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Chinese Journal of Chemical Education  
  Chinese Journal of Chemical Education--2022, 43 (22)   Published: 18 November 2022
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Chinese Journal of Chemical Education. 2022, 43 (22): 0-0.
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Chinese Journal of Chemical Education. 2022, 43 (22): 129-129. ;  doi: 10.13884/j.1003-3807hxjy.2022080080
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Chinese Journal of Chemical Education. 2022, 43 (22): 17-17.
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Peptide Chemistry in Cosmetics

LIAO Yan-Yan, MENG Jiao-Long, JIANG Xue-Feng
Chinese Journal of Chemical Education. 2022, 43 (22): 1-11. ;  doi: 10.13884/j.1003-3807hxjy.2022060106
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With the progress of science and technology and industry promotion, people continue pursuing beauty from its origins, maintaining it from its longevity and triggering it from its mechanisms. Numerous peptides, which have been demonstrated to have unique biological promoting or inhibiting effects in the human body, are also widely applied in cosmetics as a result. This paper analyzed the chemical structures of bioactive peptides in cosmetic, and described their physiological actions mechanisms by focusing on their different effects.
Curriculum-Teaching Materials-Assessment

Development and Utilization of “Course Ideology and Politics” Educational Resources
in General Chemistry Under the Vision of Education Modernization

ZHANG Ying, LIU Song-Yan, ZHOU Yi-Bo, JIAN Wen-Ping, JIA Qiong
Chinese Journal of Chemical Education. 2022, 43 (22): 12-17. ;  doi: 10.13884/j.1003-3807hxjy.2021040069
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Under the pattern of the great ideological and political education, the improvement of the information-based “course ideology and politics” teaching system would be promoted by the development of modern information technology, which makes the resources of the ideological and political education more colorful, the manifestation forms more flexible and diverse, the update and application more rapid and convenient, and provides an important guarantee for the smooth development of teaching activities. Taking the “course ideology and politics” construction of general chemistry as an example in this paper, we elaborate how to utilize the advanced information and new media technology to fully develop the ideological and political education resources contained in general chemistry and deeply integrate them with the teaching of professional knowledge, so as to provide a better service to the fundamental task of “cultivating people by virtue”.

Teaching Reform and Practice for Coatings Formulation Design Course
Under the Outcome-Based Education Framework

DING Yong-Bo, GAO Fei, SHU Jin-Bing, SHEN Liang
Chinese Journal of Chemical Education. 2022, 43 (22): 18-25. ;  doi: 10.13884/j.1003-3807hxjy.2022020094
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In order to achieve teaching objectives of coatings formulation design course, the concept of outcome-based education (OBE) had been introduced into the teaching reform of the course. That is to say, coatings formulation design course was designed, organized, implemented and evaluated based on expected teaching objectives. The specific reforms are as follows. Firstly, the expected teaching objectives of the course were formulated according to our school’s coating major students’ training orientation.Then the teaching processes were optimized on the basis of the expected teaching objectives, which include the choice of teaching content, and the strengthening of students’ dominant role in the teaching implementation, and the reform of teaching methods. Finally, a reasonable evaluation system was constructed for expected teaching objectives. Although some achievements have been made in the teaching of coatings formulation design course under OBE framework, the construction of this system still needs to be further improved and updated.
Theory Teaching

Practice and Exploration of Online Teaching of General Chemistry:
Electron Configuration for Atoms

YAO Ping-Ping
Chinese Journal of Chemical Education. 2022, 43 (22): 26-30. ;  doi: 10.13884/j.1003-3807hxjy.2021070053
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The inorganic chemistry teaching team of East China University of Science and Technology, set up general chemistry online courses on Wisdom Tree platform and QQ groups as the auxiliary. In the two main lines of general chemistry, the microstructure of matter as an important role, determines the macro and micro properties of matter. Taking electron configuration for atoms as an example, through the big data support and interactive communication section of Wisdom Tree platform, the learning situation of students in the three learning links of “pre-class, in-class, after-class” and the three feedback analysis of class teaching effect of “live interaction, chapter test and final exam” is timely tracked and analyzed. The accumulated experience in online course may offer reform opportunity for online and offline blended learning.

