Year-end Sale % OFF 
Abstract
The electron spin resonance of the Mn(H 2O) 6 2+ ion in aqueous solution adsorbed on silica gels with narrow and wide pores has been used to investigate the properties of the water filling the pores as well as the solid-liquid interaction. The analysis of the electron spin relaxation rate has shown the occurrence of a decreased mobility of water inside narrow pores with respect to water inside the wide pores, where it behaves as bulk water. The existence of a distribution of correlation times for the motion of Mn(II) complexes in such systems has been interpreted in terms of a gradient of mobility of water from the surface to the middle of the pores. The ESR lineshape at 77°K has made it possible to evaluate the distance from the surface at which secondary interactions are effective on the paramagnetic probe. This distance was found to be 2–3 nm. Moreover, the lineshape analysis allowed an investigation of the freezing properties of water in the different regions in the pores.
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 callDisclaimer: 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.
