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Method for detecting impurity elements and content thereof in graphene oxide

A detection method and impurity element technology, which is applied in the detection field of impurity elements and their content in graphene oxide, can solve the problems of large detection error and unstable base peak, and achieve the effect of simple operation and good repeatability

Active Publication Date: 2020-06-30
新疆烯金石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention proposes a new detection method for impurity elements and their content in graphene oxide, which can solve the problems of unstable base peaks and large detection errors when GD-MS detects graphene oxide

Method used

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  • Method for detecting impurity elements and content thereof in graphene oxide
  • Method for detecting impurity elements and content thereof in graphene oxide
  • Method for detecting impurity elements and content thereof in graphene oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0070] S10: Use a small medicine spoon to take a small amount of high-purity aluminum powder and fill it into a high-purity tantalum block. After compacting with a manual powder briquette, it can be put into a glow discharge mass spectrometer for detection. Parallel detection is performed 5 times and the detection data is saved. And calculate the average value of the detection results.

[0071] S20: Weigh 0.03-0.5g graphene oxide, and record the mass M of the sample GO , put the sample in a vacuum drying oven for pretreatment for 4-12h, after the pretreatment is completed, take it out, weigh it, and record the mass M of the sample after the pretreatment is completed G , and then put it into a 10-25cm agate crucible, and grind it for 10min-30min. Then weigh 0.3-10g high-purity aluminum powder and put it into an agate crucible, and record the quality M of high-purity aluminum powder taken by weighing Al , and then grind for 30-60min, after the two are evenly mixed, the sample ...

Embodiment 2

[0093] S10: Use a small medicine spoon to take a small amount of high-purity aluminum powder and fill it into a high-purity titanium block, compact it with a manual powder briquette, put it into a glow discharge mass spectrometer for detection, perform 5 parallel detections, and save the detection data (detection The data is shown in Table 1), and the average value of the detection results is calculated (the average value is shown in Table 1).

[0094] S20: Weigh 0.0334g graphene oxide (sponge sample), place the sample in a vacuum drying oven for pretreatment for 10h, after the pretreatment is completed, take it out, weigh it, record the mass of the sample after the pretreatment is 0.03231g, and then Put it into a 15cm agate crucible, grind for 20 minutes, then weigh 0.9671g of high-purity aluminum powder, put it into the agate crucible, and grind it for 45 minutes. After the two are evenly mixed, a powder sample is obtained.

[0095]S30: Use a small medicine spoon to take a s...

Embodiment 3

[0098] S20: Use a small medicine spoon to take a small amount of high-purity aluminum powder and fill it into a high-purity titanium block, compact it with a manual powder briquette, put it into a glow discharge mass spectrometer for detection, perform 5 parallel detections, and save the detection data (detection The data is shown in Table 4), and the average value of the detection results is calculated (the average value is shown in Table 4).

[0099] S20: Weigh 0.1034g of graphene oxide (powder sample), place the sample in a vacuum drying oven for pretreatment for 8h, after the pretreatment is completed, take it out, weigh it, record the mass of the sample after the pretreatment is 0.1001g, and place it again Put it into a 15cm agate crucible, grind it for 10 minutes, then weigh 0.8988g of high-purity aluminum powder, put it into the agate crucible, and grind it for 35 minutes. After the two are evenly mixed, a powder sample is obtained.

[0100] S30: Use a small medicine sp...

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Abstract

The invention relates to a method for detecting impurity elements and content thereof in graphene oxide. The method comprises the following steps: S10, detecting each element and contents thereof in high-purity aluminum powder by adopting glow discharge mass spectrometry; S20, carrying out drying pretreatment on the graphene oxide, grinding, adding high-purity aluminum powder, grinding, and uniformly mixing to obtain a sample; and S30, detecting the sample by adopting the glow discharge mass spectrometry in the step S10 to obtain detection data, and carrying out quantitative analysis to obtainimpurity elements in the graphene oxide and the content of the impurity elements. By using a doping method, graphene oxide is doped into high-purity aluminum powder for GDMS detection, and a to-be-detected sample is pretreated, so that the to-be-detected sample is sputtered and diffused into plasma more easily, and the problem of relatively large detection error caused by relatively poor C / O element detection limit of GDMS is solved.

Description

technical field [0001] The invention belongs to the technical field of graphene oxide detection, and in particular relates to a detection method for impurity elements and content thereof in graphene oxide. Background technique [0002] Graphene is a new single-atom-thick material composed of carbon atoms. An ideal graphene material has high light transmittance, ultra-high carrier mobility, high specific surface area, and extremely high intralayer thermal conductivity. And a variety of excellent characteristics such as extremely high Young's modulus, has quickly become a research hotspot in many fields such as materials science, physics, and chemistry. Researchers add graphene to the matrix to be improved, and improve the performance of the matrix through the excellent characteristics of graphene. Impurity elements are the key factors that affect the quality of graphene itself and the enhancement effect of the matrix. Therefore, how to effectively analyze and measure impurit...

Claims

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Application Information

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IPC IPC(8): G01N27/68
CPCG01N27/68
Inventor 鲁娜王秀娟杨新伟卢科伟肖丽梅张丽娟丁继鸿钟小勇
Owner 新疆烯金石墨烯科技有限公司
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