Journal of Chemical Education最新文献_第3页

Introducing Raman Spectroscopy through Analysis of Microplastic Pollutants: A Polymer Characterization Practical for Chemical Engineering Undergraduates 引入拉曼光谱分析微塑料污染物——一种面向化工本科生的聚合物表征实用方法

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-22 DOI: 10.1021/acs.jchemed.5c00725

Qing He, , , Shaolan Zou, , , Fengmin Jin, , , Wen Zhang, , , Zhufeng Geng, , , Huilin Hu, , , Hui Fang, , , Shixin Liu, , , Na Liu, , , Nana Tian*, , , Yinping Li*, , and , Xiaobin Fan*,

{"title":"Introducing Raman Spectroscopy through Analysis of Microplastic Pollutants: A Polymer Characterization Practical for Chemical Engineering Undergraduates","authors":"Qing He, , , Shaolan Zou, , , Fengmin Jin, , , Wen Zhang, , , Zhufeng Geng, , , Huilin Hu, , , Hui Fang, , , Shixin Liu, , , Na Liu, , , Nana Tian*, , , Yinping Li*, , and , Xiaobin Fan*, ","doi":"10.1021/acs.jchemed.5c00725","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00725","url":null,"abstract":"Raman spectroscopy, a powerful vibrational spectroscopic technique widely used in chemistry, materials science, and environmental analysis, provides critical molecular insights through spectral fingerprints. However, undergraduate students often lack proficiency in optimizing experimental parameters, interpreting vibrational modes, and applying chemometric tools to real-world samples. To address this gap, we designed a problem-based learning (PBL) laboratory course for chemical engineering students in a Polymeric Materials curriculum. Participants analyzed microplastics─an emerging environmental contaminant─using Raman spectroscopy to identify polymer types, assign functional groups, and correlate spectral features with material properties. Students employed principal component analysis (PCA) to classify polymer spectra and visualize results through score plots, integrating hands-on instrumentation with computational data analysis. This inquiry-driven experiment achieved educational outcomes including enhanced technical skills in Raman parameter optimization and spectral interpretation, proficiency in chemometrics for material classification, and heightened critical thinking through authentic environmental problem-solving. This practical framework bridges fundamental spectroscopy, materials science, and data analytics, preparing undergraduates for interdisciplinary research.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4489–4497"},"PeriodicalIF":2.9,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perfectionism and Learning Motivation among Freshmen in Chemistry-Related Majors: Mediating Role of Self-Efficacy and Psychological Resilience 化学专业大一新生的完美主义与学习动机：自我效能感和心理弹性的中介作用

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-21 DOI: 10.1021/acs.jchemed.5c00339

Jiayi Jiao, , , Xiaoyan Wang, , , Xinglong Jin*, , , Song Xue, , and , Xinshi Wu*,

引用次数: 0

Rethinking the Autoxidation of Benzoin 对安息香自氧化的再思考

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-20 DOI: 10.1021/acs.jchemed.4c01576

Yicheng Mei, , , Pu Wang, , and , Baowei Yang*,

引用次数: 0

Teaching Soil Chemistry through Problematized Experimental Activity: Determination of Acidity, Exchangeable Aluminum, and Available Phosphorus in Soils 通过有问题的实验活动教授土壤化学：测定土壤中的酸度、交换性铝和有效磷

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-20 DOI: 10.1021/acs.jchemed.5c00027

Amanda M. A. Feu*, , , Gyovana L. Welsing, , , André L. S. da Silva, , , Priscilla P. Luz, , and , Paulo R. G. de Moura,

