Graphene aerogel with good mechanical properties and elasticity were extensively investigated for oil adsorbent. Herein, polyvinyl alcohol-graphene aerogel was prepared using Pickering emulsion method with polyvinyl alcohol being used as crosslinking agent and ethylenediamine (EDA) was used as reductant. The droplets of the Pickering emulsion played the role of soft templates during the aerogel preparation, and the droplets size was adjusted by adding different amount of butanol. When the content of EDA increases from 0.5 to 0.9%, the volume of aerogel gradually increases and its outer surface becomes smoother. However, when the content of EDA reaches 1%, aerogel becomes smaller and the outer surface becomes coarser. It was found that the compression stress and EDA content are positively correlated by simple manual extrusion. Compression-rebound test and Young's modulus calculation results indicated that the mechanical properties of aerogel can be effectively influenced by pre-freezing process. The fold degree of the wall, the maximum stress and Young's modulus of the aerogel increase gradually when prolonging pre-freezing time. The polyvinyl alcohol-graphene aerogel prepared by pre-freezing for 48 h with a density of 5.07 mg cm⁻³, a porosity of up to 99.8%, and a pore volume of 196.84 cm³ g⁻¹ achieved instantaneous adsorption of oil slick on water. And the pore occupancy reached 93.31% under the saturated adsorption state on pure oil.

对具有良好机械性能和弹性的石墨烯气凝胶进行了广泛的油吸附剂研究。在此，使用Pickering乳液法以聚乙烯醇为交联剂，以乙二胺（EDA）为还原剂，制备聚乙烯醇-石墨烯气凝胶。Pickering乳液的液滴在气凝胶制备过程中起着柔软模板的作用，并且通过添加不同量的丁醇来调节液滴的大小。当EDA的含量从0.5％增加到0.9％时，气凝胶的体积逐渐增加，其外表面变得更光滑。然而，当EDA的含量达到1％时，气凝胶变小并且外表面变粗糙。发现通过简单的手工挤压，压应力和EDA含量正相关。压缩回弹试验和杨氏模量计算结果表明，预冻过程可有效影响气凝胶的力学性能。当延长预冷冻时间时，壁的折叠度，最大应力和气凝胶的杨氏模量逐渐增加。通过预冷冻48小时制成的聚乙烯醇-石墨烯气凝胶，密度为5.07 mg cm^-3，孔隙率高达99.8％，孔体积为196.84 cm ³  g ^-1，使浮油瞬间吸附在水上。在纯油的饱和吸附状态下，孔的占有率达到93.31％。