A novel reusable superhydrophilic NiO/Ni mesh produced by a facile fabrication method for superior oil/water separation
A novel reusable superhydrophilic NiO/Ni mesh produced by a facile fabrication method for superior oil/water separation
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DOI：
10.1039/c7ta01987d
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发表时间：
2017-06
影响因子：
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通讯作者：
Zhenwei Yu;F. Yun;Zhiyuan Gong;Q. Yao;S. Dou;Kesong Liu;Lei Jiang;Xiaolin Wang
中科院分区：
文献类型：
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作者：
Zhenwei Yu;F. Yun;Zhiyuan Gong;Q. Yao;S. Dou;Kesong Liu;Lei Jiang;Xiaolin Wang
迫切需要开发用于油水分离的耐用和可重复使用的材料，特别是在恶劣环境中。传统的基于防垢网的分离技术不能重复使用，并且受到耐温性差的限制。在这里，我们报告了一种新型的超亲水和水下超疏油NiO/Ni网，其在恶劣环境中显示出上级油/水分离，具有可重复使用和耐用的特性，可以分离不同的油-水混合物，以及不含沙子和土壤污染物，>99%的分离效率和高达5.4 × 104 L m−2 h−1的渗透通量。该材料能够在我们测量的20个循环中保持其上级性能，并且对于粘性油的混合物，其性能在快速热处理后很容易恢复。我们的分离方法完全是重力驱动的，因此预计将具有很高的能源效率。我们预计，我们的分离方法将有许多应用，包括清理石油泄漏，废水处理和其他恶劣条件下的油水分离。
There is a critical need to develop durable and reusable materials for oil–water separation, especially in harsh environments. Traditional anti-fouling mesh-based separation technologies are not reusable and limited by poor temperature resistance. Here we report a novel superhydrophilic and underwater superoleophobic NiO/Ni mesh which shows superior oil/water separation in harsh environments, with reusable and durable properties that can separate different oil–water mixtures with and without sand and soil contaminants, a >99% separation efficiency and up to 5.4 × 104 L m−2 h−1 permeate flux. The material is able to retain its superior performance over the 20 cycles we measured and for mixtures of sticky oils its performance is easily recoverable after a quick heat treatment. Our separation methodology is solely gravity-driven and consequently is expected to be highly energy-efficient. We anticipate that our separation methodology will have numerous applications, including in the clean-up of oil spills, wastewater treatment and other harsh condition oil–water separations.