Nano Development Team, Bioneer Corporation, Daejeon 306-220, Republic of Korea.
Nano Development Team, Bioneer Corporation, Daejeon 306-220, Republic of Korea.
J Environ Sci (China). 2016 Apr;42:275-283. doi: 10.1016/j.jes.2014.11.017. Epub 2015 Dec 1.
We have developed a new nanofilter using a carbon nanotube-silver composite material that is capable of efficiently removing waterborne viruses and bacteria. The nanofilter was subjected to plasma surface treatment to enhance its flow rate, which was improved by approximately 62%. Nanoscale pores were obtained by fabricating a carbon nanotube network and using nanoparticle fixation technology for the removal of viruses. The pore size of the nanofilter was approximately 38 nm and the measured flow rate ranged from 21.0 to 97.2L/(min·m(2)) under a pressure of 1-6 kgf/cm(2) when the amount of loaded carbon nanotube-silver composite was 1.0 mg/cm(2). The nanofilter was tested against Polio-, Noro-, and Coxsackie viruses using a sensitive real-time polymerase chain reaction assay to detect the presence of viral particles within the outflow. No trace of viruses was found to flow through the nanofilter with carbon nanotube-silver composite loaded above 0.8 mg/cm(2). Moreover, the surface of the filter has antibacterial properties to prevent bacterial clogging due to the presence of 20-nm silver nanoparticles, which were synthesized on the carbon nanotube surface.
我们开发了一种使用碳纳米管-银复合材料的新型纳米滤器，能够有效地去除水中的病毒和细菌。该纳米滤器经过等离子体表面处理，以提高其流速，流速提高了约 62%。通过制造碳纳米管网络并使用纳米颗粒固定技术来去除病毒，获得了纳米级孔。纳米滤器的孔径约为 38nm，在加载量为 1.0mg/cm(2)时，在 1-6kgf/cm(2)的压力下，测量的流速范围为 21.0 至 97.2L/（min·m(2)）。使用灵敏的实时聚合酶链反应检测法对该纳米滤器进行了针对脊髓灰质炎、诺如和柯萨奇病毒的测试，以检测出流出物中病毒颗粒的存在。当碳纳米管-银复合材料的负载量高于 0.8mg/cm(2)时，没有病毒痕迹被发现流过纳米滤器。此外，由于存在 20nm 的银纳米颗粒，过滤表面具有抗菌性能，可以防止细菌堵塞，这些银纳米颗粒是在碳纳米管表面合成的。
