粘毛旋覆花提取物：一种用于合成高度还原氧化石墨烯-银纳米复合材料的工具盒。

Pulicaria glutinosa extract: a toolbox to synthesize highly reduced graphene oxide-silver nanocomposites.

作者信息

Al-Marri Abdulhadi H, Khan Mujeeb, Khan Merajuddin, Adil Syed F, Al-Warthan Abdulrahman, Alkhathlan Hamad Z, Tremel Wolfgang, Labis Joselito P, Siddiqui Mohammed Rafiq H, Tahir Muhammad N

机构信息

Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.

Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Mainz 55122, Germany.

出版信息

Int J Mol Sci. 2015 Jan 5;16(1):1131-42. doi: 10.3390/ijms16011131.

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.

报道了一种绿色一步法，以胶黏旋覆花植物提取物（PE）为还原剂，通过同时还原氧化石墨烯（GRO）和银离子来制备石墨烯/银纳米复合材料（PE-HRG-Ag）。该植物提取物使高度还原的氧化石墨烯（HRG）表面功能化，这有助于将银纳米颗粒（Ag NPs）与HRG共轭。增加银前驱体的量可提高HRG上银纳米颗粒（NPs）的密度。通过紫外可见（UV-Vis）光谱、粉末X射线衍射（XRD）和能量色散X射线（EDX）对PE-HRG-Ag纳米复合材料的制备过程进行监测。所制备的PE-HRG-Ag纳米复合材料表现出优异的表面增强拉曼散射（SERS）活性，并显著提高了石墨烯拉曼信号的强度。