Light absorbing material and preparation method thereof

A light-absorbing material and crystal structure technology, applied in chemical instruments and methods, other chemical processes, manganese compounds, etc., can solve problems such as difficult control, high cost of spinel transition oxide powder, and complicated preparation process, and achieve Short production cycle, improved light absorption performance, and easy operation

Active Publication Date: 2021-09-17
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of spinel-type transition oxide powder by this method has the disadvantages of high cost, complicated preparation process and difficult control.

Method used

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  • Light absorbing material and preparation method thereof
  • Light absorbing material and preparation method thereof
  • Light absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 A light-absorbing material, the chemical composition formula is CuMn 2 O 4 . DETAILED prepared as follows:

[0028] Molar ratio of the metal element 1: Weigh 2 CuO (15.910g), MnO 2 (34.776g) powder; sphere: material: water mass ratio (g / g) 2: 1: 3, respectively, bead milling, and the raw material ultra pure water was poured into a ball mill jar; the mill pot is placed on a ball mill station first milling for 1 hour, the rotation speed of 300r / min, then suspended 10min, a ball mill as a period, over 10min after milling for 1 hour, the rotation speed of 300r / min, in total powder mixture was ball milled for 5 hours; then milled the resulting powder mixture was dried, milled; and then the mixture powder was calcined at 800 ℃ warmed to grinding in a box resistance furnace in an air atmosphere, heating rate of 3 ℃ / min, the calcination time is 2 hours, after calcination furnace cooling to room temperature , you can get CuMn 2 O 4 A light absorbing material.

[00...

Embodiment 2

[0030] Example 2 A light absorbing material embodiment, the chemical composition formula CuMn 1.99 CE 0.01 O 4 . DETAILED prepared as follows:

[0031] Molar ratio of the metal element 1: 1.99: 0.01 Weigh CuO (15.910g), MnO 2 (34.602g), CeO 2 (0.344 g) powder; sphere: material: water mass ratio (g / g) 4: 1: 3, respectively, bead milling, and the raw material ultra pure water was poured into a ball mill jar; the mill pot is placed on a ball mill station first milling for 1 hour, the rotation speed of 450r / min, then suspended 10min, a ball mill as a period, over 10min after milling for 1 hour, the rotation speed of 450r / min, a total of 7 hours to give a mixed powder milling; then milled the resulting powder mixture was dried, milled; mixture was then milled powder was heated to 1100 ℃ calcined in a box furnace in an air atmosphere resistance heating rate of 5 ℃ / min, the calcination time was 5 hours, after calcination air quench cooling to room temperature , you can get CuMn 1...

Embodiment 3

[0034] Example 3 A light absorbing material embodiment, the chemical composition formula CuMn 1.99 La 0.01 O 4 . DETAILED prepared as follows:

[0035] Molar ratio of the metal element 1: 1.99: 0.01 Weigh CuO (15.910g), MnO 2 (34.602g), La 2 O 3(0.326 g) powder; sphere: material: water mass ratio (g / g) 4: 1: 3, respectively, bead milling, and the raw material ultra pure water was poured into a ball mill jar; the mill pot is placed on a ball mill station first milling for 1 hour, the rotation speed of 350r / min, then suspended 10min, a ball mill as a period, over 10min after milling for 1 hour, the rotation speed of 350r / min, a total mixed powder was ball milled for 12 hours; then milled the resulting powder mixture was dried, milled; mixture was then milled powder was heated to 1100 ℃ calcined in a box furnace in an air atmosphere resistance heating rate of 3 ℃ / min, the calcination time was 6 hours, after calcination furnace cooling to room temperature , you can get CuMn 1....

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Abstract

The invention relates to a light absorbing material, which has a spinel crystal structure, wherein the chemical general formula of the material is CuMn2-yREyO4, RE is Ce or La, and y is more than or equal to 0 and less than or equal to 0.20. The invention also discloses a preparation method of the material. According to the invention, the preparation method adopts a mechanical wet grinding method for mixing and a solid-phase synthesis method for sintering, and has the advantages of simplicity in operation, short production period, no need of complex post-treatment, capability of realizing industrial production and the like, the solar energy absorption rate of the prepared material at the wave band of 0.3-2.5 microns is greater than or equal to 0.90, and the prepared material is good in thermal stability in air and stable in structure.

Description

Technical field [0001] The present invention relates to the field of energy material, particularly to a light-absorbing material and its preparation method. Background technique [0002] With the progress and development of industry and technology, human demand for energy is increasing, the energy shortage is a major problem facing the world today, the use of new materials, energy saving and renewable energy including the fundamental way to solve the above problems, it will become the future the new direction of the material development. Ultraviolet light absorbing material - with a near-infrared range (0.3 ~ 2.5μm) of high radiation absorptivity, is the core material of the light-heat conversion of solar radiation into thermal energy can be utilized, used in solar collectors - Vis and solar heat accumulator. [0003] Spinel-type transition metal oxide is an important solar heat absorbing material, a spinel-type light absorbing material having a high solar absorptance and thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/12C09K3/00
CPCC01G45/1235C09K3/00C01P2002/32C01P2006/60Y02E10/40
Inventor 高祥虎王伟明刘刚何成玉刘宝华汪增强
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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