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A kind of reversible photochromic material with haloapatite structure and its preparation method and application

A technology of photochromic materials and haloapatite, which is applied in the directions of color-changing fluorescent materials, luminescent materials, chemical instruments and methods, etc., can solve the problem of less inorganic photochromic materials, and achieve good fatigue resistance, cheap and easy raw materials. The effect of obtaining and preparation method is simple

Active Publication Date: 2019-12-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on inorganic photochromic materials has not yet reached a mature stage, and is still in the exploratory stage. There are relatively few inorganic photochromic materials reported.

Method used

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  • A kind of reversible photochromic material with haloapatite structure and its preparation method and application
  • A kind of reversible photochromic material with haloapatite structure and its preparation method and application
  • A kind of reversible photochromic material with haloapatite structure and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0063] According to CaCO 3 , CaF 2 , (NH 4 ) 2 HPO 4 , Y 2 o 3 、GeO 2 and Eu 2 o 3 The molar ratio is 7.498: 1.5: 5: 0.5: 1: 0.002. Weigh the above raw materials, mix them and grind them for the first time, put them into the corundum ark after grinding evenly, and heat up in the muffle furnace under the air range first. To 600°C, perform the first constant temperature firing for 3 hours, and then perform the second grinding after natural cooling to room temperature, then raise the temperature to 1420°C in a tube furnace under a weak reducing atmosphere, and carry out the second constant temperature firing for 5 hours. After naturally cooling to room temperature in a tube furnace, the third grinding is carried out to obtain a white fine powder, which is a reverse photochromic material, and its chemical structure is Ca 8.998 Y(PO 4 ) 5 (GeO 4 ) F 2 :0.002Eu 2+ .

[0064] For the diffuse reflectance spectrum detection of the reversible photochromic material prepare...

Embodiment 2

[0066] According to CaCO 3 , CaF 2 , (NH 4 ) 2 HPO 4 , Y 2 o 3 、GeO 2 and Eu 2 o 3 The molar ratio is 7.495: 1.5: 5: 0.5: 1: 0.005. Weigh the above raw materials, mix them and grind them for the first time. Put them into the corundum ark after grinding evenly, and heat up in the muffle furnace under the air range first. To 600°C, perform the first constant temperature firing for 3 hours, and then perform the second grinding after natural cooling to room temperature, then raise the temperature to 1420°C in a tube furnace under a weak reducing atmosphere, and carry out the second constant temperature firing for 5 hours. After naturally cooling to room temperature in a tube furnace, the third grinding is carried out to obtain a white fine powder, which is a reverse photochromic material, and its chemical structure is Ca 8.995 Y(PO 4 ) 5 (GeO 4 ) F 2 :0.005Eu 2+ .

[0067] For the diffuse reflectance spectrum detection of the reversible photochromic material prepare...

Embodiment 3

[0069] According to CaCO 3 , CaF 2 , (NH 4 ) 2 HPO 4 , Y 2 o 3 、GeO 2 and Eu 2 o 3 The molar ratio is 7.49: 1.5: 5: 0.5: 1: 0.01. Weigh the above raw materials, mix them and grind them for the first time. Put them into the corundum ark after grinding evenly, and heat up in the muffle furnace under the air range first. To 600°C, perform the first constant temperature firing for 3 hours, and then perform the second grinding after natural cooling to room temperature, then raise the temperature to 1420°C in a tube furnace under a weak reducing atmosphere, and carry out the second constant temperature firing for 5 hours. After naturally cooling to room temperature in a tube furnace, the third grinding is carried out to obtain a white fine powder, which is a reverse photochromic material, and its chemical structure is Ca 8.99 Y(PO 4 ) 5 (GeO 4 ) F 2 :0.01Eu 2+ .

[0070] For the diffuse reflectance spectrum detection of the reversible photochromic material prepared in...

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Abstract

The invention belongs to the technical field of inorganic photochromic materials, and particularly relates to a reversible photochromic materials with a halogen apatite structure and a preparation method and application thereof. The invention provides the reversible photochromic materials with a halogen apatite structure, wherein the chemical structure of the reversible photochromic materials is Ca<10-x-z>Y<Z>(PO<4>)<6-y>(AO<4>)<y>L2:xEu<2+>; A is Si and / or Ge, L is F and / or Cl, x is the doping content of Eu<2+>, x is more than 0 and less than or equal to 0.2, y is equal to 1-6, Z is equal to1-6. Under the irradiation of ultraviolet light, the reversible photochromic material turns from white to faint yellow or yellow green, and then is irradiated by sunlight or thermally treated to recover white; when y is 1, the reversible photochromic material is yellow green under the irradiation of ultraviolet light; when y is not 1, the reversible photochromic material is faint yellow under theirradiation of ultraviolet light; existing inorganic photochromic materials cannot turn yellow green under the irradiation of ultraviolet light. The reversible photochromic material disclosed by the invention enriches the color types of inorganic photochromic materials.

Description

technical field [0001] The invention belongs to the technical field of inorganic photochromic materials, and in particular relates to a reversible photochromic material with a haloapatite structure and a preparation method and application thereof. Background technique [0002] Photochromism refers to the change of the molecular structure of certain compounds under the action of light of a certain wavelength and intensity, resulting in a corresponding change in the color of the light absorption peak, and this change is generally reversible. Photochromic materials refer to a class of materials that can undergo color changes after being excited by a light source. There are obviously different absorption spectra in the two states before and after the color change. In 1960, two American materials scientists, Amistead and Stooky, first discovered silver halide (AgX) glass, and then developed photochromic glasses, making photochromic materials successfully commercially applied for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K9/00C09K11/86
CPCC09K9/00C09K11/7796
Inventor 胡义华吕洋金亚洪张绍安王传龙
Owner GUANGDONG UNIV OF TECH
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