Abstract
The liquid-solid interface is of great importance in fundamental and applied research. However, the in-situ characterization of liquid-solid interfaces is very challenging. In this work, we demonstrated that {1H–29Si-}1H multiple-contact cross polarization with indirect detection (MCPi) solid-state nuclear magnetic resonance (ssNMR) spectroscopy is an excellent tool for studying dehydration and deuterium exchange at the solvent-silica interface. The results provided direct evidence that the physically adsorbed water molecules present on the silica surface were completely removed in the presence of DMSO, while the silanol groups were satisfactorily deuterated in the presence of a DMSO-D2O mixture. The knowledge obtained from the {1H–29Si-}1H MCPi experiment was also extended to the development of an 1H liquid-state NMR-based technique for the quantification of moisture and hydroxyls on inorganic and organic solids, as an alternative to the conventional thermogravimetric analysis (TGA) but with broader applicability. Moreover, this study offers a promising tool for studying the challenging questions involving liquid-solid interface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
