Chapter 425

He never expected that qinluo could successfully prepare graphene.

"Is it potassium permanganate?"

Li Min asked in horror.

"Well, the oxidation of graphite is enhanced by potassium permanganate, which makes the plane structure of carbon atoms in graphite gradually become plane macromolecules with positive charge." Qin Luo said with a smile.

Hearing Qin Luo's words, Li Min suddenly realized that, as a double degree expert in physics and chemistry, his knowledge accumulation had already reached a frightening level, which was just unexpected before. However, after Qin Luo's prompt, the whole preparation process became clear in an instant.

"So sulfate ions and sulfuric acid molecules gradually enter the graphite layer to form sulfuric acid graphite intercalation?" Li Min asked.

"Well, the low quality of graphene prepared by redox reaction is largely due to the fact that sulfate ion floats on the surface and does not enter the graphite layer. Using potassium permanganate as catalyst to produce planar macromolecules can directly solve this problem." Qin Luo nodded and said.

At this moment, the whole scene is silent, including Li Min, all people are staring at Qin Luo.

They could hardly believe their ears.

If they didn't see it with their own eyes, they wouldn't believe it.

The whole academic circle did not solve the problem, so Qin Luo solved it with a little potassium permanganate.

After a long time, Li Min was the first to regain his mind. He took a look at Qin Luo. His eyes were full of complexity.

It is this half aged child who has solved the problems that have plagued physics for many years.

Thinking of this, Li Min sighed deeply, arched his hand at Qin Luo, and said with a smile, "listening to your words is better than reading ten years' books. I'm convinced."

"Er Don't say that, professor. I'm just lucky Qin Luo said shyly.

Qin luoshuai's face turned red when he was praised by a famous professor.

Good luck?

Li Min shrugged his shoulders and laughed. On the way to physics experiment, he did not rule out the factor of good luck, but the premise of good luck was based on the corresponding strength.

If you don't have the strength, don't even know how to make graphene by using potassium permanganate as catalyst.

"Good luck is also part of the strength, Qin has this strength." Li Min said with a smile.

Hearing Li Min's words, Qin Luo's face appeared a brilliant smile.

"By the way, let's start testing the quality of graphene." Li Min said.

After this period of cooling, the graphene in the beaker has solidified, and it is time to test the quality.

Qin Luo nodded, carefully took out the graphene from the beaker, and put it into the infrared spectrometer.

A few minutes later, an infrared spectrum appeared.

Absorption peak: a wide and strong absorption peak appeared in the range of 3000-3700cm-1.

Absorption peaks appeared at 1723, 1382, 1221 and 1055cm-1 And the stretching vibration peak - C = O appears.

However, in the O-H deformation vibration peak of 1382, the stretching peak becomes very weak, which proves that graphene has been successfully prepared.

And the prepared graphene has high quality, even compared with the graphene prepared by mechanical stripping method.

"Gulu ~" looking at the infrared spectrum data in front of him, Li Min carefully swallowed his saliva.