Hierarchically superhydrophilic poly(vinylidene fluoride) membrane with self-cleaning fabricated by surface mineralization for stable separation of oily wastewater
文献类型：期刊论文
| 作者 | Qu, Fangshu; Cao, Akun; Yang, Yang; Mahmud, Sakil; Su, Peiyang; Yang, Jingxin; He, Zijun; Lai, Qiaoyun; Zhu, Lijing; Tu, Zhipeng |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 640 |
| 关键词 | PVDF MEMBRANES BETA-FEOOH RESISTANCE NANORODS TIO2 |
| 英文摘要 | Long-term separation of highly emulsified oily wastewater is still challenging in advanced membrane technologies. Herein, 8-FeOOH nanorods were in-situ inlaid on a hierarchically superhydrophilic poly(vinylidene fluoride) (PVDF) ultrafiltration membrane surface via a facile biomimetic mineralization process. The 8-FeOOHdecorated hierarchical PVDF membrane surface with the organic-inorganic hybrids showed excellent hydrophilicity and ultralow underwater oil adhesion force. After in-situ anchoring of 8-FeOOH nanorods, the polydopamine/polyethylenimine (PDA/PEI) modified hierarchical PVDF membrane showed improved permeation flux behaviors, higher oil removal, demulsification, and better anti-oil-fouling properties during 1440-min continuous separation of stabilized soybean oil-in-water (o/w) and crude o/w emulsions. In contrast, the unmodified hierarchically superhydrophilic PVDF membrane maintained efficient emulsion separation for a much shorter period (120 min). Most importantly, the surface-immobilized 8-FeOOH exhibited excellent photocatalytic activity for cleaning the oil foulants (soybean oil and crude oil) through the photo-Fenton reaction in the presence of peroxide, endowing the membrane with self-cleaning capability. As a result, the unwanted foulants were successfully removed from the membrane surface, restoring separation performance of the super hydrophilic PVDF membrane for reuse. Therefore, the self-cleaning membrane can treat more oily wastewater and produce more clean water before replacement. The mineralized superhydrophilic PVDF membrane with hierarchical composite micro-/nano structures exhibits satisfactory stability under simultaneous separation and photocatalysis cleaning, showing great potential for tricky oily wastewater treatment and oil resource recovery. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21256]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | Xiong, Z (corresponding author), Guangzhou Univ, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Qu, Fangshu,Cao, Akun,Yang, Yang,et al. Hierarchically superhydrophilic poly(vinylidene fluoride) membrane with self-cleaning fabricated by surface mineralization for stable separation of oily wastewater[J]. JOURNAL OF MEMBRANE SCIENCE,2021,640. |
| APA | Qu, Fangshu.,Cao, Akun.,Yang, Yang.,Mahmud, Sakil.,Su, Peiyang.,...&Zhao, Shuaifei.(2021).Hierarchically superhydrophilic poly(vinylidene fluoride) membrane with self-cleaning fabricated by surface mineralization for stable separation of oily wastewater.JOURNAL OF MEMBRANE SCIENCE,640. |
| MLA | Qu, Fangshu,et al."Hierarchically superhydrophilic poly(vinylidene fluoride) membrane with self-cleaning fabricated by surface mineralization for stable separation of oily wastewater".JOURNAL OF MEMBRANE SCIENCE 640(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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