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Photothermal-Responsive Single-Walled Carbon Nanotube-Based Ultrathin Membranes for On/Off Switchable Separation of Oil-in-Water Nanoemulsions
ACS Nano ( IF 15.8 ) Pub Date : 2015-04-27 00:00:00 , DOI: 10.1021/nn5062854 Liang Hu , Shoujian Gao , Xianguang Ding , Dong Wang , Jiang Jiang , Jian Jin , Lei Jiang 1
ACS Nano ( IF 15.8 ) Pub Date : 2015-04-27 00:00:00 , DOI: 10.1021/nn5062854 Liang Hu , Shoujian Gao , Xianguang Ding , Dong Wang , Jiang Jiang , Jian Jin , Lei Jiang 1
Affiliation
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Oil-contaminated wastewater threatens our environment and health, especially that stabilized by surfactants. Conventional separation protocols become invalid for those surfactant-stabilized nanoemulsions due to their nanometer-sized droplets and extremely high stability. In this paper, photothermal-responsive ultrathin Au nanorods/poly(N-isopropylacrylamide-co-acrylamide) cohybrid single-walled carbon nanotube (SWCNT) nanoporous membranes are constructed. Such membranes are capable of separating oil-in-water nanoemulsions with a maximum flux up to 35 890 m2·h–1·bar–1 because they feature hydrophilicity, underwater oleophobicity, and nanometer pore sizes. It is remarkable that the permeation flux can be simply modulated by light illumination during the process of separation, due to the incorporation of thermal-responsive copolymers and Au nanorods. Meanwhile, it shows ultrahigh separation efficiency (>99.99%) and desired antifouling and recyclability properties. We anticipate that our ultrathin photothermal-responsive SWCNT-based membranes provide potential for the generation of point-of-use water treatment devices.
中文翻译：
基于光热响应的单壁碳纳米管的超薄膜，用于水包油纳米乳液的开/关切换分离。
受油污染的废水威胁着我们的环境和健康，尤其是通过表面活性剂稳定的环境和健康。对于那些表面活性剂稳定的纳米乳液，常规的分离方法由于其纳米级的液滴和极高的稳定性而变得无效。本文构建了光热响应性超薄金纳米棒/聚（N-异丙基丙烯酰胺-共丙烯酰胺）混合单壁碳纳米管（SWCNT）纳米多孔膜。这种膜能够分离最大水通量为35 890 m 2 ·h –1 ·bar –1的水包油纳米乳液因为它们具有亲水性，水下疏油性和纳米孔径。值得注意的是，由于引入了热响应性共聚物和金纳米棒，因此在分离过程中可以通过光照简单地调节渗透通量。同时，它显示出超高的分离效率（> 99.99％）和所需的防污和可回收性。我们期望我们的超薄光热响应性基于SWCNT的膜为使用点水处理设备的产生提供潜力。
更新日期：2015-04-27
中文翻译：
基于光热响应的单壁碳纳米管的超薄膜，用于水包油纳米乳液的开/关切换分离。
受油污染的废水威胁着我们的环境和健康，尤其是通过表面活性剂稳定的环境和健康。对于那些表面活性剂稳定的纳米乳液，常规的分离方法由于其纳米级的液滴和极高的稳定性而变得无效。本文构建了光热响应性超薄金纳米棒/聚（N-异丙基丙烯酰胺-共丙烯酰胺）混合单壁碳纳米管（SWCNT）纳米多孔膜。这种膜能够分离最大水通量为35 890 m 2 ·h –1 ·bar –1的水包油纳米乳液因为它们具有亲水性，水下疏油性和纳米孔径。值得注意的是，由于引入了热响应性共聚物和金纳米棒，因此在分离过程中可以通过光照简单地调节渗透通量。同时，它显示出超高的分离效率（> 99.99％）和所需的防污和可回收性。我们期望我们的超薄光热响应性基于SWCNT的膜为使用点水处理设备的产生提供潜力。
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