A kind of silver molybdate nanofiber material and preparation method thereof

A nanofiber, silver molybdate technology, applied in the fields of botanical equipment and methods, fiber processing, nanotechnology, etc., can solve the problems of uneven particle size, low load, complicated operation, etc., and achieve uniform particle size and distribution. , The effect of large load and uniform appearance

Active Publication Date: 2022-06-10
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It is difficult to obtain products with uniform morphology by the commonly used methods for preparing silver molybdate nanofibers, and there are no nanoscale silver particles on the surface of the nanofibers prepared by the general method. Although it can be loaded by photodeposition, this method There are disadvantages such as uneven loading particle size, low loading capacity, and complicated operation

Method used

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  • A kind of silver molybdate nanofiber material and preparation method thereof
  • A kind of silver molybdate nanofiber material and preparation method thereof
  • A kind of silver molybdate nanofiber material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The preparation of silver molybdate nanofiber material under dark conditions includes the following steps:

[0040] (1) Weigh 0.178g of solid peroxymolybdic acid and place it in a beaker, add 100ml of ethanol, ultrasonically and continue stirring for 3h to obtain a uniform orange-yellow peroxymolybdic acid-ethanol suspension;

[0041] (2) take by weighing silver nitrate 0.169g, dissolve it in 35ml deionized water, then add the silver nitrate solution dropwise to the peroxymolybdic acid-ethanol suspension under vigorous stirring, continue stirring for 30min, obtain the precursor solution ;

[0042] (3) Transfer the precursor solution into the flask, continue the oil bath at 85°C and stir vigorously for 24h;

[0043] (4) After the reaction, the system was cooled naturally, the product was centrifuged, washed three times with ethanol and twice with acetone, and then vacuum-dried at 45° C. for 24 hours to obtain the product.

[0044] combine Figures 1 to 3 and Figure ...

Embodiment 2

[0046] The preparation method of the silver molybdate nanofiber material is the same as that in Example 1, except that the n-butanol used in step (1) is changed to ethanol.

[0047] combine Figures 4 to 6 and Figure 11 It can be seen that the main component of the material prepared in this example is Ag 2 MoO 4 , contains a small amount of Ag 6 Mo 10 O 33 , Ag 2 Mo 2 O 7 The silver molybdate nanofiber material is provided with uniformly distributed nano-silver particles on the surface of the material, the length of the fiber is about 5 μm, the width is between 50-100 nm, and the particle size of the nano-silver particle is 5-25 nm.

Embodiment 3

[0049] The preparation method of the material is the same as that in Example 1, except that 35 ml of deionized water used in step (2) is changed to 45 ml of deionized water.

[0050] combine Figure 7 and Figure 11 It can be seen that the main component of the silver molybdate nanomaterial prepared in this example is Ag 6 Mo 10 O 33 , and contains a small amount of Ag 2 MoO 4 , Ag 2 Mo 4 O 13 The length of the nanofibers is about 20 μm and the width is less than 100 nm. The scanning electron microscope image shows that there are a lot of large-sized bulk products in the obtained product, and the surface of the material is relatively smooth and does not have nano-silver particles.

[0051] The reason for this result may be because: with the increase of the amount of deionized water in the reaction system, the dissolution rate of the reaction raw materials is accelerated, and the concentration of the raw materials in the reaction system increases, which affects the anis...

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Abstract

The invention provides a silver molybdate nanofiber material and a preparation method thereof. The silver molybdate nanofiber material provided by the invention is composed of silver molybdate fibrous nanocrystals with high aspect ratio and Ag nanoparticles uniformly grown on the silver molybdate fibrous nanocrystals. The present invention adopts an optimized homogeneous precipitation method, uses solid peroxymolybdic acid with superoxide bonds as a molybdenum source for the first time, and generates one-dimensional nanofibers, which overcomes the defects of traditional preparation methods, and the morphology of the prepared silver molybdate nanofibers is Uniform, the loading capacity of silver nanoparticles on the surface is large, and the particle size and distribution are uniform.

Description

technical field [0001] The invention relates to the technical field of inorganic nanomaterials, in particular to a silver molybdate nanofiber material and a preparation method thereof. Background technique [0002] Silver molybdate is a general term for a class of silver molybdate materials, including Ag 2 MoO 4 , Ag 2 Mo 2 O 7 , Ag 2 Mo 4 O 13 , Ag 6 Mo 10 O 33 As well as various compounds such as silver molybdate hydrate, this type of material is composed of silver ions with antibacterial activity and molybdate ions that are non-toxic to the human body. These compounds have a special "slow release" mechanism in aqueous solution. Ag can be released slowly + ions and keep their concentration in a low range, so they are widely used in the development of inorganic antibacterial materials. [0003] The oxometalate properties of molybdate ions make it possible to polymerize to different degrees under different conditions (such as pH value, dispersion system, etc.). T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D06M11/83B01J35/06B01J23/68A01N59/16A01P1/00A01P3/00B82Y40/00B82Y30/00
CPCD01F9/08D06M11/83B01J35/06B01J35/004B01J23/686A01N59/16B82Y40/00B82Y30/00
Inventor 方奕文丁客鑫李伟可汤晓雯谢桐罗昀皓宋一兵
Owner SHANTOU UNIV
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