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

Nanoscale Research Letters
Chuan Ming TsengWei Hsuan Hung

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.

References

Nov 27, 2002·Water Research·Brian BoltoKathryn Linge
May 23, 2006·Analytical and Bioanalytical Chemistry·Charles S Wong
Jul 14, 2006·Journal of Colloid and Interface Science·Guangming LiuFang Jiang
Jan 15, 2008·Journal of the American Chemical Society·Koichi AwazuToshiya Watanabe
Aug 25, 2012·Nano Letters·Joun LeeMartin Moskovits
Dec 1, 2012·Nano Letters·Shaunak MukherjeeNaomi J Halas
Sep 24, 2016·Nano Letters·Yuriy ZakharkoJana Zaumseil

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Citations

Mar 4, 2018·Nanoscale Research Letters·Abulajiang RehemanAbulikemu Abulizi

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Methods Mentioned

BETA
X-ray

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