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Method for synthesizing bismuth trioxide-cuprous oxide nano-composite through mechanical milling thermal treatment two-step method

A nanocomposite, bismuth trioxide technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Problems such as poor crystallinity and easy agglomeration of products achieve the effects of easy industrial production, convenient operation and simple preparation process

Active Publication Date: 2018-06-22
BENGBU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Bi prepared by this method 2 o 3 -Cu 2 The crystallinity of the O complex is not good, and subsequent high-temperature calcination is required to obtain a well-crystallized product
At the same time, this solvothermal method has the disadvantages of cumbersome operation, easy agglomeration of products, and not suitable for large-scale production. Therefore, a simpler and more effective method to prepare Bi 2 o 3 -Cu 2 O complexes, especially nanocomposites with good crystallinity, will be further developed and studied

Method used

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  • Method for synthesizing bismuth trioxide-cuprous oxide nano-composite through mechanical milling thermal treatment two-step method
  • Method for synthesizing bismuth trioxide-cuprous oxide nano-composite through mechanical milling thermal treatment two-step method
  • Method for synthesizing bismuth trioxide-cuprous oxide nano-composite through mechanical milling thermal treatment two-step method

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Experimental program
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Effect test

Embodiment 1

[0019] According to the molar ratio of 2:1:3, weigh 0.01 mole of sodium bismuthate dihydrate, 0.005 mole of basic copper carbonate and 0.015 mole of dihydrate oxalic acid and add 50 zirconia grinding balls with a diameter of 6mm and 8 zirconia grinding balls with a diameter of 10mm. In a 50mL zirconia ball mill jar, the ball mill was continuously milled in a QM-3SP04 planetary high-energy ball mill at 480rpm for 2 hours, and the product obtained from the milling reaction was washed with distilled water, centrifuged and vacuum-dried at 60°C and 0.1Mpa vacuum for 2 hours. hours, the reaction product was obtained.

[0020] Carry out XRD analysis respectively to the reaction product of present embodiment and reaction raw material (see attached figure 1 ),From figure 1 It can be seen that in the XRD spectrum of the reaction product, the characteristic diffraction peaks of the reaction raw materials sodium bismuthate dihydrate and basic copper carbonate are not found, indicating th...

Embodiment 2

[0022] According to the molar ratio of 2:1:3, weigh 0.01 mole of sodium bismuthate dihydrate, 0.005 mole of basic copper carbonate and 0.015 mole of dihydrate oxalic acid and add 50 zirconia grinding balls with a diameter of 6mm and 8 zirconia grinding balls with a diameter of 10mm. In a 50mL zirconia ball mill jar, mill continuously in a QM-3SP04 planetary high-energy ball mill at 480rpm for 2 hours, put the product obtained from the ball mill reaction into a crucible with a lid and calcinate at 450°C for 1 hour, after cooling, use distilled water to grind the product Washing, centrifugation and vacuum drying at 60° C. and 0.1 Mpa vacuum for 2 hours to obtain the final product.

Embodiment 3

[0024]According to the molar ratio of 2:1:3, weigh 0.01 mole of sodium bismuthate dihydrate, 0.005 mole of basic copper carbonate and 0.015 mole of dihydrate oxalic acid and add 50 zirconia grinding balls with a diameter of 6mm and 8 zirconia grinding balls with a diameter of 10mm. In a 50mL zirconia ball mill jar, mill continuously in a QM-3SP04 planetary high-energy ball mill at 480rpm for 2 hours, put the product obtained from the ball mill reaction into a crucible with a lid and calcinate at 450°C for 2 hours, after cooling, use distilled water to grind the product Washing, centrifugation and vacuum drying at 60° C. and 0.1 Mpa vacuum for 2 hours to obtain the final product.

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Abstract

The invention discloses a method for synthesizing bismuth trioxide-cuprous oxide nano-composite through a mechanical milling thermal treatment two-step method. The method comprises the following steps: mixing solid phase raw material sodium bismuthate dihydrate, basic cupric carbonate and oxalic acid dihydrate, performing mechanical milling solid phase reaction to acquire Bi2O2CO3-Cu2(OH)2-2x(CO3)xC2O4 compound precursor; and performing thermal treatment on the precursor to obtain the Bi2O3-CeO2 nano-composite. Solid mixing, the raw material room-temperature milling solid-phase reaction and thermal treatment two-step method are adopted, the preparation process is simple and easy to control, and the agglomeration of product particles can be greatly reduced; an operation of furthermore adding oxidation reducing agent, the template agent and the solvent is avoided, the product purity is improved, the green synthesis requirement of the material is satisfied, and the method is suitable forthe large-scale production.

Description

technical field [0001] The invention belongs to the field of nanomaterials and their preparation, in particular to a Bi 2 o 3 / Cu 2 Preparation method of O nanocomposites. Background technique [0002] Cu 2 As an important p-type semiconductor material, O has a narrow bandgap of only about 2.0eV, so it can be effectively excited by visible light to generate photogenerated carriers, and then trigger photocatalytic reactions. As early as 1998, Cu 2 O has been shown to act as a visible-light photocatalyst to split water into oxygen and hydrogen. In addition, Cu 2 As a photocatalyst, O also has the advantages of non-toxicity and low cost. Therefore, many researchers believe that Cu 2 O will have a good application prospect in environmental governance, and it is a new type of semiconductor photocatalyst with great application potential. 2 The research on the photocatalytic properties of O under visible light conditions has become one of the current research hotspots. But...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/843B01J37/00B01J37/08
CPCB01J23/002B01J23/8437B01J37/00B01J37/086
Inventor 张茂林葛金龙刘伟王传虎高燕
Owner BENGBU COLLEGE
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