金属-硫脲配合物的结构复杂,种类繁多,为了解决其由于缺少热力学数据难以进行热力学分析的问题,将金属-硫脲配合物看成由简单有机物和离子组成,采用PeHbo方程、Misenrd估算法和D. F. Taylor法分别计算金属-硫脲配合物和简单有机物及离...金属-硫脲配合物的结构复杂,种类繁多,为了解决其由于缺少热力学数据难以进行热力学分析的问题,将金属-硫脲配合物看成由简单有机物和离子组成,采用PeHbo方程、Misenrd估算法和D. F. Taylor法分别计算金属-硫脲配合物和简单有机物及离子的标准摩尔热容.利用гepцa方程计算金属-硫脲配合物的标准摩尔生成熵,根据简单有机物和离子的标准摩尔生成焓和计算得到的标准摩尔生成熵,计算金属-硫脲配合物的标准摩尔生成自由能.通过对金属-硫脲配合物热力学数据的估算,为实现热力学分析在金属-硫脲配合物中的应用提供理论基础.展开更多
Web-like ZnO nanostructures have been successfully synthesized using the potassium nitrate route at various temperatures to simplify conventional preparation methods. The structures and morphologies of the as-prepared...Web-like ZnO nanostructures have been successfully synthesized using the potassium nitrate route at various temperatures to simplify conventional preparation methods. The structures and morphologies of the as-prepared products were characterized by X-ray powder diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). The results showed that the reaction temperature was an important parameter, and that there was a feedback effect between nano-structure and growth parameters, combined with in situ micro-calorimetry, the reaction rate constants of the three systems were found to have been: 2.43×10-6, 2.70×10-8 and 3.12×10-7s-1 respectively. Furthermore, based on the relationship governing the potential differences between nanoand bulk ZnO, thermodynamic functions of nano-ZnO such as standard molar entropy (Sm,ZnO(nano)), standard molar Gibbs free energy of formation (△rGm,ZnO(nano)), and standard molar enthalpy of formation (△rHm,ZnO(nano)) have been calculated by the electrochemical method.展开更多
文摘金属-硫脲配合物的结构复杂,种类繁多,为了解决其由于缺少热力学数据难以进行热力学分析的问题,将金属-硫脲配合物看成由简单有机物和离子组成,采用PeHbo方程、Misenrd估算法和D. F. Taylor法分别计算金属-硫脲配合物和简单有机物及离子的标准摩尔热容.利用гepцa方程计算金属-硫脲配合物的标准摩尔生成熵,根据简单有机物和离子的标准摩尔生成焓和计算得到的标准摩尔生成熵,计算金属-硫脲配合物的标准摩尔生成自由能.通过对金属-硫脲配合物热力学数据的估算,为实现热力学分析在金属-硫脲配合物中的应用提供理论基础.
基金supported by the National Natural Science Foundation of China (20963001,21273050)Guangxi Natural Science Foundation of China (0991001z,2011GXNSFB018021)
文摘Web-like ZnO nanostructures have been successfully synthesized using the potassium nitrate route at various temperatures to simplify conventional preparation methods. The structures and morphologies of the as-prepared products were characterized by X-ray powder diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). The results showed that the reaction temperature was an important parameter, and that there was a feedback effect between nano-structure and growth parameters, combined with in situ micro-calorimetry, the reaction rate constants of the three systems were found to have been: 2.43×10-6, 2.70×10-8 and 3.12×10-7s-1 respectively. Furthermore, based on the relationship governing the potential differences between nanoand bulk ZnO, thermodynamic functions of nano-ZnO such as standard molar entropy (Sm,ZnO(nano)), standard molar Gibbs free energy of formation (△rGm,ZnO(nano)), and standard molar enthalpy of formation (△rHm,ZnO(nano)) have been calculated by the electrochemical method.
