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A kind of bismuth/non-stoichiometric ratio Oliveris compound nanocomposite material and its preparation method and application

A non-stoichiometric ratio and nano-composite technology, applied in the fields of chemical engineering, nano-materials, and functional materials, to achieve uniform appearance, large-scale production, and avoid secondary pollution

Active Publication Date: 2020-05-22
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the method of directional separation of photogenerated carriers by metal loading to improve the photocatalytic performance of materials has been reported a lot, but there is no synthesis method to generate Bi composite non-stoichiometric Oliviers type oxide composite materials by NaOH regulation in alcohol phase system. was reported

Method used

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  • A kind of bismuth/non-stoichiometric ratio Oliveris compound nanocomposite material and its preparation method and application
  • A kind of bismuth/non-stoichiometric ratio Oliveris compound nanocomposite material and its preparation method and application
  • A kind of bismuth/non-stoichiometric ratio Oliveris compound nanocomposite material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A kind of bismuth / non-stoichiometric ratio Oliveris compound nanocomposite material, its preparation method comprises the steps:

[0029] Dissolve 4mmol of bismuth nitrate pentahydrate and 2mmol of sodium molybdate in 20mL of ethylene glycol (EG), disperse evenly by ultrasonic, then place the resulting solution on a stirrer, and add 20mL of ethanol and 10mL of hydrogen into the mixed solution while stirring. Sodium oxide (2mol / L), stirred for 30min to mix evenly, then put the resulting reaction solution in a reaction kettle, reacted at 160°C for 12h, then cooled to room temperature, the obtained product was washed by centrifugation to remove residual impurities, and heated at 60°C After drying for 12 hours, bismuth / non-stoichiometric bismuth molybdate (Bi / Bi 3.64 Mo 0.36 o 6.55 ) nanocomposites.

[0030] The product obtained in the present embodiment adopts Bruker axs D8 type X-ray diffraction analyzer (XRD) to carry out X-ray diffraction analysis, the results are sh...

Embodiment 2

[0034] A kind of bismuth / non-stoichiometric ratio Oliveris compound nanocomposite material, its preparation method comprises the steps:

[0035] Dissolve 4mmol of bismuth nitrate pentahydrate and 2mmol of sodium molybdate in 20mL of ethylene glycol (EG), disperse evenly by ultrasonic, then place the resulting solution on a stirrer, and add 10mL of ethanol and 8mL of hydrogen into the mixed solution while stirring. Sodium oxide (2mol / L), stirred for 30min to mix evenly, then put the obtained reaction solution in a reaction kettle, reacted at 160°C for 14h, then cooled to room temperature, and the obtained product was centrifuged to remove residual impurities, and heated at 60°C After drying for 12 hours, bismuth / non-stoichiometric bismuth molybdate (Bi / Bi 3.64 Mo 0.36 o 6.55 ) nanocomposites.

[0036] Figure 4 It is to adopt Bruker axs D8 type X-ray diffraction analyzer (XRD) to test the XRD spectrum of the product obtained in this embodiment. As can be seen from the spec...

Embodiment 3

[0039] A kind of bismuth / non-stoichiometric ratio Oliveris compound nanocomposite material, its preparation method comprises the steps:

[0040] Dissolve 2mmol of bismuth nitrate pentahydrate and 1mmol of sodium molybdate in 10mL of ethylene glycol (EG), disperse evenly by ultrasonic, then place the resulting solution on a stirrer, and add 10mL of ethanol and 2mL of hydrogen into the mixed solution while stirring. Potassium oxide (4mol / L), stirred for 30min to mix evenly, then put the resulting reaction solution in a reaction kettle, reacted at 140°C for 16h, then cooled to room temperature, the obtained product was washed by centrifugation to remove residual impurities, and heated at 60°C After drying for 12 hours, bismuth / non-stoichiometric bismuth molybdate (Bi / Bi 3.64 Mo 0.36 o 6.55 ) nanocomposites.

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Abstract

The invention discloses a bismuth / non-stoichiometric biorivelis compound nanocomposite material and its preparation method and application. The composite material includes Bi / Bi 3.64 Mo 0.36 O 6.55 and Bi / Bi 3.84 W 0.16 O 6.24 . For the first time, the present invention uses sodium hydroxide to control the reducibility of the resulting reaction system, and controllably synthesizes non-stoichiometric bismuth molybdate nanocomposites with different compound ratios of bismuth composite cubic phases through the solvothermal method. The resulting product has a uniform morphology and a relatively small particle size. Small, which avoids problems such as uneven morphology or large particle size of nanoparticles produced by some methods; by adjusting the reducibility of the system through alkali, there is no need to add additional reducing substances and surfactants, avoiding the occurrence of secondary pollution , simplifies the synthesis process, is green and environmentally friendly, effectively reduces production costs, and can achieve large-scale production of products.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering, functional materials and nanomaterials, and in particular relates to a bismuth composite non-stoichiometric ratio Olivieris compound nanocomposite material and its preparation method and application. Background technique [0002] Due to its special physical and chemical properties, bismuth-based materials are widely used in various fields such as electronic ceramic materials, electrolyte materials, photoelectric materials, sensors, microelectronic components, high-temperature superconducting materials, catalysts, ferroelectric materials, etc., and are also used in fireproof materials, High refractive index glass, nuclear engineering glass manufacturing and nuclear reactor fuel and other fields. Among them, a series of Oliviers-type oxides have gradually attracted attention, and this type of compound consists of perovskites [A n-1 B n o 3n+1 ] layers and fluorite layers are arrang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/31C02F1/30C02F101/30C02F101/34
CPCC02F1/30B01J23/31B01J37/10B01J37/16C02F2101/345C02F2101/30C02F2305/10B01J35/50B01J35/40B01J35/39
Inventor 陈嵘赵帅赵慧平杨浩
Owner WUHAN INSTITUTE OF TECHNOLOGY