新工科背景下化工原理理论和实践教学改革研究*

“化工原理”作为化学工程与工艺专业核心课程,担负着由理论到工程、由基础到专业的桥梁作用,对培养具有工程观点、实践技能以及创新能力的新工科人才具有重要作用。如何使专业理论知识和实践能力有机接轨并相辅相成,是教学关键。通过对学生的问卷调查及教学实践提出一些切实可行的教学改革措施,以期达到对学生全方位的培养。     

Solvent Synthesis,Growth Mechanism and Photocatalytic Properties of AgInS_2 Nanoplate and Nanoparticle

Orthorhombic AgInS_2 nanoplate and nanoparticle were synthesized using pyridine and 1-dodecanethiol as the solvent.The obtained products were characterized by X-ray diffraction(XRD),field-emission scanning electron microscope(FESEM),field-emission transmission electron microscope(FETEM),and the possible growth mechanism of AgInS_2 was also proposed by the exploration of reaction temperature and time.Meanwhile,the bandgap of AgInS_2 was calculated by the UV-Vis diffuse reflectance spectrum,and the photocatalytic activity was also investigated.Those experimental results indicate that the reaction temperature,reaction time and solvent have an influence on phase and morphology of AgInS_2,and both AgInS_2 nanoplate and nanoparticle have some ability on photocatalytic degradation of organic dyes under UV-Vis light irradiation.