溶胶凝胶法制备光催化薄膜材料及其性能表征

采用溶胶凝胶法制备TiO2胶体,再采用旋涂法在玻璃基体上负载得到TiO2薄膜,并对制备的TiO2结构进行表征,以2,4 二氯苯酚为探针,考察薄膜的光催化性能.通过实验,学生基本了解溶胶-凝胶法的原理、薄膜的制备方法、光催化剂的性能表征,可以作为开放性实验.     

光固化阻燃单体、树脂合成及其阻燃机理研究

本文综述了过去十余年间中国科技大学施文芳教授研究组在光固化阻燃技术领域的工作成果，主要包括活性单体、稀释剂、光固化树脂配方等体系，品类有磷酸酯类单体、含磷丙烯酸酯、超支化丙烯酸酯树脂、膦酸酯类单体和树脂、丙烯酸化环状磷腈、甲基丙烯酸化三聚氰胺、含磷环氧单体等十余种。同时介绍了这些配方体系的合成、性能和应用方法，以及对其热降解、阻燃性能评价和阻燃机理的研究。     

孔雀石绿在镁铝水滑石负载纳米氧化锌上的快速光降解

用共沉淀法制备Mg-Al水滑石纳米粉,ZnO纳米颗粒均相地覆盖在Mg-Al水滑石表面. 在500 ℃煅烧4 h后,采用XRD和SEM分析晶体结构和形貌. 研究表明在Mg-Al水滑石表面成功地制备了纳米ZnO. 所获得的纳米ZnO光催化剂对孔雀石绿表现出高的光催化降解性能. 归因于ZnO表面的高光催化活性以及Mg-Al水滑石较好的吸附性能,其中Mg-Al水滑石层片结构起了重要作用.     

电解质材料Sr-和Mg-掺杂LaGaO3的制备及性能研究

A dense La_0.8Sr_0.2Ga_0.83Mg_0.17O_2.815 electrolyte in pure perovskite phase was prepared by a polyacrylic acid assisted solid state reaction method, and the effects of La source on the structure and electrochemical performance were also studied. By means of XRD and SEM, the structure of this material was characterized, and the electrochemical properties were studied through AC impedance diagram. The results show that the sample presents a single perovskite-type phase after sintering at 1 450 ℃ and the relative density is 94%. The specimen has the lower activate energy and higher electrical conductivity at 600 ℃. There are two different activation energy at the turning point of 650 ℃, which are 74.6 and 42.4 kJ·mol^-1, respectively. The electrical conductivity is 0.057 S·cm^-1 and 0.017 S·cm^-1 at the temperature of 800 ℃ and 600 ℃, respectively.