National First Prize!It's them

Author:Beijing University of Chemical Time:2022.09.21

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A few days ago, the 3rd National College Student Chemistry Experimental Innovation Design Contest has come to an end. 90 teams from 90 colleges and universities across the country participated in the competition. After multiple rounds of preliminary evaluation and defense, the team of three students composed of three classmates composed of Lu Xinyu, Zhang Xiangchuanlan, and Song Zhiyuan of our school (instructor: Professor Xu Qinghong and Li Yang Assistant Experimental Experiment) of the School of Chemistry, and finally won the first prize.

Today, the school's official Weibei miniature and joint chemistry of the Youth League Committee of the School of Chemistry launched an exclusive interview with the first prize team. Come and listen to their secrets of success.

Never give up, always believe in yourself

Full of motivation and believe that you are the most basic element of doing one thing. The group members who won the first prize of the National College Student Chemistry Experimental Innovation Design Contest were all from the 2004 Class of Chemistry of the School of Chemistry. All kinds of opportunities gathered them to form this competition team.

The group member Zhang Xiangchuanlan said: "We did not expect to achieve such a good result. At first we just wanted to participate in the school's chemistry experiment competition. The qualifications to participate in the North China competition. In the next competition, through our joint efforts, we finally won the first prize in the North China Division and the first prize of the National Finals. Thank you very much for Xu Qinghong and Mr. Li Yang for their careful guidance. "

Zhang Xiangchuanlan

Lu Xinyu

Song Zhiyuan

After understanding their competition experience, it is not difficult to find that this success is not accidental. In the about six months of the competition cycle, they have also had a low emotional time. "Before each preparation, we will conduct 4-5 simulation defense, and the requirements for competitions at different stages are not the same. We also need to modify the participating works repeatedly to further improve the quality of the work." Nevertheless, everyone never thought of giving up, but re -adjusted the participation status and communicated with the mentor in a timely manner, and eventually participated in the competition in a fuller state.

The picture shows the PPT Homepage

It is better to plan without rain, and dig out well without thirst

In order to prepare for the school -level chemistry experiment competition in May this year, Lu Xinyu and Zhang Xiangchuanlan began to discuss the subject with the instructor in December 2021 in December 2021. Combining the experience of previous years, students and mentors finally determined the direction of the competition as "popular science", requiring the audience to be widely scope, and can conduct multi -level science popularization for people of different ages.

These two members spent a lot of time collecting almost all popular science experiments, but they soon discovered a problem. Some popular science experiments have the extremes of two directions -a type of science popularization experimental operation is simple and revealed The scientific principles are relatively simple, only suitable for science popularization for primary and secondary school students, and the content of college students appears shallowly; although the experimental phenomenon of another type of popular science has a strong visual impact effect, the operation of the experiment is extremely cumbersome and it is not suitable for going out of the laboratory to carry out development Essence

Considering these two aspects, Lu Xinyu and Zhang Xiangchuan Lan actively communicated and discussed with the mentors, shared their own ideas, carefully listened to the teacher's suggestion, and eventually used the interface reaction mechanism in the reaction container of the independent design and processing. Combined with the effects of infiltration diffusion and surface tension, the controllable interface preparation of colorful molecular agglomerations was successfully achieved.

The picture shows the team's defense

Recalling that time, Lu Xinyu said with a smile: "This stage took about a month. During this period, we communicated with the mentor many times and finally determined this subject. We are glad to start preparing this competition in advance. If In the second semester, prepare for it, and the results are likely to reduce the quality of the final work because of insufficient experimental preparation. "He believes that planning ahead is the cornerstone of success, which can help us have a leading possibility of growing on the track.

The picture shows the information (part) that the group members determine the topic (part)

Bao Jianfeng comes from the grinding, the fragrance of plum blossoms comes from bitter cold

Because this is a brand new topic, few people have done this work, the process of starting the experiment is not very smooth.

At the beginning of the spring semester of 2022, the competition team made the product growth on the surface of the sand core as the goal, and used the customized reactor for the exploration experiment of reaction conditions. First of all, the group members determined the concentration of time, temperature, and reaction as the key factors of experiments. The exploration test was divided into three major groups according to the principle of a single variable, and an inquiry response of not less than ten times was designed.

The team spent about half a month. On the basis of completing the designed experiments, analyzed the phenomenon generated by each test. After comparing the phenomenon one by one, the reaction temperature and concentration were finally concluded that the reaction temperature and concentration were experimental. In the decisive role, the reaction temperature can often determine the success of the experiment directly.

On this basis, the group members used the best experimental conditions for the best experiment to replace the reaction solution from organic-inorganic system to inorganic-inorganic system, and finally prepared organic inorganic hybrid polymers, silicate, hydroxide, etc. Colorful and versatile molecules gathering body.

The picture shows different appearances

The picture shows different appearances of metal silicate molecules

"In the process of collecting different experimental phenomena, we also need to take pictures and videos of the product growth process. A total of no less than thirty reactions were made before and after. In this way, in the preparation cycle of the competition, we will stay and improve the experimental phenomenon in the laboratory in the laboratory during the preparation cycle of the competition or holiday. " Combine proportional, can you keep the clouds in the clouds and loneliness if you are persistent and resistant to loneliness. Instructor evaluation

Xu Qinghong: "Faced with challenges, I cleverly conceived strange fruits; carefully prepared for the battle, not afraid of strong fighting for victory. This is a team that does not accept losses and will always win."

Li Yang: "Success is 99%of the sweat plus 1%inspiration; what is more important than clever experimental design ideas is the hard work and unremitting efforts of the teammates!"

The picture shows a screenshot of the online awards ceremony

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The "National College Student Chemistry Experimental Innovation Design Contest" is a national event hosted by the National Experimental Teaching Demonstration Center of the Ministry of Education and the Ministry of Education. The aim of the contest is to consolidate the basic knowledge, basic theory and basic skills of college students, strengthen college students' problems, analyze and solve problems, cultivate college students' innovative awareness, innovation ability and innovation spirit, and to establish a exchange of exchanges to show the ability of college students' practice and innovation The platform promotes the reform of the practice teaching model of colleges and universities in my country. The competition is tied as the "National College Student Chemistry Experimental Invitational Tournament" as the highest -level chemicals competition of colleges and universities in my country.

The picture shows our school's winning certificate in the trial in North China

In order to select outstanding works on behalf of our school to participate in this competition, the Chemical Experimental Teaching Center of the School of Chemistry started the school contest in February. After strict reviews of all 66 participating works, three participating teams were selected on behalf of our school to participate in the "Third National College Student Chemistry Experimental Innovation Design Contest North China Tour", and finally won 2 first prizes, 1 item, 1 The second prize. Among them, the team guided by Professor Xu Qinghong and Assistant Li Yang's experimental artist was qualified to participate in the National Finals.

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