Electrical properties of O-self-doped boron-nitride nanotubes and the piezoelectric effects of their freestanding network film

Abstract

Boron-nitride nanotubes (BNNTs) are a common one-dimensional (1D) nanostructure that possess piezoelectric potential due to ion-covalent boron-nitride (BN) bonding. Harnessing the advantages offered by high-stability BN structures, these materials have been used for various new applications such as nanogenerators, nanotransistors, and nano-artificial eardrums. In this paper, we used nano-iron oxide red as a catalyst and boron powder in an aqueous dispersion as the boron source to synthesize highpurity O-self-doped BNNTs and film. We investigated the electrical properties of O-self-doped BNNTs and the piezoelectricity of freestanding BNNT film and demonstrated that the electrical properties of O-self-doped BNNTs improved dramatically compared to those of non-doped BNNTs. We also analyzed the band gaps and density of states (DOS) of the O-self-doped BNNTs with the Spanish Initiative for Electronic Simulation with Thousands of Atoms (SIESTA) code to explain the improvement. In addition, we revealed the piezoelectric voltage coefficient g 31 of O-self-doped BNNTs (0.28 V m N À1 ) network films, which can guide future applications for vibration nanosensors and transducers under extreme conditions. † Electronic supplementary information (ESI) available. See

Enhancing the mechanical features of poly(vinyl) alcohol nanofibers with the addition of boron nitride

“…Thus, nanostructures have chemical and physical features that are characteristic of neither atomic nor mass equivalents [8]. Therefore, different studies have been realized for the production and characterization of h-BN in its forms such as nanotubes [9][10][11], fullerenes [12], nano-cones [13], nano-capsules [14,15], and nanoparticles [16,17] and the superior features of h-BN and the advantages of nanotechnology have been tried to be combined. Recently, limited studies have been published on the BN using PVA as a matrix.…”

Facile covalent functionalization of boron nitride nanotubes via coupling reaction

“…3,4,16 Not surprisingly, studies on the properties and uses of this exotic material have attracted a lot of attention due to its excellent qualities. Over the last decades, many applications have relied on BNNT including high thermal conductivity, [17][18][19][20][21][22] thermal stability, 23 synthetic biology, [24][25][26] aerospace, 27 electrical technology, 28,29 biomedical materials, [30][31][32] optical materials, 33,34 and even power generation. 35 In spite of material potential, there are still critical issues preventing them from further applications.…”

Defect Engineering on Boron Nitride for O2 Activation and Subsequent Oxidative Desulfurization

“…Therefore, in recent years, several efforts have been made to functionalize the h‐BN monolayer, which can massively expand its area of applications. Indeed, the electronic structure and properties of h‐BN nanomaterials can be effectively tuned through chemical doping and modification, [27] specifically, the introduction of dopants such as carbon, [17,18,27–29] oxygen, [10,17,27,28,30,31] and even metal atoms [32] in h‐ BN has been achieved in experiments and mostly applied into the photo‐ and electro‐ catalytic field. Beyond the heteroatom doping, the antisite defects (B replacing N, or N replacing B) are probably active centers for catalytic reactions.…”