Applying Research-Based Learning to Improve the Teaching Quality of
Theoretical Course:Polymer Materials

WANG Han-Wen, JIANG Kai-Xin, GAO Chang-You
Chinese Journal of Chemical Education. 2022, 43 (22): 31-38. ;  doi: 10.13884/j.1003-3807hxjy.2022030142
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The course polymer materials is an important learning content for the major of polymer materials and engineering, but its complex knowledge system brings many difficulties to the course description. In order to better complete the teaching objectives of the course and realize the comprehensive cultivation of students’ thinking ability and scientific research quality, a large number of interactive, discussion and research teaching methods are used in the teaching process. Among them, 4~5 students are allocated into a study team in the research-based learning task. The team is asked to independently select the types of polymer materials that are common in life, and discusses with teachers to determine the material types. In the process of completing this task, the team should first analyze and determine the main chemical compositions of the polymer materials through course knowledge, product description, and appearance, etc. Next, modern detection and analysis methods or self-made research methods are applied to identify the chemical structure of the material. Third, according to the application field, the physical structure, performance and functions of the polymer materials are detected and analyzed. Finally, all the data are analyzed to draw logistic conclusion by referring to literatures. Through this goal-driven approach, the students are guided to complete research projects independently. This research-based learning method greatly mobilizes the initiative of students, improves the enthusiasm of all students to participate in course discussion and knowledge-learning, and further expands students’ knowledge boundary.
Experiment Teaching

Comprehensive Innovative Experiment: Synthesis and Characterization of
Water-Soluble Fluorescent Anti-Counterfeiting Ink YVO4:Eu3+ Nanomaterials

PENG Yu, LI Chun-Guang, PAN Qing-Zhi, HUA Jia, SHI Zhan
Chinese Journal of Chemical Education. 2022, 43 (22): 39-43. ;  doi: 10.13884/j.1003-3807hxjy.2021070147
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The results of frontier scientific research are introduced into the course of synthesized experiment for material chemistry: YVO4:Eu3+ nanomaterials were synthesized with the condition of microwave radiation assisted heating, and the nanomaterials were characterized. The aqueous sol of the material shows strong fluorescence with UV excitation, which can be used as fluorescent ink for printing and writing in the field of security and anti-counterfeiting. The experiment candeepen students’ attention to the new material research, stimulate students’ interests in scientific research, cultivate students’ innovative ability and independent learning ability while cultivating students’ practical experiment ability.

Discussion and Improvement for Preparation of Adipic Acid Through Oxidation of
Cyclohexanol by Potassium Permanganate

CHENG Shao-Ling, HAN Cong, LIU Yan-Hua, JIA Qing-Zhu
Chinese Journal of Chemical Education. 2022, 43 (22): 44-48. ;  doi: 10.13884/j.1003-3807hxjy.2021060124
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Being as a classic item of fundamental organic chemistry experiment course in universities, the experiment for adipic acid preparation is usually carried out through oxidation of cyclohexanol by potassium permanganate. However, because of the bursting out of reactants and yellow products phenomenon appeared during the students operating, experiment effects were often not very well. In this present work, six problems occurred frequently during the synthesis process were analyzed and discussed deeply. Also, some solution approaches were proposed and the improved experimental project was further designed. The practice result indicated that this new method could make greater improvement with the experimental rate of > 65% and products of high purity.

Innovation and Practice of Large-Scale Instrument Training System Under Background of
“Emerging Engineering Education”: Scanning Electron Microscopy

ZHAO Peng, YU Chuan-Ming
Chinese Journal of Chemical Education. 2022, 43 (22): 49-54. ;  doi: 10.13884/j.1003-3807hxjy.2022040306
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In view of the limitations of the conventional large-scale instrument training system, such as inaccurate positioning, insufficient content and outdated programs, combined with the concept of “Emerging Engineering Education” talent training, and based on the open sharing, research-oriented, cultivation-based, safe and efficient large instrument training policy, we fully exploit the value of large-scale instruments and equipment, and release the potential of scientific and technological resources. We have established a new training system of remote training, practical training, applicational training and real-time supervision with scanning electron microscopy (SEM) as the main focus, forming a closed-loop and efficient training management mode for large-scale instruments, which has certain promotional and referential value.

