期刊
NANOSCALE
卷 8, 期 5, 页码 3031-3039出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr07678a
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资金
- National Natural Science Foundation of China [51471153, 51372227]
- Natural Science Foundation of Zhejiang province [LY14E020011, 2015C33008]
- 521 Talent Project of Zhejiang Sci-Tech University
A hierarchical structure is a prerequisite for a liquid super-repellent surface due to its capability to catch large numbers of fine air-pockets. In the present work, a series of hierarchical nanocomposites with anti-wettability were fabricated by in situ deposition of spherical SiO2 nanoparticles on Te@C nanofibers. N-2 adsorption-desorption isotherms were used for the first time to characterize the air-pockets and relate them to the wettability of the nanocomposites. The results indicate that superamphiphobicity is a contribution of a delicate synergistic effect between a micro-scale structure and a nano-scale structure. Significant dominance of either of them led to reduced superamphiphobicity. The superamphiphobic beads on a string materials should meet the following features: higher S-BET that ensures enough air-pockets (S-BET value of the superamphiphobic sample is much higher than that of the superhydrophobic one); and the most important, a continuous and balanced distribution of micro and macro air-pockets derived from hierarchical structures.
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