Journal
MATERIALS EXPRESS
Volume 3, Issue 2, Pages 144-150Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/mex.2013.1110
Keywords
Hexagonal Boron Nitride; Nanosheet; PSS; Exfoliation; Aqueous Dispersion
Funding
- NSFC [51272152]
- Guangdong High Education Fund of Science and Technology Innovation [2012KJCX0053]
- Advanced Talents, SRF for ROCS (SEM), Scientific Research Foundation of Shantou University for Initiation and Innovative Team [NTF10022, ITC11002]
- Guangdong Natural Science Foundation [S2011010005208]
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Few-layered boron nitride nanosheets (BNNSs) were prepared in presence of poly(sodium 4-styrenesulfonate) or sodium perylene-3,4,9,10-tetracarboxylate as dispersion and stabilization agents in water by exfoliation of commercial bulk h-BN powder. Taking advantages of the hydrophobic and/or pi-stacking interactions between BNNS surface and aromatic rings in dispersion agents, the resulting BNNS dispersion was homogenous and stable for a month without precipitation. Microscopic and spectroscopic results revealed that the bulk h-BN materials were intercalated and exfoliated down to 1-2 nm thick sheets. This study provided a facile and efficient method to produce BNNSs in aqueous solution.
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