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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 | 2022 Jan

REPOSITORIES: biostudies-literature

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

de Castro Lucas D C LDC Larocca Nelson M NM Oliveira Osvaldo N ON Pessan Luiz A LA

ACS omega 20211222 1

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 superhyd ...[more]

PMID: 35036787

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