In this work, a series of polymer materials including pomelo peel, cotton fabric, polyurethane foam, and so on, are treated by heated CH₃SiCl₃, presenting desirable photo-thermal conversion function and hydrophobicity. As a representative material, the surface element and skeleton morphology of pomelo peel foam treated by CH₃SiCl₃ are analyzed detailedly. It is found that well-hydrophobicity (water contact angle of ~147^o) and photo-thermal conversion performance (~91.2 ^oC under one sun) are attributed to the surface carbonization reaction and formation of CH₃-SiO₂ nanoparticles. Meanwhile, the treatment of CH₃SiCl₃ significantly increases the BET surface area to 3.0635 m²/g from 0.0973 m²/g. Therefore, pomelo peel-derived carbon foam presents a desirable adsorption capacity of organic solvents and oils (up to 43.2 times its original weight) and excellent removal efficiency (>99.0%). In addition, the rapid photo-thermal response (achieve ~73 ^oC at 40 s) and high equilibrium temperature (~91.2 ^oC) are als^o demonstrated in pomelo peel-derived carbon foam. As a result, the absorption rate of highly-viscous oils is effectively promoted by the higher fluidity and capillary action caused by the solar-promoted mechanism. This study offers a scalable, easily operated, and environmentally friendly approach to prepare hydrophobic and photo-thermal materials, thus demonstrating a huge potential in oil/water separation application.

本工作将柚皮、棉织物、聚氨酯泡沫等一系列高分子材料通过加热的CH ₃ SiCl ₃处理，具有良好的光热转换功能和疏水性。作为代表材料，详细分析了CH ₃ SiCl ₃处理的柚皮泡沫的表面元素和骨架形貌。发现良好的疏水性（水接触角~147 ^o）和光热转换性能（在一个太阳下~91.2 ^o C）归因于表面碳化反应和CH ₃ -SiO ₂纳米颗粒的形成。同时，处理 CH ₃ SiCl ₃将 BET 表面积从 0.0973 m²/g 显着增加至 3.0635  m²  /g。因此，柚皮衍生的碳泡沫对有机溶剂和油类具有理想的吸附能力（高达其原始重量的 43.2 倍）和出色的去除效率（>99.0%）。此外，快速的光热响应（在 40秒时达到 ~73 ^o C ）和高平衡温度（~91.2 ^o C）^也是   在柚皮衍生的碳泡沫中得到证明。因此，太阳能促进机制引起的较高流动性和毛细作用有效地促进了高粘度油的吸收率。该研究提供了一种可扩展、易于操作且环保的方法来制备疏水和光热材料，从而展示了油/水分离应用的巨大潜力。