Sulfydryl-modified graphene oxide and preparation method thereof

A technology of graphene and graphene sheets, applied in the field of nanomaterials, to achieve the effects of broadening the synthesis means and application fields, less time and energy consumption, and simple preparation process

Active Publication Date: 2015-04-29
ZHEJIANG TANGUSHANGXI MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there is still relatively little work on mercapto-containing graphene oxide and its preparation

Method used

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  • Sulfydryl-modified graphene oxide and preparation method thereof
  • Sulfydryl-modified graphene oxide and preparation method thereof
  • Sulfydryl-modified graphene oxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 2 mL of a 100 mg / mL graphene oxide solution dissolved in DMF and a powder particle size of 40 μm in a 25 mL flask, add 12 mL of deionized water and 300 μL of triethylamine to it, and add 20 mg of thiol during 20 minutes of nitrogen gas flow. Sodium acetate, stirred and reacted at room temperature for 2 days to obtain thioester-modified latent sulfur graphene oxide. The obtained product was washed with deionized water and stirred for 24 hours to obtain mercapto-modified graphene oxide. The obtained mercapto-modified graphene oxide product was characterized by XPS spectrum, infrared spectrum and Raman spectrum. The XPS spectrum of the mercapto-modified graphene oxide ( figure 2 ) and the XPS spectrum of graphene oxide ( figure 1 ) for comparison, it can be found that 1.06% of sulfur elements appeared in the mercapto-modified graphene oxide product, indicating that the introduction of mercapto groups may be successful; the infrared spectrum of the mercapto-modified...

Embodiment 2

[0021] Take 2 mL of 100 mg / mL graphene oxide solution dissolved in DMF in a 25 mL flask, add 12 mL of deionized water and 300 μL of triethylamine to it, add 60 μL of thioacetic acid during 20 minutes of blowing nitrogen gas, and incubate at 40 °C The reaction was stirred for 2 days to obtain thioester-modified latent sulfur graphene oxide. The obtained product was washed with deionized water and stirred for 24 hours to obtain mercapto-modified graphene oxide.

Embodiment 3

[0023] Take 2 mL of 100 mg / mL graphene oxide solution dissolved in DMSO in a 25 mL flask, add 12 mL of deionized water and 300 μL of triethylamine to it, add 60 μL of thioacetic acid during 20 minutes of blowing nitrogen gas, and incubate at 40 °C The reaction was stirred for 2 days to obtain thioester-modified latent sulfur graphene oxide. Add 100 mL of 5% dilute hydrochloric acid to the obtained product, then wash with deionized water, and stir for 24 hours to obtain mercapto-modified graphene oxide.

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Abstract

The invention discloses a sulfydryl-modified graphene oxide and a preparation method thereof. According to the sulfydryl-modified graphene oxide, a modified graphene oxide product is obtained by introducing sulfydryl to a graphene oxide lamellar structure. The preparation method comprises the following steps: mixing a graphene oxide solution, a solvent and triethylamine evenly; adding thiocarboxylic acid or sulfo-carboxylate under argon protection and reacting at 10-70 DEG C for 1-7 days to obtain a sulfydryl-modified latent sulfur graphene oxide; centrifugally washing the sulfydryl-modified latent sulfur graphene oxide with deionized water to obtain the sulfydryl-modified graphene oxide; or mixing the sulfydryl-modified latent sulfur graphene oxide with diluted hydrochloric acid evenly, and centrifugally washing with the deionized water to obtain the sulfydryl-modified graphene oxide. The sulfydryl-modified graphene oxide is simple in preparation process, safe, controllable, and low in time consumption and energy consumption; and according to the prepared sulfydryl-modified graphene oxide, the synthesis means and the application field of graphene derived materials and sulfocompounds are further expanded.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a mercapto-modified graphene oxide and a preparation method. Background technique [0002] Since the advent of monolithic graphite in 2010, its excellent electrical, mechanical, optical, thermal and other properties have attracted widespread attention from scholars all over the world, and a large number of graphene-based materials and work have emerged. As the precursor of graphene, graphene oxide is the most important intermediate for the macroscopic assembly and modification of graphene materials. Most of the macro-assembly materials fibers, films, and aerogels that have been realized so far are prepared through graphene oxide intermediates. [0003] Mercapto compounds are a class of compounds with one or more SH groups. They play an important role in the artificial synthesis of life sciences and natural products. They are important industrial raw materials and are widely used in...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 高超彭蠡金昱李嘉辰魏杨扬郑耀臣
Owner ZHEJIANG TANGUSHANGXI MATERIAL SCI & TECH
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