期刊
JOURNAL OF MEMBRANE SCIENCE
卷 526, 期 -, 页码 437-449出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2016.12.061
关键词
Pervaporation; Graphene; Functionalized graphene oxide; Polymers of intrinsic microporosity; PIM-1; Mixed matrix membranes
资金
- EPSRC [EP/K016946/1]
- School of Chemical Engineering and Analytical Science - The University of Manchester
- EPSRC [EP/K005014/1, EP/K016946/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K016946/1, 1353926] Funding Source: researchfish
Organophilic mixed matrix membranes (MMMs) have been fabricated with the polymer of intrinsic micro porosity PIM-1 and grapheneoxide (GO) derivatives for the recovery of 1-butanol and ethanol from aqueous solutions via pervaporation (PV). Graphene oxide (GO) has been synthesized in solution through a modified Hummers' method, functionalized with alkylamines, and further reduced. The use of two alkylamines with chains of different lengths, octylamine (OA) and octadecylamine (ODA) 8 and 18 carbons, respectively - has been evaluated and the functionalized GO materials have been used as fillers in MMMs. The membranes have been prepared by casting-solvent evaporation of PIM-1/GO derivative solutions at room temperature, and a range of characterization techniques have been used to interpret their structure and relate it to their separation performance. Electron microscopy has been carried out to determine the morphology of the membranes and the dispersion of the functionalized GO flakes in the polymer matrix. Moreover, the membranes have been characterized by Fourier transform infrared spectroscopy(FT-IR), thermogravimetric analysis (TGA), and contact angle. Separation of alcohol from two binary mixtures composed of ethanol (EtOH)/water and butanol (BtOH)/water, containing 5 wt% of alcohol, have been performed. Under these conditions, the incorporation of graphene-like fillers at relatively low concentrations shows an increase in average separation factor for butanol Ontowrizo) from 13.5 for pure PIM-1 membranes to, in some cases, more than double for the MMMs; with the addition of 0.1 wt% of reduced amine-functionalized GO ktowrizo reaches 32.9 and 26.9 for the short-chain (OA) and the long-chain (ODA) alkylamines, respectively.
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