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Photo-thermal material based on porous carbon spheres and preparation method thereof

A porous carbon, photothermal technology, applied in the preparation/purification of carbon, chemical instruments and methods, general water supply saving, etc., can solve the problems of limiting the practical application of the technology, poor hydrophilicity of photothermal materials, low photothermal conversion efficiency, etc. , to achieve the effect of mild conditions, simple preparation method and convenient operation

Active Publication Date: 2021-07-20
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although some progress has been made in the field of solar desalination, there are still problems such as poor hydrophilicity of photothermal materials, low photothermal conversion efficiency, expensive raw materials, complicated preparation methods, and high costs, which limit the practical application of this technology.

Method used

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  • Photo-thermal material based on porous carbon spheres and preparation method thereof
  • Photo-thermal material based on porous carbon spheres and preparation method thereof
  • Photo-thermal material based on porous carbon spheres and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 0.54g Na 2 MoO 4 Disperse 5.89g of glucose in 57.5ml deionized water, ultrasonically disperse, and magnetically stir at room temperature to obtain a uniform solution A; drop 2.5ml of concentrated hydrochloric acid into solution A, and magnetically stir at room temperature to obtain a uniform solution B; then transfer the mixed solution B to In a hydrothermal reaction kettle, react at a constant temperature of 180°C for 6h, wash, and freeze-dry at -50°C for 35h to obtain a carbon sphere photothermal material precursor.

[0038] The obtained carbon sphere photothermal material precursor was placed in a tube furnace, annealed at 800°C for 2 hours in an argon atmosphere, and the heating rate was 5°C / min; then it was annealed at 300°C for 2 hours in an air atmosphere, and the heating rate was 1°C / min; get MoO 3 porous carbon spheres; subsequently, the obtained MoO 3 The porous carbon spheres were dispersed in ammonia solution, magnetically stirred for 12 hours, and the Mo...

Embodiment 2

[0041] 0.72g Na 2 MoO 4 Disperse 5.89g of glucose in 57.5ml deionized water, ultrasonically disperse, and magnetically stir at room temperature to obtain a uniform solution A; drop 2.5ml of concentrated hydrochloric acid into solution A, and magnetically stir at room temperature to obtain a uniform solution B; then transfer the mixed solution B to In a hydrothermal reaction kettle, react at a constant temperature of 180°C for 6h, wash, and freeze-dry at -50°C for 35h to obtain a carbon sphere photothermal material precursor.

[0042] The obtained carbon sphere photothermal material precursor was placed in a tube furnace, annealed at 800°C for 2 hours in an argon atmosphere, and the heating rate was 5°C / min; then it was annealed at 300°C for 2 hours in an air atmosphere, and the heating rate was 1°C / min; get MoO 3 porous carbon spheres; subsequently, the obtained MoO 3 The porous carbon spheres were dispersed in ammonia solution, magnetically stirred for 12 hours, and the Mo...

Embodiment 3

[0045] 0.54g Na 2 MoO 4 Disperse 5.89g of glucose in 57.5ml deionized water, ultrasonically disperse, and magnetically stir at room temperature to obtain a uniform solution A; drop 2.5ml of concentrated hydrochloric acid into solution A, and magnetically stir at room temperature to obtain a uniform solution B; then transfer the mixed solution B to In a hydrothermal reaction kettle, react at a constant temperature of 180°C for 6h, wash, and freeze-dry at -50°C for 35h to obtain a carbon sphere photothermal material precursor.

[0046] The obtained carbon sphere photothermal material precursor was put into a tube furnace, annealed at 800°C for 2 hours in an ammonia atmosphere, and the heating rate was 5°C / min; then annealed at 300°C for 2 hours in an air atmosphere, and the heating rate was 1°C / min; get MoO 3 N-doped porous carbon spheres; subsequently, the obtained MoO 3 The N-doped porous carbon spheres were dispersed in ammonia solution, stirred magnetically for 12 hours, ...

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Abstract

The invention discloses a photo-thermal material based on porous carbon spheres and a preparation method of the photo-thermal material, the material is of a micron-sized porous carbon sphere structure, and the structure is formed by assembling carbon nanoparticles; and the diameter of the carbon spheres is 2 to 5 [mu] m, and the diameter of the carbon nanoparticles is 100 to 200 nm. In addition, the porous carbon spheres can also be nonmetal (such as N / S) or metal (such as Au / Ag / Cu / Al) or metal-nonmetal co-doped porous carbon spheres. The preparation method comprises the following steps: preparing a carbon sphere photo-thermal material precursor by taking a carbon source, a template material and concentrated hydrochloric acid as raw materials, and carrying out heat treatment and template removal to obtain the carbon sphere photo-thermal material. The porous carbon spheres have excellent photothermal conversion efficiency, and can be used in the fields of seawater desalination, sewage purification, heavy metal recovery, sterilization and the like. The preparation method disclosed by the invention is simple, mild in condition, simple to operate, low in cost and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of photothermal materials, and in particular relates to a photothermal material based on porous carbon spheres and a preparation method thereof. Background technique [0002] Water is one of the basic materials for the survival and development of human society, the source of all life, and the source of all civilizations. However, with the continuous development of the world economy, the continuous increase of population and the continuous deterioration of the environment, the situation of water resources, especially fresh water resources, is becoming increasingly severe, which will seriously affect human life. Desalination and purification of seawater can effectively increase desalinated resources, and is one of the effective methods to solve the shortage and pollution of freshwater resources, which has attracted widespread attention. [0003] Solar energy is an important renewable energy, which has the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C02F1/14C02F103/08
CPCC01B32/05C02F1/14C02F2103/08Y02A20/212Y02A20/124Y02A20/142
Inventor 庞靖怡刘心娟张希龙黎晋良潘丽坤
Owner CHINA JILIANG UNIV