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

被引：21

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

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2015年 / 441卷

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

页码：71 / 77

页数：7

共 30 条

[1]

Azimi G, 2013, NAT MATER, V12, P315, DOI [10.1038/NMAT3545, 10.1038/nmat3545]

[2] SATELLITE STRUCTURE IN X-RAY PHOTOELECTRON-SPECTRA OF SOME BINARY AND MIXED OXIDES OF LANTHANUM AND CERIUM [J].

BURROUGHS, P ;

HAMNETT, A ;

ORCHARD, AF ;

THORNTON, G .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1976, (17) :1686-1698

[3] In-situ formation of SiC nanocrystals by high temperature annealing of SiO2/Si under CO: A photoemission study [J].

D'angelo, M. ;

Deokar, G. ;

Steydli, S. ;

Pongracz, A. ;

Pecz, B. ;

Silly, M. G. ;

Sirotti, F. ;

Cavellin, C. Deville .

SURFACE SCIENCE, 2012, 606 (7-8) :697-701

[4] Fundamental issues of reactive wetting by liquid metals [J].

Dezellus, O. ;

Eustathopoulos, N. .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (16) :4256-4264

[5]

Emtsev KV, 2009, NAT MATER, V8, P203, DOI [10.1038/NMAT2382, 10.1038/nmat2382]

[6] Loss of magnetization induced by doping in CeO2 films [J].

Fernandes, V. ;

Schio, P. ;

de Oliveira, A. J. A. ;

Schreiner, W. H. ;

Varalda, J. ;

Mosca, D. H. .

JOURNAL OF APPLIED PHYSICS, 2011, 110 (11)

[7] Valence Evaluation of Cerium in Nanocrystalline CeO2 Films Electrodeposited on Si Substrates [J].

Fernandes, V. ;

Graff, I. L. ;

Varalda, J. ;

Amaral, L. ;

Fichtner, P. ;

Demaille, D. ;

Zheng, Y. ;

Schreiner, W. H. ;

Mosca, D. H. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (01) :K27-K33

[8] The state of monolayers adsorbed at the interface solid-aqueous solution [J].

Fowkes, FM ;

Harkins, WD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :3377-3386

[9] Controlled Synthesis of CeO2/Graphene Nanocomposites with Highly Enhanced Optical and Catalytic Properties [J].

Jiang, Linhai ;

Yao, Mingguang ;

Liu, Bo ;

Li, Quanjun ;

Liu, Ran ;

Lv, Hang ;

Lu, Shuangchen ;

Gong, Chen ;

Zou, Bo ;

Cui, Tian ;

Liu, Bingbing ;

Hu, Guangzhi ;

Wagberg, Thomas .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (21) :11741-11745

[10] Wet chemical processing of (0001)Si 6H-SiC hydrophobic and hydrophilic surfaces [J].

King, SW ;

Nemanich, RJ ;

Davis, RF .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (05) :1910-1917

← 1 2 3 →