Tribology Study of Reduced Graphene Oxide Sheets on Silicon Substrate Synthesized via Covalent Assembly

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• 作者：Junfei Ou ; Jinqing Wang ; Sheng Liu ; Bo Mu ; Junfang Ren ; Honggang Wang ; Shengrong Yang
• 刊名：Langmuir
• 出版年：2010
• 出版时间：October 19, 2010
• 年：2010
• 卷：26
• 期：20
• 页码：15830-15836
• 全文大小：987K
• 年卷期：v.26,no.20(October 19, 2010)
• ISSN：1520-5827

文摘

Reduced graphene oxide (RGO) sheets were covalently assembled onto silicon wafers via a multistep route based on the chemical adsorption and thermal reduction of graphene oxide (GO). The formation and microstructure of RGO were analyzed by X-ray photoelectron spectroscopy (XPS), attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, Raman spectroscopy, and water contact angle (WCA) measurements. Characterization by atomic force microscopy (AFM) was performed to evaluate the morphology and microtribological behaviors of the samples. Macrotribological performance was tested on a ball-on-plate tribometer. Results show that the assembled RGO possesses good friction reduction and antiwear ability, properties ascribed to its intrinsic structure, that is, the covalent bonding to the substrate and self-lubricating property of RGO.