Preparation method of composite photosensitive nanoparticles based on WO3 quick response

A nano-particle, fast-response technology, which is applied in the field of preparation of composite photosensitive nanoparticles, can solve the problems of environmental friendliness, high equipment requirements, and long time-consuming, and achieve good commercial application potential, low raw material cost, and wide reaction wavelength. Effect

Pending Publication Date: 2020-05-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

High requirements on equipment, high energy consumption, time-consuming, does not meet the requirements of environmental friendliness

Method used

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  • Preparation method of composite photosensitive nanoparticles based on WO3 quick response
  • Preparation method of composite photosensitive nanoparticles based on WO3 quick response
  • Preparation method of composite photosensitive nanoparticles based on WO3 quick response

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A WO-based 3 The preparation method of the fast-response composite photosensitive nanoparticles comprises the following steps:

[0033] 1) Preparation of deep eutectic solvent (DES) ionic liquid: at room temperature, add 28g of choline chloride and 13mL of ethylene glycol solution into a three-necked flask, and adjust the stirrer speed to 1000r / min, stirred until forming a transparent homogeneous mixture, obtaining a deep eutectic solvent (DES) ionic liquid;

[0034] 2) Based on WO 3Hydrothermal synthesis of fast-response composite photosensitive nanoparticles: Take 21.74g of deep eutectic solvent (DES) ionic liquid, pour it into a 50mL beaker, then weigh 0.97g of ammonium tungstate and 0.03g of ammonium molybdate tetrahydrate into the above beaker , dissolve, add acetic acid under stirring to adjust its pH to 4, adjust the speed of the stirrer at 1200r / min under the condition of 40°C oil bath, stir for 6h, cool to room temperature after the reaction and filter, then...

Embodiment 2

[0036] A WO-based 3 The preparation method of the fast-response composite photosensitive nanoparticles comprises the following steps:

[0037] 1) Preparation of deep eutectic solvent (DES) ionic liquid: at room temperature, add 28g of choline chloride and 26mL of glycerol solution into a three-necked flask, and adjust the stirrer speed to 800r / min, stirred until forming a transparent homogeneous mixture, obtaining a deep eutectic solvent (DES) ionic liquid;

[0038] 2) Hydrothermal synthesis: Take 15.66g of deep eutectic solvent (DES) ionic liquid, pour it into a 50mL beaker, then weigh 0.975g of ammonium tungstate and 0.025g of ammonium molybdate tetrahydrate into the above beaker, dissolve, and stir Add acetic acid to adjust its pH to 4.5, adjust the stirrer speed to 1000r / min under the condition of 50°C oil bath, stir for 5h, cool to room temperature after the reaction and filter, then wash with ethanol and distilled water respectively, vacuum dry at 80°C and place in 15...

Embodiment 3

[0040] A WO-based 3 The preparation method of the fast-response composite photosensitive nanoparticles comprises the following steps:

[0041] 1) Preparation of deep eutectic solvent (DES) ionic liquid: at room temperature, add 32.2g tetrabutylammonium bromide and 56mL ethylene glycol solution into a three-necked flask, and adjust the stirrer under the condition of 75°C oil bath Rotating speed 1200r / min, stirring until forming a transparent homogeneous mixture to obtain a deep eutectic solvent (DES) ionic liquid;

[0042] 2) Hydrothermal synthesis: Take 49g of deep eutectic solvent (DES) ionic liquid, pour it into a 50mL beaker, then weigh 0.97g of ammonium tungstate and 0.03g of ammonium molybdate tetrahydrate into the above beaker, dissolve, and stir Add acetic acid to adjust its pH to 5, adjust the stirrer speed to 1200r / min under the condition of 50°C oil bath, stir for 6h, cool to room temperature and filter after the reaction, wash with ethanol and distilled water respe...

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Abstract

The invention discloses a preparation method of composite photosensitive nanoparticles based on WO3 quick response. The preparation method comprises the following steps: 1) weighing a hydrogen bond acceptor and a hydrogen bond donor according to a molar ratio of 1:1-1:10, and uniformly mixing to obtain an eutectic solvent ionic liquid; and 2) uniformly mixing ammonium tungstate, ammonium molybdatetetrahydrate and the eutectic solvent ionic liquid, adding acetic acid while stirring to adjust the pH value to 3-5 to obtain a mixed solution, heating the mixed solution, cooling the mixed solutionto room temperature, filtering, washing, and drying to obtain the composite photosensitive nanoparticles based on WO3 rapid response. According to the method, an eutectic solvent is innovatively introduced as a reaction medium, so that WO3 composite nanoparticles with excellent photosensitivity can be prepared by using a simple device at a low temperature and normal pressure, the method is simpleto operate, environment-friendly, low in energy consumption and mild and simple in reaction condition, and the obtained composite material quickly responds under ultraviolet irradiation.

Description

technical field [0001] The present invention relates to a WO-based 3 The invention discloses a method for preparing fast-response composite photosensitive nanoparticles, which belongs to the field of photosensitive nanoparticle materials. Background technique [0002] The phenomenon of photochromism refers to that a certain compound A undergoes a specific chemical reaction when it is irradiated by light of a certain wavelength and intensity, and another product B is obtained. Due to the different structure of the product B, its absorption spectrum changes significantly ( color changes). And under the irradiation of another wavelength of light or the action of heat, product B can return to the form of compound A. This kind of compound that can undergo reversible color change under the action of light is called photochromic material. Photochromic materials can be divided into two categories: inorganic photochromic materials and organic photochromic materials. Inorganic pho...

Claims

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Application Information

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IPC IPC(8): C09K9/00B82Y30/00
CPCC09K9/00B82Y30/00Y02P20/54
Inventor 付国东邓摇摇德日姚芳
Owner SOUTHEAST UNIV
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