使用天然和水热处理云母纳米颗粒制造高亲水性过滤器，用于高效废油水分离。
Fabrication of highly hydrophilic filter using natural and hydrothermally treated mica nanoparticles for efficient waste oil-water separation.
机构信息
National Institute of Fundamental Studies, Hantana Road, CP 20000, Kandy, Sri Lanka.
National Institute of Fundamental Studies, Hantana Road, CP 20000, Kandy, Sri Lanka.
出版信息
J Environ Manage. 2017 Apr 15;191:96-104. doi: 10.1016/j.jenvman.2017.01.002. Epub 2017 Jan 12.
For the effective oil/water separation, a novel superhydrophilic (underwater superoleophobic) filter is fabricated with the naturally and hydrothermally treated mica particles. To fabricate a double layered filter, hydrothermally treated mica particles were initially electrodeposited on a stainless steel mesh and a natural mica particles were sprayed on the first hydrothermally deposited mica layer. The double layered mica coated membrane showed superamphiphilic and superhydrophilic/superoleophobic (contact angle >159°) characteristics in air and underwater respectively. The membrane can separate range of oil-water mixtures with oil/water separation efficiency over ∼99%. Properties of double layered mica membrane were investigated and noted that the surface adhesion properties of mica is enhanced by the hydrothermal treatment of mica and the higher roughness of the mica layer is maintained by the natural mica.
为了实现有效的油水分离，我们采用经过自然处理和水热处理的云母颗粒制备了一种新型超亲水（水下超疏油）过滤器。为了制备双层过滤器，首先将水热处理的云母颗粒电沉积在不锈钢网上，然后将天然云母颗粒喷涂在第一层水热沉积云母层上。双层云母涂层膜在空气中和水下分别表现出超双亲性和超亲水/超疏油性（接触角＞159°）的特性。该膜可以分离多种油-水混合物，油/水分离效率超过约 99%。我们对双层云母膜的性能进行了研究，并注意到云母的水热处理可以增强云母的表面粘附性能，并且天然云母可以保持云母层的更高粗糙度。
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