Start as a top student and move towards the stars and the sea

"Mr. Xu, I think it is definitely not possible to apply it directly. The presence of dopants will have a significant impact on the properties of nanotubes. My plan is to combine the anodic oxidation method with the photoreduction method. method……"

Sui Feng was also listening to Ning Chen's analysis, thinking hard about something.

Sui Feng's so-called "laying down" doesn't mean that he doesn't really want to make progress, he just doesn't want to compare with Ning Chen to make himself feel ordinary.

Sui Feng is still more 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 experiment of Ag+-doped TiO2 nanotubes."

Ning Chen and Xu Zhou were both 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, when he mentioned 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 had very pleased expressions on their faces.

"Yes, we are on to the point. Of course, it is just the principle of light reduction method, and it is not that complicated. Sui Feng, what kind of light do you think is better?"

Sui Feng thought for a while and said:

"Wait a minute, I'll do the math on scratch paper."

Sui Feng naturally did not have Ning Chen's superior 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 TiO2 nanotubes is about two microns. Substituting the wavelength data of the calculated light source, purple light should be the most appropriate."

Listening to the answer given by Sui Feng, Ning Chen and Xu Zhou looked at each other and smiled.

"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 this 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 that he was usually too mean to Sui Feng.

In the past two years, apart from using Sui Feng's deeds as a negative example, 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 was 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 could also 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 method to deposit Ag. But we can easily add ethylene glycol in an alkaline environment to deposit the silver ions in silver nitrate..."

Xu Zhou and Ning Chen also agreed with the plan proposed by Sui Feng.

In fact, Ning Chen had some other plans in mind, but Sui Feng's plan was one that 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 great contribution this time."

"It's just average. Compared with Teacher Xu and Researcher Ning, I'm still far behind."

Sui Feng also learned to be humble from Ning Chen. Sui Feng like this is still somewhat cute.

At this stage of the experiment, it seemed that there was nothing more that could 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, Senior Brother Sui, there is another method I want to try."

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 brand-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 to use ultrasound-assisted chemical route to complete the deposition of Ag."

When Sui Feng heard the term "ultrasound-assisted chemical route", Sui Feng had a confused expression on his face, and Xu Zhou was also a little confused.