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Chinese Journal of Chemical Education  
  Chinese Journal of Chemical Education--2017, 38 (16)   Published: 18 August 2017
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Chinese Journal of Chemical Education. 2017, 38 (16): 0-0.
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Research of Application of Sensors Based on Self-Assembly of Nanoparticles in Biochemical Analysis

MA Lin, ZHANG Lei, WU Guo-Hua, LI Long
Chinese Journal of Chemical Education. 2017, 38 (16): 1-9. ;  doi: 10.13884/j.1003-3807hxjy.2017020034
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Nanoparticles can organize into materials with diverse spatial structures controllably via self-assembly technique, which endows them and their assemblies with great application in ultra-sensitive detection of many biochemical substances (such as proteins, polypeptides, DNA and so on) and metal ions. In this paper, the application of sensors based on the self-assembly of semiconductor quantum dots, noble-metal nanoparticles and carbon-based nanomaterials in biochemical analysis was described.

Textbooks Innovation and Cultivation of Talents in Universities with Physical Chemistry's Textbook Innovation for Non-Chemistry Major

ZHANG Guo-Yan, JIN Wei-Qun, XU Hai, CHEN Xiao-Xin
Chinese Journal of Chemical Education. 2017, 38 (16): 10-13. ;  doi: 10.13884/j.1003-3807hxjy.2016120032
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At present, certain textbooks have the following problems, such as examples given in some textbooks falling behind new technology and method, the weak association of the theory and specific profession, which make it disadvantage for cultivating the ability to solve practical problems. With physical chemistry's textbook for non-chemistry students as an example, the detail procedures of textbook innovation in universities were illustrated here in order that talents would be both knowledgeable and innovative after textbook innovation. The procedures included strengthening the connection of textbook and professional knowledge, bridging between the basic theory and practical application, tracing the newest scientific achievements and experimental technique, renewing original materials of textbooks, combining the professional characteristics and cognitive need of students to design relevant exercises with discussion, and taking full advantage of modern means of information education to design teaching material.

Reform and Innovation of Applied Talents Training Mode in Local Colleges

ZOU Xiao-Chuan, LI Jun, LIN Qiang, SHI Kai-Yun, TAN Jun, FAN Liang
Chinese Journal of Chemical Education. 2017, 38 (16): 14-18. ;  doi: 10.13884/j.1003-3807hxjy.2016110021
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It's a growing concern and attention that the talents training mode is explored and deepened in local colleges. Taking the applied chemistry major of Chongqing University of Education (chemical pharmaceutics and drug analysis and detection direction) as example, the training program, exploration of teaching, curriculum reform and condition guarantee were analyzed and discussed, in order to share the experiences and approaches in cultivating applied talents in local colleges. According to the functions of local applied colleges, the results showed that the talents training mode should pay more attention to the close contact with local enterprise, and strive to meet the requirements of the industry for the detection and analysis of chemical pharmaceutical talents.

Modeling Calculation and Discussion on Donnan Equilibrium of Ion-Macromolecule Containing Semi-Permeable Membrane Dialysis Systems

WANG A. Zhipeng
Chinese Journal of Chemical Education. 2017, 38 (16): 19-25. ;  doi: 10.13884/j.1003-3807hxjy.2017020113
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Ion-macromolecule containing membrane dialysis systems widely exist in natural components and artificial communities. Donnan equilibrium is an ionic distribution balance law specially raised for ion-macromolecule containing membrane dialysis systems based on the electric potential. Although in a flat and direct expression, the definitions and explanations in Chinese textbook, as well as the applications in scientific studies, are in general open to doubt. This paper starts with bringing issues to these problematic descriptions. We completely divide and establish three ideal cases based on the existence of macromolecules, as "ion dialysis in" model system, "ion dialysis out" model system, and "macromolecule on both sides" model system. Then, we carefully calculate and discuss the mathematical processing together with the physical chemistry significance of each model system. Several pieces of limitations of Donnan equilibrium will be provided at last, hoping to facilitate the future education and research.

Teaching Improvement of Direction and Limitation of Chemical Reactions in University Chemistry

BAI Xiao-Juan
Chinese Journal of Chemical Education. 2017, 38 (16): 26-28. ;  doi: 10.13884/j.1003-3807hxjy.2017020115
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In this paper, firstly the reason for students making mistake on a problem frequently was analyzed. It has been found that two basic concepts (the standard states for species and the standard changes for reactions) need to be emphatically explained. And then according to some textbooks and references,when introducing chemical reaction isotherm equation, it may be better to introduce reaction quotient (Q) as activity quotient, and introduce the meaning of activity and activity calculation formulas of species in different reaction systems.

