Facile fabrication of superhydrophobic Bi/Bi₂O₃ surfaces with hierarchical micro-nanostructures by electroless deposition or electrodeposition

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• 作者：Ling Cao ; Xiaoqing Lu ; Fang Pu ; Xiangle Yin ; Yue Xia ; Wei Huang ; Zelin Li
• 关键词：Superhydrophobicity ; Electroless deposition ; Electrodeposition ; Surface self-passivation ; Bi/Bi2O3 surface
• 刊名：Applied Surface Science
• 出版年：1 January, 2014
• 年：2014
• 卷：288
• 期：Complete
• 页码：558-563
• 全文大小：2682 K

文摘

Superhydrophobic metallic surfaces are attracting wide interest. In this work, two facile one-step methods (displacement reaction and electrodeposition) were developed to fabricate superhydrophobic Bi/Bi₂O₃ surfaces with hierarchical porous dendritic structures, where the Bi₂O₃ cover layer was formed by surface self-passivation of the deposited Bi. The influence of various experimental parameters on the surface morphology and wettability were investigated in detail, including concentration of solutions, deposition times, and deposition potentials. A maximum contact angle about 164掳 can be obtained on the fabricated superhydrophobic Bi/Bi₂O₃ surfaces by these two methods under optimized conditions without additional surface modification.