Methods of hexagonal boron nitride exfoliation and its functionalization: covalent and non-covalent approaches

Abstract

Synthesis methods for the exfoliation of BNNSs and BNNS functionalization methods are reviewed.

Polyvinylidene fluoride/polysulfone/air plasma defected hexagonal boron nitride emerging nano blends for electrostatic dissipation

“…Then after solution A and B were mixed to obtain a homogeneous solute (solution C). During this process, h‐BN powder (UT and PT) was sonicated in DMF for 30 min to obtain excellent dispersion discussed in mutual support of literature 32–34 . Further h‐BN solution was slowly added into solute C (for 2 h at 60°C at 600 rpm).…”

“…During this process, h-BN powder (UT and PT) was sonicated in DMF for 30 min to obtain excellent dispersion discussed in mutual support of literature. [32][33][34] Further h-BN solution was slowly added into solute C (for 2 h at 60 C at 600 rpm). Finally, PVDF/ PSF/h-BN nano blends solution was poured into a glass petri dish and dried at 60 C temperature in a hot-air oven overnight to obtain solvent free films.…”

Thermally conductive polymer-based composites: fundamentals, progress and flame retardancy/anti-electromagnetic interference design

“…130 For thermally conductive fillers without functional groups, such as BN, a non-covalent modification method such as PDA modification is easy to adopt, since covalent modification commonly requires very harsh conditions, such as strong alkali, strong acid or high temperature treatment. 126 For thermally conductive fillers with functional groups, such as Al 2 O 3 , which is abundant in hydroxyls, the covalent modification method such as silane coupling agent treatment is convenient and effective because the silane coupling agent can react with the hydroxyl group after hydrolysis to form covalent bonds under very mild conditions. 131…”

“…125 The modification of fillers can be covalent or non-covalent. 126 The former method is to introduce hydroxyl groups on the surface of fillers by ball milling, strong acid and alkali treatment, and high temperature treatment; then the organic long links are branched to the surface of the fillers through the hydrolysis of a silane coupling agent, titanate coupling agent, aluminate coupling agent, etc. The latter method is to introduce organic long links on the surface of fillers by electrostatic interactions, p-p interactions, etc.…”

Transition of electrochemical measurement to machine learning in the perspective of two-dimensional materials

“…Hence, there is a progressive trend of exploring novel 2D materials, in which the structure of those materials is similar to graphene. Due to the superior properties of those two-dimensional materials, it is obvious that the search for 2D materials was then expanded to the transition metal dichalcogenides (TMDs) family (Bissett et al, 2016), hexagonal boron nitride (also known as "white graphene") (Gautam and Chelliah, 2021), Mxene (Gogotsi and Anasori, 2019), and some heterostructure forming from those original materials (Keerthi et al, 2021). In recent years, 2D materials become central to the most in the context of many electrochemical applications including energy storage (Nualchimplee et al, 2022), electrocatalysts (McAteer et al, 2016), ions selective membrane (Hirunpinyopas et al, 2020) and so on.…”