Fabrication of ceramic nanofiltration membrane via molecular layer deposition and subsequent calcination
Ceramic nanofiltration membranes are of particular significance since they possess excellent mechanical strength and chemical properties compared to polymer nanofiltration ones which could endure harsh environment.Molecular Layer Deposition (MLD), which enables monomolecular scale film growth, is one of the most promising technique for the fabrication of tailored organic or metalcone thin films.In the present work, MLD is used for the first time to deposit an ultrathin dense layer of titanicone on the surface of the tubular ceramic membranes.With a subsequent calcination process, a microporous TiO2 layer is formed after the removing of organic components correspondingly.Unlike the dense metal oxide layer formed through atomic layer deposition (ALD) method, the generated microporous TiO2 layer, as a substantive separation layer, has a pore size of~l.3 nm.And the molecular weight cut off of the ceramic membrane reaches ~680 Da with a pure water flux of~30 L-m-2·h-1·bar-1 ultimately.Therefore, ceramic nanofiltration membrane has been fabricated successfully through the MLD and calcination method.
ceramic membranes nanofiltration molecular layer deposition calcination
He Chen Yong Wang
Nanjing Tech University, Nanjing 210009
国内会议
江西上饶
英文
12-17
2016-08-01（万方平台首次上网日期，不代表论文的发表时间）