地方师范院校材料化学专业课程体系的构建与实践

以曲阜师范大学为例,从基础性、系统性、特色性理论课程体系和实验实践课程体系2个方面,构建了符合地方师范院校办学实际的材料化学专业课程体系。这一体系以培养学生的研究能力和工程意识为主要目标,在实践中取得了较好的效果。     

Saucer-and Rod-like WO_3 3-D Microstructures:Synthesis,Characterization,and Optical Properties

Three-dimensional(3-D)saucer-and rod-like WO3 microstructures have been synthesized by a simple hydrothermal route using tartaric acid as the assistant agent.X-ray powder diffraction(XRD)patterns indicate that the as-prepared samples are the pure hexagonal phase WO3.The morphologies are characterized by scanning electron microscope(SEM)and are found to be highly sensitized to the reaction temperature.A probable formation mechanism of the WO3 microstructures from saucer-like at low temperatures to rod-like at high temperatures is proposed.The optical properties of the novel WO3 microstructures are studied by UV-vis diffuse reflectance spectroscopy(DRS).The mechanism of strong absorption at visible region and red shift of calcined sample is also discussed.