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An Efficient Substrate-Free Method of Producing SiO2-Based Nanoparticles for Superhydrophobic Applications.


ABSTRACT: We report on the preparation of SiO2-based nanoparticles readily available for superhydrophobic applications. In contrast to usual approaches, our process is substrate-free and based on electrostatic adsorption of small SiO2 particles onto large SiO2 cores with the aid of poly(diallyldimethylammonium chloride) followed by calcination and chemical modification with trichlorododecylsilane. The as-prepared nanoparticles are in powder form and exhibit stable superhydrophobic behavior at room temperature because of the unique combination between the hierarchical raspberry-like structure and low surface energy. If properly stored, the nanoparticles retain their functional properties for several months.

SUBMITTER: de Castro LDC 

PROVIDER: S-EPMC8757329 | biostudies-literature |

REPOSITORIES: biostudies-literature

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