Tseng Chuan Ming, Chen Hsin Liang, Lai Sz Nian, Chen Ming Shiung, Peng Chien Jung, Li Chia Jui, Hung Wei Hsuan
Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, Taiwan.
Department of Materials Science and Engineering, Feng Chia University, Taichung, 407, Taiwan.
Nanoscale Res Lett. 2017 Dec;12(1):362. doi: 10.1186/s11671-017-2124-7. Epub 2017 May 19.
"Carbon-based material" has demonstrated a great potential on water purification due to its strong physical adsorption to organic pollutants in the water. Three-dimensional cubic ordered mesoporous carbon (CMK-8), one of the well-known ordered mesoporous carbons, was prepared by using nanocasting method with mesoporous silica (KIT-6) as the template. In this study, CMK-8 blended with Nafion polymer to form a free-standing mesoporous CMK-8-Nafion composite membrane. The synthesis of high crystallinity CMK-8 was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). More than 80% methyl orange (MO) removal efficiency was observed under 254-nm UV irradiation after 120 min. Ninety-two percent recycling performance was remained after four recycling tests, which indicated a reliable servicing lifetime for the water purification. Furthermore, an additional layer of plasmonic silver nanoparticles (Ag NPs) was integrated into this CMK-8-Nafion membrane for higher pollutant removal efficiency, attributing from the generation of plasmon-resonance hot electrons from Ag NPs. A 4-in. CMK-8-Nafion composite membrane was also fabricated for the demonstration of potential large-scale utilization.
“碳基材料”因其对水中有机污染物具有强大的物理吸附作用，在水净化方面展现出了巨大潜力。三维立方有序介孔碳（CMK - 8）是著名的有序介孔碳之一，它是以介孔二氧化硅（KIT - 6）为模板，通过纳米铸造法制备而成。在本研究中，CMK - 8与Nafion聚合物混合，形成了一种独立的介孔CMK - 8 - Nafion复合膜。通过X射线衍射（XRD）和透射电子显微镜（TEM）对高结晶度CMK - 8的合成进行了表征。在254纳米紫外线照射120分钟后，观察到甲基橙（MO）的去除效率超过80%。经过四次循环测试后，仍保留了92%的循环性能，这表明该水净化系统具有可靠的使用寿命。此外，在这种CMK - 8 - Nafion膜中集成了额外的一层等离子体银纳米颗粒（Ag NPs），以提高污染物去除效率，这归因于Ag NPs产生的等离子体共振热电子。还制备了一个4英寸的CMK - 8 - Nafion复合膜，以展示其潜在的大规模应用。
