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標題: | 原子沉積層技術輔助水熱法合成奈米氧化鋅膜於油水分離之研究 Nanostructured ZnO Oil-water Separation Membranes Enabled by Atomic-layer-deposition Assisted Hydrothermal Approach |
作者: | Chia-Chi Kan 甘家齊 |
指導教授: | 童國倫(Kuo-Lun Tung) |
關鍵字: | 油水分離,氧化鋅,奈米結構,原子層沉積技術,低溫水熱法, Oil-in-water separation,atomic layer deposition,ZnO nanostructures, |
出版年 : | 2019 |
學位: | 碩士 |
摘要: | 由於工業的快速發展,油污染議題成為世界性的挑戰,而其中含油廢水處理則為淨化過程中不可或缺的重要程序,油水分離應用領域因而逐漸受到各界重視。在此研究中,我們建立了由各種形態氧化鋅奈米結構覆蓋的超潤濕銅網膜,該氧化鋅奈米結構膜具有超親水/水下超疏油的特殊潤濕性,並可成功運用於重力驅動油水分離。本研究以銅網為基材模片,透過原子層沉積層技術輔助覆蓋均勻的氧化鋅晶種層,接著以低溫水熱法生長三種相異氧化鋅奈米結構:一維奈米線(NWs),奈米棒(NRs)和二維奈米片(NSs),建構出具有水下超疏油潤濕性的油水分離膜,並對其分離性能和表面性質進行了全面的分析及測試,探討不同氧化鋅奈米結構對油水分離模的分離效能及穩定性的影響。本研究發現具有氧化鋅一維奈米線結構的油水分離膜,相較於其他奈米棒和二維奈米片結構膜,最易於製備,且在重力驅動油水分離測試中,具有高分離效能(> 99.7%)和高通量(4.0×105Lm-2h-1)。結果證實此氧化鋅奈米線油水分離薄膜兼有經濟效益高和環保節能的優點,在油水分離應用領域中深具發展價值。 Due to the rapid industrial growth, oil contamination has become a challenging issue across the world. Oily wastewater treatment is currently an inevitable challenge to manage the clean water problem. Here, we built superwetting copper mesh membranes covered by ZnO nanostructures of various morphologies for gravity-driven oil/water separation. The effect of ZnO nanostructure morphology on performance of oil/water separation is discussed in this study. The membranes with underwater superoleophobicity were successfully prepared via atomic layer deposition followed by a low-temperature hydrothermal process. Three ZnO nanostructures with different morphologies: one-dimensional ZnO nanowires (NWs), nanorods (NRs) and two-dimensional nanosheets (NSs) were successfully fabricated on the membranes, and their separation performance as well as surface properties were fully analyzed by a number of techniques. Among all these membranes, the membranes with ZnO NWs were found to exhibited full potential with a facile synthesis method, great separation efficiency (> 99.7 %) and high flux (4.0×105 Lm−2h−1). This work confirmed that ZnO NW membrane is a cost-effective and green approach for practical oil/water separation applications, and provides a simple on-demand solution for oily wastewater treatment. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/71619 |
DOI: | 10.6342/NTU201900151 |
全文授權: | 有償授權 |
顯示於系所單位: | 化學工程學系 |
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