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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 |
ISSN | 0376-7388 |
EISSN | 1873-3123 |
卷号 | 599 |
发表状态 | 已发表 |
DOI | 10.1016/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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