Structured cone arrays for continuous and effective collection of micron-sized oil droplets from water
Structured cone arrays for continuous and effective collection of micron-sized oil droplets from water
复制标题
结构化锥形阵列可连续有效地从水中收集微米级油滴
DOI：
10.1038/ncomms3276
复制
发表时间：
2013-08-01
影响因子：
16.6
通讯作者：
Jiang, Lei
中科院分区：
文献类型：
--
作者：
Li, Kan;Ju, Jie;Jiang, Lei
环境保护机构和石油工业需要有效的方法将微米级的油滴从水中分离出来。然而，对于大多数现有的分离方法，相分离发生在油水混合物中。剩余的不受相分离影响的微米级油滴，由于缺乏分离能力或吞吐量不足，难以用常规方法进行大规模处理。在这里，我们开发了一种亲油的锥形针状结构阵列，用于收集微米大小的油滴，灵感来自于在锥形仙人掌刺上收集类似大小的水滴。在水下，这些结构模仿仙人掌，可以捕获微米大小的油滴，并不断地将它们输送到锥形针的底部。该结构材料在微米级集油方面具有明显的优势，具有高连续性和高通量。
Environmental protection agencies and the petroleum industry require effective methods to separate micron-sized oil droplets from water. However, for most existing separation methods, phase separation occurs in the oil-water mixture. The remaining micron-scale oil droplets, which are not affected by phase separation, are difficult to handle with conventional methods on a large scale because of either a lack of separation ability or drawbacks in throughput capacity. Here we develop an oleophilic array of conical needle structures for the collection of micron-sized oil droplets, inspired by the collection of similar sized water droplets on conical cactus spines. Underwater, these structures mimic cacti and can capture micron-sized oil droplets and continuously transport them towards the base of the conical needles. Materials with this structure show obvious advantages in micron-sized oil collection with high continuity and high throughput.