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Silver molybdate nanofiber material and preparation method thereof

A technology of nanofibers and silver molybdate, applied in botany equipment and methods, nanotechnology, nanotechnology, etc., can solve the problems of complex operation, uneven loading particle size, low loading capacity, etc., and achieve uniform shape and particle size. The effect of uniform diameter and distribution and large load capacity

Active Publication Date: 2021-04-30
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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  • Silver molybdate nanofiber material and preparation method thereof
  • Silver molybdate nanofiber material and preparation method thereof
  • Silver molybdate nanofiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare the silver molybdate nanofiber material under light-shielding conditions, comprising the following steps:

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

[0041] (2) Weigh 0.169g of silver nitrate, dissolve it in 35ml of deionized water, then add the silver nitrate solution dropwise into the vigorously stirred peroxymolybdic acid-ethanol suspension, and keep stirring for 30min to obtain the precursor solution ;

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

[0043] (4) After the reaction, the system was naturally cooled, the product was centrifuged, washed 3 times with ethanol and 2 times with acetone, and then vacuum-dried at 45° C. for 24 hours to obtain the product.

[0044] combine Figure 1~3 and Figure 11 It...

Embodiment 2

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

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

Embodiment 3

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

[0050] combine Figure 7 and Figure 11 It can be seen that the main component of the silver molybdate nanomaterials prepared in this embodiment is Ag 6 Mo 10 o 33 , and contains a small amount of Ag 2 MoO 4 、Ag 2 Mo 4 o 13 Components, the length of the nanofiber is about 20 μm, and the width is below 100nm. The scanning electron microscope image shows that there are a large number of large-sized block products in the prepared product. The surface of the material is 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 is increased, which affects the...

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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 a high aspect ratio and Ag nanoparticles uniformly growing on the silver molybdate fibrous nanocrystals. According to the preparation method, an optimized homogeneous precipitation method is adopted, solid peroxy-molybdic acid with superoxide bonds is used as a molybdenum source for the first time to generate one-dimensional nanofibers, the defects of a traditional preparation method are overcome, and the prepared silver molybdate nanofibers are uniform in morphology, large in surface silver nanoparticle loading capacity and uniform in particle size and distribution.

Description

technical field [0001] The invention relates to the technical field of inorganic nanometer materials, 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 And silver molybdate hydrate and other compounds. This type of material is composed of silver ions with antibacterial activity and molybdate ions that are non-toxic to the human body. This type of compound has a special "sustained release" mechanism in the aqueous phase solution. Can release Ag 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 characteristics of molybdate ion make it polymerize to different degrees under different conditions (such as pH value, dispersion system, etc.). The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D06M11/83B01J35/06B01J23/68A01N59/16A01P1/00A01P3/00B82Y40/00B82Y30/00
CPCD01F9/08D06M11/83B01J23/686A01N59/16B82Y40/00B82Y30/00B01J35/39B01J35/58
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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