Control of Superhydrophilic and Superhydrophobic Graphene Interface

Control of Superhydrophilic and Superhydrophobic Graphene Interface
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DOI:
10.1038/srep01733
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发表时间:
2013-04-25
期刊:
影响因子:
4.6
通讯作者:
Shen, Chengmin
Shen, Chengmin
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dong, Jing;Yao, Zhaohui;Yang, Tianzhong;Jiang, Lili;Shen, Chengmin

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化学改性石墨烯的超疏水和超亲水特性已在大面积垂直排列的少层石墨烯纳米片(FLG)中实现,该纳米片通过微波等离子体化学气相沉积(MPCVD)在Si(111)基底上制备。此外,为了增强润湿性,制备了具有微结构的硅片,在硅片上生长石墨烯纳米片并通过化学方法对其进行改性以形成亲水和疏水结构。获得超亲水石墨烯表面(接触角0°)和超疏水石墨烯表面(接触角152.0°)。结果表明,微结构硅显着增强了亲水和疏水润湿性。
Superhydrophobic and superhydrophilic properties of chemically-modified graphene have been achieved in larger-area vertically aligned few-layer graphene nanosheets (FLGs), prepared on Si (111) substrate by microwave plasma chemical vapor deposition (MPCVD). Furthermore, in order to enhance wettability, silicon wafers with microstructures were fabricated, on which graphene nanosheets were grown and modified by a chemical method to form hydrophilic and hydrophobic structures. A superhydrophilic graphene surface (contact angle 0°) and a superhydrophobic graphene surface (contact angle 152.0°) were obtained. The results indicate that the microstructured silicon enhances the hydrophilic and hydrophobic wettabilities significantly.
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