Chapter 198 Master, what do you do?
"Mr. Xu, I think it is definitely not possible to apply it directly. The presence or absence of dopants will have a significant impact on the properties of nanotubes. My plan is to use the anodizing method based on , combined with the method of light reduction..."
Sui Feng was also listening to Ning Chen's analysis, thinking hard about something.
What Sui Feng meant by "lying flat" was not that he didn't really want to make progress, he just didn't want to compare with Ning Chen to make himself feel ordinary.
Sui Feng is quite concerned about his scientific research career. After all, whether he can successfully graduate with a PhD is related to his future employment.
After listening to Ning Chen’s description of the synthesis method, Sui Feng said before Xu Zhou could comment:
“I seem to understand that this method is indeed very suitable for the preparation of Ag+ doped TiO2 nanotubes. Experiment."
Both Ning Chen and Xu Zhou were a little surprised that Sui Feng could take the initiative to answer this time.
"Sui Feng, let me tell you the specific principles behind this."
Xu Zhou was happy to let Sui Feng talk more. After all, he couldn't mention Sui Feng in the future. , he could only think of the crystal he synthesized being blown away by the wind.
"Because if you want to dope TiO2 nanotubes with Ag+, it is definitely not possible to add Ag+ directly. Instead, you need to reduce Ag+ to a simple state and deposit it on the surface of TiO2 nanotubes. Under the condition of light, it can promote the reduction of metal ions. reaction, and this photoreduction method can be well combined with the anodizing method..."
Listening to Sui Feng's answer, Ning Chen and Xu Zhou both looked very pleased. expression.
"Yes, we are on to the point. Of course, it is just the principle of the light reduction method, and it is not that complicated. Sui Feng, what kind of light do you think is better?"
After Sui Feng thought for a while, he said:
"Wait a moment, I will use the scratch paper to do the math."
Sui Feng naturally didn't have Ning Chen's super verbal calculation ability, so there was no shame in using scratch paper for calculations.
Soon, Sui Feng got his result.
"According to the data we directly measured, the length of the TiO2 nanotube is about two microns. Substituting the wavelength data of the calculated light source, purple light should be the most appropriate."
Listen to Sui Ning Chen and Xu Zhou looked at each other and smiled at the answer given by Feng.
"Hey, Sui Feng, you have finally made some progress in the past two years." Xu Zhou said.
In the past two years, Sui Feng has always given Xu Zhou the impression that he is a student who has just passed the passing line.
Such students will not attract special attention from the teacher, but they will not hold the teacher back.
Just like chicken ribs, they are tasteless when eaten, and it feels a pity to throw them away.
Fortunately, Sui Feng didn't really learn anything from Ning Chen these days, he was still a little bit influenced by it.
Ning Chen was also a little pleased with Sui Feng's change. When he and Sui Feng were doing experiments together, Ning Chen sometimes even wanted to ask Sui Feng: What exactly does Master You do?
Of course, this is not because Sui Feng is bad, it's just that he and Ning Chen are used to doing experiments with those great masters, or academicians and professors in various majors. Even students are at the level of Qi Wan, a physics genius girl.
In comparison, Sui Feng will inevitably look very ordinary.
"Hey, Teacher Xu, in the past two years, you can finally praise me."
Sui Feng's words seemed a little sad, which made Xu Zhou feel a little bit, he Are you usually too mean to Sui Feng?
In the past two years, apart from using Sui Feng’s deeds as negative teaching material, Xu Zhou really rarely mentioned Sui Feng in front of others.
Thinking of this, Xu Zhou said: "Sui Feng, I'd better praise you more in the future. In fact, your performance is not bad, but it was overshadowed by Ning Chen."
"No, no, no, no, teacher Xu, if you praise me often, I won't get used to it. It's good to just keep it like this. I know that I am very ordinary, and I am very content to stay in this laboratory. ”
Although Sui Feng complained a little just now, Sui Feng is still quite satisfied with Xuzhou and this laboratory.
My treatment as a graduate student was much better than that of students in other laboratories. Not only did I not need to pay from home, I was able to save some savings.
As long as he can continue to embrace Ning Chen and Xu Zhou, the future will definitely not be too bad.
Of course, Sui Feng himself must work hard, because thighs are not something that can be hugged casually, and he must show a certain value.
In the following time, Xu Zhou, Ning Chen, and Sui Feng successfully prepared Ag-doped TiO2 nanotubes according to this method.
The entire experiment process experienced some minor twists and turns, but the three of them quickly solved these problems without wasting too much time on it.
After testing, they found that the improved TiO2 nanotube array did have better photocatalytic activity.
However, they are not satisfied with the existing experimental results, because this is not the only way to prepare Ag-doped TiO2 nanotubes, and other methods may be used to obtain better results.
When Xu Zhou, Ning Chen, and Sui Feng were summarizing the experiment, Sui Feng put forward his own ideas.
“I think we can also try to prepare Ag-doped TiO2 nanotubes through hydrothermal method and physical and chemical deposition method. On the basis of hydrothermal method, it is not suitable to continue to use photoreduction There is no other method to deposit Ag, but we can easily add ethylene glycol in an alkaline environment to deposit the silver ions in silver nitrate..."
For this plan proposed by Sui Feng, Xu Zhou and Ning Chen also expressed their agreement.
Actually, Ning Chen had some other plans in mind, but Sui Feng’s plan was something Ning Chen thought he could try, so he just finished this plan first and then tried other plans.
After another stage of experiments, the newly synthesized Ag-doped TiO2 nanotubes by the three people indeed have some better properties.
"Yes, the distribution of Ag particles in TiO2 nanotubes prepared in this way is very uniform, allowing the nanomaterials to show a more powerful catalytic degradation rate. Sui Feng, you have made a good decision this time A great achievement.”
“It’s just average. Compared with Teacher Xu and Researcher Ning, I’m still far behind.”
Sui Feng also learned how to behave from Ning Chen. Humility, Sui Feng is still a bit cute like this.
At this stage of the experiment, it seems that there is nothing more that can be done.
Just when Xu Zhou wanted to ask Ning Chen and Sui Feng if they were considering solving the problem, Ning Chen said:
"Teacher Xu, Brother Sui, I have another method that I want to try."< br>
Hearing Ning Chen’s words, Xu Zhou and Sui Feng were a little surprised.
"Ning Chen, do you have other methods?" Xu Zhou asked.
Because everyone has tried all the common methods for preparing TiO2 nanotube arrays before, if we continue to conduct experiments, we can only come up with some new methods.
At this time, even Xu Zhou, an expert in nanomaterials, did not think of any other methods to try.
“Yes, I think we can try it and use the ultrasound-assisted chemical route to complete the deposition of Ag.”
Hearing the term “ultrasound-assisted chemical route”, Sui Feng had a confused expression on his face, and Xu Zhou was also a little confused.
(End of this chapter)