Effect of thermal treatment on hydrophobicity of methyl-functionalised hybrid nano-silica particles

Design and Synthesis of a Water-Resistant Mesoporous Silica Gel for the VOC Adsorption–Desorption Treatment

“…The XRD patterns of commercial and synthetic silica gels under different conditions are shown in Figure b. The diffraction patterns are observed to be similar without any crystalline peaks, revealing the noncrystalline nature of both phenyls functionalized and pristine silica gel materials . In XRD patterns, a slight decrease in the short-range ordering of H-SG-2 is also observed, which is confirmed by the fact that the broad peak is shifted to a lower 2θ (from 23.7 to 21.8°) and is further weakened.…”

“…The diffraction patterns are observed to be similar without any crystalline peaks, revealing the noncrystalline nature of both phenyls functionalized and pristine silica gel materials. 37 In XRD patterns, a slight decrease in the short-range ordering of H-SG-2 is also observed, which is confirmed by the fact that the broad peak is shifted to a lower 2θ (from 23.7 to 21.8°) and is further weakened. This is because the Si−OH groups in the H-SG-2 matrix are replaced by the Si−C 6 H 5 groups.…”

Superhydrophobic and oleophilic micro‐nano hierarchical Pd‐decorated SiO2 layers

“…The MTES stabilizes the SiO 2 particles in the sol and increases the hydrophobicity of the final material . Indeed, by adding MTES to TEOS, a larger number of superhydrophobic silica particles can be formed . First, the MTES and TEOS were mixed (1:1 molar ratio) after stirring for 2 hours at room temperature.…”

“…25 Indeed, by adding MTES to TEOS, a larger number of superhydrophobic silica particles can be formed. 26 First, the MTES and TEOS were mixed (1:1 molar ratio) after stirring for 2 hours at room temperature. Second, a solution containing deionized water, ethanol, and HCl (molar ratio of 9:6:0.03) was prepared in a separate beaker at room temperature.…”