"I mean, just let the institute send someone casually, how can you work hard, why did Xiao Liu go. ”

Saying that, Chu Hao hurriedly asked Director Zhu to sit down, and by the way, asked Meng Mao to pour Director Zhu a cup of tea.

Director Zhu hugged the teacup and said with a smile: "They want to come over and touch you, the youngest Nobel laureate in the future, the fairy spirit, but I said that I haven't seen you for so long, so let them stop fighting for me as an old guy, I'll come to the fairy spirit first." ”

Chu Hao didn't know how much shock the news of his research on graphene decomposition technology caused by the research institute.

Although last year, Chu Hao had already shown his excellence beyond ordinary people and even ordinary geniuses, but they didn't dare to think that Chu Hao was already about to touch the door of the Nobel Prize this year.

As scientific researchers, Chu Hao's Nobel Prize is far more deeply touched and shocked than ordinary people.

Chu Hao was stunned and laughed, shook his head and said with a smile: "Director Zhu, you also make fun of me." ”

"I'm really not open, I am happy to see you research a Nobel Prize-level scientific research project. Director Zhu said with some excitement, and even tears appeared in the corners of his eyes.

Although the resistance and pressure on Chinese scientific researchers in the international arena are not as deep as Shi Lao's.

However, as one of the first batch of scientific researchers to study abroad during the reform and opening up, he was undoubtedly desperate.

The entire scientific and technological level of the Western world is nearly 100 years ahead of China, and you must know that China was poor at that time, it was really poor.

At that time, the annual per capita income of China was only more than 100 US dollars, while the developed countries such as the United States and France were 20,000 US dollars.

This feeling is like people suddenly breaking into a group of countries where all of them are millionaires, and the gap is even bigger, and that kind of inner inferiority complex and panic cannot be suppressed no matter what.

This is also why, after the reform and opening up, China suddenly changed drastically, everyone yearns for the Western world, and feels that the moon in the Western world is rounder than China.

Really, that gap is called despair.

At that time, no one dared to say that Huaxia could catch up with the Western world, and as for the Nobel Prize, don't even think about it.

But now, Chu Hao is really about to win the Nobel Prize back to Huaxia, how can he not be excited, which is why he has to grab Xiao Liu and come to Yanjing in person.

Chu Hao was silent, whether it was from Shi Lao or Director Zhu, Chu Hao could feel the helplessness and despair at that time, but he also felt from them that there was a spirit of struggle called never giving up.

The reason why Huaxia can only become what it is now, including that it will become stronger in the future, is not because people like Shi Lao and Director Zhu did not give up in the face of despair and setbacks, but turned pressure into motivation, which created the current Huaxia.

If Huaxia is like Tianzhu, and everyone's greatest wish is to immigrate to the United States to be a code farmer, then Huaxia is really finished, and these people are the backbone of Huaxia.

"Okay, let's not talk about these old sesame seeds and rotten grains, let's talk about graphene decomposition technology. Director Zhu rubbed his eyes and said differently.

"Then let me tell you about it, the mechanical stripping method I used before, the advantages and disadvantages are obvious, the advantage is that the preparation cost is very low, easy to learn, and the graphene quality obtained by this method is very good, with few defects and excellent performance. However, the disadvantages are also obvious, the size of the graphene obtained is very small, generally between 10-100um, and it is completely impossible to prepare on a large scale. Chu Hao said slowly.

Director Zhu nodded, when he came, he also took this problem into account, Chu Hao's method of decomposing graphene is indeed simple, and the consumption cost is outrageously low, but the efficiency is too low.

It can be said that it is only suitable for the discovery of graphene, and it is almost impossible to produce it on a large scale.

"So, I'm going to go redox. Chu Hao said.

Director Zhu and Meng Mao's eyes flashed with a hint of surprise, redox method is actually not an uncommon technology, and it can even be said to be a very common technology.

Redox is a method of removing harmful substances from water with oxidants or reducing agents.

For example, chlorine, ozone or chlorine dioxide are used to oxidize organic matter, and low-valent iron and manganese are oxidized to high-valent iron and manganese with air or chlorine to precipitate from water.

