新版、新形态、新亮点——《有机化学实验(第六版)》简介

新形态出版的大连理工大学《有机化学实验(第六版)》融合了纸质版教材和网上数字资源,整合了第五版书附教学光盘、网站资源及新建数字资源,优化为新版数字资源作为纸质版教材的支撑和拓展。第六版教材参考了国内外实验教学论文,编著了反应机理证明、可视化制备、黄鸣龙还原及烯烃交互置换专题下14个基本性实验;编著了天然肉桂醛提取及羟醛缩合、脯氨酸催化不对称合成和LED光催化发光体制备等3个综合性实验;编著了费舍尔酯化法合成工业香料羧酸酯的设计性实验与优化微波辅助威廉森法制备4-硝基苯乙醚反应条件的研究性实验。第六版教材搭建了个性化学习平台,有助于提升学生实验能力,培养学生严谨创新的学风。

基于虚拟教研室平台的有机化学课程知识图谱建设探索

依托有机化学课程虚拟教研室优质资源,建设钉钉平台的有机化学课程知识图谱。知识图谱包含由知识单元、知识点等“节点”的层级结构、通过“节点”间的“关系”形成的网状结构,将课程内容前后紧密的联系起来。通过融入虚拟教研室共建共享的教学资源,知识图谱可为有机化学课程的教学活动和人才培养提供全方位的支持。

Wavelength-sensitive photocatalytic H2 evolution from H2S splitting over g-C3N4 with S,N-codoped carbon dots as the photosensitizer

Photocatalytic splitting of hydrogen sulfide(H2S) for hydrogen evolution is a promising method to solve the energy and environmental issues.In this work,S,N-codoped carbon dots(S,N-CDs)/graphitic carbon nitride(g-C3N4) nanosheet is synthesized by hydrothermal method as an efficient photocatalyst for the decomposition of H2S.In addition to the characterization of the morphology and structure,chemical state,optical and electrochemical performances of S,N-CDs/g-C3N4,hydrogen evolution tests show that the activity of g-C3N4 is improved by introducing S,N-CDs,and the enhancement depends strongly on the wavelength of incident light.The photocatalytic hydrogen production rate of S,N-CDs/g-C3N4 composite reaches 832 μmol g-1h-1, which is 38 times to that of g-C3N4 under irradiation at 460 nm.Density functional theory calculations and electron paramagnetic resonance as well as photoluminescence technologies have altogether authenticated that the unique wavelength-dependent photosensitization of S,N-CDs on g-C3N4;meanwhile,a good match between the energy level of S,N-CDs and g-C3N4 is pivotal for the effective photocatalytic activity.Our work has unveiled the detailed mechanism of the photocatalytic activity enhancement in S,N-CDs/g-C3N4 composite and showed its potential in photocatalytic splitting of H2S for hydrogen evolution.

Cross-cultural Education Model for Foreign Students in China Inte­grating Ideological and Political Education

With the deepening the“One Belt and One Road”construction,the exchanges between China and other countries in the world are increasingly frequent,the number of foreign students in China is rising,and there are cross-cultural adaptability problems of foreign students in China.The education of foreign students in China undertakes the mission of serving the national external development strategy.In order to better serve the“One Belt and One Road”construction,relying on tradition industry advantage of the School of Civil Engineering,Central South University in civil engineering and railway engineering,a set of cross-cultural education model for foreign students in China integrating ideological and political education is explored and practiced in the foreign student education management of the curriculum system,daily management,cross-cultural counseling,social practice and cultural exchanges,which can be summarized as“one goal,two combinations,three approaches,four abilities and five management measures”.This management model can effectively enhance the cross-cultural adaptability of foreign students,cultivate the emotion of knowing and being friendly to China,improve the education quality of foreign students in China,enhance the international education influence of the Central South University,and promote the spread of Chinese culture.

Molecular modulating of cobalt phthalocyanines on aminofunctionalized carbon nanotubes for enhanced electrocatalytic CO_(2)conversion

Metal porphyrins and metal phthalocyanines(Pc)constitute a promising class of metal molecular catalysts(MMCs)for efficient CO_(2)-to-CO electrocatalytic conversion due to their well-defined molecular structures.How to adjust the local coordination and electronic environment of the metal center and enhance the molecular-level dispersion of the active components remains as great challenges for further improving the performance.Herein,a cobalt(II)Pc(CoPc)-COOH/carbon nanotube(CNT)-NH_(2)hybrid catalyst was rationally designed by clicking the CoPc-COOH molecules onto the surface of CNT-NH_(2)through amidation reaction.This novel hybrid catalyst exhibited the enhanced current density of 22.4 mA/cm2 and CO selectivity of 91%at−0.88 V vs.reversible hydrogen electrode(RHE)in the CO_(2)electroreduction,as compared with CoPc-COOH/CNT and CoPc/CNT samples.The superior activity was ascribed to the charge transfer induced by introduction of-COOH and-NH_(2)functional groups to CoPc and CNT,respectively,facilitating the active centers of CoI being generated at lower potentials,and leading to the highest turnover frequency(TOF)being obtained over the CoPc-COOH/CNT-NH_(2)hybrid catalyst.The inherent directivity and saturability of covalent bonds formed via the amidation reaction ensure not only a higher density of Co active centers,but also an improved stability for CO_(2)reduction reaction(CO_(2)RR).The present study represents an effective strategy for improving MMCs performance by molecular modulating of metal phthalocyanines on functionalized carbon substrates directed by click confinement chemistry.