Test method for ash content of graphene oxide

Abstract

The invention relates to a test method for ash content of graphene oxide, and belongs to the technical field of analysis and detection of the graphene oxide. The method is as follows: weighing an appropriate amount of graphene oxide powder, smoothly laying on the bottom of a crucible, dropwise adding concentrated sulfuric acid to a sample to completely carbonize the sample to black, heating at a certain temperature to totally disperse yellow smoke, after the yellow smoke is totally dispersed putting the sample in a muffle furnace for high temperature burning until black spots are disappeared, and finally weighing. The method solves the phenomenon in the ash burning process the graphene oxide bursts and overflows out of the crucible, is helpful to improve the veracity and stability of the test results of the ash content of the graphene oxide, and is worthy of popularization and application.

Description

Graphene oxide ash content detection method technical field The invention relates to the technical field of analysis and detection, and more specifically, relates to a method for detecting ash content of graphene oxide in which carbonization is carried out after high-temperature burning and then detection. Background technique Graphene oxide has a two-dimensional sheet structure similar to graphene, and the structural layer contains a variety of oxygen-containing functional groups, which is easy to combine with other materials, so it has attracted extensive attention. Ash refers to the residue after the substance is burned at high temperature in an oxygen or air atmosphere and undergoes a series of physical and chemical changes, and the organic components are volatilized. Ash is an important indicator to measure the purity of the substance. The traditional method of testing the ash content of a substance is to place the substance in a crucible and burn it at a high temper...

AI Technical Summary

Problems solved by technology

Therefore, in the sample preparation process, the accuracy can be guaranteed by direct burning of coal, but the accuracy is greatly reduced when applied to graphene oxide; and direct burning, graphene oxide will explode, while coal will not

Again, coal is denser and harder than graphene oxide, so the equipment of the above two methods is difficult to apply to the ash content determination of graphene oxide

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