Methyltrimethoxysilane (MTMS)-based silica–iron oxide superhydrophobic nanocomposites

Design of multifunctional magnetic hybrid silica aerogels with improved properties

“…aerogels morphology shows almost the same pattern in both doped and undoped aerogels, with nanostructuration is seen, which is more intense in the case of [IOx] 0.2 -B_40_R_1 25. (micrograph (c) ofFig.…”

“…The surface area is less reduced in the case of the sample [IOx] 0.1 _B_40_R_1.25, which can possibly be ascribed to a more intense physical adsorption/interaction of N 2 with iron oxide phase when this is in the optimum amount.This behavior was also observed in the case of hydrophobic FeO x /SiO 2 nanocomposites, and metal-organic-frames (MOFs) having coordination polymers in the structure, or in flexible porous structures which contain pores may adjust and modify gas sorption properties by incorporation of ligand guest molecules[20,21,25]. However, this phenomenon is only observed at optimum dopant value of 0.1, while in the case of [IOx] 0.2 -B_40_R_1.25 the scenario is completely different, and S BET continues to decrease, which is attributed to the pore collapsing as a consequence of the great extent of shrinkage upon ambient pressure drying.…”

“…Although the overall N 2 adsorption in the [42], iron oxide doped cellulose [43] as well as in hydrophobic FeO x /SiO 2 [25].…”

“…To name just few of the mostly explored strategies, mixed phase of silica and iron oxide was obtained by: i) simultaneous formation of the iron oxide phase and silsesquioxane/silica through mixing iron salts with the initial silica sol at molecular level; ii) embedding, at nano level, preformed magnetite (Fe 3 O 4 ) and maghemite (γ-Fe 2 O 3 ) phases (or other iron oxide phases) into the silica sol before polycondensation of silane moieties [25][26][27][28][29][30][31][32][33].…”

Facile fabrication of superhydrophobic sand: Potential advantages for practical application in oil–water separation

“…The collection of oil is often preferred because it allows proper disposal of oil. To enhance recovery of the oil, researchers have mostly commonly developed oil-water separation materials through conferring opposite wetting behavior to water and oil on material substrates [6]; and approaches adopted to realize this goal include mold pressing [7,8], phase separation [9], dip coating [10][11][12][13], chemical vapor deposition [14], wet-chemical method [15] and others [16][17][18][19][20][21][22][23][24][25][26]. However, some of the materials usually required complicated and expensive fabrication procedures, while others displayed limited reusability.…”