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Method of preparing nano tungsten trioxide from microemulsion

A nano-tungsten trioxide and micro-emulsion technology, applied in the field of nano-materials, can solve the problems of high price of phenanthrene ionic surfactant, poor versatility of micro-emulsion system, and influence on popularization and use, and achieve narrow particle size distribution range, Conducive to full use and strong versatility

Inactive Publication Date: 2008-09-10
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phenanthrene ionic surfactant used is expensive, difficult to purchase, and the production cost is high. The prepared microemulsion system has poor versatility, which affects popularization and use.

Method used

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  • Method of preparing nano tungsten trioxide from microemulsion
  • Method of preparing nano tungsten trioxide from microemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 A method for preparing nano-tungsten trioxide by microemulsion, the specific method steps are as follows:

[0028] (1) Preparation of microemulsion non-aqueous component system

[0029] At a temperature of 25°C, the non-water components in the system were mixed and stirred evenly in the ratio of CTAB surfactant: n-octane oil phase: n-butanol co-surfactant in the ratio of 1: 4.5: 2 to prepare the Microemulsion non-aqueous component system.

[0030] (2) Preparation of sodium tungstate microemulsion

[0031] ① Preparation of sodium tungstate aqueous solution

[0032] Dissolve sodium tungstate into the water phase and stir evenly to prepare an aqueous solution of sodium tungstate with a concentration of 0.06g / ml.

[0033] ② Preparation of sodium tungstate microemulsion

[0034] First mix the sodium tungstate aqueous solution prepared in step (2)-① with the microemulsion non-aqueous system prepared in step (1), and stir evenly. The mass ratio of each component...

Embodiment 2

[0045]Example 2 A method for preparing nano-tungsten trioxide by microemulsion, the specific method steps are as follows:

[0046] (1) Preparation of microemulsion non-aqueous component system

[0047] At a temperature of 10°C, the non-water components in the system were mixed and stirred evenly in the ratio of CTAB surfactant: n-octane oil phase: n-butanol co-surfactant in the ratio of 1:5:4, and the Microemulsion non-aqueous component system.

[0048] (2) Preparation of sodium tungstate microemulsion

[0049] ① Preparation of sodium tungstate aqueous solution

[0050] Sodium tungstate was dissolved into the water phase and stirred evenly to prepare an aqueous solution of sodium tungstate with a concentration of 0.05g / ml.

[0051] ② Preparation of sodium tungstate microemulsion

[0052] First mix the sodium tungstate aqueous solution prepared in step (2)-① with the microemulsion non-aqueous system prepared in step (1), and stir evenly. The mass ratio of each component af...

Embodiment 3

[0063] Embodiment 3 A method for preparing nano-tungsten trioxide by microemulsion, the specific method steps are as follows:

[0064] (1) Preparation of microemulsion non-aqueous component system

[0065] At a temperature of 60°C, the non-water components in the system were mixed and stirred evenly in the ratio of CTAB surfactant: n-octane oil phase: n-butanol co-surfactant in a ratio of 1:7:2.5 to prepare Microemulsion non-aqueous component system.

[0066] (2) Preparation of sodium tungstate microemulsion

[0067] ① Preparation of sodium tungstate aqueous solution

[0068] Sodium tungstate was dissolved into the water phase and stirred evenly to prepare an aqueous solution of sodium tungstate with a concentration of 0.08g / ml.

[0069] ② Preparation of sodium tungstate microemulsion

[0070] First mix the sodium tungstate aqueous solution prepared in step (2)-① with the microemulsion non-aqueous system prepared in step (1), and stir evenly. The mass ratio of each compon...

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Abstract

The invention discloses a preparing method of nanometer tungsten trioxide through micro-emulsion in the nanometer material technological domain, which comprises the following steps: preparing micro-emulsion system with non-water composition; making sodium tungstate micro-emulsion and dense alcaine microemulsion; blending; demulsifying; sedimenting; washing; sintering.

Description

a technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a preparation method of nanometer tungsten trioxide material. Two background technology [0002] Since the 1980s, nanomaterials have become a new topic in condensed matter physics and material science. As a transition metal compound, nano-tungsten trioxide (WO 3 ) is widely used in various gas-sensing materials due to its large specific surface area and significant surface effect, and has become one of the indispensable substrates for many high-quality gas-sensing materials. In addition, nano WO 3 It has a strong absorption capacity for electromagnetic waves, and can also be used as an excellent absorption material for solar energy utilization. At the same time, the preparation method of nanomaterials has also become the focus and hotspot of nanotechnology research. [0003] At present, the preparation methods of nano-tungsten trioxide materials mainly include s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/02
Inventor 侯长军霍丹群唐一科刁显珍董亮
Owner CHONGQING UNIV
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