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BERTOLLA, L. ŠULÁK, I. BURŠÍK, J. DLOUHÝ, I. SMILEK, J. MÁCOVÁ, P. HOLAS, J.
Original Title
Exfoliation of hexagonal boron nitride nanosheets in low-modulus concentrated alkali silicate pastes
Type
journal article in Web of Science
Language
English
Original Abstract
We herein demonstrated the exfoliation of hexagonal boron nitride (h-BN) into nanosheets (BNNSs) by using concentrated low-modulus water glass (WG, SiO2/Na2O ratio = 1.6) as high viscosity exfoliating medium. The process led to BNNSs yield of nearly 30%. As the sheared suspension was neutralized with HCl, BNNSs with lateral size of approximately 250 nm and narrow size distribution, were found to align into perfectly parallel rows. High-resolution transmission electron microscopy (HR-TEM) analysis confirmed how WG preserved the integrity of the exfoliated BNNS in comparison with an analogous route with sole hydroxide, resulting in a high amount of BNNSs with undamaged structure. (C) 2021 Published by Elsevier B.V.
Keywords
Ceramics; Nanoparticles; BNNSs; Alkali silicate
Authors
BERTOLLA, L.; ŠULÁK, I.; BURŠÍK, J.; DLOUHÝ, I.; SMILEK, J.; MÁCOVÁ, P.; HOLAS, J.
Released
1. 6. 2021
Publisher
ELSEVIER
Location
AMSTERDAM
ISBN
1873-4979
Periodical
MATERIALS LETTERS
Year of study
292
Number
1
State
Kingdom of the Netherlands
Pages from
129551-1
Pages to
129551-4
Pages count
4
URL
https://www.sciencedirect.com/science/article/pii/S0167577X21002470?via%3Dihub