Redox-Switchable Superhydrophobic Silver Composite

被引：15

作者：

Sinha, Arun Kumar ^{[1
]}

Basu, Mrinmoyee ^{[1
]}

Pradhan, Mukul ^{[1
]}

Sarkar, Sougata ^{[1
]}

Negishi, Yuichi ^{[2
]}

Pal, Tarasankar ^{[1
]}

机构：

[1] Tokyo Univ Sci, Tokyo 162, Japan

[2] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India

来源：

LANGMUIR | 2011年 / 27卷 / 18期

关键词：

NANOROD FILMS; OXIDE FILM; SURFACES; WETTABILITY; FABRICATION; WATER;

D O I：

10.1021/la2015429

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unique packaging of Ag(2)O on the surface of polycrystalline AgCl allows fabrication of a new useful, superhydrophobic composite material. This pure inorganic material with surface porosity of submicrometer aperture size fabricates air pockets, which make the composite material superhydrophobic. The new material behaves like lotus leaves, butterfly wings, or water strider's leg in relation to superhydrophobicity. Visible light induces photoreduction of solid Ag(2)O surface layer and generates Ag(0), making the composite surface superhydrophilic. Reoxidation of Ag(0) on the composite surface gives back the hydrophobicity that represents the redox-switchable wetting property of the material.

引用

页码：11629 / 11635

页数：7

共 23 条

[1]

BAIL J, 2007, NANOTECHNOLOGY, V18

[2] Purity of the sacred lotus, or escape from contamination in biological surfaces [J].