Synthesis and characterization of boron nitride sponges as a novel support for metal nanoparticles

Abstract

This paper describes a simple synthetic route for the synthesis of hexagonal boron nitride (h-BN) powders with high specific surface area, in which BBr 3 , NH 4 Cl and Al powders are used as starting materials. The structure and composition of the powders were characterized by electron diffraction, Fourier transformation infrared spectroscopy and X-ray photoelectron spectroscopy in the selected area. X-ray diffraction shows wide peaks of crystalline h-BN with the particle size on the nanometer scale, and transmission electron microscopy reveals that the products have a novel spongy morphology. Silver nanoparticles loaded h-BN sponges were prepared via a one-step synthesis method. Different reaction conditions for the formation of h-BN sponges were also investigated.

Synthesis and formation mechanism of cubic boron nitride nanorods in lithium bromide molten salt

“…In our previous studies, cBN was not evidently formed by reacting NaBF 4 with NaNH 2 in LBMS [22], or reacting KBH 4 with NH 4 Cl using CoCl 2 as catalyst [23], or using BBr 3 , NH 4 Cl, and Al powders as reactants in an autoclave system [24]. Although weak absorption of cBN appeared in the FTIR spectra [25], cBN diffraction peaks were rarely found in the XRD spectra.…”

Folate-grafted boron nitride nanotubes: Possible exploitation in cancer therapy

“…2A shows a comparison among IR spectra of BNNTs (1), FABNNTs (2) and folic acid (3). The samples (1) and (2) have the typical bands of BNNTs, which are a strong asymmetric band centered at 1380 cm À1 , corresponding to the bond B-N stretch, along with a less intense band at 790 cm À1 attributed to B-N-B bond (Zheng et al, 2008). The presence of a band centered at 1750 cm À1 , which can be ascribed to C¼O absorption typical of saturated aliphatic esters, can be appreciated in the spectrum of FA-BNNTs (2).…”

Physicochemical Characterization and Cell Adhesion Evaluation of Poly-ε-Caprolactone/BNNT Nanofibers Produced through Electrospinning Process

“…Figure 3a shows a comparative FTIR spectrum study of BNNTs, nPCL and nPCL/BNNTs. BNNTs have characteristics bands which are a strong asymmetric band centered at 1380 cm −1 , which corresponds to the bond B-N stretch, along with a less intense band at 790 cm −1 attributed to B-N-B bond [26]. The main absorption bands in the infrared for nPCL are 2949 cm -1 and 2865 cm -1 associated with asymmetrical and symmetrical stretching of CH 2 , respectively, 1727 cm -1 associated with the stretching of the carbonyl, 1293 cm -1 to CO and CC stretching in the crystalline phase, 1240 cm -1 associated with the COC asymmetric stretching and 1170 cm -1 associated with the COC symmetrical stretching [27,28].The presence of the band at 790 cm -1 in the nPCL/BNNTs indicates again the presence of BNNT in the nPCL.…”