依托省级科研平台构建应用型人才培养的新模式

文章阐述了国内外应用化学专业人才培养现状,介绍了应用型人才的特征,剖析了当前高校应用型人才培养模式存在的问题,依托省级科研平台"环境污染物降解与监测安徽省重点实验室",探索、构建了一套符合社会急需的"应用型人才"新理念的、能够促进学生全面发展的、切实可行的应用化学专业人才培养的新模式。     

轻质隔热吸音仿石漆制备工艺研究

介绍了轻质隔热吸音仿石漆的研制过程,讨论了配方设计过程中原材料的选择要点,通过正交实验确定包覆型轻质仿石骨料制备的最佳工艺条件为:石粉质量分数为20%,液固比为10∶1(体积比),包覆次数为2次,搅拌速度为500 r/min,搅拌时间为60 min。实验研究还表明,影响涂料体系密度的最大因素是石粉浓度,最小因素是液固比;影响吸水率的最大因素是搅拌时间,最小因素是石粉浓度。     

纳米氧化锌光催化降解甲基橙的研究

以硝酸锌、聚乙烯吡咯烷酮为原料,反应温度为80℃,反应时间为8 h,通过加热煅烧制备出纳米氧化锌粉体,煅烧温度500℃可制备纳米级的ZnO粉末,平均粒径为32 nm;水溶液中甲基橙在ZnO光照催化下,能迅速分解。以甲基橙为脱色对象,讨论了催化剂用量、光照时间及pH值对光催化降解甲基橙性能的影响。     

浅谈化学专业本科毕业设计的教学指导方法

结合多年的本科生毕业设计教学指导的经验,对本科毕业设计的指导工作提出了几点建议。我们认为兴趣是先导,科研态度是保证,不同课题的针对性指导是关键。     

Study on fluorescence properties of rare earth complexes influenced by steric effect

The rare earth complexes Tb(o-BrBA)3,Tb(m-BrBA)3 and Tb(p-BrBA)3 were synthesized using o-,m-,p-bromo benzoic acids(2-bromo benzoic acid,3-bromo benzoic acid and 4-bromo benzoic acid) as ligand,respectively.The UV spectra showed that the absorption ability of Tb(m-BrBA)3 was the strongest.However,the fluorescent intensity of Tb(o-BrBA)3 was the weakest.The effect of the molecular structure,the energy level of Tb3+ and energy transfer efficiency from ligands to Tb3+ were discussed to explain the experimental results.The results indicated that,due to the large atomic radius of bromine,the steric effect caused by the different substitution bromine on the benzene ring might strongly affect the bond length formed by the coordination atoms and Tb3+.The longer the bond length was,the lower the efficiency of energy transfer was,and the weaker the fluorescent intensity was.     

Nd/ZnO制备及其光催化性能研究

以六水合硝酸锌、六水合硝酸钕和氨水为原料,采用直接沉淀法制备了纯净的氧化锌、掺杂钕的Nd/ZnO光催化剂,分别以甲基橙、亚甲基蓝、苯酚为光催化反应的模型化合物,考察了ZnO、Nd/ZnO光催化剂的紫外光催化活性。结果表明,当Nd在ZnO中掺杂质量百分数为0.5%时,三种模型化合物光催化降解率最大(甲基橙光催化降解率为85.9%,苯酚光催化降解率为27.8%,亚甲基蓝光催化降解率为71.2%);在相同条件下,三种模型化合物光催化降解率大小顺序为:甲基橙!亚甲基蓝!苯酚。     

学分制背景下应用化学专业实验课成绩评价体系的构建

文章介绍了国内外教育评价模式研究现状,分析了目前应用化学专业实验课评价模式中存在的主要问题,构建了应用化学实验课成绩评价新模式及评价指标新体系,并进行了推广应用,取得了很好的效果。     

Doped Organic Electroluminescence from a Novel Rare Earth Complex Tb （3-metho） 3 phen

A novel rare earth complex Tb (3-metho)3phen was synthesized and characterized. The complex was doped into PVK to improve the conductivity and film-forming property of Tb(3-metho) 3phen. A device with a structure of ITO/PVK: Tb(3-metho)3phen/Al was fabricated to study the eleetrolumineseent properties of Tb(3-metho) 3 phen. And the optoluminescent and AFM properties of this device were also studied, which proved the existence of energy transfer from PVK to Tb(3-metho)3phen. As a result, a pure green emission with sharp spectral band at 547.5 nm was observed.     

Emission of Rare Earth Complex Tb0.5Eu0.5 （asprin）3phen

The coprecipitate Tho.sEuo.5(asprin)3phen was synthesized. By doping the rare earth complex into polymer PVK, the EL device was fabricated with the structure of ITO/PVK: RE/PBD/AI. Compared with the device using PVK/Eu (asprin)3phen blend as the light emitting layer, the emission of Eu^3 in the PVK/Th0.5Eu0.5(asprin)3 phen blend is great-ly enhanced along with the quenching of the emission of PVK.