However, the key thing is that this is a chemical method, that is, a method that only chemists will use, and Chu Hao is obviously a physicist, how could he think of using the redox method, and looking at Chu Hao's appearance, he seems to be very sure.

You know, if you are not very proficient in chemistry, let alone have the confidence to experiment with chemical methods, you can't even think of it.

After all, the phrase interlacing is like separating mountains, which is completely applicable in academic circles, and even the difference between the major categories and the subclasses is greater than the difference between the next mountain.

Meng Mao opened his mouth and wanted to speak, but Chu Hao had already established an omnipotent influence in his heart, so he didn't speak.

But Director Zhu couldn't help but ask suspiciously: "How did you think of using the redox method, this should be a chemical method, you are still proficient in chemistry?"

After speaking, Meng Mao also pricked up his ears and looked straight at Chu Hao with his eyes.

You must know that if Chu Hao really uses redox to produce graphene on a small scale, then Chu Hao can no longer be described as proficient in chemistry.

It can even be said that this is even more surprising than Chu Hao's decomposition of graphene.

If you use tape to separate graphene, there may be an element of luck in the eyes of others.

And using the redox method to decompose graphene, let alone large-scale decomposition, this is definitely a real ability, and even surpassed the vast majority of scientists at that time.

After all, while studying graphene decomposition technology, there are also materials scientists who studied chemistry, and some people's academic abilities are also among the top in the world's chemical community, but they have not decomposed graphene, which doesn't mean that Chu Hao's academic level in chemistry is far above those people.

Thinking of this, Director Zhu and Meng Mao's eyes changed, Chu Hao's achievements in materials science and physics are not to mention, and now if there is such a strong academic level in chemistry, wouldn't it be too rebellious.

Chu Hao smiled a little embarrassedly, he also knew what kind of shock he would bring to Director Zhu and them by using the redox method to decompose graphene.

However, judging from the current conditions, I am afraid that the redox method is the most suitable for decomposing graphene.

As for the chemical vapor deposition method, solvent stripping method, epitaxial crystal growth method, etc., it is not very suitable.

"I'm not proficient, but I only know a little, and as for why I use redox, it's because other methods are not suitable. ”

Speaking, Chu Hao directly explained: "The chemical vapor deposition method uses a simple tubular deposition furnace with nickel as the substrate to introduce carbon-containing gases, such as hydrocarbons, which are decomposed into carbon atoms at high temperatures and deposited on the surface of nickel to form graphene, and through slight chemical etching, the graphene film and nickel sheet are separated to obtain a graphene film. ”

"The chemical vapor deposition method can meet the requirements of large-scale preparation of high-quality graphene, but the cost is high and the process is complex, so it is not suitable for use now. ”

"The principle of the solvent stripping method is to disperse a small amount of graphite in the solvent to form a low-concentration dispersion, and use the action of ultrasonic waves to destroy the van der Waals force between the graphite layers, at which time the solvent can be inserted into the graphite layer to peel off layer by layer to prepare graphene. ”

Chu Hao paused, and then said: "This method will not destroy the structure of graphene like the redox method, and can prepare high-quality graphene. I have also found that highly directional pyrolysis graphite, thermally expanded graphite, and microcrystalline synthetic graphite are suitable for the preparation of graphene by solvent exfoliation. The solvent stripping method can produce high-quality graphene, and the entire liquid phase stripping process does not introduce any defects on the surface of the graphene. ”

"But the problem is that the production is too low. ”

As soon as Chu Hao finished speaking, Director Zhu couldn't help but interrupt: "You said that the redox method will destroy the structure of graphene?"

