Hierarchical rough surfaces formed by LBL self-assembly for oil-water separation
文献类型：期刊论文
| 作者 | Li, Xiaoyu1; Hu, Dan1,2; Huang, Kun1; Yang, Chuanfang1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2014-08-14 |
| 卷号 | 2期号:30页码:11830-11838 |
| 关键词 | MESOPOROUS SILICA NANOPARTICLES SUPERHYDROPHOBIC SURFACES PVDF MEMBRANES COATINGS FABRICATION MESH EMULSIONS EFFICIENCY SORBENT |
| ISSN号 | 2050-7488 |
| 其他题名 | J. Mater. Chem. A |
| 中文摘要 | Controlled assembly of nanoscale building units to form special micro-/nanostructures is of interest for achieving desired properties in many practical applications. The raspberry- or strawberry-like hierarchical structure with multi-level dimensions is one example of special surface wettability design. In this work, a series of coatings with hierarchical nanostructure and dual roughness are constructed on sintered stainless steel mesh and stainless steel fiber felt via layer-by-layer self-assembly of SiO2 nanoparticles having different sizes. The surface is then chemically treated to obtain the wetting properties needed for intended separation of oil from water. The surface morphology of the coatings is observed using scanning electron microscopy and atomic force microscopy. The surface wetting properties are investigated by measuring the coatings' water and oil contact angle in air and under water. The results show that the stainless steel mesh with such coatings has superhydrophobicity, and thus can efficiently separate regular oil water mixtures. Furthermore, the stainless steel fiber felt treated with similar coatings can also separate oil-in-water emulsions through the non-sieving coalescence mechanism, achieving an oil water separation efficiency as high as 99.4%. |
| 英文摘要 | Controlled assembly of nanoscale building units to form special micro-/nanostructures is of interest for achieving desired properties in many practical applications. The raspberry- or strawberry-like hierarchical structure with multi-level dimensions is one example of special surface wettability design. In this work, a series of coatings with hierarchical nanostructure and dual roughness are constructed on sintered stainless steel mesh and stainless steel fiber felt via layer-by-layer self-assembly of SiO2 nanoparticles having different sizes. The surface is then chemically treated to obtain the wetting properties needed for intended separation of oil from water. The surface morphology of the coatings is observed using scanning electron microscopy and atomic force microscopy. The surface wetting properties are investigated by measuring the coatings' water and oil contact angle in air and under water. The results show that the stainless steel mesh with such coatings has superhydrophobicity, and thus can efficiently separate regular oil water mixtures. Furthermore, the stainless steel fiber felt treated with similar coatings can also separate oil-in-water emulsions through the non-sieving coalescence mechanism, achieving an oil water separation efficiency as high as 99.4%. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Energy & Fuels ; Materials Science |
| 关键词[WOS] | MESOPOROUS SILICA NANOPARTICLES ; SUPERHYDROPHOBIC SURFACES ; PVDF MEMBRANES ; COATINGS ; FABRICATION ; MESH ; EMULSIONS ; EFFICIENCY ; SORBENT |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000339535100038 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/10930]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Being 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaoyu,Hu, Dan,Huang, Kun,et al. Hierarchical rough surfaces formed by LBL self-assembly for oil-water separation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(30):11830-11838. |
| APA | Li, Xiaoyu,Hu, Dan,Huang, Kun,&Yang, Chuanfang.(2014).Hierarchical rough surfaces formed by LBL self-assembly for oil-water separation.JOURNAL OF MATERIALS CHEMISTRY A,2(30),11830-11838. |
| MLA | Li, Xiaoyu,et al."Hierarchical rough surfaces formed by LBL self-assembly for oil-water separation".JOURNAL OF MATERIALS CHEMISTRY A 2.30(2014):11830-11838. |
入库方式： OAI收割
来源：过程工程研究所
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