Method for preparing surfactant-directed grown superfine bismuth molybdate nano rods

A surfactant, ultra-fine nanotechnology, applied in nanotechnology, chemical instruments and methods, molybdenum compounds, etc., to achieve the effects of high yield, uniform size, and strong controllability of process conditions

Inactive Publication Date: 2012-06-20
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, among transition metal molybdates, there are relatively few literatures on the design and synthesis of bismuth molybdate materials, and there are even fewer literatures on one-dimensional bismuth molybdate nanomaterials that involve a surfactant-directed growth. Therefore, the development of one-dimensional nanomaterials Controlled growth of materials is important and necessary

Method used

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  • Method for preparing surfactant-directed grown superfine bismuth molybdate nano rods
  • Method for preparing surfactant-directed grown superfine bismuth molybdate nano rods
  • Method for preparing surfactant-directed grown superfine bismuth molybdate nano rods

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Embodiment Construction

[0018] At room temperature, the configuration of Bi(NO 3 ) 3 The molar concentration of bismuth nitrate solution is 0.2mol / L, then add CTAB in solution and make its molar concentration in solution be 0.02mol / L, fully stir 10 minutes; Weigh (NH 4 ) 6 Mo 7 o 24 4H 2 O ammonium molybdate solid, add distilled water and stir evenly until the ammonium molybdate is completely dissolved to obtain a uniform clear solution, then dropwise added to the bismuth nitrate solution, fully stirred for 8 minutes; the above reaction precursor is poured into a glass circle Bottom flask, and placed in an atmospheric pressure microwave radiation reactor to react for 30 minutes, the product prepared after the reaction is pure-phase bismuth molybdate ultrafine nanorods, and X-ray diffraction analysis shows that its composition is Bi 2 Mo 3 o 12 . The product was detected by scanning electron microscopy (SEM) and showed that ( figure 1 ) whose main body shape is ultrafine nanorods with uniform...

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Abstract

The invention provides a method for preparing surfactant-directed grown superfine bismuth molybdate nano rods. In the preparation process, bismuth nitrate and ammonium molybdate are used as raw materials, distilled water is used as a solvent, cetyl trimethyl ammonium bromide surfactant is used as a structure directing agent, and a bismuth molybdate functional nano material is prepared in a controllable mode under the action of microwave radiation. The diameter of the superfine bismuth molybdate nano rods is 80 to 100 nanometers, and the length of the nano rods is 400 to 600 nanometers; and the nano rods have smooth surface and uniform size. In a microwave radiation heating system, the material properties of the bismuth nitrate solution and the ammonium molybdate solution and the type of the surfactant play an important role in shape control of the product; and the method has the remarkable advantages of energy conservation, environment friendliness, high yield, high process condition controllability and the like. The superfine bismuth molybdate nano rod material prepared by adopting the technology has regular shape and uniform size, and is expected to provide a necessary technical foundation for the fields of photocatalysis, luminous functional devices and the like in the future.

Description

technical field [0001] The patent of the present invention relates to the field of controllable preparation of inorganic functional nanomaterials, in particular to a preparation method of bismuth molybdate ultrafine nanorods grown by surfactant guidance. technical background [0002] The structure-directing agent interacts with the surface of the crystal nucleus generated in the early stage of the material in the form of adsorption or coordination, so as to achieve the purpose of controlling the microstructure of the nanomaterial. This technology plays an important positive role in the field of design and synthesis of nanomaterials. As a typical representative of surfactants, cetyltrimethylammonium bromide (CTAB) can form a good chemical adsorption with the surface of crystal nuclei during the chemical synthesis process, and then guide the material to grow into nanometer morphology. [0003] Due to the characteristics of crystal structure, metal molybdate can be adsorbed wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82Y40/00
Inventor 孙嬿李春生张志佳王耀祖马雪刚王莉娜马培娟
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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