Investigation of Free-Standing Plasmonic Mesoporous Ag-CMK-8-Nafion Composite Membrane for the Removal of Organic Pollutants with 254-nm UV IrradiationReportar como inadecuado




Investigation of Free-Standing Plasmonic Mesoporous Ag-CMK-8-Nafion Composite Membrane for the Removal of Organic Pollutants with 254-nm UV Irradiation - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Nanoscale Research Letters

, 12:362

First Online: 19 May 2017Received: 07 February 2017Accepted: 02 May 2017DOI: 10.1186-s11671-017-2124-7

Cite this article as: Tseng, C.M., Chen, H.L., Lai, S.N. et al. Nanoscale Res Lett 2017 12: 362. doi:10.1186-s11671-017-2124-7

Abstract

-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.





Autor: Chuan Ming Tseng - Hsin Liang Chen - Sz Nian Lai - Ming Shiung Chen - Chien Jung Peng - Chia Jui Li - Wei Hsuan Hung

Fuente: https://link.springer.com/



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