Improved Experiments in Physical Chemistry: Application of Modified Belousov-
Zhabotinskii Oscillation Chemical Reaction in Food Detection

ZONG Li-Na, LIU Ye, ZHENG Yun-Xiang, WANG Xiang-Peng, JIANG Xiu-Yan
Chinese Journal of Chemical Education. 2022, 43 (22): 55-61. ;  doi: 10.13884/j.1003-3807hxjy.2021070216
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In order to cultivate creative talents, a verification-exploration two segment teaching mode is developed on the experimental teaching of physical chemistry. The extension is carried out on the basis of retaining the original confirmatory experiment. In this paper, the influence of the concentration of catalyst and substrate on the iodide modified BZ oscillating system was investigated,The standard curve of Rhodamine B was drawn to determine the content of Rhodamine B in food. Compared with traditional verification experiments, the two-stage teaching mode is easier to be combined in class and after class. The reformed mode can not only train the basic experimental skills of physical chemistry, but also facilitate the cultivation of students’ independent innovative ability and scientific research ability.
Teacher Education

Case Study on the Relationship between Preservice Chemistry Teachers’ Content
Knowledge and PCK: Theme of Amount of Substance

LAI Ping, LIU Rui, ZHANG Jing
Chinese Journal of Chemical Education. 2022, 43 (22): 62-71. ;  doi: 10.13884/j.1003-3807hxjy.2021090205
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Based on the theme of amount of substance,this study explores the relationship between content knowledge (CK) and pedagogical content knowledge (PCK) of preservice chemistry teachers. Data sources include CK interviews,CoRe interviews,teaching videos,teaching design,reflective journal and other diversified qualitative data. Analysis induction method and deductive method based on Gess-Newsome (2015) PCK model were used to analyzed data. The findings are as follows:teacher lens affects preservice chemistry teachers’ understanding and development of content knowledge;content knowledge influences the choice of teaching strategy and content representation;preservice chemistry teachers with different content knowledge do not have adequate understanding of students. This study is of great significance to the professional development of preservice chemistry teachers.

Research on the Cultivation of Normal Students’ Understanding of
Chemistry: Problems and Countermeasures

WANG Wei, WU Hai-Sheng, MA Yuan-Yuan, WANG Hou-Xiong
Chinese Journal of Chemical Education. 2022, 43 (22): 72-76. ;  doi: 10.13884/j.1003-3807hxjy.2021080230
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The training of outstanding teachers in the new era puts forward higher requirements for the cultivation of normal students. Taking chemistry as an example, this paper investigates and analyzes the subject understanding ability of novice teachers. The results show that novice chemistry teachers have some problems, such as misunderstanding of knowledge, insufficient thinking about the nature of the discipline, and lack of microscopic probing. In this regard, four suggestions are put forward for the cultivation of chemistry normal students, that is, colleges and universities should strengthen the connection between high school and university professional courses for chemistry normal students, disciplinary pedagogical teachers should promote chemistry normal students to actively understand the chemistry subject, build typical cases of chemistry subject understanding, and relevant courses should be provide scientifically to ensure the learning space for normal students’ understanding of chemistry subject.
Vocational Education

Virtual-Actual Combination Organic Chemistry Experiment Teaching
Based on Mobile Terminal in Higher Vocational College

ZHANG Qing-Fang
Chinese Journal of Chemical Education. 2022, 43 (22): 77-81. ;  doi: 10.13884/j.1003-3807hxjy.2022030164
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A virtual simulation software based on mobile terminal is applied to organic chemistry experiment teaching in higher vocational colleges. Taking the experimental teaching of “preparation of isoamyl acetate” as an example,students can understand the details of experimental operation and be familiar with experimental steps by introducing virtual simulation experimental operation. The results show that the virtual-actual combination organic chemistry experiment can improve the students’ interests in autonomous learning, enhance the experimental confidence and improve the experimental operation ability.

