invention discloses a preparation method of a BiPO4 nano photocatalyst and belongs to the technical field of preparation of inorganic nano photocatalysis materials. The preparation method of the BiPO4 nano photocatalyst comprises steps as follows: bismuth salt and sodium phosphate are added to deionized water and stirred to obtain a first mixed solution; the pH value of the first mixed solution is adjusted to 1-6, and a second mixed solution is obtained; an AEC (alcohol ether carboxylate) water solution is added to the second mixed solution, and a precursor bismuth phosphate suspension isobtained; the precursor bismuth phosphate suspension is put in a hydrothermal reactor for a reaction, after the reaction is completed, and the BiPO4 nano photocatalyst is obtained. By means of the preparation method of the BiPO4 nano photocatalyst, obtained BiPO4 nanoparticles have good particle dispersity and interface characteristics, and the photochemical property of the BiPO4 nano photocatalyst is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic nano photocatalytic materials, in particular to a BiPO 4 Preparation method of nano photocatalyst. Background technique [0002] In recent years, due to the continuous development of social economy, social production activities have become increasingly frequent, and environmental pollution has become increasingly serious. The use of various methods to deal with environmental pollution has attracted widespread attention from all walks of life. Among them, semiconductor photocatalysis technology is favored by researchers and engineers due to its application advantages such as low energy consumption, low cost and no secondary pollution. Since materials for photocatalytic degradation of pollutants have been widely reported, inorganic semiconductors have become the most researched and discussed class of photocatalytic materials, such as titanium dioxide, zinc oxide, tin dioxide, cadm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18B01J37/10
CPCB01J27/1815B01J35/004B01J37/0018B01J37/10
Inventor 汪畅杨玉莹李平灯郑琦
Owner JIANGHAN UNIVERSITY
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