▎ 摘　　要

Silica aerogels are prone to be destroyed due to their brittleness and low mechanical properties, which limits their applications. To break the unfavorable situation, we presented a scalable and facile approach to assemble blocky silica-reduced graphene oxide (SiO2-rGO) hybrid sponges by atmospheric pressure drying technique. Briefly, ungelled silica solution from two-step sol-gel of tetraethoxysilane (TEOS), was incorporated into compressible graphene sponge (CGS). Different silicon concentration ratios had great influence on the performance of hybrid sponges. When V-TEOS: V-ethanol was fixed at 1:15, the sample had good flexibility and could absorb 8.5-10.2 times its own mass of solvents, but the adsorption efficiency slightly decreased with the increase of the number of experiments. When V-TEOS: V-ethanol was fixed at 4:7, the SiO2-rGO hybrid sponges exhibited unbroken shape, low volume shrinkage (24%), large specific surface area (803.351 m(2)/g), and high mass retention (83.64%) at 790 degrees C of thermal treatment. Moreover, they could support approximately 146 times their weight without structural damage, and possess excellent hydro-phobicity with 129 +/- 1 degrees of water contact angle. These superior properties enable SiO2-rGO hybrid sponges to exhibit highly efficient absorption of oils and toxic solvents, to be regenerated (10 times) with the full release of adsorbates by heat treatment.