Application of Sandwich Teaching Method in Organic Chemistry Course for Engineering

WU Hong-Mei, GUO Yu, CHEN Qiang-Qiang, QI Ping, ZHANG Zhi-Hua, GAO Jie
Chinese Journal of Chemical Education. 2017, 38 (16): 29-33. ;  doi: 10.13884/j.1003-3807hxjy.2017020055
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Based on requirements of cultivating applied talents, a novel teaching mode in organic chemistry course was constructed through the application of sandwich teaching method and the modular construction of the teaching contents. As a result, the systematic nature of knowledge dissemination and the students' application ability were enhanced. Under the guidance of sandwich teaching mode, the corresponding teaching methods and examination methods were reformed resulting in the enhancement of the proportion of practical links and the students' participation. Besides, student-centered and teacher-oriented teaching mode was highlighted. According to the investigation and analysis, the enthusiasm of students is high. The ability of analyzing and solving problems, effective teamwork skills are improved greatly. Therefore, the sandwich teaching mode in organic chemistry course is suitable for the cultivation of applied talents.

Synthesis and Photoluminescence Study of Copper(I) Complexes

QU Jiang-Lan, ZHANG Wei
Chinese Journal of Chemical Education. 2017, 38 (16): 34-37. ;  doi: 10.13884/j.1003-3807hxjy.2016120062
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In this paper, we designed a comprehensive inorganic experiment based on the synthesis and photoluminescence study of copper(I) complexes. This experiment involved both basic synthesis technique of coordination compounds and advanced photoluminescence study of functional materials. Copper(I) complexes with cubane, dimer and step polymer structures were prepared. Meanwhile, the relationship between the photoluminescence properties and coordination structures were discussed. This experiment was planned for 12 class hours, including the preparation of copper(I) complexes and the analysis of their fluorescence properties. This comprehensive experiment could be easily applied in practical teaching with basic apparatus. The remarkable experiment phenomenon and high yields could dramatically simulate the students' interests. By means of this experiment, students could not only get a better grasp of the basic knowledge of inorganic chemistry, but also learn about the advanced technology in light-emitting materials. In addition, the comprehensive experiments could be important for improving experimental ability of the students and cultivating their innovative and interdisciplinary talents.

Comprehensive Experiment Design for Measurement of Relative Reactivity Ratios of Free Radical Copolymerization by Nuclear Magnetic Resonance

GUO Li-Hua, LIU Yan-Lan, LIU Wen-Jing, MIN Yuan-Yuan
Chinese Journal of Chemical Education. 2017, 38 (16): 38-41. ;  doi: 10.13884/j.1003-3807hxjy.2016110085
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Nuclear magnetic resonance (NMR) method was developed for the determination of relative reactivity ratios of styrene and methyl methacrylate free radical copolymerization. In order to verify the products as copolymers instead of polymer blends of two kinds of homopolymers, the polymer molecular weight and molecular weight distribution and the glass transition temperature were also characterized by gel permeation chromatography (GPC) and differential scanning calorimeter (DSC). This experiment was rich and systematic in content and therefore could comprehensively improve students' experimental skills and the scientific research ability.

Improvement on Determination of Sodium Salicylate by Nonaqueous Acid-Base Titration

MENG Qing-Hua, WU Zhen, SUN Ji-Yuan, YANG Zheng, LI Guang-Chao
Chinese Journal of Chemical Education. 2017, 38 (16): 42-45. ;  doi: 10.13884/j.1003-3807hxjy.2016120059
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The determination of sodium salicylate content using non-aqueous titration is important in the experiment teaching of analytical chemistry, and the current determination method is based on the use of perchloric acid standard solution. Potentiometric titration analysis method was used to study the effects of indicator dosage and the end point color on the accuracy of experimental results. Combined with quantitative analysis, this newly designed comprehensive experiment deepened the students' understanding on the principles and theories of non-aqueous titration, and promoted the cultivation of the students' rigorous scientific attitudes and experimental abilities.

Research-Oriented Experiment Design for Liquid-Phase Synthesis and Application of α-Fe2O3

YU Wen-Xiao, MA Zheng, ZHAO Heng-Xin, LUO Ming, ZHOU Jin-Ming, WEI Yu
Chinese Journal of Chemical Education. 2017, 38 (16): 46-50. ;  doi: 10.13884/j.1003-3807hxjy.2016120093
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A research-oriented experiment was designed on the basis of previous study. The experiment took the synthesis,characterization and the catalytic performance of α-Fe2O3 as the main line. With the guide of the teacher, students reviewed literature,designed experiment program, and tested products using many experimental technologies. By analysis of the experimental data and characterization results,the factors affecting success of the procedure were identified,and the optimum experimental schemes were reached. Finally, Students wrote experiment reports in the form of science paper and communicated with others through thesis defense. This experimental mode is helpful to cultivate talents with high quality.

Teaching Mode of Teaching-Learning-Practicing:Taking Chemical Analysis of Cement as Example

LI Yan-Gang, MA Hui-Li, ZHAO Hai-Jin
Chinese Journal of Chemical Education. 2017, 38 (16): 51-53. ;  doi: 10.13884/j.1003-3807hxjy.2017010047
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In response to the universal issues that occurred in operation on the teaching mode of teaching-learning-practicing at present, the corresponding reforms were explored on the course of chemical analysis of cement in terms of teaching contents, teaching methods and test evaluation as well. Meanwhile, a new course teaching mode was established by the characteristics of task-driven, docking to the process of production and studying-training integration. The teaching reflection during the exploration was summarized.