{"title":"Teaching Soil Chemistry through Problematized Experimental Activity: Determination of Acidity, Exchangeable Aluminum, and Available Phosphorus in Soils","authors":"Amanda M. A. Feu*, , , Gyovana L. Welsing, , , André L. S. da Silva, , , Priscilla P. Luz, , and , Paulo R. G. de Moura, ","doi":"10.1021/acs.jchemed.5c00027","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00027","url":null,"abstract":"This study aims to explore the contributions of problematized experimental activity (PEA) focused on biochar as a sustainable soil conditioner for red-yellow Oxisol in enhancing chemical knowledge in higher education. For this, the theoretical-methodological teaching-learning strategy called PEA was applied, entitled “Soil chemistry: biochar as a sustainable conditioner”. The research was conducted with undergraduate Chemistry students during Experimental Inorganic Chemistry I classes at Federal University of Espírito Santo. The students carried out experimental procedures to determine soil’s active acidity, potential acidity, exchangeable aluminum, and available phosphorus. Therefore, the potentiometric method, the titrimetric method, and UV–vis spectroscopy were performed. Such techniques involve several objects of knowledge, from the planning of the experimental route and its execution to the interpretation of the results obtained. At the end of the PEA methodological path, the analytical process followed the model of the Grounded Theory in Data. According to the substantive theory developed, the integration of biochar as a sustainable soil conditioner within the PEA framework contributed meaningfully to the development of chemical knowledge, as interpreted through the students’ written responses and final synthesis products. The data further revealed the topic’s versatility and applicability across varying levels of complexity, allowing the PEA to be adapted to diverse approaches within the same context. These results affirm the PEA’s potential as a versatile and impactful pedagogical strategy for fostering both chemical knowledge and practical scientific skills.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4338–4348"},"PeriodicalIF":2.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.jchemed.5c00027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Local LLM Tools to Optimize Chinese High School Chemistry Education: Practice, Challenges, and Future Directions 运用本地法学硕士工具优化中国高中化学教育：实践、挑战和未来方向

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-19 DOI: 10.1021/acs.jchemed.5c00220

Wang Shouqian, , , Chen Fangyuan, , , Ge Chen, , , Shi Haofu, , , You Yanxiang, , , Guo Junru, , , Zheng Shunlin, , and , Zhu Xingyu*,

{"title":"Using Local LLM Tools to Optimize Chinese High School Chemistry Education: Practice, Challenges, and Future Directions","authors":"Wang Shouqian, , , Chen Fangyuan, , , Ge Chen, , , Shi Haofu, , , You Yanxiang, , , Guo Junru, , , Zheng Shunlin, , and , Zhu Xingyu*, ","doi":"10.1021/acs.jchemed.5c00220","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00220","url":null,"abstract":"This study focuses on the structural problems of teacher shortage, unequal resource allocation, and traditional teaching mode in high school chemistry education in China and explores the application potential of local large language model (LLM) tools in personalized teaching and alleviating teachers’ workload. Taking multiple schools at different educational development levels in Henan Province as samples, through stratified random sampling, a questionnaire survey, and 44 h of intervention course practice, the auxiliary effect of LLM tools in chemistry teaching was systematically evaluated. The results show that in areas with relatively weak educational resources, LLM tools can play an important role in supplementing the imbalance of the teacher–student ratio, improving the effect of after-school personalized tutoring and expanding the depth of knowledge while significantly shortening the time for teachers to prepare lessons and design lesson plans; however, in the fields of chemical equation correction, complex calculation, and professional symbol recognition, their accuracy and convenience of operation still need to be further improved. Based on the theory of digital transformation of education, this paper also discusses the necessity of technology, teachers, and policies to jointly build an intelligent education ecosystem and provides theoretical and practical references for the future construction of subject-specific LLM tools, optimization of teacher training mechanisms, and improvement of data privacy protection strategies.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4368–4375"},"PeriodicalIF":2.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-Step Experiment for Undergraduate Organic Chemistry Laboratory Using Green Techniques: Synthesis of Acetylferrocene and Its Reduction to (±)-1-Ferrocenylethanol 绿色技术在本科有机化学实验室中的两步实验：乙酰二茂铁的合成及其还原为（±）-1-二茂铁乙醇

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-19 DOI: 10.1021/acs.jchemed.4c01568

