Sodium bismuth molybdate nanometer material and preparation method thereof

A nanomaterial, sodium bismuth molybdate technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, can solve the problems of high energy consumption, low material purity, high temperature, etc., and achieve mild reaction conditions, simple process, high purity high effect

Active Publication Date: 2017-08-11
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the synthesis of sodium bismuth molybdate is mostly prepared by solid phase melt method or hydrothermal method. The purity of the obtained material is low, the temperature of the preparation process is high, and the energy consumption is high, which does not meet the requirements of environmental protection.

Method used

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  • Sodium bismuth molybdate nanometer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of sodium bismuth molybdate nanomaterial, comprising the following steps:

[0022] 1) 485g (1mol) Bi(NO 3 ) 3 ·5H 2 O was dissolved in 4L ethylene glycol under stirring to obtain a bismuth-containing solution, and then 484g (2mol) Na 2 MoO 4 2H 2 O is dissolved in another part of 4L ethylene glycol with stirring to obtain a molybdenum-containing solution, and then the two are mixed and stirred evenly to obtain a mixed solution;

[0023] 2) Add a mixture of 4L ethanol and 2L deionized water to the mixture, stir the obtained precursor evenly, transfer it to a sealed 20L autoclave, heat up to 200°C and react for 2 hours, then cool the reactor naturally to room temperature, the obtained The product was centrifugally filtered, washed with deionized water, and the obtained powder was dried at 120° C. for 4 hours to obtain sodium bismuth molybdate nanopowder.

[0024] The product obtained in this embodiment is analyzed by X-ray diffraction, and the X...

Embodiment 2

[0026] A preparation method of sodium bismuth molybdate nanomaterial, comprising the following steps:

[0027] 1) 4.85g (10mmol) Bi(NO 3 ) 3 ·5H 2 O was dissolved in 80mL of ethylene glycol under stirring to obtain a bismuth-containing solution, and then 4.84g (20mmol) Na 2 MoO 4 2H 2 O is dissolved in another part of 80mL ethylene glycol with stirring to obtain a molybdenum-containing solution, and then the two are mixed and stirred evenly to obtain a mixed solution;

[0028] 2) Add a mixture of 80mL ethanol and 40mL deionized water to the mixture, stir the obtained precursor evenly, transfer it to a sealed 500mL autoclave, heat up to 120°C for 12 hours, then cool the autoclave to room temperature naturally, and get The product was centrifugally filtered, washed with deionized water, and the obtained powder was dried at 80° C. for 12 hours to obtain sodium bismuth molybdate nanopowder.

[0029] X-ray diffraction analysis of the product obtained in this example shows tha...

Embodiment 3

[0031] A preparation method of sodium bismuth molybdate nanomaterial, comprising the following steps:

[0032] 1) 4.85g (10mmol) Bi(NO 3 ) 3 ·5H 2 O was dissolved in 400mL ethylene glycol under stirring to obtain a bismuth-containing solution, and then 4.84g (20mmol) Na 2 MoO 4 2H 2 O is dissolved in another part of 400mL ethylene glycol with stirring to obtain a molybdenum-containing solution, and then the two are mixed and stirred evenly to obtain a mixed solution;

[0033] 2) Add a mixture of 200mL ethanol and 100mL deionized water to the mixture, stir the obtained precursor evenly, transfer it to a sealed 1.5L autoclave, heat up to 160°C for 4 hours, and then cool the autoclave to room temperature naturally. The obtained product was centrifugally filtered, washed with deionized water, and the obtained powder was dried at 100° C. for 4 hours to obtain bismuth sodium molybdate nanopowder.

[0034] X-ray diffraction analysis of the product obtained in this example shows...

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Abstract

The invention relates to a method for preparing a sodium bismuth molybdate nanometer material. The method comprises a step 1) of dissolving bismuth nitrate in ethylene glycol, and obtaining a bismuth-containing solution; a step 2) of dissolving sodium molybdate in ethylene glycol, and obtaining a molybdenum-containing solution; a step 3) of mixing the bismuth-containing solution obtained in the step 1) with the molybdenum-containing solution obtained in the step 2), and obtaining a mixed liquid; a step 4) of adding a mixture of ethanol and water into the mixed liquid in the step 3), performing uniform mixing and then transferring the mixed liquid into a hydrothermal reaction kettle for solvothermal reaction, and then performing filtration, washing and drying to obtain the sodium bismuth molybdate nanometer material. The ethylene glycol and the ethanol are taken as solvents, and bismuth nitrate and sodium molybdate are taken as raw materials to perform solvothermal reaction to prepare the sodium bismuth molybdate nanometer material through further reaction. A solvent is non-toxic and environmentally friendly, simple in process and mild in reaction condition, and the prepared sodium bismuth molybdate nanometer material is high in purity and has applications in multiple aspects.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a sodium bismuth molybdate nanometer material and a preparation method thereof. Background technique [0002] Sodium bismuth molybdate (NaBi(MoO 4 ) 2 ) is an inorganic scintillation crystal with many excellent properties and important applications, which can be used as the matrix of new rare earth laser crystals. In double tungstate inorganic scintillation crystals, NaBi(MoO 4 ) 2 And its rare earth doped system has high luminous efficiency, high density, fast time response and good radiation resistance. It has important applications in high-energy physics, medicine, petroleum industry and safety supervision and inspection. Due to its fluorescence excitation in the visible light band and insensitivity to neutrons, as well as its stability in extreme environments with large temperature and humidity changes, it has been used as an alternative material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G39/00C01P2002/72C01P2004/64C01P2006/80
Inventor 林志东邹爽付萍陈喆
Owner WUHAN INSTITUTE OF TECHNOLOGY
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