Boron Nitride Nanostructured: Synthesis, Characterization and Potential Use in Cosmetics

Abstract

<p class="MsoNormal" style="text-align:justify;"> <span lang="EN-US">The hexagonal boron nitride has been well investigated. Its layered structure is similar to that of graphite. In the manu</span><span lang="EN-US">facture of cosmetics, this structure is intended to improve the appearance, sensory aspect and makes it easy to mix ex</span><span lang="EN-US">cipients contained in the formulation in the mixture process. In cosmetology, the efficiency and the penetration of active substances into skin are known to be directly related to the particle size. However, only recently their nanostructured properties have been explored. In this work, the synthesis of hexagonal boron nitride in the nanoscale, its composition, structure, morphology and potential for future application in sunscreens are being investigated. The boron nitride was synthesized from boric acid and melamine to a heat treatment at 1600</span><span style="font-family:宋体;">℃</span><span lang="EN-US">. The crystal structure was characterized by (XRD) and its morphology was examined by (SEM) and (TEM); the chemical composition was studied by (FTIR), (EDS) and (EELS), the texture characterization by (BET) and its potential in sunscreens by (FTIR and UV/VIS). Re</span><span lang="EN-US">sults have shown that boron nitride may be synthesized in the nanoscale and that this material has the potential to be incorporated into cosmetics.</span> </p

Synthesis, Functionalization, and Bioapplications of Two-Dimensional Boron Nitride Nanomaterials

“…Thus, their synthesis in large quantities is necessary. Addressing this issue, a two-step synthesis procedure was reported (Ansaloni and Sousa, 2013). In this procedure, first, boric acid (H 3 BO 3 ) and melamine (C 3 H 6 N 6 ) solutions were prepared and mixed for 48 h. Then, their precipitate was filtered and dried at 37 • C. The obtained product, B 4 N 3 O 2 H (precursor of 2D-BNNs), was first heated to 500 • C, and, then, it was placed in an aluminum boat to heat at 1,600 • C under ammonia gas flow for 2 h. This procedure yielded large amounts of hBN-based 2D-BNNs, and their infrared light absorption ability was very good at making these materials powerful additives for sunscreen application.…”

“…Considering their biocompatibility and low cytotoxicity, BNbased nanomaterials can also be used in biological applications, including imaging. In one report, it was shown that hBNpatterned 2D-BN nanosheets had luminescent properties (Ansaloni and Sousa, 2013). They were synthesized from boron powders with NH 3 gas as precursors and FeS/Fe 2 O 3 as catalysts via a thermal chemical vapor deposition (TCVD) method, and they were well-characterized, using several spectroscopic and imaging techniques to ensure the structural elucidation of the material (Ansaloni and Sousa, 2013).…”

Few-Layered Hexagonal Boron Nitride: Functionalization, Nanocomposites, and Physicochemical and Biological Properties

“…Just like carbon, it occurs in amorphous and crystalline forms. The major crystalline forms are hexagonal boron nitride (h-BN) compared to graphite, sphalerite boron nitride (β-BN) similar to cubic diamond, and rhombohedral (r-BN) and wurtzite boron nitride (γ-BN), which is in hexagonal diamond form [3,[8][9][10]. Boron nitride nanotubes (BNNT) are also known.…”

“…The form of h-BN presents the most appropriate functionality in cosmetic production/properties (e.g., as a slip modifier). The use of h-BN in cosmetic formulation suggests the lack of toxicity/cytotoxicity [2][3][4]; thus, the new approach of h-BN, or its exfoliated form, to study its modification and functionalization to obtain a potentially interesting nanomaterial in, e.g., the context of theranostic concept is expected.…”

Synthesis, characterization, and biological properties of composites of hydroxyapatite and hexagonal boron nitride

“…In this case, the small particle size is important because a high surface area is provided, which increases the amount of encapsulated cosmetics actives. The excellent performance in the dispersion and the nontoxic, transparent, and chemically inert qualities make possible and advantageous the use of h‐BN in cosmetics . Furthermore, the use of h‐BN is also proposed in nanomedicine on account of the good biocompatibility and biodegradation properties.…”