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Inorganic photochromic powder, and preparation method and application thereof

A photochromic and powder technology, applied in the field of materials, can solve the problems of slow fading speed of photochromic materials and limited practical application of photochromic materials, and achieve the effects of excellent light regulation efficiency, good absorption capacity, and wide application range

Pending Publication Date: 2021-09-03
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually, photochromic materials fade very slowly, which seriously limits the practical application of photochromic materials

Method used

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  • Inorganic photochromic powder, and preparation method and application thereof
  • Inorganic photochromic powder, and preparation method and application thereof
  • Inorganic photochromic powder, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0043] In one embodiment, the preparation method comprises the following steps:

[0044] 1) Preparation of metal oxides with photochromic properties;

[0045] 2) Oxidizing the metal oxide to obtain the inorganic photochromic powder.

[0046] In another embodiment, the preparation method includes: adding an oxidizing agent during the preparation of the metal oxide with photochromic properties to obtain the inorganic photochromic powder.

[0047] It should be pointed out that the present invention does not make any limitation on the preparation method of metal oxides with photochromic properties, and can be prepared by hydrothermal method, solvothermal method, solid phase synthesis method, water bath method, oil bath method, chemical deposition method prepared by other methods.

[0048] Specifically, after the metal oxide is prepared, the metal oxide is oxidized to obtain the inorganic photochromic powder of the present invention; or, in the process of preparing the metal oxide,...

Embodiment 1

[0079] The inorganic photochromic powder of this embodiment is prepared according to the following method:

[0080] 1) Take the S1 in Comparative Example 1 to prepare an S1 aqueous solution whose mass concentration is 10%;

[0081] 2) Spread 1ml of S1 aqueous solution on the glass slide, move the glass slide to a constant temperature oven with an oxidizing atmosphere, set the temperature of the constant temperature oven at 50°C, keep it warm for 12 hours, take it out, and collect the sample powder on the glass slide in Together, the sample is named S1-1.

[0082] The oxidizing atmosphere is formed by taking 1 ml of hydrogen peroxide solution with a mass concentration of 10% and spraying it into the oven.

[0083] X-ray photoelectron spectroscopy analysis of S1 and S1-1

[0084] figure 2 It is the comparison chart of XPS analysis of S1 in Comparative Example 1 of the present invention and S1-1 in Example 1. From figure 2 It can be seen that, compared with the unoxidized ...

Embodiment 2

[0086] The inorganic photochromic powder of this embodiment is prepared according to the following method:

[0087] 1) Take the S1 in Comparative Example 1 to prepare an S1 aqueous solution whose mass concentration is 10%;

[0088] 2) Spread 1ml of S1 aqueous solution on the glass slide, move the glass slide to a constant temperature oven with an oxidizing atmosphere, set the temperature of the constant temperature oven at 50°C, keep it warm for 12 hours, take it out, and collect the sample powder on the glass slide in Together, the samples were named S1-0.

[0089] The oxidizing atmosphere is formed by taking 1 ml of hydrogen peroxide solution with a mass concentration of 30% and spraying it into the oven.

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Abstract

The invention provides an inorganic photochromic powder, and a preparation method and application thereof. The inorganic photochromic powder comprises a metal oxide with a photochromic characteristic and oxygen free radicals attached to the surface of the metal oxide. The inorganic photochromic powder disclosed by the invention not only has excellent light adjusting efficiency, but also can realize rapid color fading.

Description

technical field [0001] The invention relates to a color-changing powder, in particular to an inorganic photochromic powder and its preparation method and application, belonging to the field of material technology. Background technique [0002] According to statistics, my country's building energy consumption accounts for as much as 30% of the total social energy consumption, and in building energy consumption, the energy consumption generated by glass accounts for about 50% of building energy consumption. At present, low-E glass is mainly used, and the thermal Measures such as discoloration, photochromism and electrochromism to reduce energy consumption of windows. Among them, photochromism has been valued and studied by many researchers due to its simple structure and automatic response to the environment. At the same time, photochromic smart ink requires the coating to have the ability to change color quickly and fade quickly. [0003] The so-called photochromic materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/00C01G39/02C01G41/02B82Y40/00C09D5/29
CPCC09K9/00C01G39/02C01G41/02B82Y40/00C09D5/29C01P2002/72C01P2002/85C01P2004/17C01P2004/64
Inventor 李宁
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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