Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
August 20, 2026Analysis & SensingOpen Access

NMR Investigation of Water in Mesoporous Silica Materials With Different Surfaces

View Full Paper
Ask AI
Bookmark
Share

Authors

YZYanjing ZhaoCWChristian WeinbergerMTMichael Tiemann

Discussion

Loading...

Member takes

Overview

Spectroscopic investigation demonstrates axial pore-filling by water in mesoporous silica regardless of surface hydrophilicity, indicating identical filling mechanisms across modified surfaces.

Key Points

  • To determine how changes in surface hydrophilicity affect the wetting and pore-filling behavior of water in mesoporous silica.
  • Compared standard hydrophilic MCM-41 silica with a partially hydrophobicized material prepared by trimethylsilylation.
  • Characterized structural and surface properties using X-ray diffraction, nitrogen physisorption, thermogravimetric analysis, infrared spectroscopy, and density functional theory.
  • Tracked water behavior using proton solid-state nuclear magnetic resonance (NMR) spectroscopy with magic-angle spinning.
  • Trimethylsilylation reduced the average pore diameter from 3.8 nm to 3.6 nm.
  • Water fills narrow silica mesopores following an axial mode regardless of whether the pore surface is hydrophilic or hydrophobicized.
  • Proton NMR spectra revealed two distinct signals representing physisorbed water exchanging with surface silanols and bulk-like water within fully filled pores.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6a86b56c8a91293e6a1ccd79https://doi.org/10.1002/anse.70109
View Full Paper
Ask AI
Bookmark
Share

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Assessment of Hydrophilicity/Hydrophobicity in Mesoporous Silica by Combining Adsorption, Liquid Intrusion, and Solid-State NMR Spectroscopy2024 · 14 citations
  2. 2Characterizing the Behavior of Water Interacting with a Nano‐Pore Material: A Structural Investigation in Native Environment Using Magnetic Resonance Approaches2024 · 1 citations
  3. 3Exploring the Competitive Adsorption of Water–Ethanol Mixtures within Mesoporous Silicas2025
  4. 4NMR Relaxation Dispersion of Liquids Adsorbed on Modified Surfaces of SBA-15 Mesoporous Silica2024 · 1 citations
  5. 5Achieving Tunable Hydrophobicity on Silica Surfaces: Interplay Between Silane Type, Surface Morphology, and Reaction Conditions2026 · 1 citations