Abstract
A facile one-pot method for the fabrication of superhydrophobic fluorinated silica nanoparticles is reported. Fluorinated aggregated silica (A-SiO2/FAS) nanoparticles were synthesized by controlling the nanoparticles assembly, in situ fixation and overgrowth of particle seeds with the assist of tetraethoxysilane (TEOS) in ethanol/water solution and then modification with fluoroalkylsilane (FAS) molecules. Such kind of A-SiO2/FAS nanoparticles showed superhydrophobicity and was not wetted by water, thus it could be served as the encapsulating shells to manipulate liquid droplets. Liquid marbles fabricated from A-SiO2/FAS nanoparticles were used for ammonia gas sensing or emitting by taking advantage of the porosity and superhydrophobicity of the liquid marble shells. In addition, the posibility of A-SiO2/FAS-based liquid marbles as microreactor for dopamine polymerization also was explored.
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The authors thank for the financial support of Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM201509), Fundamental Research Funds of CAF (CAFYBB2017QA017) and Natural Science Foundation of Jiangsu Province (BK20150072).
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Shang, Q., Hu, L., Hu, Y. et al. Fabrication of superhydrophobic fluorinated silica nanoparticles for multifunctional liquid marbles. Appl. Phys. A 124, 25 (2018). https://doi.org/10.1007/s00339-017-1446-8
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DOI: https://doi.org/10.1007/s00339-017-1446-8