Analysis Chemistry Loose-Leaf Teaching Material Based on “1+X” Certificate for
the Food Biotechnology Specialty in Secondary Vocational School:

TANG Xue-Juan, WANG Hai-Bin, LI Jun-Wen, LI Ping
Chinese Journal of Chemical Education. 2022, 43 (22): 82-87. ;  doi: 10.13884/j.1003-3807hxjy.2021070204
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The “1+X” certificate system and loose-leaf teaching material are the focus and direction of the construction of a modern vocational education system with Chinese characteristics. The key to the development and design of the loose-leaf teaching material is the task orientation of enterprises and the standard of vocational skill level. Taking the use of spectrophotometer in the typical work task of the food biotechnology specialty in secondary vocational school as an example, the development and design process and basic ideas of the loose-leaf teaching materials based on the “1+X” certificate are provided, and the teaching implementation is carried out. The teaching highlights of the loose-leaf teaching materials based on the “1+X” certificate are summarized.
Chemical Educationfor Non-Chemistry Majors

Environmental Chemistry Curriculum Construction Based
on New Engineering Connotation

YAN Fang-You, JIA Qing-Zhu
Chinese Journal of Chemical Education. 2022, 43 (22): 88-93. ;  doi: 10.13884/j.1003-3807hxjy.2021090137
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For improving the practice and innovative ability of environmental talents, the “quality+ability+knowledge” integration objective for environmental chemistry was reconstructed, which was accord with the new engineering connotation. Environment computational chemistry content, “chemicals structure-activity relationship”, was added as the new engineering elements via the research feedback teaching approach. The “3 3 3” teaching mode was proposed based on the online-offline hybrid method. The students’ various ability training and value modelling were strengthened owing to the teaching design and diversified process evaluations. Practice suggested that students’ sense of learning gain positively related to their class participation. Based on teachers’ scientific research feedback and frontier expansion, students’ interests and challenges in application of which would be more stimulated, and their practical ability and innovative ability could be further improved. Accordingly, new engineering connotative construction of environmental chemistry through all-around could be implemented, which might provide reference for the new engineering upgrade of the environment engineering.

Explanation of Medical Knowledge from Chemistry in Basic Chemistry Teaching:
Formation and Protection of Dental Caries

LI Jia-Jia, YANG Hui-Juan, WANG Qi-Zhao, ZHANG Shuan, SHI Ya-Jun, TANG Yu-Ping, MENG Qing-Hua, ZHANG Guang-Hui, ZHANG Sai
Chinese Journal of Chemical Education. 2022, 43 (22): 94-99. ;  doi: 10.13884/j.1003-3807hxjy.2021100211
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It is difficult for medical students to apply chemical knowledge to solve medical problems. In this paper, the medical case “formation and protection of dental caries” would be taken as a starting point to analyze medical principles from the perspective of chemistry. Thereby, the correlation between basic chemistry teaching and medical content has been explored. Employing the integration of chemistry and medical teaching mode could arouse students’ interests in learning chemistry and cultivate students’ ability of thinking, analyzing and solving problems. And it will provide the foundation for cultivating compound medical talents in the new era.

Teaching Practice of Introducing Self-Organizing Precipitation Pattern
into University Chemistry

ZHENG Ju-Hua, PAN Chang-Wei, LV Xiao-Li, MA Juan, GAO Qing-Yu
Chinese Journal of Chemical Education. 2022, 43 (22): 100-106. ;  doi: 10.13884/j.1003-3807hxjy.2022040279
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University chemistry is a compulsory basic course for non-chemistry and chemical engineering majors in science and engineering in colleges and universities. By introducing the self-organizing precipitation pattern into the course teaching,students can deepen their understanding of precipitation dissolution equilibrium;By analogy with similar precipitated structures in nature,it not only stimulates students’ interests,but also enables students to understand the connection and intersection between different disciplines;Through heuristic teaching,students’ scientific accomplishment and innovative ability can be improved.
Information Technology and Chemistry

Application of Quantum Chemistry Calculations in the Teaching Process of
Nuclear Magnetic Resonance of Organic Compounds

