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Graphene/metal sulfide multi-stage nano-material and environment-friendly synthesizing method thereof

A metal sulfide and green synthesis technology, applied in the field of nanomaterials, can solve the problems of environmental pollution of surfactants, and achieve the effects of preventing agglomeration, improving conductivity, and large specific surface area

Inactive Publication Date: 2019-02-22
HUNAN UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, people usually add surfactants to form multi-level nanostructures, but the surfactants themselves will cause certain pollution to the environment

Method used

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  • Graphene/metal sulfide multi-stage nano-material and environment-friendly synthesizing method thereof
  • Graphene/metal sulfide multi-stage nano-material and environment-friendly synthesizing method thereof
  • Graphene/metal sulfide multi-stage nano-material and environment-friendly synthesizing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of graphene / cadmium sulfide multi-level nanomaterials is as follows:

[0040] (1) Add 10 mL of graphene oxide solution with a concentration of 1 g / L to 50 mL of deionized water for ultrasonic dispersion to obtain graphene oxide dispersion a;

[0041] (2) Add 0.83 g of cadmium acetate dihydrate and 1 g of L-histidine to the above-mentioned uniformly dispersed solution a, and ultrasonically disperse to obtain a uniformly dispersed solution b;

[0042] (3) Add 0.3 g of thioacetamide to the uniformly dispersed solution b, and ultrasonically stir for 30 min to obtain a uniformly dispersed solution c;

[0043] (4) Microwave-assisted heating is performed on solution c, and after reacting at 200°C for 30 min, solid-liquid separation is performed to obtain a yellow precipitate;

[0044] (5) Wash the obtained precipitation material with distilled water and absolute ethanol 6 times to obtain impurity-free graphene / cadmium sulfide multi-level nanomaterial;

[0045] See ...

Embodiment 2

[0049] The preparation method of the photocatalytic material of the graphene / copper sulfide multi-level nanomaterial is as follows:

[0050] (1) Add 10 mL of graphene oxide solution with a concentration of 1 g / L to 50 mL of deionized water and ultrasonically disperse to obtain graphene oxide dispersion a;

[0051] (2) Add 0.8 g of copper acetate monohydrate and 1 g of L-histidine to the above uniformly dispersed solution a, and ultrasonically disperse to obtain a uniformly dispersed solution b;

[0052] (3) Add 0.3 g of thioacetamide to the uniformly dispersed solution b, and stir ultrasonically for 20 to 30 minutes to obtain a uniformly dispersed solution c;

[0053] (4) Perform microwave-assisted heating on solution c, and after reacting at 200°C for 30 min, solid-liquid separation is performed to obtain a black precipitate;

[0054] (5) Wash the obtained black precipitation material 6 times with distilled water and absolute ethanol to obtain impurity-free graphene / copper sulfide mult...

Embodiment 3

[0058] The preparation method of graphene / stannous sulfide multi-level nanomaterials is as follows:

[0059] (1) Add 10 mL of graphene oxide solution with a concentration of 1 g / L to 50 mL of deionized water and ultrasonically disperse to obtain graphene oxide dispersion a;

[0060] (2) Add 0.9 g of stannous chloride dihydrate and 1 g of L-histidine to the above-mentioned uniformly dispersed solution a, and ultrasonically disperse to obtain a uniformly dispersed solution b;

[0061] (3) Add 0.3 g of thioacetamide to the uniformly dispersed solution b, and stir ultrasonically for 20 to 30 minutes to obtain a uniformly dispersed solution c;

[0062] (4) Perform microwave-assisted heating on solution c, and after reacting at 200°C for 30 min, solid-liquid separation is performed to obtain precipitated material;

[0063] (5) Wash the obtained precipitation material with distilled water and absolute ethanol for 5-6 times to obtain impurity-free graphene / stannous sulfide multi-level nanomater...

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Abstract

The invention relates to a graphene / metal sulfide multi-stage nano-material and an environment-friendly synthesizing method thereof. According to the method, graphene oxide, L-histidine, metal salt and thioacetamide serving as raw materials to prepare the graphene / metal sulfide multi-stage nano-material by utilizing microwave assisted heating. The method has the characteristics that rich functional group in the L-histidine is utilized, metal ions in solution are complexed, the nucleation and grain growth process are controlled, and nano-particle self-assembly is realized through the interaction among groups to form the metal sulfide multi-stage nano-material, and the method is a pollution-free and environment-friendly synthesizing technology. Furthermore, graphene oxide with a large specific surface area is utilized as a carrier to form the graphene / metal sulfide multi-stage nano-material, which can be efficiently applied to the fields of sewage treatment, environmental protection, solar cells and the like by combining high activity of a multi-stage nano-material and the large specific surface area and high conductive performance of graphene.

Description

Technical field [0001] The invention relates to a graphene / metal sulfide multi-level nano material and a green synthesis method thereof, belonging to the field of nano materials. Background technique [0002] As a very important semiconductor nanomaterial, metal sulfide shows great application prospects in the fields of semiconductor light-emitting devices, nonlinear optical materials, and photocatalysis due to its specific properties of light, electricity, heat, and magnetism. Morphology is the main factor affecting the performance of metal sulfides. Therefore, metal sulfides with different morphologies have been studied a lot. The multi-level nanostructures of metal sulfides show very high reactivity due to their unique structure. Workers pay wide attention. At present, people usually add surfactants to generate multi-level nanostructures, but the surfactants themselves can cause certain pollution to the environment. [0003] Graphene is composed of a single layer of sp 2 A hon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/08
CPCB01J27/04B01J35/399B01J35/39B01J35/23B01J35/51
Inventor 曾斌李叶林刘奇元
Owner HUNAN UNIV OF ARTS & SCI