Wang Jintao, Geng Guihong
College of Materials Science and Engineering, Yinchuan 750021, PR China.
College of Materials Science and Engineering, Yinchuan 750021, PR China.
Mar Pollut Bull. 2015 Aug 15;97(1-2):118-124. doi: 10.1016/j.marpolbul.2015.06.026. Epub 2015 Jun 16.
Inspired by the adhesion of marine mussels, a kind of superhydrophobic oil sorbent was successfully fabricated by robustly immobilizing the micro/nanostructure layer onto the sponge skeleton. The as-prepared sponges possess excellent hydrophobicity with the water contact angle of 154°, which enables the sponge to selectively absorb various oils floating on water surface. The oil sorption capacities of as-prepared sponge for a series of oils can reach 18.3-46.8g/g. The absorbed oil can be recovered by mechanical squeezing and the resulting sponge can be recycled more than 70 cycles while still keeping high oil sorption capability. More importantly, the obtained sponge has excellent affinity to the high viscosity oils. Therefore, the as-prepared sponge might find practical applications in the large-scale removal of oils especially high viscosity oils from water surface.
受海洋贻贝附着力的启发，通过将微/纳米结构层牢固地固定在海绵骨架上，成功制备了一种超疏水吸油剂。所制备的海绵具有优异的疏水性，水接触角为154°，这使得海绵能够选择性地吸收漂浮在水面上的各种油类。所制备海绵对一系列油类的吸油能力可达18.3-46.8g/g。通过机械挤压可回收吸附的油，所得海绵可循环使用70多次，同时仍保持高吸油能力。更重要的是，所获得的海绵对高粘度油具有优异的亲和力。因此，所制备的海绵可能在大规模去除水面上的油特别是高粘度油方面找到实际应用。
