Fabrication and characterization of electrospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Fabrication and characterization of electrospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation
	Hou, Deyin; Lin, Dichu; Ding, Chunli; Wang, Dewu; Wang, Jun
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2017-12-22
卷号	189 期号:0 页码:82-89
关键词	Membrane Distillation Electrospinning Pvdf-hfp Silica Nanoparticles Superhythophobic Hybrid Membrane
英文摘要	The poly(vinylidene fluoride-co-hexafluropropylene) (PVDF-HFP)/Silica nanoparticles (SiNPs) flat-sheet hybrid membranes were fabricated for membrane distillation via electrospinning, and the effects of SiNPs on the resultant membranes properties were investigated. The electrospun nanofibers membranes presented a three-dimension interconnected open morphology. Although the SiNPs had no significant effect on the crystalline form of the PVDF-HFP polymer in the hybrid membranes, the membrane surface became rougher and exhibited a hierarchical stratum structure due to overlapping nanofibers and the presence of beads-on-string with the SiNPs addition, which made the superhydrophobic membrane surface formation. The SiNPs addition declined membrane porosity, while enlarge pore diameter and increased membrane thickness. However, the liquid entry pressure of water of the hybrid membrane was not significantly influenced by the SiNPs addition. The electrospun membranes were tested through direct contact membrane distillation using 35 g/L NaCl solution as feed, and the highest permeate flux bout 48.6 kg/m(2) h was obtained and the salt rejection maintained 99.99%. The 240 h continuous desalination application demonstrated the stable permeability of the electrospun hybrid membrane, and the membrane hydrophobicity can also maintained well with long-time immersion in salt solution. The results indicated the potential of the electospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation application.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39697]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Hou, Deyin,Lin, Dichu,Ding, Chunli,et al. Fabrication and characterization of electrospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,189(0):82-89.
APA	Hou, Deyin,Lin, Dichu,Ding, Chunli,Wang, Dewu,&Wang, Jun.(2017).Fabrication and characterization of electrospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation.SEPARATION AND PURIFICATION TECHNOLOGY,189(0),82-89.
MLA	Hou, Deyin,et al."Fabrication and characterization of electrospun superhydrophobic PVDF-HFP/SiNPs hybrid membrane for membrane distillation".SEPARATION AND PURIFICATION TECHNOLOGY 189.0(2017):82-89.