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Method for producing graphite oxide and device for producing graphite oxide

A technology of fossil and graphite, applied in the field of preparing graphite oxide, can solve the problem of insufficient and effective removal of graphite oxide ions and impurities, and achieve the effects of excellent dispersibility, suppression of explosion, and simplification of the process

Active Publication Date: 2018-04-24
IDT INT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, even this method cannot sufficiently and effectively remove ions and impurities contained in graphite oxide

Method used

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  • Method for producing graphite oxide and device for producing graphite oxide
  • Method for producing graphite oxide and device for producing graphite oxide
  • Method for producing graphite oxide and device for producing graphite oxide

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Embodiment

[0069] In Examples of the present invention, the concentration of remaining metal ions in the prepared graphite oxide was measured by using an inorganic elemental analysis (ICP) method, and then compared. The concentrations of the remaining metal ions in graphite oxide (from which impurities were removed by conventional filter press method or centrifugation) and in graphite oxide (from which impurities were removed by using the filter membrane device of the present disclosure) are shown in Table 1 below. The concentration of the remaining metal ions. In Examples of the present invention, inorganic element analysis was performed by using an ICP-AES device (iCAP-6000SERIES, Thermo electron). Pretreatment was performed by using 3 mL of hydrochloric acid, 1 mL of nitric acid, and 1 mL of hydrofluoric acid. Samples containing 0.1 g or more were collected by using Teflon containers. The primary dilution ratio is 25 mL, and the secondary dilution ratio is 50 mL.

[0070] [Table 1]...

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Abstract

The present disclosure relates to a method for preparing graphite oxide and an apparatus for preparing graphite oxide, the method comprising: preparing a graphite slurry comprising graphite and sulfuric acid; injecting an oxidizing agent into the graphite slurry to oxidize the graphite preparing a graphite oxide slurry; mixing a peroxide solution into the graphite oxide slurry; and obtaining graphite oxide from the graphite oxide slurry by using a filter membrane device.

Description

technical field [0001] The present disclosure relates to a method for producing graphite oxide and an apparatus for producing graphite oxide. Background technique [0002] In 2004, Professor Andre Geim of the University of Manchester and others succeeded in first mechanically exfoliating graphene from graphite by using the "scotch tape method", and discovered graphene by using the exfoliated graphene after studying the quantum Hall effect. excellent electrical conductivity. In 2008, researchers such as James Hone of Columbia University confirmed the excellent strength of graphene. In the same year, researchers including Alexander Balandin of the University of California, Riverside measured the thermal conductivity of graphene to be 5,300 pW / mpK, which is twice that of carbon nanotubes. [0003] To prepare graphene, exfoliation of graphite oxide by applying thermal shock, graphite exfoliation by Prof. Andre Geim et al., surface growth, hydrazine reduction on graphite oxide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/198B01D37/00
CPCC01B32/23B01J8/002B01J8/006B01J19/1862B01J19/1893
Inventor 洪尚填严成勋李明信
Owner IDT INT
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