Silver Nanoparticles/N-Doped Carbon-Dots Nanocomposites Derived from Siraitia Grosvenorii and Its Logic Gate and Surface-Enhanced Raman Scattering Characteristics

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• 作者：Yubin Su ; Bingfang Shi ; Suqi Liao ; Jingjin Zhao ; Lini Chen ; Shulin Zhao
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：March 7, 2016
• 年：2016
• 卷：4
• 期：3
• 页码：1728-1735
• 全文大小：614K
• ISSN：2168-0485

文摘

Silver/carbon dots (CDs) nanocomposites receive significant attention for diverse applications owing to their unique physical and chemical properties. Herein, a green method is proposed for synthesizing silver nanoparticle/N-doped CDs (AgNPs/N-CDs) nanocomposites, wherein the AgNPs are grown on the surface of reduced N-CDs derived from Siraitia grosvenorii. The N-CDs were used as a reducing agent and stabilizer, no additional reducing agent and stabilizer were necessary. The as-synthesized AgNPs/N-CDs nanocomposites were characterized using ultraviolet–visible spectroscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). An AND logic system based on the obtained N-CDs was proposed, which avoids complicated modifications and chemical labeling. The surface-enhanced Raman scattering (SERS) properties of the prepared AgNPs/N-CDs nanocomposites were also investigated, indicating the potential application for SERS detection.