In-situ discrimination of the water cluster size distribution in aqueous solution by ToF-SIMS

作     者：Ying-Ya Liu Yi-Lun Ying Xin Hua Yi-Tao Long 

作者机构：Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering East China University of Science and Technology 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2018年第61卷第2期

页      面：159-163页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (21421004, 21705046) Innovation Program of Shanghai Municipal Education Commission (2017-01-07-00-02E00023) the Programme of Introducing Talents of Discipline to Universities (B16017) the Program of Shanghai Subject Chief Scientist (15XD1501200) the Fundamental Research Funds for the Central Universities (222201718001, 222201717003, 222201714012) 

主　　题：In situ ToF SIMS water clusters liquid water microfluidic chip 

摘      要：The size distribution and molecular structure of water clusters play a critical role in the chemical,biological and atmospheric *** common experimental study of water clusters in aqueous solution is challenged due to the influence of local H-bonding environments on vibration spectroscopies or vacuum requirements for most mass spectrometry ***,the time-of-flight secondary ion mass spectrometry（To F-SIMS）combining with a microfluidic chip has been applied to achieve the in-situ discrimination of the size distribution for water clusters in liquid water at room *** results demonstrated that the presented method is highly system stable,reproducible and *** comparison of heavy water with pure water was made to further demonstrate the accuracy of this *** results showed that（H2O）3H-＋ and （D2O）4D-＋ are the most dominant clusters in pure and heavy water,*** one water molecule difference in the dominant cluster size may due to the nuclear quantum effects on water’s hydrogen bonded *** is the first time to experimentally show the size distribution of water clusters over a wide range（n=1–30）for pure