A metal-organic framework crystal functional material and its preparation method and application

A metal-organic framework and functional material technology, which is applied in the field of metal-organic framework crystal functional materials and its preparation, can solve the problems of low room temperature discoloration accuracy, limited discoloration temperature, and long recoloring time, and achieve a wide range of light absorption and discoloration The effect of low temperature and short recoloring time

Active Publication Date: 2020-08-18
北京中科合盈数据科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] 3. Gains and losses of protons between molecules
[0015] However, due to the small discoloration and color difference of reversible thermochromic materials at present, and limited by the use conditions, heating time and speed, the discoloration accuracy at room temperature is not high, the discoloration temperature is limited, and the recoloring time is long, resulting in its limited use.

Method used

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  • A metal-organic framework crystal functional material and its preparation method and application
  • A metal-organic framework crystal functional material and its preparation method and application
  • A metal-organic framework crystal functional material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 sample preparation:

[0043] Mix the indium source, cobalt source, 1,3,5-trimesic acid, 1,3-dimethyl-tetrahydro-2-pyrimidinone and water in a certain proportion to obtain the initial gel mixture, and the initial gel The mixture was sealed in a 30mL polytetrafluoroethylene-lined hydrothermal reaction kettle, placed in a box-type resistance furnace, crystallized at the crystallization temperature for a period of time, filtered, washed, and dried to obtain purple-black flakes [ In 2 co 5 (BTC) 2 (HBTC) 3 (μ-O) 4 (H 3 O) 4 ]·(H 2 O) 9 crystal sample. Table 1 shows the relationship between the types and ratios of raw materials in the initial gel mixture, crystallization temperature, crystallization time, and sample numbers.

[0044] Table 1 Relationship between sample synthesis conditions and sample numbers

[0045]

Embodiment 2

[0046] The crystal structure analysis of embodiment 2 sample:

[0047] The structures of samples 1# to 10# were analyzed by single crystal X-ray diffraction and powder X-ray diffraction.

[0048] The single crystal X-ray diffraction was performed on a Rigaku Mercury CCD type X-ray single crystal diffractometer from Bruker, Germany. The crystal size is 0.12×0.10×0.12mm 3 ; The data collection temperature is 293K, and the diffraction light source is Mo-Kα ray monochromated by graphite The scanning method is ω-2θ; the data is processed by the Multi-Scan method for absorption correction. Structural analysis was completed using the SHELXTL-97 program package; the position of the heavy atom was determined by the direct method, and the coordinates of the remaining atoms were obtained by the difference Fourier synthesis method; 2 The full-matrix least-squares method was used to refine all atomic coordinates and anisotropic thermal parameters.

[0049] Powder X-ray diffraction was...

Embodiment 3

[0058] Embodiment 3 reversible discoloration experiment and result:

[0059] Take an appropriate amount of sample 1# material, place it evenly in a watch glass, heat it in an oven at different temperatures, observe the color change of the sample, and record the color change time; take out the watch glass, observe the recolor change in the air, and record the recolor time. The discoloration performance of the low-temperature reversible thermochromic material was tested, and the results are shown in Table 1.

[0060]

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Abstract

The invention discloses a metal organic skeleton crystal functional material with the chemical formula of [In2Co5(BTC)2(HBTC)3(mu-O)4(H3O)4].(H2O)9, and belongs to an orthorhombic system. The space group is Pmma, and a cell parameter is that alpha is equal to 90 degrees, beta is equal to 90 degrees, gamma is equal to 90 degrees and z is equal to 4, the metal organic skeleton crystal functional material has the advantages of excellent light adsorption performance, reversible thermochromism characteristic, wide light adsorption range and high color change speed.

Description

technical field [0001] The invention belongs to the technical field of crystal functional materials, and in particular relates to a metal organic framework crystal functional material and its preparation method and application. Background technique [0002] Compared with non-renewable resources such as coal, oil, and natural gas, solar energy has the advantages of abundant resources, clean and pollution-free, and not subject to geographical restrictions. There are many ways to utilize solar energy, such as photothermal conversion, photoelectric conversion or photochemical conversion. Among the many solar energy utilization methods, the most attractive one is the solar cell based on the photoelectric effect. In recent decades, solar energy utilization technology has made great progress in scientific research, commercial production, market development, etc., and has become one of the emerging industries with sustained and rapid development. Therefore, improving the effective...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/54C30B5/00
CPCC30B5/00C30B29/54
Inventor 宋俊玲陈伟军
Owner 北京中科合盈数据科技有限公司
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