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Stable isotope <13>C skeleton labeled graphite and graphene oxide, preparation method, and application of graphene oxide

A stable isotope, graphene technology, applied in the field of graphene, can solve problems such as impurities, and achieve the effect of simple and feasible synthesis method

Pending Publication Date: 2021-06-25
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the graphene materials prepared by these methods usually contain impurities and need to be processed through complex purification processes such as oxidation, acidification, annealing, etc.

Method used

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  • Stable isotope &lt;13&gt;C skeleton labeled graphite and graphene oxide, preparation method, and application of graphene oxide
  • Stable isotope &lt;13&gt;C skeleton labeled graphite and graphene oxide, preparation method, and application of graphene oxide
  • Stable isotope &lt;13&gt;C skeleton labeled graphite and graphene oxide, preparation method, and application of graphene oxide

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preparation example Construction

[0026] According to the present invention 13 The preparation method of the graphite oxide marked by C skeleton, the method comprises the steps:

[0027] (i) Drill the graphite electrode along the axis of the electrode and fill the hole 13 C amorphous carbon powder;

[0028] (ii) Fill step (i) with 13 C. The graphite electrode of amorphous carbon powder is packed in a DC arc discharge reaction furnace as a discharge anode; (iii) under vacuum conditions, in the presence of hydrogen and helium, the discharge cathode is contacted with the discharge anode, and the arc is ablated The discharge anode described in step (ii);

[0029] (vi) Collect the deposits on the discharge cathode, pulverize the collected deposits to obtain stable isotopes 13 C skeleton labeled graphite.

[0030] According to the method of the present invention, the present invention for graphite electrode in step (i): 13 The mass ratio of the C amorphous carbon powder is not particularly limited, and can var...

Embodiment 1

[0046] (i) A graphite electrode with a diameter of 1 cm and a length of 12 cm is drilled along the electrode axis. The diameter of the hole obtained is 6 mm and the depth is 11.8 cm. The mass of the graphite electrode after drilling is 10.30 g. Fill the hole with 1.74g of 13 C amorphous carbon powder;

[0047] (ii) Fill step (i) with 13 The graphite electrode of C amorphous carbon powder is put into a DC arc discharge reaction furnace as a discharge anode, and vacuumized, and then vacuumized again after introducing 600 Torr argon gas to replace the residual air;

[0048] (iii) Refill 100Torr argon as a protective gas, contact the discharge cathode with the discharge anode, adjust the current to 135A, and the power-on time is 2 minutes;

[0049] (iv) After the heating is completed, vacuumize, feed 600Torr helium, and then vacuumize again to replace the residual argon;

[0050] (v) Charge 200Torr hydrogen and 200Torr helium as the reaction atmosphere, adjust the discharge cur...

Embodiment 2

[0059] (i) A graphite electrode with a diameter of 1 cm and a length of 12 cm was drilled along the electrode axis. The diameter of the obtained hole was 6 mm and the depth was 11.8 cm. The mass of the graphite electrode after drilling was 6.86 g. Fill in the hole according to the mass ratio of 1:1 13 C and 12 C Amorphous carbon powder, charged 13 The mass of C amorphous carbon powder is 0.84g.

[0060] (ii) Fill step (i) with 13 C The graphite electrode of amorphous carbon powder is put into a DC arc discharge reaction furnace as a discharge anode, and vacuumized, and then 600 Torr of argon gas is introduced and then vacuumed again to replace the residual air.

[0061] (iii) Fill again with 100 Torr argon as a protective gas, connect the discharge cathode to the discharge anode, adjust the current to 135A, and the power-on time to 2 minutes.

[0062] (iv) After the heating is completed, vacuumize, feed 600Torr helium gas, and then vacuumize again to replace the residual a...

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Abstract

The invention provides stable isotope <13>C skeleton labeled graphite, stable isotope <13>C skeleton labeled graphene oxide, a preparation method, and application of the stable isotope <13>C skeleton labeled graphene oxide. The preparation method provided by the invention of the stable isotope <13>C skeleton labeled graphite comprises the steps of (i) drilling a graphite electrode along the axial direction of the electrode, and filling <13>C amorphous carbon powder in the hole; (ii) putting the graphite electrode filled with the <13>C amorphous carbon powder in the step (i) into a direct-current arc discharge reaction furnace to serve as a discharge anode; (iii) under a vacuum condition and in the presence of hydrogen and helium, enabling a discharge cathode to be in contact with a discharge anode, and performing arc ablation on the discharge anode in the step (ii); and (vi) collecting sediments on the discharge cathode, and crushing the collected sediments. The graphene oxide provided by the invention can be used for isotopic tracing and quantitative research.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a stable isotope 13 C-skeleton labeled graphite and stable isotopes 13 C-skeleton-labeled graphene oxide, its preparation method and application of graphene oxide. Background technique [0002] Graphene oxide is an important precursor for the synthesis of graphene. Its surface contains a large number of oxygen-containing active functional groups, such as carboxyl, hydroxyl, epoxy, carbonyl, etc., and it has a huge specific surface area, good biocompatibility and easy The advantages of surface modification, as well as its specific electronic and optical properties, have been widely used in photovoltaic cells, biosensing, wastewater treatment, heat dissipation materials, disease diagnosis, bacterial inhibition, anti-virus, photothermal and photodynamic therapy of tumors, and gene delivery and drug delivery and other biomedical, electronic devices and aerospace fields. With the developmen...

Claims

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Application Information

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IPC IPC(8): C01B32/205C01B32/21C01B32/198G01N21/65G01N23/207G01N27/62G01N33/00
CPCC01B32/205C01B32/21C01B32/198G01N23/207G01N21/65G01N27/62G01N33/0098
Inventor 常雪灵董金泉陈凌云
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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