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A method for synthesizing nano-diamonds from anthracene nitration product powder at low temperature and low pressure

A nano-diamond, low-temperature and low-pressure technology, applied in diamond, nanotechnology and other directions, can solve the problems of low reaction temperature and pressure, high risk, etc., and achieve the effects of less pollution, simple reaction conditions, and simple and fast preparation process.

Active Publication Date: 2018-04-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem: In order to solve the high-risk problems in the production and preparation of nano-diamond materials, so that nano-diamonds can be produced more safely, quickly, simply, and environmentally friendly, the present invention provides a low-temperature and low-pressure synthesis of nano-diamonds from anthracene nitration product powder Methods
Its reaction temperature and pressure are currently the lowest in the world

Method used

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  • A method for synthesizing nano-diamonds from anthracene nitration product powder at low temperature and low pressure
  • A method for synthesizing nano-diamonds from anthracene nitration product powder at low temperature and low pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the mass ratio of 1:20, 0.3 g of the nitration product of raw material anthracene was dissolved in 2 mol / L sodium hydroxide solution, and after ultrasonication for 10 minutes, the sealed cover was put into a hydrothermal reaction kettle, heated to 200 degrees Celsius in an oven, and kept 10 hours;

[0018] After the reaction kettle is cooled, take it out, pour it into a petri dish, seal it and put it in an oven at 50 degrees Celsius to heat for 48 hours;

[0019] Take out the petri dish, collect the dried powder, and use an agate mortar to crush the powder to collect;

[0020] The collected powder is heated to 400 degrees Celsius using a tube furnace and kept for 8 hours, and the collected powder is subjected to the steps of heating evaporation, pickling, neutralization and suction filtration to obtain the reaction product nano-diamond;

[0021] Using a transmission electron microscope to observe the reaction product nanodiamonds, the results are as follow...

Embodiment 2

[0023] According to the mass ratio of 1:25, 0.3 g of the nitration product of raw material anthracene was dissolved in 2 mol / L sodium hydroxide solution, and after electromagnetic stirring for 10 minutes, the sealed cover was put into the hydrothermal reaction kettle, and the oven was used to heat to 200 degrees Celsius. keep for 10 hours;

[0024] After the reaction kettle is cooled, take it out, pour it into a petri dish, seal it and put it in an oven at 50 degrees Celsius to heat for 48 hours;

[0025] Take out the petri dish, collect the dried powder, and use an agate mortar to crush the powder to collect;

[0026] The collected powder is heated to 400 degrees Celsius using a tube furnace and kept for 8 hours, and the collected powder is subjected to the steps of heating evaporation, pickling, neutralization and suction filtration to obtain the reaction product nano-diamond;

[0027] The reaction product nano-diamond was observed with a transmission electron microscope, a...

Embodiment 3

[0029] According to the mass ratio of 1:28, 0.3 g of the nitration product of raw material anthracene was dissolved in 2 mol / L sodium hydroxide solution, and after electromagnetic stirring for 10 minutes, the sealed cover was put into the hydrothermal reaction kettle, and the oven was used to heat to 200 degrees Celsius. keep for 10 hours;

[0030] After the reaction kettle is cooled, take it out, pour it into a petri dish, seal it and put it in an oven at 70 degrees Celsius to heat for 48 hours;

[0031] Take out the petri dish, collect the dried powder, and use an agate mortar to crush the powder to collect;

[0032] The collected powder is heated to 400 degrees Celsius using a tube furnace and kept for 8 hours, and the collected powder is subjected to the steps of heating evaporation, pickling, neutralization and suction filtration to obtain the reaction product nano-diamond;

[0033] The reaction product nano-diamond was observed with a transmission electron microscope, a...

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Abstract

A low-temperature low-pressure nanometer diamond synthesizing method from anthracene nitration product powder is disclosed. The method includes steps of 1) mixing 0.3 g of the anthracene nitration product powder into a sodium hydroxide solution having a concentration of 2 mol / L, and performing ultrasonic dispersion to obtain a uniform liquid, 2) injecting the mixed liquid into a Teflon hydrothermal reactor having a size of 50 mL, 3) putting the Teflon hydrothermal reactor into a stainless steel clamp, putting into a high-temperature drying oven, setting 200 DEG C and heating for 10 h, 4) taking out after a sample is completely cooled, pouring the liquid into a culture dish, putting into a drying oven the temperature of which is 60 DEG C and evaporating until dryness, 5) collecting dried powder in the culture dish and grinding into powder in an agate grinding bowl, and 6) subjecting the collected powder to heating evaporation, washing with an acid, neutralization, suction filtration for separation to obtain nanometer diamond. The method can be widely used for fields of polishing materials, biological standardization and medicine release materials.

Description

technical field [0001] In the field of nano-manufacturing and synthesis, the present invention describes a low-temperature and low-pressure synthesis method from anthracene nitration product powder to nano-diamond. Background technique [0002] Nanodiamond is a nanoscale particle formed by sp3 hybridization of carbon, which is an allotrope with graphite. Nanodiamond materials have broad application prospects in polishing materials, biological calibration, and drug delivery. Nanodiamond has extremely small size (diameter 2-10nm), stable chemical characteristics, high-strength physical characteristics, extremely high specific surface area and excellent biocompatibility. Nanodiamond is considered to be an extremely important new material in the 21st century. [0003] At present, the preparation method of nano-diamond still uses the sealed detonation method of TNT (trinitrotoluene) and EDX (RDX), which is extremely dangerous and violent. Therefore, the application of nano-dia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/26B82Y40/00
CPCC01P2004/04C01P2004/64
Inventor 孙立涛苏适马青沈昱婷
Owner SOUTHEAST UNIV