Highly hydrophobic and adhesive performance of graphene ﬁlms

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Highly hydrophobic and adhesive performance of graphene ﬁlms
	Wan SH(万善宏); Wang LP(王立平); Wang LP(王立平); Pu JB(蒲吉斌)
刊名	J. Mater. Chem.
	2011
卷号	21 页码:12251-12258
ISSN号	0959-9428
通讯作者	王立平
中文摘要	Graphene ﬁlms with high hydrophobic and adhesive performance were fabricated via two simple stepschemical exfoliation of natural ﬂake graphite following redox, and ﬁlm formation by suction ﬁltration without any chemical modiﬁcation. Irregularly stacked multilayer graphene nanosheets comprised the microstructure, whereas folding and agglomeration of graphene nanoﬂakes with few layers comprised the nanostructure. The ﬁlms also showed remarkable surface wettability and reversible transition from hydrophobicity to hydrophilicity via periodic alternation of ultraviolet irradiation and air storage. Based on Wenzel’s theory and adsorption dynamics, an optimum mechanism is proposed for the surface wettability behavior. On the one hand, the ﬁlm microstructure and nanostructure enhance the graphene surface hydrophobicity. On the other hand, the capillary force is maximized by the nanostructure such that water ﬁlls the grooves of the rough solid surface. This result is a strong interaction between water and the ﬁlm surface giving highly adhesive property to the ﬁlms. The highly hydrophobic and adhesive performance of the graphene ﬁlms could be useful in the device and biomaterials application.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National natural Science Foundation of China (Grant NO.50905178);the national 973 Project of China (Grant NO.2011CB706603)
语种	英语
公开日期	2012-09-24
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/717]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Wang LP(王立平); Wang LP(王立平)
推荐引用方式 GB/T 7714	Wan SH,Wang LP,Wang LP,et al. Highly hydrophobic and adhesive performance of graphene ﬁlms[J]. J. Mater. Chem.,2011,21:12251-12258.
APA	万善宏,王立平,王立平,&蒲吉斌.(2011).Highly hydrophobic and adhesive performance of graphene ﬁlms.J. Mater. Chem.,21,12251-12258.
MLA	万善宏,et al."Highly hydrophobic and adhesive performance of graphene ﬁlms".J. Mater. Chem. 21(2011):12251-12258.