Facile and Scalable Flow-Induced Deposition of Organosilica on Porous Polymer Supports for Reverse Osmosis Desalination
Facile and Scalable Flow-Induced Deposition of Organosilica on Porous Polymer Supports for Reverse Osmosis Desalination
复制标题
DOI：
10.1021/acsami.7b19075
复制
发表时间：
2018-04-25
影响因子：
9.5
通讯作者：
Tsuru, Toshinori
中科院分区：
文献类型：
--
作者：
Gong, Genghao;Nagasawa, Hiroki;Tsuru, Toshinori
通过一种简单的、技术上可扩展的流动诱导沉积（FD）方法，在多孔聚合物基底上制备了连续均匀的有机硅膜。通过这种两步FD方法，在具有大面积的聚合物表面上的有机二氧化硅分离层的厚度的均匀性得到显著改善。同时，对有机硅在膜制备中的最佳浓度也进行了研究。该聚合物支撑的有机二氧化硅层状杂化膜在3 MPa的操作压力下在2000 ppm NaCl溶液的反渗透脱盐中显示出高水平的NaCl截留率（97.5-99%）。当卷成11 mm的曲率半径时，该膜也表现出良好的稳定性和柔韧性。
The fabrication of a continuous and uniform organosilica membrane on a porous polymer substrate was achieved via a facile and technologically scalable flow-induced deposition (FD) approach. The uniformity of the thickness of an organosilica separation layer on a polymer surface with a large area was improved significantly via this two-step FD approach. Meanwhile, the optimal concentration of the organosilica used in membrane preparation was also investigated. This polymer-supported organosilica layered-hybrid membrane showed a high level of NaCl rejection (97.5-99%) in the reverse osmosis desalination of a 2000 ppm NaCl solution at an operating pressure of 3 MPa. This membrane also exhibited good stability and flexibility when rolled into a curvature radius of 11 mm.