Green, Biodegradable, Underwater Superoleophobic Wood Sheet for Efficient Oil/Water Separation
Green, Biodegradable, Underwater Superoleophobic Wood Sheet for Efficient Oil/Water Separation
复制标题
用于高效油/水分离的绿色、可生物降解、水下超疏油木板
DOI：
10.1021/acsomega.7b02064
复制
发表时间：
2018
期刊：
影响因子：
4.1
通讯作者：
Hou Xun
中科院分区：
文献类型：
--
作者：
Yong Jiale;Chen Feng;Huo Jinglan;Fang Yao;Yang Qing;Bian Hao;Li Wentao;Wei Yang;Dai Yanzhu;Hou Xun
超湿(水或油)材料已被用于油/水分离，以应对日益增长的含油工业污水排放和漏油事故。以前报道的用于油水分离的人工超湿材料价格昂贵，而且使用它们通常会造成二次污染，因此这些材料的实用和大规模使用受到限制。在这里，我们发现木板在水下表现出超强的憎油性，在水中的附着力很低，这是由于它具有很强的吸水能力。通过简单的机械钻孔过程，在木板表面形成了穿透微孔阵列。预湿多孔板对油水混合物具有很强的分离能力，分离效率较高。木材是一种低成本、绿色、天然的环保材料，因此，我们相信这种简单、低成本、高效、绿色的大规模油水分离路线在实际解决溢油和含油工业废水造成的污染问题方面具有巨大的潜力。
Superwettable (by water or oil) materials have been used in oil/water separation to cope with the growing oily industrial sewage discharge and oil spill accidents. The artificial superwetting materials for oil/water separation that have been previously reported are expensive, and using them usually causes secondary pollution, so practical, large-scale uses of those materials are limited. Here, we find that wood sheet shows underwater superoleophobicity and low oil adhesion in water, resulting from its strong capacity of absorbing water. A through-microhole array was created on the wood sheet surface by a simple mechanical drilling process. The prewetted porous sheet had great ability to separate the mixtures of water and oil with high separation efficiency. Wood is a low cost, green, and natural eco-friendly material; therefore, we believe that such a simple, low-cost, efficient, and green route of large-scale oil/water separation has great potential to practically solve the pollution problems caused by oil spill and oily industrial wastewater.