Polysiloxane‐Based Block Copolymers as Structure‐Directing Agents in the Synthesis of Hierarchically Organized Silica Monoliths

Abstract

Abstract. In this work the successful application of commercially available, linear PEO-PDMS-PEO block copolymers in the synthesis of hierarchically organized silica monoliths comprising a periodic arrangement of mesopores as well as a well-defined macroporous morphology is presented. All silica monoliths were synthesized via the

Highly salt-resistant and all-weather solar-driven interfacial evaporators with photothermal and electrothermal effects based on Janus graphene@silicone sponges

“…18 This network is conducive to light absorption, rapid liquid transport by capillary action and vapor diffusion via natural convection. 14,[24][25][26][27] For practical applications, high mechanical strength, flexibility and stability of SI evaporators are desired but paid little attention. [28][29] The p-GS sponges are strong, superelastic and flexible owing to inherent excellent mechanical properties of the silicone sponge and reinforcement by the graphene coating ( Supplementary Fig.…”

Sol–gel synthesis of monolithic materials with hierarchical porosity

“…Thus, the network structure is not only influenced by the type of diol that has been used to modify the silane, 61 but also by the choice of acid that is used to start the sol-gel reactions 63 or the amphiphilic molecule that is added as phase separation agent. 64 Other precursors that have been applied in the synthesis of silica monoliths with bimodal pore systems are based on triethanolamine solution with the corresponding silatrane silane derivates. 65 Monoliths with 4 nm mesopores and a second level of pores with sizes of 30-60 nm are obtained in the presence of the cationic surfactant CTAB.…”

Monolithic porous magnesium silicide

“…25,32 After gelation, the wet gel bodies were allowed to age at 40°C for seven days. To extract the surfactant, the whole gel body was immersed in a trimethylchlorosilane-petroleum ether (1 : 10 wt/wt) solution for 10 hours.…”