Chu Hao nodded, and then said with a smile: "That's true, but it's not that there is no solution, Director Zhu, you wait for me to finish." ”

"The redox method is relatively good in the preparation process and relatively safe in the preparation process, and the preparation cost is low and easy to realize, it is the best way to prepare graphene, and even a stable graphene suspension can be prepared, which solves the problem that graphene is not easy to disperse. ”

"Redox method refers to the reaction of natural graphite with strong acids and strong oxidizing substances to produce graphite oxide, which is prepared into graphene oxide by ultrasonic dispersion, and the addition of reducing agent to remove oxygen-containing groups on the surface of graphite oxide, such as carboxyl group, epoxy group and hydroxyl group, to obtain graphene. ”

"The disadvantage of the redox method is that the macro preparation is easy to bring waste liquid pollution and the prepared graphene has certain defects, such as topological defects such as five-membered rings and seven-membered rings or structural defects with OH groups, which will lead to the loss of part of the electrical properties of graphene, so that the application of graphene is limited. ”

"But I have experimented with a new type of reducing agent that can remove oxygen-containing genes without binding to nitrogen-containing functional groups, so that they can be doped in graphene. ”

After speaking, Chu Hao looked at Director Zhu and Meng Mao.

The two of them still looked dumbfounded, and they didn't know if they were still consuming what Chu Hao said, or if their brains were still incomprehensible for the time being.

After a few breaths, Director Zhu and the two eased up, Director Zhu sighed, and then said faintly: "Some people outside say that you are a person who is born to know, and I think they are talking nonsense, but when I heard you say this today, I think this sentence is true." ”

Meng Mao also nodded, he had consulted a lot of papers on graphene recently, but he had never heard any of the methods Chu Hao said just now.

Seriously, if it weren't for Chu Hao, he really didn't know that graphene had so many decomposition methods.

However, it is normal for him not to know, if he knew, then graphene would not have been decomposed by other scientists a long time ago, and there would be nothing to do with Chu Hao. ’

But for what Chu Hao said, especially those chemical terms, he can only understand six of the seven tricks, and he doesn't know anything, after all, he is from a physics background.

He felt that Chu Hao's words should be listened to by Yin Yulian, after all, Yin Yulian was born in chemistry, and she should be able to understand it.

However, he was still a little strange, he didn't know where Chu Hao was doing the experiment.

After thinking about it, Meng Mao didn't come up with a reason, so he could only use the redox method, which was the same as the mechanical peeling method, which Chu Hao had studied a long time ago, but it was only now shown.

"Director Zhu, don't say that, I just know a little bit more than others. Chu Hao waved his hand again and again and said.

However, his appearance, if Li Lingsu sees it, I am afraid that he will laugh at him to death, obviously he got it from the system, but Chu Hao's face is not red and he is not out of breath when he can say this.

This cheeky kung fu is quite admirable.

"Otherwise, in this case, I'll show you what kind of graphene is produced by the redox method. Chu Hao said.

Hearing this, Director Zhu nodded, "That's fine, let's see how the graphene produced is, in this way, it will be easy to arrange future production tasks." ”

After speaking, Director Zhu suddenly smiled, "To be honest, I originally thought that it would take a lot of trouble to produce it, but before I came, I was still thinking about how many people would have to be arranged to decompose enough graphene." ”

This is not a lie, although Ling Shuang is a genius, but he doesn't know anything about scientific research, and when he said this to Director Zhu, he couldn't understand it, Director Zhu was still afraid that Chu Hao was going to use his method of tearing tape to produce graphene, or not tearing tape, but other methods that were also equally troublesome.

In that case, he really doesn't know how many people he has to arrange to produce graphene, it's really a big headache to think about.

Now Director Gao basically doesn't care about the affairs of the institute, and the transfer and arrangement of these personnel are his responsibility, if Chu Hao needs too many people, it will inevitably affect other research work in the institute.

But hearing Chu Hao say this, he felt that the stone in his heart should be put down, you must know that in fact, all the materials produced by chemical methods will not be too troublesome.

The chemical method is nothing more than adding various elements, and then stirring and separating, which is much simpler than tearing tape by hand.

For example, the production of medicines, and even the production of beverages, are all produced in the same way as chemical materials, and the cost of these things is actually ridiculously low.

It's just that it's been hyped up for various other reasons.

However, Chu Hao's brows suddenly furrowed, "It seems that there is no suitable research room in the institute." ”

Meng Maoleng paused for a moment, and then shook his head, "I'm afraid there is no equipment in the institute that Teacher Chu said." ”