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Preparation method of thorn-ball photochromic MoO3 thin film

A photochromic, thorn spherical technology, applied in the direction of molybdenum oxide/molybdenum hydroxide, etc., can solve the problem of the film being insensitive to excitation light, and achieve the effect of good photochromic effect, excitation light sensitivity, and large light absorption area.

Inactive Publication Date: 2013-09-11
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MoO 3 The film has good photochromic properties, but there are still problems such as the insensitivity of the film to the excitation light, resulting in MoO 3 The thin film has not fully entered the field of practical application, and there are still some limitations in the application of the thin film, so improving the light sensitivity of the thin film is the difficulty of current research

Method used

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  • Preparation method of thorn-ball photochromic MoO3 thin film
  • Preparation method of thorn-ball photochromic MoO3 thin film
  • Preparation method of thorn-ball photochromic MoO3 thin film

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Experimental program
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Effect test

Embodiment 1

[0033] A spiny spherical photochromic MoO 3 The preparation method of thin film, it comprises the following steps:

[0034] (1) Prepare 0.16 mol / L Na 2 MoO 4 Solution 50 mL;

[0035] (2) Press Na 2 MoO 4 The volume ratio of the solution to the interfering agent formaldehyde solution is 50.0:2. With the magnetic stirrer stirring at a speed of 400 r / min, the temperature is controlled at 10°C, and 2 mL is added dropwise at a speed of 50 seconds per drop with a mass fraction of 37 % formaldehyde solution in Na 2 MoO 4 In the solution, adjust the pH of the solution to 1.0 with concentrated hydrochloric acid with a concentration of 37% by mass, and stir and homogenize at 400 r / min at 10°C for 4 h in the dark. ；

[0036] (3) Move the homogenized reaction solution into a reaction vessel, put it on a cleaned ITO conductive glass substrate, and react in hydrothermal reaction at 120°C for 48 h;

[0037] (4) After the hydrothermal reaction is over, after the reaction system is co...

Embodiment 2

[0041] A spiny spherical photochromic MoO 3 The preparation method of thin film, it comprises the following steps:

[0042] (1) Prepare 50 mL of 0.16 mol / L potassium molybdate solution;

[0043] (2) According to the volume ratio of potassium molybdate solution and interfering agent formaldehyde solution of 50.0:1, under the magnetic stirrer stirring at a speed of 200 r / min, the temperature is controlled at 5°C, and the speed is 30 seconds per drop drop by drop Add 1 mL of formaldehyde solution with a mass fraction of 37% to the potassium molybdate solution, adjust the pH of the solution to 0.8 with concentrated hydrochloric acid with a concentration of 38% by mass, stir and homogenize at 5°C and avoid light at 200 r / min for 3 h ；

[0044] (3) Move the homogenized reaction solution into a reaction vessel, put it on a cleaned FTO conductive glass substrate, and react in hydrothermal reaction at 100°C for 24 h;

[0045] (4) After the hydrothermal reaction is over, after the re...

Embodiment 3

[0048] A spiny spherical photochromic MoO 3 The preparation method of thin film, it comprises the following steps:

[0049] (1) Prepare 50 mL of 0.16 mol / L potassium molybdate solution;

[0050] (2) According to the volume ratio of potassium molybdate solution and interfering agent formaldehyde solution of 50.0:3, under the magnetic stirrer stirring at a speed of 600 r / min, the temperature is controlled at 15°C, and the speed is 60 seconds per drop drop by drop Add 3 mL of formaldehyde solution with a mass fraction of 37% to the potassium molybdate solution, adjust the pH of the solution to 1.5 with concentrated hydrochloric acid with a concentration of 38% by mass, stir and homogenize at 15°C and avoid light at 600 r / min for 6 h ；

[0051] (3) Move the homogenized reaction solution into a reaction vessel, put it on a cleaned FTO conductive glass substrate, and react in hydrothermal reaction at 140°C for 60 h;

[0052] (4) After the hydrothermal reaction is over, after the ...

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Abstract

The invention discloses a preparation method of a thorn-ball photochromic MoO3 thin film. The preparation method comprises the following steps: (1) preparing a 0.05-3mol / L molybdate liquor; (2) adding a formaldehyde liquor to the molybdate liquor, adjusting the pH of the liquor by a pH adjustor to 0.8-1.5, and stirring and homogenizing in dark light; (3) transferring the homogenized reaction liquor to a reaction container, and placing a clean transparent conductive oxide crystal substrate for hydrothermal reaction; (4) after hydrothermal reaction, cooling to reaction system to room temperature, taking out the crystal substrate plated with film from the container for hydrothermal reaction, and washing with water and alcohol and drying to prepare the thorn-ball photochromic MoO3 thin film. The MoO3 thin film prepared by the invention can generate a good photochromic effect under a condition of a low power excitation light source, and the photochromic performance of the MoO3 thin film is improved.

Description

technical field [0001] The invention relates to a kind of prickly spherical photochromic MoO 3 Preparation method of thin film, especially the preparation of prickly spherical photochromic MoO under the action of organic interfering agent formaldehyde 3 thin film method. Background technique [0002] Some substances will change their color under the irradiation of light of a certain wavelength, and at the same time, they will restore their original color under the action of light, heat or avoiding light. The color of the substance is reversible under the action of light. The changing phenomenon is called photochromism. [0003] Since TerMer first discovered dinitromethane potassium salt with photochromic properties in 1867, the research and application of photochromic materials have made great progress. Scientific researchers have developed a variety of organic and inorganic photochromic materials. Material. In recent years, photochromic materials have attracted more and...

Claims

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Application Information

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IPC IPC(8): C01G39/02
Inventor 阳雅丽胡凤萍肖伊琳鄢鹏沈毅李珍
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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