Abstract
With the possibility of large-area processing, the ZIF-8-coated mesh membranes with rough micro-/nanostructures and underwater superoleophobic properties were successfully fabricated at ambient temperature and pressure. These membranes exhibited excellent separation efficiency over 99.99% for various oil-water mixtures with the residual oil content in the collected water less than 4 ppm, and high water flux of 10.2×104 L m−2 h−1. Furthermore, the ZIF-8-coated mesh membrane displayed outstanding stability towards high temperature and various organic solvents immersion. More importantly, based on its facile fabrication method, this kind of ZIF-8-coated mesh membrane can be easily enlarged, which is critical for the practical oil-water separation applications.
摘要
在常温常压条件下, 以金属网为载体, 成功地制备出表面具有微纳结构的ZIF-8分离膜, 该膜显示出优异的水下超疏油性能. 该方法制备的ZIF-8分离膜, 可以高效地分离多种油水混合物, 油水分离效率高达99.99%, 同时具有较高的水通量10.2×104 L m−2 h−1, 以及耐压性. 进一步, 通过高温处理以及多种常见有机溶剂浸泡, 该膜仍然可以保持高效的油水分离性能, 并且可以循环使用. 由于制备方法简单, 该类ZIF-8油水分离膜可以实现大面积制备, 这对于油水分离的实际应用至关重要.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (21571076, 21390394, 21571079 and 61701543), “111” project (B07016), the Ministry of Science and Technology of SINOPEC (A381) and Open Projects of State Key Laboratory of Safety and Control for Chemicals (SKL-038). Song M, Zhao Y, and Xue M are inventors of a Chinese patent (CN201810148543.6).
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Mingqiu Song is currently doing her research at the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, under the supervision of Prof. Shilun Qiu and Prof. Ming Xue. Her research interests mainly focus on the synthesis and design of MOF membranes and their applications.
Yuxin Zhao obtained his BSc degree in chemistry of materials at China University of Petroleum (East) in 2009. He obtained his PhD degree in chemical engineering and technology at China University of Petroleum (East) (2009–2014) in Prof. Zifeng Yan’s group, with Best Undergraduate Thesis Award. In July 2015, Zhao joined SINOPEC Research Institute of Safety Engineering to start his independent academic career. His research interests are in the synthesis of new classes of materials and nanostructures, with an emphasis on their functionality.
Ming Xue received BSc (2003) and PhD (2008) degree from Jilin University (China) in Prof. Shilun Qiu’s group. He joined the University of Texas at San Antonio (USA) during 2007–2008 and 2014–2015 in Prof. Banglin Chen’s group. Currently, he works in State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University. His group focuses on the design and synthesis of multifunctional MOF materials and membranes for the applications in adsorption, separation and other advanced applications.
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A stable ZIF-8-coated mesh membrane with micro-/nano architectures produced by a facile fabrication method for high-efficiency oil-water separation
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Song, M., Zhao, Y., Mu, S. et al. A stable ZIF-8-coated mesh membrane with micro-/nano architectures produced by a facile fabrication method for high-efficiency oil-water separation. Sci. China Mater. 62, 536–544 (2019). https://doi.org/10.1007/s40843-018-9345-3
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DOI: https://doi.org/10.1007/s40843-018-9345-3