Uttam Pokharel*, , , Hiram Flores, , and , Lily Siddon,

{"title":"Two-Step Experiment for Undergraduate Organic Chemistry Laboratory Using Green Techniques: Synthesis of Acetylferrocene and Its Reduction to (±)-1-Ferrocenylethanol","authors":"Uttam Pokharel*, , , Hiram Flores, , and , Lily Siddon, ","doi":"10.1021/acs.jchemed.4c01568","DOIUrl":"https://doi.org/10.1021/acs.jchemed.4c01568","url":null,"abstract":"Electrophilic aromatic substitution reactions and ketone reduction are fundamental reactions in sophomore-level organic chemistry courses. One commonly taught example of electrophilic aromatic substitution in undergraduate laboratories is the Friedel–Crafts acylation of ferrocene, often carried out using acetic anhydride in the presence of concentrated phosphoric acid. Similarly, the reduction of the ketone to alcohol is performed using sodium borohydride in the presence of protic solvents. These methods typically involve hazardous chemicals and tedious workup procedures. To address these limitations and incorporate green chemistry principles, we developed a two-day experiment. On the first day, acetylferrocene is synthesized via the acetylation of ferrocene using acetyl chloride and zinc oxide in dichloromethane. On the second day, the acetylferrocene is reduced to (±)-1-ferrocenylethanol under solventless reaction conditions by grinding it with NaBH4 and silica gel, followed by intermittent heating using a household microwave. Both reaction yields are nearly quantitative after their aqueous workup. The products are characterized by melting point, IR spectroscopy, and NMR spectroscopy. Students complete prelab assignments on the structure of ferrocene and the mechanisms of electrophilic aromatic substitution and reduction and postlab reports focused on synthesis, purification, and product characterization. This experiment enhances student learning while minimizing chemical usage, improving safety, maximizing yields, and introducing the concept of nontraditional solid-phase reactions.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4530–4537"},"PeriodicalIF":2.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydragen: An Open-Accessed, Personalized Learning Platform for Mass Spectrometry 氢：一个开放访问的，个性化的质谱学习平台

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-17 DOI: 10.1021/acs.jchemed.5c00722

Charles Jordi Windle, , , Yongbeom Kim, , , Jia Yi Han, , , Jonathan Sing Huat Ong, , and , Fun Man Fung*,

{"title":"Hydragen: An Open-Accessed, Personalized Learning Platform for Mass Spectrometry","authors":"Charles Jordi Windle, , , Yongbeom Kim, , , Jia Yi Han, , , Jonathan Sing Huat Ong, , and , Fun Man Fung*, ","doi":"10.1021/acs.jchemed.5c00722","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00722","url":null,"abstract":"Mass spectrometry (MS) is essential in analytical chemistry education, but effective mastery requires extensive personalized practice, often limited by availability of resources. To address this constraint, the authors developed Hydragen, a free, open-access learning platform that generates personalized multiple-choice questions for MS practice. Utilizing an adaptive algorithm based on the Elo rating system, Hydragen dynamically matches question difficulty to students’ skill levels, maintaining an optimal challenge to foster continuous learning. The platform provides interactive, real-time hints and tailored feedback, reinforcing student proficiency in interpreting MS spectra and identifying characteristic fragmentation patterns. Implemented at both undergraduate and high-school levels, Hydragen improved students’ perceived preparedness and engagement with MS practice, addressing key pedagogical gaps identified in traditional resources. This scalable, innovative solution exemplifies effective integration of adaptive learning technology, demonstrating strong potential to transform personalized chemistry education.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4479–4488"},"PeriodicalIF":2.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.jchemed.5c00722","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simple Web-Based Interactive Visualizations to Illustrate and Explore Concepts in NMR Spectroscopy 简单的基于web的交互式可视化来说明和探索核磁共振光谱中的概念

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-17 DOI: 10.1021/acs.jchemed.5c00985

Euan D. Doidge*,

{"title":"Simple Web-Based Interactive Visualizations to Illustrate and Explore Concepts in NMR Spectroscopy","authors":"Euan D. Doidge*, ","doi":"10.1021/acs.jchemed.5c00985","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00985","url":null,"abstract":"The interpretation of NMR spectra is a fundamental skill for chemists. Multiple strategies and resources support the teaching and learning of NMR spectroscopy, such as worked examples and question banks. A challenge in NMR spectral interpretation is cognitive overload, especially for beginners who must assimilate new information alongside existing knowledge of molecular structure. A useful strategy is to provide visualizations of spectra. However, existing software solutions (often requiring purchase or installation) can be convoluted, with excess features for a beginner and a focus on organic molecules and 1H/13C NMR spectra. This work provides freely accessible, web-based interactive visualizations to support the teaching and learning of NMR spectroscopy (https://chem-ed.github.io/NMR/). These are designed to be simple, focus on defined concepts with minimal distractions, and increase interactivity to enhance engagement. These cover fundamental topics such as chemical shift, multiplicity, and J coupling constants, of use to learners relatively new to NMR spectral interpretation, as well as more complex areas like decoupling and successive coupling. A notable feature is the ability to consider coupling to quadrupolar nuclei (I > 1/2) and isotopes with <100% natural abundance forming satellite signals─concepts often overlooked but essential to inorganic chemistry and multinuclear NMR spectroscopy, providing resources for more advanced learners.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4519–4529"},"PeriodicalIF":2.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acs.jchemed.5c00985","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Attitudes toward Chemistry in Chilean University Students: Investigating Academic Performance, Sex Differences, and Emotional Satisfaction Through the ASCI-UE 智利大学生对化学的态度：通过ascii - ue调查学业成绩、性别差异和情感满意度

