Chapter 423 Preparation of Graphene by Oxidation-Reduction Method
Tesla's corporate headquarters...
Qin Luo had already put on his overalls and walked into the laboratory.
"Professor Qin, here are the materials of our two-day experiment, you can take a look." Li Min handed a stack of materials to Qin Luo with a smile.
For things that can help him, Qin Luo will not be polite, he smiled, took the information and looked it up carefully.
But in the next second, Qin Luo frowned.
"Professor Li, are you using the mechanical stripping method?"
Graphene is prepared by mechanical exfoliation, and the quality of the produced graphene is very high. The exfoliated graphene is generally hundreds of nanometers or micrometers of graphene sheets, the yield is very low, and the transfer is also very challenging.
"Well, composite materials have high requirements on the quality of graphene. In order to ensure safety, we chose the mechanical exfoliation method." Li Min said.
石墨烯的制备，常用的方法有5种，1氧化还原法，2.机械剥离法3.液相剥离法4.低压化学气相沉积法5.常压化学气相沉积法。
The five preparation methods have their own advantages and disadvantages, among which the oxidation-reduction method has the highest preparation efficiency, but the quality of the prepared graphene is relatively low.
However, the mechanical exfoliation method is difficult to prepare and the efficiency is slow, but the quality of the prepared graphene is the highest.
However, in order to combine graphene and oxides, the requirements for graphene itself are extremely high, which is why Li Min chose the mechanical exfoliation method.
"Professor Qin, which method do you want to use?" Li Min asked.
"I want to prepare graphene through redox."
Uh……
As soon as the words came out, all four were shocked.
Everyone's eyes widened, staring at Qin Luo.
Redox method, the quality of graphene prepared in this way is too low to be composited with other materials at all.
There is another more important point, oxidation-reduction reaction is in the field of chemistry, Qin Luo still wants to get involved in chemistry.
It's impossible even if you think about it?
"Student Qin, are you joking?" Ou Chen asked after hesitating for a moment.
To be honest, he is not optimistic.
"En." Qin Luo nodded and said, "As far as the current situation is concerned, this is the fastest way."
It's almost fast, but it's really doing useless work!
Li Min really didn't want to hit Qin Luo, but now he had to say: "Professor Qin, although the oxidation-reduction efficiency is indeed very high, I have to tell you that it is impossible for graphene prepared by oxidation-reduction to compare with other graphene." Material compounding."
"Maybe it is possible?" Qin Luo shrugged his shoulders and said, "How do you know if you don't try?"
"Ah~", Li Min sighed and said slowly, "If you need help, just let me know."
"If possible, I need some graphite powder, potassium permanganate, concentrated sulfuric acid, hydrochloric acid..."
Hearing Qin Luo's words, the corner of Li Min's mouth twitched.
He could tell that Qin Luo was determined to use the oxidation-reduction method to prepare graphene.
But what the hell is potassium permanganate?
Li Min has never heard that it is necessary to prepare graphene!
"Oh~" Li Min sighed helplessly, and waved to the assistant beside him: "Bring what Professor Qin needs."
The assistant nodded and turned to leave.
When he reappeared, he already had a trolley in his hand.
The trolley is full of various chemical raw materials.