重负离子复合物在软电荷界面形成独特的水结构

2019/03/06   下载量： 3 次

方案摘要

方案下载
应用领域 石油/化工
检测样本 其他
检测项目 可靠性能
参考标准 暂无

采用由立陶宛Ekspla公司的PL2231型高功率皮秒激光器和光学参量发生器等设备构成的振动和频光谱测量系统，对重负离子复合物在软电荷界面形成独特的水结构的现象进行了实验研究。

方案下载
配置单
方案详情

       Ion hydration and interfacial water play crucial roles in numerous phenomena ranging from biological to industrial systems. Although biologically relevant (and mostly smaller) ions have been studied extensively in this context, very little experimental data exist about molecular scale behavior of heavy ions and their complexes at interfaces, especially under technologically significant conditions. It has recently been shown that PtCl62- complexes adsorb at positively charged interfaces in a two-step process that cannot fit into well-known empirical trends, such as Hofmeister series. Here, a combined vibrational sum frequency generation and molecular dynamics study reveals that a unique interfacial water structure is connected to this peculiar adsorption behavior. A novel sub-ensemble analysis of MD simulation results show that after adsorption, PtCl62- complexes partially retain their first and second hydration spheres, and it is possible to identify three different types of water molecules around them based on their orientational structures and hydrogen bonding strengths. These results have important implications for relating interfacial water structure and hydration enthalpy to the general understanding of specific ion effects. This in turn influences interpretation of heavy metal ion distribution across and reactivity within, liquid interfaces.

上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 酶、非酶分子的表面化学，光谱学研究及其应用

文献贡献者

北京欧兰科技发展有限公司
金牌会员 丨 第17年
查看全部资料
推荐方案
更多

相关产品

当前位置： 仪器信息网 欧兰科技 方案 重负离子复合物在软电荷界面形成独特的水结构

关注

拨打电话

留言咨询