Fast and efficient cleanup of high-viscosity oil spills on the sea is still a global challenge today. Traditional recycling methods are either energy demanding or inefficient. Hydrophobic/oleophilic sorbents are promising candidates to handle oil spills, but they have limited ability to recover high viscosity oil. In this work, we report a superhydrophobic/oleophilic carbon nanotubes (CNT) and polypyrrole (PPy) coated melamine sponge (m-CNT/PPy@MS). The CNT/PPy coating enables the sponge to convert light and electricity to heat, ensuring that the absorbent can adapt to various working environments. The rapid heat generation on the sponge surface can significantly reduce the viscosity of crude oil and accelerate the absorption rate, thereby achieving the purpose of rapid recovery of oil spills. Under one sun illumination (1.0 kW/m²) and an applied voltage (8 V), the surface temperature of the m-CNT/PPy@MS can reach 118.6 °C. The complete penetration time of oil droplets is 93.5% less than that of an unheated sponge. In addition, under half sun irradiation intensity and 11 V, the porous sponge absorbed 6.92 kg/m² of crude oil in the first minute, which is about 31 times as much as that of an unheated sponge. Finally, we demonstrate a continuous absorption system, consisting of a self-heating m-CNT/PPy@MS and peristaltic pump, that can continuously recover oil spills on the sea surface. In view of its unique design, lower cost and fast oil absorption speed, this work provides a new option to tackle large-scale oil spill disasters on the sea surface.

快速有效地清除海上高粘度漏油仍然是当今的全球挑战。传统的回收方法要么耗能，要么效率低下。疏水/亲油吸附剂是处理溢油的有希望的候选者，但它们回收高粘度油的能力有限。在这项工作中，我们报告了超疏水/亲油性碳纳米管（CNT）和聚吡咯（PPy）涂覆的三聚氰胺海绵（m-CNT / PPy @ MS）。CNT / PPy涂层使海绵能够将光和电转换为热量，从而确保吸收剂能够适应各种工作环境。在海绵表面快速生热可以显着降低原油的粘度，加快吸收速度，从而达到快速回收漏油的目的。一次阳光照射下（1.0 kW / m²）和施加的电压（8 V），m-CNT / PPy @ MS的表面温度可以达到118.6°C。油滴的完全渗透时间比未加热的海绵缩短了93.5％。此外，在一半的太阳辐射强度和11 V下，多孔海绵在第一分钟内吸收了6.92 kg / m ²的原油，约为未加热海绵的31倍。最后，我们展示了一个连续吸收系统，该系统由一个自加热的m-CNT / PPy @ MS和蠕动泵组成，可以连续回收海面溢油。鉴于其独特的设计，较低的成本和快速的吸油速度，这项工作为应对海面的大规模溢油灾难提供了新的选择。