C-14-marked graphene and synthetic method thereof

A technology of C-14 and synthesis method, which is applied in the direction of graphene, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of unclear mechanism and uncertainty of nanomaterials retaining their own characteristics, and achieve good results. The effect of reference significance, easy availability of raw materials, and high recovery rate

Active Publication Date: 2014-04-23
NANJING UNIV
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  • Description
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Problems solved by technology

[0007] The mechanism of direct labeling of carbon nanomaterials with non-carbon radionuclides in the prior art is unclear, and the use of coupling agents to indirectly label carbon nanomaterials may lead to the inability to determine whether the labeled nanomaterials will retain their own characteristics. The invention discloses a C-14-labeled graphene and a synthesis method thereof, respectively adopting dodecylamine and C-14-labeled phenol as a carbon source and a source of C-14 nuclides, and synthesizing a C-14-labeled by a chemical method Graphene

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  • C-14-marked graphene and synthetic method thereof

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Embodiment 1

[0028] Present embodiment 1 uses dodecylamine and C-14 labeled phenol to synthesize C-14 labeled graphene, and its steps are:

[0029] (1) Accurately weigh 5g of dodecylamine powder, dissolve it in 20ml of absolute ethanol, weigh 1.590g of ferrous chloride tetrahydrate and 0.900g of ammonium dihydrogen phosphate and dissolve it in 80ml of ultrapure water (dihydrogen phosphate The molar ratio of ammonium to ferrous chloride tetrahydrate is 1:1.02, and the molar ratio of ammonium dihydrogen phosphate to dodecylamine is 1:3.45). In a water bath at 45°C, mix the anhydrous ethanol solution of dodecylamine with the mixed solution of ferrous chloride and ammonium dihydrogen phosphate, collect the solid product by centrifugation, and dry it in vacuum at 40°C for 36 hours. The dried solid product was ground into a powder and placed in a crucible.

[0030] (2) Use a pipette to measure 800 μl of ethanol solution of C-14-labeled phenol (the total radioactivity is 11.99mCi), drop it onto ...

Embodiment 2

[0034] Present embodiment 2 uses dodecylamine and C-14 labeled phenol to synthesize C-14 labeled graphene, and its steps are:

[0035] (1) Weigh 3.62g of dodecylamine powder, dissolve it in 20ml of absolute ethanol, weigh 1.71g of ferrous chloride tetrahydrate and 0.900g of ammonium dihydrogen phosphate and dissolve it in 80ml of ultrapure water (dihydrogen phosphate The molar ratio of ammonium to ferrous chloride tetrahydrate is 1:1.1, and the molar ratio of ammonium dihydrogen phosphate to dodecylamine is 1:2.5). In a water bath at 50°C, mix the anhydrous ethanol solution of dodecylamine with the mixed solution of ferrous chloride and ammonium dihydrogen phosphate, centrifuge to collect the solid product, and dry it in vacuum at 50°C for 24 hours. The dried solid product was ground into a powder and placed in a crucible.

[0036] (2) Use a pipette to measure 400 μl of ethanol solution of C-14-labeled phenol (the total radioactivity is 5.995mCi), drop it onto the powder in t...

Embodiment 3

[0040] This embodiment 3 uses dodecylamine and C-14 labeled phenol to synthesize C-14 labeled graphene, and its steps are:

[0041] (1) Weigh 7.25g of dodecylamine powder, dissolve it in 20ml of absolute ethanol, weigh 1.55g of ferrous chloride tetrahydrate and 0.90g of ammonium dihydrogen phosphate and dissolve it in 80ml of ultrapure water (dihydrogen phosphate The molar ratio of ammonium to ferrous chloride tetrahydrate is 1:1, and the molar ratio of ammonium dihydrogen phosphate to dodecylamine is 1:5). In a water bath at 55°C, mix the anhydrous ethanol solution of dodecylamine with the mixed solution of ferrous chloride and ammonium dihydrogen phosphate, centrifuge to collect the solid product, and dry it in vacuum at 60°C for 12 hours. The dried solid product was ground into a powder and placed in a crucible.

[0042] (2) Use a pipette to measure 100 μl of ethanol solution of C-14-labeled phenol (the total radioactivity is 1.499mCi), drop it onto the powder in the cruci...

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Abstract

The invention discloses C-14-marked graphene and a synthetic method thereof, and belongs to the field of synthesis of graphene. The method comprises the following steps: (1) in water bath, adding a dodecyl amine ethanol solution into a mixed solution of ferrous chloride tetrahydrate and ammonium dihydrogen phosphate, centrifugally collecting the obtained solid product, carrying out vacuum drying, grinding the dried solid product into powder and placing the powder into a crucible; (2) adding a C-14-marked phenol ethanol solution into the powder obtained in the step (1), uniformly mixing, carrying out vacuum drying, taking out the crucible, placing the crucible into a tube furnace and calcining under the protection of argon; (3) taking out the generated black powder product, adding the black powder product and concentrated hydrochloric acid into a hydrothermal kettle together, heating after sealing, carrying out centrifugation to obtain the black solid product, washing, flushing by absolute ethyl alcohol, and carrying out vacuum drying to obtain the C-14-marked graphene powder. When the original characteristics of the graphene are almost completely kept, the graphene synthesized by the method disclosed by the invention is marked with a C-14 isotope and adopts a simple and rapid process.

Description

technical field [0001] The invention belongs to the synthesis field of graphene, more specifically a C-14 marked graphene and a synthesis method thereof. Background technique [0002] Graphene, as a single-layer sheet structure material composed of carbon atoms, is the thinnest but also the strongest material known in the world. It has unique thermal, mechanical and electrical properties. Its applications in nanocomposites, transistors, and nanodiagnostics have attracted widespread attention. Since Manchester's research group obtained single-layer graphene for the first time in 2004 and won the 2010 Nobel Prize in Physics, research and applications related to graphene have achieved remarkable rapid development. Using graphene as a keyword to search the SCI database, in 2004 there were only dozens of documents on graphene, and by 2012 there were as many as 6,000. The market research company Future Markets released a report titled "Graphene Global Market" in 2011, which esti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y30/00B82Y40/00C01B32/184
Inventor 毛亮胡茂杰郭向可潘丙才高士祥
Owner NANJING UNIV
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