As a new generation of artificial simulated enzymes,nanozymes can not only“simulate”the activity of natural enzymes,but also endow artificial enzymes with functions that“surpass”natural enzymes on the basis of combining the characteristics of nanomaterials,which is the product of multidisciplinary cross-integration.In this paper,the background and unique properties of nanozymes are introduced,various design and preparation ideas of nanozymes are sorted out from the aspects of“simulation”and“transcendence”of natural enzymes,the current application status and future research directions of nanozymes in the biomedicine,agriculture and food safety,environment,energy,and chemical engineering are summarized.

In the context of the new engineering discipline,with the transformation of educational concepts and continuous innovation in teaching methods,the traditional examination-oriented assessment method can no longer reflect the quality of talent cultivation in the field of new engineering.Inorganic chemistry,as a fundamental course for engineering majors,requires innovative assessment methods to adapt to updated educational concepts and teaching methods.By constructing a diversified assessment system,implementing stage assessments,utilizing information technology for assessments,implementing personalized assessments,establishing feedback mechanisms,and evaluating based on OBE(Outcome-Based Education)principles,we can cultivate high-quality engineering talents for society.

Unit operations of chemical engineering is a fundamental course of chemical engineering majors.It is the cornerstone for solving production problems in the chemical industry.The teaching innovation is carried out to meet the new requirements of the connotation development of new engineering disciplines for university engineering course.The innovative teaching concept is“grounded in engineering,strengthening foundations,building stepladders,and cultivating competencies”.Challenges in the teaching of chemical engineering courses need to be addressed,including difficulties in acquiring engineering knowledge,developing engineering thinking,and solving engineering problems.A“learning,thinking,and application advanced three-step”teaching mode is designed to systematically integrate learning enhancement,engineering thinking cultivation,and applied competency development.The restructured curriculum establishes three interconnected chains:a knowledge-progression chain for conceptual mastery,a problem-driven chain for analytical skill refinement,and a practice-immersion chain for contextualized engineering application.Innovative teaching practices present an advanced three-step driving three transformations:knowledge acquisition(from what to why),problem-solving(from exams to engineering challenges),and application(from imitation to innovation).Practice has proven that improvement of students’ academic performance and ability to solve complex engineering problems is obvious after teaching reform. The innovative practice of the curriculum has been widely praised by peers.It can provide reference and guidance for the teaching reform of similar professional courses.

Aiming to meet the requirements of“innovation,high-levelness,and challenge”,the core objective in curriculum teaching is to cultivate students’ scientific thinking abilities.Therefore,curriculum teaching should mainly focus on teaching students how to think,cultivating their scientific thinking abilities such as logical thinking,innovative thinking,and critical thinking.This article introduces some cases of the author cultivating students’ scientific thinking ability in Organic Chemistry teaching from aspects such as according to the characteristics of the course,making the most of teaching materials,and integrating scientific research into teaching based on the teacher’s leading role and the students’ subjectivity.

Under the“Three News”reform framework,the teaching articulation between senior high school chemistry and general chemistry is of great significance for the construction of first-class undergraduate majors and courses as well as the cultivation of high-quality undergraduate talents.By comparing the textbook contents of senior high school chemistry and general chemistry,we have determined that the teaching of general chemistry will adopt a learning task sheet-led,online and offline blended teaching mode.As a result,the teaching quality has been effectively improved,and the cultivation of students’ autonomous learning ability has been promoted.

Under the emerging engineering education background,in response to the challenges faced by the reform of physical chemistry courses in the cultivation of applied talents in the new energy materials and devices major,this paper proposes a teaching design approach based on the outcomes-based education(OBE)concept,combined with the practice of reconstructing teaching content and integrating resources using knowledge graph technology.By exploring the connecting role of industry-education integration in curriculum resource development,this paper demonstrates how to utilize knowledge graphs to correlate teaching resources and promote the renewal of teaching modes through industry-education integrated problem-based learning(PBL).The aim is to strengthen the “two properties and one degree” course characteristics,establish a novel teaching mode,and cultivate students’ abilities to solve complex problems and innovate.

In order to strengthen students’ understanding of abstract concepts include hydrogen bonds and coordination bonds covered in new university chemistry courses,and improve the scientific thinking training,we designed a comprehensive innovative experiment on tuning the performance of hydrogel materials by using hydrogen bonds and coordination bonds based on the outcome-based education.In this experiment,a series of hydrogel materials based on different internal interaction were prepared by controlling experimental parameter.The mechanical,electrical properties and intrinsic self-healing properties of these materials were characterized.Material performance differences caused by hydrogen bonds and coordination bonds,not only enhances students’ comprehension of relatively abstract concepts,but also stimulate their interests in scientific research,and cultivates their ability to apply theoretical knowledge in practical circumstances.This experiment is a beneficial attempt to train new talents for new quality productivity based on the outcome-based education concept.

