Superhydrophobic iron material surface with flower-like structures obtained by a facile self-assembled monolayer |
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Authors: | Hao-Jie Song Xiang-Qian Shen Hai-Yan Ji Xiao-Jing Jing |
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Institution: | (1) Department of Electrical and Electronic Engineering, Meijo University, Tempaku, Nagoya, 468-8502 Nagoya, Japan;(2) Department of Electrical Engineering and Computer Science, Nagoya University, Chikusa, Nagoya, 464-8603 Nagoya, Japan |
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Abstract: | A simple and economical route based on a K2CO3 mediated process was developed to synthesize three-dimensional (3D) flower-like Fe3O4 micro/nanoflakes on the surface of iron plates by a direct in-situ hydrothermal synthesis method. The prepared micro/nanoflakes
were characterized by X-ray diffraction and scanning electron microscopy. It was found that the width of the nanoflakes ranges
from 50 to 100 nm, and the length of the flakes is about 3 μm. The morphology of Fe3O4 nanostructures can be tuned from simple isolated nanoflakes to the ordered 3D flower-like shape by increasing the reaction
temperature. The wettability of the surface with 3D flower-like micro/nanoflakes was changed from hydrophilicity to superhydrophobicity
by chemical modification with vinyl tirethoxy-silane. The static contact angles for water on both of the modified surfaces
were larger than 150°, which was closely related to the chemical modification and hierarchical structure. Furthermore, the
surfaces retained good superhydrophobic stability in long-term storage as well, which should be critical to the application
of iron materials in engineering. |
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