| L-半胱氨酸还原氧化石墨烯的研究 |
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| 引用本文： | 李永锋,刘燕珍,杨永岗,温月芳,王茂章.L-半胱氨酸还原氧化石墨烯的研究[J].材料导报,2011,25(12):38-40. |
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| 作者姓名： | 李永锋 刘燕珍 杨永岗 温月芳 王茂章 |
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| 作者单位： | 1. 中国科学院山西煤炭化学研究所,中国科学院炭材料重点实验室,太原030001;中国科学院研究生院,北京100049
2. 中国科学院山西煤炭化学研究所,中国科学院炭材料重点实验室,太原030001 |
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| 基金项目： | 国家"973"计划项目 |
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| 摘 要： | 采用改进Hummers法合成氧化石墨,在水中超声分散获得氧化石墨烯水溶胶,并加入L-半胱氨酸于95℃进行回流反应后得到还原氧化石墨烯。采用X射线衍射仪、傅里叶变换红外光谱仪和热重-差热扫描仪等探讨氧化石墨烯还原前后的结构与性能变化。结果表明,L-半胱氨酸能有效还原氧化石墨烯,且还原后的氧化石墨烯在乙醇中有较好的分散性,其所制薄膜的导电率为500S/m。由此法制备的石墨烯有望广泛应用于电子、光电、电容器和传感器等器件中。
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| 关 键 词： | 氧化石墨 石墨烯 L-半胱氨酸 还原 |
Reduction of Graphene Oxide by L-cysteine |
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| LI Yongfeng,LIU Yanzhen,YANG Yonggang,WEN Yuefang,WANG Maozhang.Reduction of Graphene Oxide by L-cysteine[J].Materials Review,2011,25(12):38-40. |
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| Authors: | LI Yongfeng LIU Yanzhen YANG Yonggang WEN Yuefang WANG Maozhang |
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| Affiliation: | LI Yongfeng1,2,LIU Yanzhen1,YANG Yonggang1,WEN Yuefang1,WANG Maozhang1(1 Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,2 Graduate University of Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | Graphite oxide was synthesized by the modified Hummers method,followed by ultrasonic delamination in water to produce a stable hydrosol of graphene oxide sheets(GO).Then the reduced graphene oxide(RGO) was obtained with the addition of L-cysteine,followed by refluxed at 95℃.The structure and properties of GO before and after reduction were investigated by X-ray diffraction,fourier transform infrared spectroscopy and thermogravimetric-differential thermal analysis.The results show that the GO can be reduced effectively by environmentally friendly method using L-cysteine as a reducing reagent.RGO made by this approach exhibits good dispersion in ethanol,and excellent electrical conductivity is up to 500S/m,which is expected to widely used in electronics,optoelectronics,capacitors,sensors devices and so on. |
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| Keywords: | graphene oxide grapheme L-cysteine reduction |
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