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-16 DOI: 10.1021/acs.jchemed.5c00598

Lilian H. Montes*, , , Guizella A. Rocabado, , , Roberto A. Ferreira, , and , Cristina Rodríguez,

{"title":"Attitudes toward Chemistry in Chilean University Students: Investigating Academic Performance, Sex Differences, and Emotional Satisfaction Through the ASCI-UE","authors":"Lilian H. Montes*, , , Guizella A. Rocabado, , , Roberto A. Ferreira, , and , Cristina Rodríguez, ","doi":"10.1021/acs.jchemed.5c00598","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00598","url":null,"abstract":"Attitudes are fundamental to understanding student engagement and achievement in higher education science, yet the factors that shape these attitudes can vary across contexts. This study applied the Attitude toward the Subject of Chemistry Inventory–Utility and Emotional Satisfaction (ASCI-UE) to investigate the relationship between Chilean university students’ chemistry attitudes, academic performance, and sex. A total of 286 s-year health sciences students from three universities in central Chile participated. Confirmatory factor analysis supported a two-factor structure encompassing perceived utility and emotional satisfaction. Notably, emotional satisfaction emerged as a significant predictor of academic performance, whereas perceived utility did not differ among high- and low-performing students. In addition, no significant sex differences were observed, suggesting that male and female students share similar perceptions of chemistry in the Chilean context. These findings contrast with some international studies that report pronounced gender disparities in STEM attitudes while aligning with others that highlight variability across cultural and educational contexts, underscoring the potential influence of local policies and factors in Chile. This study provides empirical evidence that cultivating positive emotional experiences could enhance academic outcomes in chemistry courses.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4233–4242"},"PeriodicalIF":2.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sense of Belonging and Underlying Concerns in Large Enrollment General Chemistry Courses 大招生普通化学课程的归属感与潜在问题

IF 2.9 3区教育学

Journal of Chemical Education Pub Date : 2025-09-13 DOI: 10.1021/acs.jchemed.5c00408

Zamira Torres, , , Camila Senespleda, , , Abayneh Lemma, , , Keila Muller, , and , Tamra Legron-Rodriguez*,

{"title":"Sense of Belonging and Underlying Concerns in Large Enrollment General Chemistry Courses","authors":"Zamira Torres, , , Camila Senespleda, , , Abayneh Lemma, , , Keila Muller, , and , Tamra Legron-Rodriguez*, ","doi":"10.1021/acs.jchemed.5c00408","DOIUrl":"https://doi.org/10.1021/acs.jchemed.5c00408","url":null,"abstract":"This study investigates sense of belonging in three general chemistry courses at a large Hispanic-Serving research university. Data were collected from 440 students across two semesters through surveys that included Likert-type and open-ended questions, of which 170 students responded to the open-ended question. Frequency counts were used to analyze data from the closed-ended questions, while thematic analysis was employed for the data from the open-ended question. Most students agreed with statements reflecting comfort with classmates, comfort with instructors, and belonging when performance is set aside. However, a relatively lower proportion of agreement was observed regarding their sense of academic fit. The number of students with high belonging uncertainty was also higher than the number of students with low belonging uncertainty. In addition, students’ sense of belonging was found to be associated with Preparation and Performance, Academics, Learning Environment, and Interests and Goals. Notably, Preparation and Performance and Learning Environment appeared to be more concerning for students with high belonging uncertainty across all courses. The results are discussed in the context of existing literature, leading to essential implications.","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 10","pages":"4214–4222"},"PeriodicalIF":2.9,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145277585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0