| LUO Wen,ZHU Hai-yan,YU Shi-ping,GUO Peng-ye,SHANG Zhen-zhen,CAI Ming-juan,YAN Zi-yao,ZHONG Wen,YU Xin-quan,ZHANG You-fa.Fabrication and Emulsified Oil/Water Separation Properties of Superwettable Stainless Steel Fiber Felts[J],47(1):1-7 |
| Fabrication and Emulsified Oil/Water Separation Properties of Superwettable Stainless Steel Fiber Felts |
| Received:April 11, 2017 Revised:January 20, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.01.001 |
| KeyWord:stainless steel fiber felts superhydrophilic/underwater superoleophobic emulsified oil separation |
| Author | Institution |
| LUO Wen |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| ZHU Hai-yan |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| YU Shi-ping |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| GUO Peng-ye |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| SHANG Zhen-zhen |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| CAI Ming-juan |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| YAN Zi-yao |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| ZHONG Wen |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| YU Xin-quan |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
| ZHANG You-fa |
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing , China |
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| Abstract: |
| The work aims to reduce pore size and increase stain resistance of the fiber felts by building superwetting micro-nanostructure on surface of stainless steel fiber felts, so as to achieve efficient separation of emulsified oil. Micron-sized copper particles were deposited on the surface of stainless steel fiber felts in the method of double-anodic electrochemical deposition. Then copper particles were oxidized into Cu(OH)2 nanoneedles with micro-nano structures in the method of electrochemical oxidation. Microstructure, chemical composition, wettability, oil-water separation property of the sample were characterized with scanning electron microscopy, X-ray diffractometer, contact angle meter, oil-water separation test and UV-visible spectrophotometer. After fabrication of micro-nanostructures, wettability of the stainless steel fiber felt transformed into superhydrophilicity (≈0°) and underwater superoleophobicity (161°) from hydrophobicity (135°). Separation efficiency of oil-in-water emulsion could reach up to 99%, even after 8 times of cycling separations. The UV-vis light transmittance could reach over 98% after seperation. Oil droplets in the oil-in-water can be effectively removed. Porous micro-nano composite structures can be successfully constructed on the surface of stainless steel fiber felts in the method of electrodeposition-electrochemical oxidation, and the surface exhibits excellent superhydrophilic/underwater superoleophobic property, which can separate the oil-in-water emulsified oil effectively. After repeated separation, the separation efficiency does not reduce significantly, which proves its excellent stain resistance. |
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