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Biological Reduction of Graphene Oxide Using Plant Leaf Extracts

机译：植物叶片提取物对氧化石墨烯的生物还原作用

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摘要

Two-dimensional graphene has attracted significant attention due to its unique mechanical, electrical, thermal, and optical properties. Most commonly employed methods to chemically reduce graphene oxide to graphene use hydrazine or its derivatives as the reducing agent. However, they are highly hazardous and explosive. Various phytochemicals obtained from different natural sources such as leaves and peels of a plant are used as reducing agents in the preparation of different gold, silver, copper, and platinum nanoparticles. In this study, seven plant leaf extracts (Cherry, Magnolia, Platanus, Persimmon, Pine, Maple, and Ginkgo) were compared for their abilities to reduce graphene oxide. The optimized reaction conditions for the reduction of graphene oxide were determined as follows. Type of plant: Cherry (Prunus serrulata), reaction time: 12 h, composition of the reaction mixture: 16.7% vlv of plant leaf extract in total suspension, and temperature: 95°C. The degree of reduction caused, by Cherry leaf extract was analyzed by elemental analysis and X-ray photoelectron spectroscopy. The reduction of graphene oxide was also confirmed by ultraviolet-visible spectroscopy, Fourier transform-infrared spectroscopy, Raman spectroscopy, X-ray diffraction, transmission electron microscopy, and thermogravimetric analysis.
机译：二维石墨烯因其独特的机械，电，热和光学特性而备受关注。将石墨烯氧化物化学还原成石墨烯的最常用方法是使用肼或其衍生物作为还原剂。但是，它们具有很高的危险性和爆炸性。从不同的天然来源（例如植物的叶子和果皮）获得的各种植物化学物质在制备不同的金，银，铜和铂纳米粒子时用作还原剂。在这项研究中，比较了七种植物叶提取物（樱桃，木兰，悬铃木，柿子，松树，枫树和银杏）减少氧化石墨烯的能力。还原氧化石墨烯的最佳反应条件如下确定。植物类型：樱桃（Prunus serrulata），反应时间：12小时，反应混合物的组成：总悬浮液中植物叶子提取物的16.7％vlv，温度：95°C。通过元素分析和X射线光电子能谱分析了樱桃叶提取物引起的还原程度。氧化石墨烯的还原还通过紫外可见光谱，傅立叶变换红外光谱，拉曼光谱，X射线衍射，透射电子显微镜和热重分析来确认。

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