摘要
借助N-(三甲氧基硅丙基)乙二胺三乙酸钠(EDTS)对氧化石墨烯(GO)进行功能化,制备了EDTS-GO纳米复合物;XRD结果表明,经EDTS功能化后,GO片层之间规则的累积被破坏,形成了不同片层朝向的无序结构,减弱了片层之间的聚集.通过相转化法制备了EDTS-GO和GO改性的聚偏氟乙烯(PVDF)超滤膜以及未改性的PVDF超滤膜,系统考察了EDTS-GO和GO对PVDF超滤膜孔隙率、表面亲水性等性能的影响.处理乳化含油废水的实验结果显示,EDTS-GO/PVDF膜通量及通量恢复率明显高于GO/PVDF膜和PVDF膜,这表明EDTS-GO改性的PVDF膜在处理乳化含油废水时,比GO改性的PVDF膜和纯PVDF膜具有更优异的性能.
The functionalization of graphene oxide（GO）with N-（trimethoxysilylpropyl）ethylenediamine triacetic acid trisodium salt（EDTS）afforded EDTS-GO nanocomposites.XRD results indicated that the regular stacking of GO lamellae was destroyed and a disordered structure in which the lamellae possess different orientations was formed,which weakens the aggregation between lamellae.EDTS-GO and GOmodified polyvinylidene fluoride（PVDF）membranes,and unmodified PVDF membranes were prepared by the phase inversion method and the effects of EDTS-GO and GO on the porosity,surface hydrophilicity and other properties of the PVDF ultrafiltration membranes were systematically investigated.The experimental results for the treatment of emulsified oily wastewater showed that the permeation and flux recovery ratio of the EDTS-GO/PVDF membrane are significantly higher than those of the GO/PVDF membrane and the PVDF membrane,which demonstrates that the EDTS-GO modified PVDF membrane possesses better performance than either GO-modified PVDF membranes or pure PVDF membranes in the filtration of emulsified oily wastewater.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2017年第5期28-35,共8页
Membrane Science and Technology
基金
国家自然科学基金项目(51478379)
化学工程联合国家重点实验室开放基金(SKL-chE-16A04)
陕西省教育厅专项科研计划项目(16JK1755)
关键词
超滤膜
乳化含油废水
氧化石墨烯
ultrafiltration membrane
emulsified oily wastewater
graphene oxide