At present,most of the chemicalengineeringexperiments commonly conducted are on a small scale,which cannot effectively train students’ abilities to solve the practical problems.Therefore,this paper combined the authors’ scientific research works,focused on the practical production and application,and comprehensively considered factors such as safety,controllability,environmental protection,and economic efficiency,took“scale-up of surfactant synthesis and application for water treatment(3-chloro-2-hydroxypropyl(long-chain-alkyl)dimethylammonium chloride)”as the theme,to design a scale-up chemical engineeringcomprehensive experiment,and a successfulscale-upapplication experiment was achieved for the synthesis with a scale of 3 kg and treatment of 90 L(～90 kg)of dye wastewater.By implementing this scale-up chemical engineering comprehensive experiment,students developed basic abilities to control the practical production reactions and conventional equipment.At the same time,it was beneficial to broaden students’ thinking,cultivate environmental awareness,and improve their comprehensive abilities to solve the practical problems and integrate applications.

The traditional method of “gas-liquid equilibrium phase diagram experiment oftwo-liquid system” in physical chemistry experiment uses Abbe refractometer to determine the sample composition, which has some prominent problems such as long experiment time, large amount of organic reagents and large experimental error, leading to poor experimental results. In this study, we try to introduce the gas chromatograph in the instrument analysis experiment, and improve the experiment scheme. Because the gas chromatograph has the characteristics of less sample amount, high sensitivity and high resolution efficiency, it can shorten the experiment time, reduce the amount of reagents, and reduce the error of the experiment to achieve good experimental results. Practice has proved that gas chromatography not only has the advantages of simple operation and good data results, but also can improve students’ comprehensive experimental ability and cultivate students’ innovation and professional quality. Through the comparison of the two methods, it is found that gas chromatography is a new method that conforms to the improvement and development direction of the experiment, and is suitable for popularization and use in other institutions of higher learning.

Solid alcohol is widely used in restaurant dining and tourist picnics due to its smoke-free,pollution-free,high combustion value,simple production,and convenient use.Flame reaction is an important experiment in chemistry textbooks,but it has the disadvantages of inconvenient display and unclear effect.This article studied the conditions for making solid alcohol from sodium stearate and calcium acetate,and compared the effects of the two curing agents on the appearance,burning time,burning odor,and residue after combustion of solid alcohol.The effect of adding different metal cations on the appearance of the prepared solid alcohol and the flame reaction during combustion were explored to improve the appreciation of solid alcohol.This popular science experiment is easy to operate,display and interactive,and can be used to improve the chemical scientific literacy of different groups.

The resource recovery and reuse for treating organic wastewater of solid waste is used to build a teaching situation,so that the students can collect various self-heating patches,use the residue to perform the degradation the dye wastewater,design experimental schemes,search the relationship between reaction rate and some parameters(e.g.temperature,concentration and catalyst),explore reactive species,analyze reaction mechanism,and finally use modern characterization techniques to explore the structural characteristics of waste residues.The whole experiment process is progressive step by step,from“reaction rate”to“reaction mechanism”,and finally to“structure-effect analysis”.The experimental mode combines student center with teacher guidance,and the experimental content integrates science and education,production and education,and ideological and political ideas of ecological civilization.The physical chemistry experiment project teaching system constructed in this way can enhance students’ innovation ability.

Grounded in the framework of flow theory,this study employed a quasi-experimental controlled method to conduct a teaching intervention with 68 chemistry normal students from a university.A mixed-methods approach integrating quantitative and qualitative analyses was adopted to systematically investigate the impact mechanism of immersive virtual environments(IVE)on teacher ethics learning.The findings revealed that the experimental group exhibited significantly higher levels of flow experience in IVE(M=4.614)compared to the control group(M=2.687,p=0.003),with a 9.8-point improvement in post-test teacher ethics knowledge scores(p=0.001).Qualitative analysis further demonstrated the experimental group’s marked advantages in dimensions such as situational immersion in chemistry-specific ethical decision-making(40%)and emotional resonance with professional responsibilities(36%).This study indicates that immersive technology provides a technology-enabled solution for chemistry normal students’ teacher ethics cultivation by establishing a three-dimensional synergy mechanism of“embodied experience-emotional connection-cognitive deepening”,offering empirical support for innovating teacher ethics education modes during the era of intelligent education.

