Comparative high pressure Raman study of boron nitride nanotubes and hexagonal boron nitride

Saha, Surajit; Muthu, D. V. S.; Golberg, Dmitri; Tang, Chengchun; Zhi, Chunyi; Bando, Yoshio; Sood, A. K.

doi:10.1016/j.cplett.2006.01.062

Cited by 53 publications

(70 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This peak should be attributed to the high frequency intralayer E 2g vibration mode of h-BN, which is in a good agreement with other reports21424344454647. FWHM of the present characteristic peak is only 10 cm −1 , which is narrower than that in the former reports (13 cm −1 45, 16 cm −1 44, 19 cm −1 21, 27 cm −1 46 and 30 cm −1 47). It suggests that the BN sheets by the present substitution reaction have better crystalline quality.…”

Section: Discussionsupporting

confidence: 93%

Cheap, Gram-Scale Fabrication of BN Nanosheets via Substitution Reaction of Graphite Powders and Their Use for Mechanical Reinforcement of Polymers

Fei

Gan

et al. 2014

Sci Rep

View full text Add to dashboard Cite

As one of the most important two-dimensional (2D) materials, BN nanosheets attracted intensive interest in the past decade. Although there are many methods suitable for the preparation of BN sheets, finding a cheap and nontoxic way for their mass and high-quality production is still a challenge. Here we provide a highly effective and cheap way to synthesize gram-scale-level well-structured BN nanosheets from many common graphite products as source materials. Single-crystalline multi-layered BN sheets have a mean lateral size of several hundred nanometers and a thickness ranging from 5 nm to 40 nm. Cathodoluminescence (CL) analysis shows that the structures exhibit a near band-edge emission and a broad emission band from 300 nm to 500 nm. Utilization of nanosheets for the reinforcement of polymers revealed that the Young's modulus of BN/PMMA composite had increased to 1.56 GPa when the BN's fraction was only 2 wt.%, thus demonstrating a 20% gain compared to a blank PMMA film. It suggests that the BN nanosheet is an ideal mechanical reinforcing material for polymers. In addition, this easy and nontoxic substitution method may provide a universal route towards high yields of other 2D materials.

show abstract

Section: Discussionsupporting

confidence: 93%

Cheap, Gram-Scale Fabrication of BN Nanosheets via Substitution Reaction of Graphite Powders and Their Use for Mechanical Reinforcement of Polymers

Fei

Gan

et al. 2014

Sci Rep

View full text Add to dashboard Cite

show abstract

“…With increasing pressure the intensity of the E 2g tangential mode decreases and vanishes completely after about 12 GPa. 16 Interestingly, the mode does not recover on decompression (Fig. 2).…”

Section: Resultsmentioning

confidence: 89%

Irreversible Pressure-Induced Transformation of Boron Nitride Nanotubes

Saha¹,

Gadagkar²,

Maiti³

et al. 2007

j nanosci nanotechnol

Self Cite

View full text Add to dashboard Cite

We have used Raman spectroscopy to study the behavior of multi-walled boron nitride nanotubes and hexagonal boron nitride crystals under high pressure. While boron nitride nanotubes show an irreversible transformation at about 12 GPa, hexagonal boron nitride exhibits a reversible phase transition at 13 GPa. We also present molecular dynamics simulations which suggest that the irreversibility of the pressure-induced transformation in boron nitride nanotubes is due to the polar nature of the bonds between boron and nitrogen.

show abstract

“…These include specific vibrational modes, [204] high-pressure (in the range of several dozens of GPa) Raman spectroscopy revealing BNNT structural destruction characteristics, [205] EXAFS, [206] isotopic enrichment, [207,208] and immobilization of ferritin proteins on BNNT surfaces for some prospective medical and nanobiological applications. [209] The key targets at present (before the real integration of BNNTs into modern nanotechnology for human needs) are on-demand BNNT chemical and morphological manipulation [210] and bandgap engineering (e.g., through C-doping), [137,177,[211][212][213] and analysis of their environmental and human body-related safety issues.…”

Section: Other Propertiesmentioning

confidence: 99%

Boron Nitride Nanotubes

et al. 2007

Self Cite

View full text Add to dashboard Cite

The current status of research on boron nitride nanotubes (BNNTs)—carbon nanotube structural analogues—is discussed. Latest achievements in BNNT synthesis, morphology, and atomic structure analysis as well as physical, chemical, and functional property evaluations are reviewed. Similarities and differences between structural parameters and properties of BNNTs in comparison with conventional carbon nanotubes are particularly highlighted. Recent breakthroughs in BNNT filling, doping and functionalization, morphology, and electronic structure engineering are examined. Finally, prospective BNNT applications for fabricating field‐effect transistors, gas accumulators, and reinforcing polymer films are presented.

show abstract

Comparative high pressure Raman study of boron nitride nanotubes and hexagonal boron nitride

Cited by 53 publications

References 25 publications

Cheap, Gram-Scale Fabrication of BN Nanosheets via Substitution Reaction of Graphite Powders and Their Use for Mechanical Reinforcement of Polymers

Cheap, Gram-Scale Fabrication of BN Nanosheets via Substitution Reaction of Graphite Powders and Their Use for Mechanical Reinforcement of Polymers

Irreversible Pressure-Induced Transformation of Boron Nitride Nanotubes

Boron Nitride Nanotubes

Contact Info

Product

Resources

About