LIN Bin, SUN Shi-Tao, HAO Jin-Le
Chinese Journal of Chemical Education. 2022, 43 (22): 107-111. ;  doi: 10.13884/j.1003-3807hxjy.2021120229
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The calculations of nuclear magnetic resonance data by quantum chemistry methods and comparison with experimental data have been widely used to determine the configurations of complex natural products. Taking the teaching of nuclear magnetic resonance as an example, the specific application of quantum chemistry calculations in the teaching of the spectra analysis of organic compounds is introduced. Calculating the chemical shift values of proton nuclear magnetic resonance spectroscopy and carbon nuclear magnetic resonance spectroscopy can assist in the analysis of molecular structures and help students have a more intuitive understanding of the distribution of electrons and the chemical environment of atomic nuclei. It is helpful to students to better understand the nature of nuclear magnetic resonance and effectively improve students’ interests and enthusiasm for learning of nuclear magnetic resonance. Meanwhile, it is also helpful to students to better understand the application of quantum chemical calculations in nuclear magnetic resonance, understand the cutting-edge methods of chemical research, broaden students’ horizons, and cultivate students’ ability to solve practical problems.
Investigation Repor

Study on the Real Effect of Laboratory Safety Education Among First-Year Undergraduates

WANG Juan, JIN Xing-Long, WANG Xiao-Yan
Chinese Journal of Chemical Education. 2022, 43 (22): 112-115. ;  doi: 10.13884/j.1003-3807hxjy.2021050112
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In order to investigate the real effect of the online and offline safety education, the safety test is conducted among the first-year undergraduates in School of Chemistry and Chemical Engineering, School of Environmental Science and Safety Engineering, School of Mechanical Engineering and School of Material Science and Engineering, Tianjin University of Technology. The results demonstrated the effectiveness of the online and offline safety education mode. The deficiency lies in the safety knowledge about emergency disposal. Therefore, in the following safety education, the content and mode of online and offline safety education need further optimized. And safety education for all staff and the whole process should be comprehensively promoted.

Influence of Chemical Self-Efficacy on Self-Regulated Learning Strategy
and Academic Achievement of College Students

LU Dian, YE Jian-Hong, ZENG Zhen-Fang
Chinese Journal of Chemical Education. 2022, 43 (22): 116-123. ;  doi: 10.13884/j.1003-3807hxjy.2022020162
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College students’ academic achievement is one of the important factors to measure the quality of university education. According to the theories of social cognition, constructivism learning and humanism learning, the chemical self-efficacy perception of college students can promote the application of self-regulation learning strategies, and has a positive effect on the improvement of academic achievement and comprehensive quality. Objective: To explore the effect of chemical self-efficacy on academic achievement, and to investigate the mediating effect of self-regulated learning strategies. Methods: 536 college students majoring in chemistry and chemical engineering were surveyed by cluster sampling using chemical self-efficacy scale, chemical self-regulation learning strategy scale and academic achievement questionnaire. Results: There was a significant positive correlation between chemical self-efficacy and their academic achievement. There was a significant positive correlation between self-efficacy and self-regulation learning strategies. Self-regulated learning strategies are positively correlated with academic achievement. Self-regulated learning strategies play a part mediating effect on the relationship between chemical self-efficacy and academic achievement.
Discussionand Thinking of Questions

Mechanism and Stereoselectivity in the Electrophilic Addition of
Alkenes with Hydrogen Halides

XU Jia-Xi, MA Yuan
Chinese Journal of Chemical Education. 2022, 43 (22): 124-128. ;  doi: 10.13884/j.1003-3807hxjy.2021080035
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Electrophilic additions of alkenes and hydrogen halides are not only one class of important reactions of alkenes, but also an important synthetic method of haloakanes. In current popular organic chemistry textbooks, only stepwise mechanism involving carbocation intermediates and regioselectivity are introduced on the electrophilic additions of alkenes and hydrogen halides, not concerning their stereoselectivity. This article introduces the reported mechanisms and stereoselectivity on the electrophilic additions of alkenes and hydrogen halides, hoping to update and to improve the understanding on this electrophilic additions in teaching organic chemistry.
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