Raman investigation of hydration structure of iodide and iodate  

作　　者：Zhe Liu Hong-Liang Zhao Hong-Zhi Lang Ying Wang Zhan-Long Li Zhi-Wei Men Sheng-Han Wang Cheng-Lin Sun 刘喆;赵洪亮;郎鸿志;王莹;李占龙;门志伟;汪胜晗;孙成林(Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education),College of Physics,Jilin University,Changchun 130012,China;Coherent Light and Atomic and Molecular Spectroscopy Laboratory,College of Physics,Jilin University,Changchun 130012,China;College of Aviation Foundation,Aviation University of Air Force,Changchun 130000,China)

机构地区：[1]Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education),College of Physics,Jilin University,Changchun 130012,China [2]Coherent Light and Atomic and Molecular Spectroscopy Laboratory,College of Physics,Jilin University,Changchun 130012,China [3]College of Aviation Foundation,Aviation University of Air Force,Changchun 130000,China

出　　处：《Chinese Physics B》2021年第4期226-230,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11374123 and 12004132);Science and Technology Planning Project and Talent Project of Jilin Province,China(Grant Nos.20170204076GX,20180101006JC,20180101238JC,20190201260JC,20200201179JC,2019C0355-5,JJKH20200935KJ,and JJKH20200936KJ)。

摘　　要：In the troposphere,the destruction of ozone and the formation of new particles are closely related to the iodine content,which mainly comes from iodide(I^(-)) and iodate(IO_(3)^(-)) in the seawater.Therefore,understanding the interactions between I^(-),IO_(3)^(-)and water molecules plays a certain role in alleviating the destruction of the ozone layer.Raman spectroscopy is commonly used to obtain the information of the interaction between I^(-),IO_(3)^(-)and water molecules quickly and accurately.Herein,the effect of I^(-)and IO_(3)^(-)on the change in Raman band characteristics of water is investigated to reflect the associated intermolecular interactions change.With the addition of the two ions,the Raman band corresponding to OH stretching vibration moves towards the high wavenumber,indicating the formation of hydration structure.The narrowing of the Raman band from OH stretching vibration under weak hydrogen bond agrees well with the hydrogen bond variation,while the abnormal broadening of the Raman band from OH stretching vibration under strong hydrogen bond indicates the formation of H-down structure.With the increase of ions concentration,the frequency shift of the Raman band from OH stretching vibration under both weak and strong hydrogen bonds becomes more apparent.Meanwhile,the frequency shift of I^(-)is more obvious than that of IO_(3)^(-),which indicates that I^(-)is more likely to form the hydration structure with water than IO_(3)^(-).These results contribute to analyzing the different interactions between I^(-)-water and IO_(3)^(-)-water,then helping to prevent ozone depletion.

关 键 词：Raman spectroscopy hydrogen bond hydration structure 

分 类 号：O641.3[理学—物理化学]