福州大学赖跃坤团队报道了受莲花和变温动物启发的PPy/PDMS@Nonwoven织物吸附剂，具有优异的光热效应，用于高粘度原油的净化。相关研究成果于2024年12月26日发表在国际顶尖学术期刊《中国化学》上。

石油泄漏的频繁发生不仅造成了石油资源的浪费，也对海洋生态环境构成了严重威胁。考虑到大量高粘度原油，迫切需要开发一种能够有效降低粘度的吸附剂来清理漏油。

受“莲花效应”和“利用太阳能进行温度调节的变温”的启发，研究人员将低表面能材料聚二甲基硅氧烷（PDMS）和聚吡咯（PPy），负载在岛状非织造织物上，制备了一种新型原油吸附材料。非织造织物实现了高效的光热转换。其中，使用无氟PDMS对非织造布进行疏水改性，使其具有优异的油水分离性能，分离效率高达95%。

经过10次循环后，PPy/PDMS改性非织造布（PPy）的分离效率/PDMS@NF)仍在90%以上，显示出优异的可回收性。此外，PPy/PDMS@NF具有自清洁能力。在光照条件下，PPy/PDMS@NF被迅速加热，降低了原油的粘度，使溢油得以有效回收。在一个标准光照（1.0 kW·m^–2）下，PPy/PDMS@NF的表面温度达到60.7℃，对高粘度原油的吸附能力达到7g原油·gsorbent^-1。

由于其环保性和出色的吸附能力，该研究为处理高粘度海洋石油泄漏提供了一种新的选择。

附：英文原文

Title: Lotus and Poikilotherm Inspired PPy/PDMS@Nonwoven Fabric Sorbent with Superior Photothermal Effects for the Cleanup of High-viscous Crude Oil†

Author: Hiroshi Fu, Yang Chen, Tong Zhang, Xi Wang, Songnan Zhang, Jianying Huang, Di Zhang, Xiaoming Qian, Yuekun Lai

Issue&Volume: 2024-12-26

Abstract: The frequent occurrence of oil spills not only results in the waste of petroleum resources, but also poses a serious threat to the marine ecological environment. Considering the large amount of crude oils with high viscosity, it is urgent to develop a sorbent capable of efficiently reducing the viscosity for the cleanup of oil spills. Inspired by the “lotus effect” and “poikilotherm which utilize the solar energy for thermoregulation”, the low surface energy material polydimethylsiloxane (PDMS) and polypyrrole (PPy) were loaded over the island nonwoven fabric to fabricate a novel crude oil sorbent material. The nonwoven fabric achieved an efficient photothermal conversion. Wherein, the fluorine-free PDMS was used to hydrophobically modify the nonwoven fabric, endowing it with excellent oil-water separation performance, with a separation efficiency of up to 95%. After 10 cycles, the separation efficiency of PPy/PDMS modified nonwoven fabric (PPy/PDMS@NF) was still above 90%, demonstrating superior recyclability. In addition, the PPy/PDMS@NF possessed the self-cleaning capabilities. Under light conditions, the PPy/PDMS@NF was rapidly heated up, reducing the viscosity of crude oil and enabling the effective recovery of oil spills. Under one sun illumination (1.0 kW·m–2), the surface temperature of the PPy/PDMS@NF reached 60.7 °C, and its sorption capacity for high-viscosity crude oil reached 7 gcrude oil·gsorbent–1. Thanks to its environmental friendliness and excellent sorption capacity, this work provides a new option for dealing with the high-viscosity marine oil spills.

DOI: 10.1002/cjoc.202401014

Source: https://onlinelibrary.wiley.com/doi/full/10.1002/cjoc.202401014