Cu2O/Ag复合物的合成及SERS原位分析其可见光催化降解活性

A multifunctional Cu₂O/Ag micro-nanocomposite, which has the characteristics of high catalytic activities under the visible light and high surface-enhanced Raman scattering (SERS) activity, was fabricated via a facile method and employed for the in situ SERS monitoring of the photocatalytic degradation reaction of crystal violet. Through the variation of the AgNO₃ concentration, Ag content on the Cu₂O template can be controllably tuned, which has great influence on the SERS effect. The results indicate that Ag nanoparticles form on the Cu₂O nanoframes to obtain the Cu₂O/Ag nanocomposite, which can act as an excellent bifunctional platform for in situ monitoring of photocatalytic degradation of organic pollutions by SERS.     

普通化学案例教学与学生自主学习能力的培养

通过三个案例教学实践,探讨在普通化学模块化教学中如何将教师的有效引导与学生的自主学习相结合。倡导以学生为主体、以能力输出为导向的人才培养模式,实现工科专业学生化学素养的提高和自主学习能力的提升。     

基于LM-BP神经网络算法饱和醇结构拓扑指数与保留指数相关性的研究

基于LM-BP神经网络算法,建立了饱和醇结构拓扑指数和物理化学性质与在不同固定相上保留指数相关性的人工神经模型.网络的传输函数都是线性的(Purelin函数),隐含层有3个神经元.饱和醇包括带有伯、仲、叔基官能团的直链和支链醇.讨论了隐含层神经元数对神经网络的影响,由19个饱和醇得到的网络适合预测测试醇的精确保留指数....