Unprecedented scaling/fouling resistance of omniphobic polyvinylidene fluoride membrane with silica nanoparticle coated micropillars in direct contact membrane distillation
Xiao, Zechun1,2; Guo, Hong1; He, Hailong3; Liu, Yongjie1,3; Li, Xuemei1; Zhang, Yuebiao3; Yin, Huabing4; Volkov, Alexey V.5; He, Tao1
2020-04-01
发表期刊JOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
EISSN1873-3123
卷号599
发表状态已发表
DOI10.1016/j.memsci.2020.117819
摘要

Recent development of omniphobic membranes shows promise in scaling/fouling mitigation in membrane distillation (MD), however, the fundamental understanding is still under dispute. In this paper, we report a novel omniphobic micropillared membrane coated by silica nanoparticles (SiNPs) (SiNPs-MP-PVDF) with dual-scale roughness prepared by a micromolding phase separation (mu PS) and electrostatic attraction. This membrane was used as a model for analysis of scaling behavior by calcium sulfate (CaSO4) scaling and fouling behavior by protein casein in comparison with commercial (C-PVDF) and micropillared (MP-PVDF) membranes. Unprecedented scaling/fouling resistance to CaSO4 and casein was observed in direct contact membrane distillation (DCMD) for SiNPs-MP-PVDF membrane. Similar scaling and fouling occurred for commercial PVDF and micropillared PVDF membranes. The observation corresponds well to the wetting state of all membranes as SiNPs-MP-PVDF shows suspended wetting, but MP-PVDF shows pinned wetting. From a hydrodynamic view, the suspended wetting attributes a slippery surface which reduces the direct contact of foulants to solid membrane part and leads to significantly reduced fouling and scaling. However, a pinned (or metastable) wetting state leads to a stagnant interfacial layer that is prone to severe fouling and scaling. This work highlights that both scaling and fouling resistance are indeed of suspended wetting state and slippage origin.

关键词Omniphobic Dual-scale roughness Membrane distillation Anti-fouling mechanism Slippery
收录类别SCI ; SCIE ; EI
语种英语
资助项目[IPN/7864] ; Russian Foundation for Basic Research[18-58-80031] ; [116020] ; National Natural Science Foundation of China[21676290]
WOS研究方向Engineering ; Polymer Science
WOS类目Engineering, Chemical ; Polymer Science
WOS记录号WOS:000513180500015
出版者ELSEVIER
EI入藏号20200308043325
EI主题词Calcium compounds ; Casein ; Distillation ; Fluorine compounds ; Fouling ; Nanoparticles ; Phase separation ; Silica ; Silica nanoparticles ; Sulfur compounds ; Wetting
EI分类号Nanotechnology:761 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Solid State Physics:933 ; Materials Science:951
WOS关键词SUPERHYDROPHOBIC PVDF MEMBRANES ; HUMAN WATER SECURITY ; SURFACE MODIFICATION ; SCALING MITIGATION ; WASTE-WATER ; FOULING MITIGATION ; DESALINATION ; ENERGY ; BEHAVIOR ; FUTURE
原始文献类型Journal article (JA)
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/105394
专题物质科学与技术学院_硕士生
物质科学与技术学院_PI研究组_章跃标组
通讯作者Li, Xuemei; He, Tao
作者单位1.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
4.Univ Glasgow, Sch Engn, Glasgow G12 8LT, Lanark, Scotland
5.RAS, Topchiev Inst Petrochem Synth, Leninsky Pr 29, Moscow 119991, Russia
推荐引用方式
GB/T 7714
Xiao, Zechun,Guo, Hong,He, Hailong,et al. Unprecedented scaling/fouling resistance of omniphobic polyvinylidene fluoride membrane with silica nanoparticle coated micropillars in direct contact membrane distillation[J]. JOURNAL OF MEMBRANE SCIENCE,2020,599.
APA Xiao, Zechun.,Guo, Hong.,He, Hailong.,Liu, Yongjie.,Li, Xuemei.,...&He, Tao.(2020).Unprecedented scaling/fouling resistance of omniphobic polyvinylidene fluoride membrane with silica nanoparticle coated micropillars in direct contact membrane distillation.JOURNAL OF MEMBRANE SCIENCE,599.
MLA Xiao, Zechun,et al."Unprecedented scaling/fouling resistance of omniphobic polyvinylidene fluoride membrane with silica nanoparticle coated micropillars in direct contact membrane distillation".JOURNAL OF MEMBRANE SCIENCE 599(2020).
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