The intelligent simulation basic chemistry experiment designed based on multi-channel logic judgment has the characteristics of high fault tolerance,strong interactivity,and timely feedback.Based on the virtual experiment platform and physical laboratory,integrating the OBE concept,a new three-dimensional teaching mode for basic chemistry experiment courses is constructed,which combines online and offline,virtual and real,and integrates theory and practice.Parallel class control teaching practice is adopted,and the teaching effect is significantly improved.The construction of intelligent simulation-based basic chemistry experiments and the application of new teaching modes in experimental courses have stimulated students’ interests in learning,cultivated their innovative thinking in experiments,improved the quality of basic chemistry experiment teaching,and explored new directions for the reform of basic chemistry experiment teaching.

A simple method is introduced for equipping a common spectrophotometer with data output and basic wavelength scanning capabilities.Without requiring the manufacturer’s matching data cable and software,only a USB-to-serial port converter cable is needed to successfully connect the spectrophotometer to a computer,enabling the computer to receive measurement data sent by the spectrophotometer.By combining an infrared tracking sensor to control the PRINT button of the spectrophotometer,absorbance data at various wavelengths can be automatically and continuously sent to the computer,thus achieving a basic wavelength scanning function.The modification method is convenient to implement,low in cost,and simple and easy to carry out,making it suitable for upgrading and modifying common manual UV-visible spectrophotometers and fluorescence spectrophotometers in a wide range of laboratories.

In the teaching of polymer physics, familiar examples from our daily lives,such as steaming buns,material adhesion and repair,were selected and integrated into the teaching process of polymer compatibility.This allowed students to learn the abstract concepts and knowledge points of polymer compatibility through these familiar life examples in a more intuitive way,achieving the goal of applying what they learn while also increasing their interests in learning.This approach has shown to be very effective in teaching.

Based on the outcome-based education philosophy and in view of the shortcomings of the current oilfield chemistry experiment project,such as old content,single type and insufficient comprehensive innovation,the scientific research achievements of teachers were introduced into the undergraduate experimental teaching in this paper,and a comprehensive innovative experiment on the preparation and performance evaluation of coalbed methane well interface enhancer was designed.In the process of teaching design and implementation,it was completely focus on student-centered and the following teaching design method was adopted,that contained autonomous experiment in close collaboration,independent implementation of experiments,flipped classroom teaching mode and integrated guidance of teachers with both teaching ability and practical ability.The“3+1+2”teaching implementation mode was proposed to cultivate the comprehensive application ability of the students.Based on the four rounds of teaching practice,the results show that the enthusiasm,autonomy,innovation,comprehensive analysis and collaborative expression ability of the students had been significantly improved,which also provides guidance for training the comprehensive application of innovative talents required by oil field enterprises.

The acid-catalyzed iodination of acetone is a classic complex reaction that is generally used in physical chemistry textbooks as a model reaction to study the kinetic properties of chemical reactions.To help students deepen their understanding of the reaction’s characteristics,this paper employs computational chemistry methods to investigate the molecular mechanism and kinetic properties of the reaction.The results indicate that the presence of acid is essential for the iodination of acetone,as it not only facilitates the isomerization of acetone to enol(the rate-controlling step)but also provides reactive species(H₂OI⁺)for the enol iodination.The computational results offer an intuitive physical image and quantitative insights to aid in understanding the iodination of acetone.The research methods used in this study help students recognize the importance of computational chemistry as a valuable tool for exploring the mechanisms and properties of chemical reactions.

As an independent innovation achievement in China’s chemical fiber industry from the 1970s to 1980s,polypropylene fiber marked a significant breakthrough in China’s high-tech chemical fiber field.From 1974 to 1987,China successfully achieved the industrial production of polypropylene fiber through basic applied research and two joint research projects,making it the only variety among the five major chemical fibers that was completely independently developed by China.The research and development of polypropylene fiber not only became a model of the close integration of scientific research and production and the transformation of scientific and technological achievements into productivity in China,but also a microcosm of the transformation of China’s scientific and technological work during this period.In this project,the Institute of Chemistry,Chinese Academy of Sciences provided solid theoretical and technical support for the research and development of polypropylene fiber through deep research on spinning physics,theinvention of the technology of processing aid for lowering processing temperature of polypropylene,the development of new resins,and the exploration of stable spinning processes.Focusing on the work of the Institute of Chemistry,this paper systematically examines the spinning physics research of the Institute and its participation in the research and development of polypropylene fiber through the excavation of archives and documents,objectively analyzes the roles and interactive relationships played by various units,and explores the transformation of China’s scientific and technological innovation and research work in the 1970s and 1980s,as well as the role played by the Chinese Academy of Sciences.The research results of this paper can provide a reference for China to realize high-level scientific and technological self-reliance in the new era.