期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 16, 期 1, 页码 1131-1142出版社
MDPI
DOI: 10.3390/ijms16011131
关键词
graphene; silver nanoparticles; plant extract; nanocomposites; surface enhance Raman scattering (SERS)
资金
- NSTIP Strategic technologies programs in the Kingdom of Saudi Arabia [11NAN1860-02]
A green, one-step approach for the preparation of graphene/Ag nanocomposites (PE-HRG-Ag) via simultaneous reduction of both graphene oxide (GRO) and silver ions using Pulicaria glutinosa plant extract (PE) as reducing agent is reported. The plant extract functionalizes the surfaces of highly reduced graphene oxide (HRG) which helps in conjugating the Ag NPs to HRG. Increasing amounts of Ag precursor enhanced the density of Ag nanoparticles (NPs) on HRG. The preparation of PE-HRG-Ag nanocomposite is monitored by using ultraviolet-visible (UV-Vis) spectroscopy, powder X-ray diffraction (XRD), and energy dispersive X-ray (EDX). The as-prepared PE-HRG-Ag nanocomposities display excellent surface-enhanced Raman scattering (SERS) activity, and significantly increased the intensities of the Raman signal of graphene.
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