Exfoliation of Hexagonal Boron Nitride (h-BN) in Liquide Phase by Ion Intercalation.

ABSTRACT: A green approach to prepare exfoliated hexagonal boron nitride nanosheets (h-BNNS) from commercially pristine h-BN involving a two-step procedure was investigated. The first step involves the dispersion of pristine h-BN within an aqueous solution containing gelatin and potassium or zinc chloride using a sonication method. The second involves the removal of larger exfoliated h-BNNS through a centrifugation procedure. The exfoliation was caused not only by the sonication effect but also by intercalation of K? and Zn²⁺ ions. Transmission electronic microscopy, X-ray diffraction and Raman spectroscopy techniques show that the obtained h-BNNS generally display a thickness of about a few (2?3) layers with an exfoliation efficiency as high as 16.3 ± 0.4%.

SUBMITTER: Gonzalez Ortiz D 

PROVIDER: S-EPMC6165242 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature