Wettability effect of graphene-based surfaces on silicon carbide and their influence on hydrophobicity of nanocrystalline cerium oxide films

被引:19
|
作者
Souza, Jean C. [1 ]
Neckel, Itamar T. [1 ]
Varalda, Jose [1 ]
Ribeiro, Evaldo [1 ]
Schreiner, Wido H. [1 ]
Mosca, Dante H. [1 ]
Sierakowski, Maria-Rita [2 ]
Fernandes, Vilmar [3 ]
Ouerghi, Abdelkarim [4 ]
机构
[1] Univ Fed Parana, LANSEN, Dept Fis, BR-81531990 Curitiba, Parana, Brazil
[2] Univ Fed Parana, BIOPOL, Dept Quim, BR-81531980 Curitiba, Parana, Brazil
[3] Inst Fed Educ Ciencia & Tecnol Parana, BR-81531990 Curitiba, Parana, Brazil
[4] CNRS, LPN, F-91460 Marcoussis, France
关键词
Epitaxial graphene; CeO2; films; Spectroscopy; Hydrophobicity; MOLECULAR-DYNAMICS SIMULATIONS; EPITAXIAL GRAPHENE; CONTACT-ANGLE; HYBRID; WATER; GRAPHITE;
D O I
10.1016/j.jcis.2014.10.070
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We investigate the water-repellent ability of graphene-based surfaces stabilized on silicon carbide (SiC) and the nanocrystalline cerium oxide (CeO2) films electrodeposited on them. Water contact angle is revealed strongly dependent on the number of graphene monolayers on SiC, indicating partial permeability of graphene on SiC. Fluctuations in the roughness of textured surfaces as well as variations of oxygen vacancy content in CeO2 electrodeposits are determinant for the hydrophobicity of the interaction between water droplets and nanocrystalline CeO2 electrodeposits on monolayers graphene on SiC. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码:71 / 77
页数:7
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