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Gold nanoparticle/graphene three-dimensional photothermal conversion material and application thereof

A light-to-heat conversion material and gold nanoparticle technology, applied in the chemical field, can solve the problems of inability to realize light energy conversion, storage, and light energy utilization, and achieve the effect of light weight, multi-scale pore structure, and high porosity

Inactive Publication Date: 2018-11-23
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, gold nanoparticles mainly act as "microscopic heat sources" in the liquid phase environment, and cannot achieve a large amount of light energy conversion and storage, so it is difficult to effectively use light energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] (1) Preparation of gold nanoparticles of different sizes

[0033] Synthetic seed crystals by sodium citrate method: In the preparation process, first add a certain amount of chloroauric acid into a 250ml three-necked bottle, heat it under reflux to 99°C, and then add lemon to the chloroauric acid solution in high-speed stirring Sodium acid solution, the solution will turn from gray to blue and finally wine red, which proves that the gold nanoparticles have been successfully prepared. After continuing to heat and stir for 30 minutes, stop the reaction. (Note: All containers for the reaction were soaked in a mixed solution of concentrated sulfuric acid and potassium dichromate for 30 minutes, washed with distilled water repeatedly after soaking, and finally dried in a vacuum oven for use)

[0034] Using mercaptosuccinic acid (MSA) as a reducing agent to prepare gold nanoparticles with a particle size range of 20-150nm. First add 0.8ml 5×10 to a 100ml round bottom flask ...

Embodiment 2

[0041] Example 2 purposes

[0042] The three-dimensional gold nanoparticle / graphene material can be used as a light-to-heat (steam) conversion material to realize seawater desalination; the gold nanoparticle / graphene material light-to-heat conversion device of the present invention can efficiently convert light energy into heat energy, and can quickly Seawater is heated into water vapor, and the distilled water is collected through the reflux device to obtain pure water without salt, thereby realizing seawater desalination.

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Abstract

The invention discloses a gold nanoparticle / graphene nano composite material which is prepared by a chemical assembly method for gold nanoparticles and graphene, and a directional freeze-drying methodis used for preparing the gold nanoparticle / graphene nano composite material into a gold nanoparticle / graphene three-dimensional light-heat (steam) conversion material. The material can efficiently convert light energy into heat energy, so that water can be quickly heated into water vapor to finally achieve the water purifying purpose, and therefore, various functions such as seawater desalting,fractionation, sterilization and sewage treatment are realized.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and specifically relates to new materials and preparation methods thereof, in particular to the preparation and application of gold nanoparticle / graphene three-dimensional photothermal materials. Background technique [0002] Gold nanoparticles are one of the most widely used photothermal materials. They exhibit strong spectral absorption in the visible light band. When they interact with incident light waves, surface plasmon resonance will occur, and the electron air mass of the entire nanoparticle will Resonance will occur under the action of the light field, and then a large amount of heat will be generated. However, gold nanoparticles mainly act as "microscopic heat sources" in the liquid phase environment, and cannot achieve a large amount of light energy conversion and storage, so it is difficult to effectively use light energy. In order to give full play to the photothermal effect of go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C01B32/184C02F103/08
CPCC01B32/184C02F1/14C02F2103/08Y02A20/124Y02A20/142Y02A20/212
Inventor 曹振兴陈奠宇许亮秦余杨袁凤左晓兵罗铭左明明
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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