Interfacial Phenomena at Surfaces of Structurally Ordered Silicas

3 INTERFACIAL PHENOMENA AT SURFACES OF STRUCTURALLY ORDERED SILICAS 

The behavior of bound water in mesoporous silicas was studied by NMR spectroscopy (giving temperature dependence of transverse relaxation time and chemical shift of the proton resonance), XRD (freezing/melting behavior and ice crystalline structure), TSDC (relaxation phenomena for bound water depending on temperature and pore structure), FTIR and Raman spectroscopies (characteristics of adsorption sites and water binding), and other methods (see previous chapters and Sklari et al. 2001, Sliwinska-Bartkowiak et al. 2001). 

Nuclear Magnetic Resonance Studies of Interfacial Phenomena 

FIGURE 1.271 Room-temperature H solid-state NMR spectra of water adsorbed onto (a) MCM-41 =4.0 nm) and (b) SBA-15 (d=8.9 nm) at different number of water molecules (Wh o) of the pore 

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