有序介孔碳负载纳米金属颗粒及其SERS性能研究

doi:10.11896/cldb.20090065

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Abstract To improve the performance of surface-enhanced Raman scattering (SERS), Ag and Au nanoparticles (NPs) were loaded on the surface of ordered mesoporous carbon (OMC) using an ultrasonic technique. The microstructure was characterized through TEM, SEM and XRD techniques. And R6G were used as probe molecules to evaluate the SERS performance of OMC/Ag@Au NPs composite. The pore size and surface area of OMC/Ag@Au NPs composite were 5.9 nm and 426.1 m²·g^-1, which exhibits great ability of enrichment for organic molecules. The detection limit of R6G is determined to be as low as 10^-8 mol/L. Furthermore, the RSD of the peak intensity at 613 cm^-1 is 3.7%, and it remained high SERS activity stored over 45 days under ambient condition. Through a simple and low-cost ultrasonic technique, we prepared OMC/Ag@Au NPs composite which exhibits high SERS activity, reproducibility and stability. The excellent SERS activity mainly stems from two distinct mechanisms, electromagnetic enhancement from surface plasmon resonance (SPR) of Ag NPs and Au NPs as well as chemical enhancement from absorption effect of OMC, indicating a great potential in detecting organic pollutants.

Key words： ordered mesoporous carbon surface-enhanced raman scattering silver nanoparticles gold nanoparticles

Published: 30 September 2021

CLC number:

D430

Fund:This work was financially supported by the National Natural Science Foundation of China (51878659), Youth Development Program of Military Medical Technology (19QNP111), the China National Key R & D Program (2018YFC1603702).

About author:: Sha Xue is pursuing her M.S. in Biomedical Enginee-ring at Tianjin University. She joined the group at Institute of Medical Support Technology, Academy of Military Sciences of Chinese PLA from December 2019, and is working on the fabrication and evaluation of functional materials for SERS substrates.

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	XUE Sha
	ZHAO Lei
	ZHAO Youquan
	XU Huimin
	DENG Cheng
	WANG Yin
	CAI Tianyu
	ZHU Mengfu

Cite this article:

XUE Sha,ZHAO Lei,ZHAO Youquan, et al. Fabrication and SERS Performance of Ordered Mesoporous Carbon-supported Metal Nanoparticles[J]. Materials Reports, 2021, 35(18): 18001-18006.

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http://www.mater-rep.com/EN/10.11896/cldb.20090065 OR http://www.mater-rep.com/EN/Y2021/V35/I18/18001

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