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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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de Castro, Lucas D. C. [1] ; Larocca, Nelson M. [2] ; Oliveira, Jr., Osvaldo N. [1] ; Pessan, Luiz A. [2]
Total Authors: 4
[1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ACS OMEGA; DEC 2021.
Web of Science Citations: 0

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. (AU)

FAPESP's process: 20/02938-0 - Coloured patterns based on bioinspired photonic crystals for mechanocromic applications
Grantee:Lucas Daniel Chiba de Castro
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis
Grantee:Osvaldo Novais de Oliveira Junior
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 15/20052-0 - Development of bioinspired superhydrophobic coatings via layer-by-layer deposition
Grantee:Lucas Daniel Chiba de Castro
Support Opportunities: Scholarships in Brazil - Doctorate