Research of Application of Sensors Based on Self-Assembly of Nanoparticles in Biochemical Analysis
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
Reform and Innovation of Applied Talents Training Mode in Local Colleges
Modeling Calculation and Discussion on Donnan Equilibrium of Ion-Macromolecule Containing Semi-Permeable Membrane Dialysis Systems
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
Application of Sandwich Teaching Method in Organic Chemistry Course for Engineering
Synthesis and Photoluminescence Study of Copper(I) Complexes
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
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
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
Teaching Mode of Teaching-Learning-Practicing:Taking Chemical Analysis of Cement as Example
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
Experiment Teaching of Chemical Engineering and Technology Specialty
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”
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
Teaching Design of Literature Management Software Based on Flipped Classroom and Cooperative Learning
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