Blended Teaching Mode of Organic Chemistry Course in Higher Vocational Colleges

SHEN Yang-Fan, ZHANG Xue-Yun, WU Guo-Yun, XIAO La-Mei, HE Xiu-Hui
Chinese Journal of Chemical Education. 2017, 38 (16): 54-59. ;  doi: 10.13884/j.1003-3807hxjy.2016090099
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In order to solve the current teaching problems of foundation courses in higher vocational college, the blended teaching mode of organic chemistry course was successfully constructed based on the excellent course and the characteristic of organic chemistry. Our study demonstrated that the teaching mode was effectively turned into the "learning oriented" from "teaching oriented" by using flipped classroom teaching combined with online learning and classroom teaching. Simultaneously, according to the characteristics of the students in higher vocational colleges, the quality of teaching could be guaranteed by adopting the problem-based learning task list and the group learning mode of leader responsibility system.

Experiment Teaching of Chemical Engineering and Technology Specialty

ZHANG Shu-Xia, WEN Ping, LI Chuan
Chinese Journal of Chemical Education. 2017, 38 (16): 60-63. ;  doi: 10.13884/j.1003-3807hxjy.2017030069
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According to the characteristics of the experiment in chemical engineering and technology of China University of Petroleum (East China), this paper analyzed the experimental content, teaching mode and teaching methods. We put forward the gradually ascending experimental teaching mode of "three labs", and the simulation system into the experiment course, and operation mechanism of open laboratory. Meanwhile, the shortcomings and suggestions were pointed out. The purpose was to improve the comprehensive experimental skills of undergraduates, to fully mobilize the enthusiasm of students to learn, and to enhance their innovative sense and innovative capability. Finally, we would strive to cultivate high-level chemical personnel.

Experiment of Environmental Chemistry “Determination of Degradation Constants Rate of Methylene Blue by CA@Fe”

WENG Xiu-Lan, MA Li, WANG Qing-Ping
Chinese Journal of Chemical Education. 2017, 38 (16): 64-67. ;  doi: 10.13884/j.1003-3807hxjy.2016120125
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The removal of contaminant from water using iron-based nanoparticles has been one of the hottest environment remediation research areas at present. Degradation of methylene blue using Fe coated on calcium alginate, which would be of great significance to introduce into teaching experiment of environmental chemistry. The standard curves of methylene blue have been drawn up in the experiment. The influence of the different materials for the degradation of methylene blue, and the influence of the different reaction temperature for the degradation and the degradation rate constant of methylene blue has been investigated.

Construction and Implementation of Postgraduate Course on Advanced Analytical Chemistry Oriented to National Demands and Scientific Frontiers

WANG Yong, ZHUANG Qian-Fen, NI Yong-Nian
Chinese Journal of Chemical Education. 2017, 38 (16): 68-72. ;  doi: 10.13884/j.1003-3807hxjy.2016120067
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Advanced Analytical Chemistry is a practical course whose characteristics is content-renewal and strong multidiscipline intersection. In the classroom teaching of our postgraduate majored in analytical chemistry, not only were the contents of the course complicated, old, abstract, and poorly systematic, but also its class hour was relatively few. Around these problems, we renewed teaching ideas promptly to reform course orientation, textbook construction, teaching method, teaching means, and assessment system in order to stimulate students' interests and enthusiasm, raise the awareness of scientific research innovation and the ability of problem solving, and improve overall teaching quality of the course.

Teaching Design of Literature Management Software Based on Flipped Classroom and Cooperative Learning

FAN Guang-Wei, WANG Yin-Ling, LI Yi-Mei
Chinese Journal of Chemical Education. 2017, 38 (16): 73-77. ;  doi: 10.13884/j.1003-3807hxjy.2017010061
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The teaching mode of flipped classroom and cooperative learning has promoting effect in cultivating students' active learning and creative ability. Based on the information retrieval course and modern college student analysis, combined with the status of chemical information retrieval course for university, taking NoteFirst literature management software application as an example, the introduction of flipped classroom and group cooperative learning mode, we designed the teaching model and teaching process, so as to cultivate the students' information management and utilization ability.

Elderly Phenomenon of Nobel Prize in Chemistry in 21st Century and Its Enlightenment to Education

HU Yu-Chen, SONG Ya-Jie
Chinese Journal of Chemical Education. 2017, 38 (16): 78-81. ;  doi: 10.13884/j.1003-3807hxjy.2017030112
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The Nobel Prize winners in the 21st century showed an elderly phenomenon, and the statistical analysis found that the winning age of the Nobel Prize winner was on the rise. The statistical analysis of the age of the main academic achievements of the Nobel Prize winners in the 20th century and the 21st century found that the age at which the outstanding scientist achieved the main academic achievement did not change. The authentication period of the achievements was extended,which was the direct cause of the elderly phenomenon. Enlightenment was given to the reform of basic education.

Chinese Journal of Chemical Education. 2017, 38 (16): 41-41.
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