Weak-reduction graphene oxide membrane for improving water purification performance
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第4期
论文作者：Hao Yu Yi He Guoqing Xiao Yi Fan Jing Ma Yixuan Gao Ruitong Hou Jingyu Chen
文章页码：106 - 112
摘 要：Two-dimensional（2 D） materials are promising candidates for advanced water purification membranes.In this work, UV reduced GO（Ur GO） membranes on the support of polyvinylidene fluoride（PVDF） had been fabricated for wastewater treatment. The reduction degree of GO membrane on the effect of water purification performance was investigated, and it was found that the weak-reduction GO membrane exhibited the optimal performance of removing pollutant from wastewater than GO membrane. Besides,scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectra and contact angle tests were used to characterize the physical and chemical properties of the Ur GO membranes, and the permeance and rejection ability of the as-prepared filtration membranes were determined. Due to the weak-reduction of GO, pristine graphitic sp2 domains increased with slightly decreasing D-spacing. Thus,the Ur GO membrane showed a higher water flux of 38.27 L m-2h-1 bar-1, which was improved more than 270% compared to GO membrane, and dyes rejection increased. Those outstanding performances indicated that the Ur GO membrane could effectively regulate the contradiction of the trade-off balance between flux and rejection, and hold great potential in real-world waste-water purification.
Hao Yu1,2，Yi He1,2，Guoqing Xiao2，Yi Fan1,3，Jing Ma1,2，Yixuan Gao1,2，Ruitong Hou1,2，Jingyu Chen4
1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University2. College of Chemistry and Chemical Engineering, Southwest Petroleum University4. Deakin University, Institute for Frontier Materials
摘 要：Two-dimensional（2 D） materials are promising candidates for advanced water purification membranes.In this work, UV reduced GO（Ur GO） membranes on the support of polyvinylidene fluoride（PVDF） had been fabricated for wastewater treatment. The reduction degree of GO membrane on the effect of water purification performance was investigated, and it was found that the weak-reduction GO membrane exhibited the optimal performance of removing pollutant from wastewater than GO membrane. Besides,scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectra and contact angle tests were used to characterize the physical and chemical properties of the Ur GO membranes, and the permeance and rejection ability of the as-prepared filtration membranes were determined. Due to the weak-reduction of GO, pristine graphitic sp2 domains increased with slightly decreasing D-spacing. Thus,the Ur GO membrane showed a higher water flux of 38.27 L m-2h-1 bar-1, which was improved more than 270% compared to GO membrane, and dyes rejection increased. Those outstanding performances indicated that the Ur GO membrane could effectively regulate the contradiction of the trade-off balance between flux and rejection, and hold great potential in real-world waste-water purification.
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