【摘要】 沙子作为一种天然物质在沙漠中大量存在，因其超亲水特性而没有得到有效广泛的利用。本研究以沙子作为基底材料，在其表面自组装纳米银粒子，再经十八烷基硫醇修饰后沙子显示出超疏水-超亲油特性(水滴的接触角为160°;油滴的接触角为0°)。利用沙子表面超疏水特性，不但可以选择性分离轻油、重油以及油和水形成的乳浊液，还可以在沙漠环境中实现水的储存。相关研究有望为污水治理材料的制备及防治土地沙化提供一种新思路。更多还原

【Abstract】 As a natural substance, sand is abundant in deserts, but it has not been widely used due to its superhydrophilic.In this study, sand was used as the substrate and silver nanoparticles were assembled on its surface, after modification with octadecanethiol, the sand possess superhydrophobic-superhydrophilic properties(contact angle of water droplets was 160°, contact angle of oil droplets was 0°). The superhydrophobic properties of sand surface can not only selectively separate the light oil on water from the heavy oil under water, but also efficiently separate the emulsion formed by oil and water and realize water storage in desert environment.The related research is expected to provide a new idea for the preparation of sewage treatment materials and the prevention of land desertification.更多还原