Graphene oxide ash content detection method
A technology of ash content detection and graphene, which is applied in the field of analysis and detection, can solve the problems of accuracy discount, high density, difficult to measure ash content of graphene oxide, etc., and achieve the effect of improving accuracy and stability and avoiding pollution
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example 1
[0044] The method for detecting the ash content of graphene oxide according to an embodiment of the present invention comprises the following preparation steps: 1. Take 0.5080g graphene oxide powder and spread it on the bottom of a high-purity quartz crucible; 2. Add 5ml of concentrated sulfuric acid dropwise to Graphene oxide is completely carbonized and blackened; 3. After carbonization, put the crucible into the heating jacket, raise the temperature to 180°C at a speed of 10°C / min or less, and heat at 180°C for 3 hours to dissipate the yellow smoke; 4. Disperse the yellow smoke The exhausted crucible was placed in a muffle furnace at 900°C, raised to 900°C at a rate of 5°C / min, and burned for 2 hours until there were no black spots.
[0045] image 3 It is the thermal stability curve of graphene oxide after carbonization and heating at 180°C for 3 hours. From the figure, we can see that after graphene oxide is carbonized and heated until the yellow smoke disappears, it will...
example 2
[0052] A method for detecting the ash content of graphene oxide according to the present invention comprises the following preparation steps: 1. Take 1.0176g of graphene oxide powder and spread it on the bottom of a high-purity quartz crucible; 2. Add 15ml of concentrated sulfuric acid dropwise to graphite oxide The olefin is completely carbonized and turns black; 3. After carbonization, put the crucible into the heating jacket, raise the temperature to 250°C at a speed of 10°C / min or less, and heat at 250°C for 1.5h to dissipate the yellow smoke; 4. Dispel the yellow smoke The final crucible was placed in a muffle furnace, heated to 700°C at a rate of 5°C / min, and burned at 700°C for 4 hours until there were no black spots.
example 3
[0054] A method for detecting the ash content of graphene oxide according to the present invention comprises the following preparation steps: 1. Take 1.5362g of graphene oxide powder and spread it on the bottom of a high-purity quartz crucible; 2. Add 25ml of concentrated sulfuric acid dropwise to graphite oxide The ene is completely carbonized and turns black; 3. After carbonization, put the crucible into the heating jacket, raise the temperature to 300°C at a rate of 10°C / min or less, and heat at 300°C for 2 hours to dissipate the yellow smoke; 4. After the yellow smoke is exhausted Place the crucible in a muffle furnace, heat up to 800°C at a rate of 5°C / min, and burn at 800°C for 3 hours until there are no black spots.
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