期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 18, 期 2, 页码 1317-1325出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp06305a
关键词
-
资金
- National Natural Science Foundation of China [51272246, 11304173]
- Scientific and Technological Research Foundation of Anhui Province, China [12010202035]
The issue of oil/water separation has recently become a global concern due to the frequency of oil spills and the increase in industrial waste water. Thus, membrane-based materials with unique wettability are desired to separate both of these from a mixture. Nevertheless, the fabrication of energy efficient and stable membranes appropriate for the separation process remains challenging. Herein, synergistic superhydrophilic-underwater superoleophobic inorganic membranes were inventively created by a maneuverable galvanic displacement reaction on copper mesh. The water-loving meshes were then used to study gravity driven oil-water separation, where a separation efficiency (the ratio of the amount of oil remaining above the membrane after the separation process to the amount of oil in original mixture) of up to 97% was achieved for various oil-water mixtures, and furthermore the wetting properties and separating performances were maintained without further attenuation after exposure to corrosive environments. Notably, the repelling-oil mode can switch to a superhydrophobic mode which acts as a supplementary oil slick absorbing material floating above the water surface and has potential in tackling oil slick clean-up issues, in comparison to the former mode which possesses better separation ability. In addition, the original repelling-oil state can be reinstated with ease. The novel method involving a one-cyclic transformation course abandons extra chemical addition. The facile and green route presented here acts as an excellent test for the fabrication of a dual-functioning membrane with potential use in efficient oil-water separation, even in harsh environments, and off-shore oil spill cleanup.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据