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Tungsten oxide quantum dot material and preparation method thereof

A technology of tungsten oxide quantum dots and tungsten oxide, which is applied in the field of tungsten oxide quantum dot materials and their liquid phase preparation, tungsten oxide nanomaterials and their preparation, can solve the problems of difficult template removal and inconvenient application, and achieve obvious quantum size effect , easy to operate, uniform particle size effect

Active Publication Date: 2015-07-22
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, it is difficult to remove the template in this type of method, which brings inconvenience to subsequent applications.

Method used

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  • Tungsten oxide quantum dot material and preparation method thereof
  • Tungsten oxide quantum dot material and preparation method thereof
  • Tungsten oxide quantum dot material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037]Precursor synthesis: Mix 1.6g tungstic acid and 4g phenol in a 100ml single-necked flask, heat to 100 oC , after reacting for 12 hours, cool down at room temperature naturally, add 100ml 5% KOH solution and 50ml petroleum ether successively, wash, extract, separate liquid, repeat this process 3 times, collect the upper layer, 40 oC Distilled under reduced pressure to obtain 0.9 g of organic tungsten precursor with a yield of about 30.0%.

Embodiment 2

[0039] Precursor synthesis: Mix 3.6g tungsten oxychloride and 12g benzaldehyde in a 100ml single-necked flask, heat to 60 oC , after reacting for 10h, cool down at room temperature naturally, and add 50ml 10% Na 2 CO 3 Solution and 100ml petroleum ether, washing, extraction, liquid separation, this process was repeated 3 times, and the upper layer was collected, 40 oC Distilled under reduced pressure to obtain 4.2 g of organic tungsten precursor with a yield of about 62.4%.

Embodiment 3

[0041] Precursor synthesis: Mix 1.6g tungsten hexacarbonyl and 10g 2-chlorophenol in a 100ml single-necked flask, heat to 150 under vigorous stirring oC , after reacting for 18 hours, cool the room temperature naturally, add 50ml of 10% ammonia solution and 50ml of petroleum ether successively, wash, extract, and separate liquids. This process is repeated 3 times, and the upper layer is collected. 40 oC Distilled under reduced pressure to obtain 1.8 g of organic tungsten precursor with a yield of about 51.8%.

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Abstract

The invention provides a tungsten oxide quantum dot material and a preparation method thereof. The tungsten oxide quantum dot material comprises tungsten oxide nanoparticles with the particle size of several nanometers to a dozen of nanometers, the particle size of the tungsten oxide nanoparticles is uniform, the surface of the nanoparticles is covered with an organic matter coating layer, and the nanoparticles can be highly dispersed in a non-polar organic solvent, and has a quantum dimension effect. Preferably, the particle size of the tungsten oxide quantum dot material is smaller than 2nm; and the tungsten oxide quantum dot material can be prepared through a liquid phase method, and is prepared through two steps of preparing an organic tungsten precursor from an easily available inorganic tungsten compound and preparing the material. The preparation method has the advantages of simple process flow, easily available raw material, good reappearance and high controllability, and the obtained tungsten oxide nanoparticles have the advantages of uniform particle size, adjustable dimension, high dispersion, obvious quantum dimension effect and wide application prospect.

Description

technical field [0001] The invention relates to a tungsten oxide nano material and a preparation method thereof, in particular to a tungsten oxide quantum dot material with high dispersion, uniform appearance and adjustable size and a liquid phase preparation method thereof, belonging to the technical field of new materials. Background technique [0002] Energy shortage and environmental degradation have become the primary problems faced by countries all over the world, and the development of new functional materials will become an effective way to solve the above problems. Due to its unique physical, chemical and electronic properties, tungsten oxide materials have good application prospects in functional fields such as color-changing windows, photocatalysis, fuel cells, chemical sensors, environmental purification, and solar energy conversion, and have become one of the current research hotspots for new materials. one. [0003] It is well known that amorphous tungsten oxi...

Claims

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Application Information

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IPC IPC(8): C09K11/68C01G41/02B82Y40/00
Inventor 赵志刚丛杉
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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