Boron nitride nanomaterials with different morphologies: Synthesis, characterization and efficient application in dye adsorption

Singla, Preeti; Goel, Neetu; Kumar, Vinod; Singhal, Sonal

doi:10.1016/j.ceramint.2015.04.151

Cited by 80 publications

(31 citation statements)

References 43 publications

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“…Furthermore, UV–vis absorption spectroscopy indicates a new optical transition in CNT@BNNT material (absent in BNNTs or C 60 @BNNT) suggesting that the average diameter of the guest carbon nanotube is ≈0.9 nm which correlates well with that measured by TEM. Overall, the concentric structure CNT@BNNT with insulating BNNTs as the outer shell, and conducting CNTs as the inner core, represents an excellent candidate material for nanoscale coaxial cables which are required for several electronic and sensing applications . Our method of carbon nanotube growth from molecules, directly inside BNNTs, builds on the concept of nanoreactors we developed for carbon nanotubes, and provides the first scalable method for the controlled growth of conducting nanotubes inside insulating nanotubes.…”

Section: Resultsmentioning

confidence: 99%

“…The interactions of C 60 with BNNTs and intermolecular reactions of C 60 inside the nanotube demonstrate the ability of BNNTs to act as an effective template of 1D nanostructures, ultimately leading to the formation of CNT@BNNT, where an electrically conducting CNT is embedded within an insulating BNNT. Such a nanostructure—the world's smallest coaxial cable—affordable using our approach on a preparative scale is predicted to have a wealth of unique functional properties for applications in nanoelectronics and sensing devices …”

Section: Introductionmentioning

confidence: 99%

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Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable

et al. 2017

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as excellent nanoscale containers for mole cules, [4][5][6] metals, [7][8][9] and metal halides, [10] where the spontaneous encapsulation is driven by van der Waals forces that stabilize the confined guest species in the internal channel of the host nanotube. [11] Moreover, a good geometric fit between the critical dimensions of the encapsulated guest and the internal dimensions of the host can result in van der Waals forces that are sufficiently high that insertion is irreversible. This effective nanoscale confinement permits the study of the structure, [12,13] motion, [14] and dynamics [15,16] of individual molecules.Furthermore, extreme spatial confinement in CNTs allows us to probe the kinetics and pathways of chemical reactions and processes at the nanoscale, including the formation of 1D materials templated by the internal channel of the host nanotube. [6,17,18] The simplest and most widely studied confined transformation in single-walled carbon nanotubes (SWCNTs) is the conversion of C 60 @SWCNT, so-called "peapods," into double-walled carbon nanotubes (DWCNTs) via the thermally activated polymerization and coalescence of guest fullerenes to an internal carbon nanotube. [17,19] Numerous more complex processes have also been observed inside nanotubes, such as unusual oligomerization and polymerization reactions, [13,20,21] the growth of graphene nanoribbons, [22][23][24] and the formation of molecular nanodiamonds [18] from encapsulated fullerenes and organic molecules, respectively. As such, chemical reactions inside carbon nanotubes open up new avenues for the synthesis of nanoscale materials with unique structures and functional properties inaccessible by other means.Boron nitride nanotubes (BNNTs) are isoelectronic to CNTs and similarly possess high mechanical strength [25] and excellent chemical and thermal stabilities. [26] In contrast to CNTs, however, BNNTs are electronically insulating, a consequence of the partly ionic interatomic BN bonding, and optically transparent with a wide bandgap. [27,28] While less well explored relative to CNTs, BNNTs represent a remarkable class of 1D nanoscale containers for metals, [29][30][31][32][33][34] metal halides, [35,36] and molecules, such as C 60 , [37] and owing to their transparency to visible light The use of boron nitride nanotubes as effective nanoscale containers for the confinement and thermal transformations of molecules of C 60 -fullerene is demonstrated. The gas-phase insertion of fullerenes into the internal channel of boron nitride nanotubes yields quasi-1D arrays, with packing arrangements of the guest fullerenes different from those in the bulk crystal and critically dependent on the internal diameter of the host nanotube. Interestingly, the confined fullerene molecules: i) exhibit dynamic behavior and temperaturedependent phase transitions analogous to that observed in the bulk crystal, and ii) can be effectively removed from within the internal channel of nanotubes by excessive sonication in organic solvent, indicating weak host-guest inter ...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable

et al. 2017

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“…Zeta potential analysis is important to determine the surface charge of nanoparticles and to predict in vivo fate of nanoparticles because of their cellular interaction related to activation, agglutination, adhesion and for colloidal nanoparticle stability which is described as highly unstable (±0-10 mV), relatively stable (±10-20 mV), moderately stable (±20-30 mV) and highly stable (±30 mV), respectively [19][20][21]. The zeta potential of BNNTs dispersion was detected as −50,9 mV ( Fig.…”

Section: Bnns Characterization With Tem and Zeta Potential Analysismentioning

confidence: 99%

In vitro investigation of the effects of boron nitride nanotubes and curcumin on DNA damage

Çal

Bucurgat

2019

DARU J Pharm Sci

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Backround Stem cells provide an opportunity to analyse the effects of xenobiotic on cell viability, differentiation and cell functions. Evaluation of the possible cytotoxic and DNA damaging effects on bone marrow CD34 + stem cells is important for their ability to differentiate into blood cells, and also for bone marrow diseases therapy. Boron nitride nanotubes and curcumin are potential nanoformulation agents that can be used together in the treatment of cancer or bone marrow diseases. Therefore, it is important to evaluate their possible effects on different cell lines. Objectives In this study, it was aimed to evaluate the cytotoxic and DNA damaging effects of boron nitride nanotubes which are commonly used in pyroelectric, piezoelectric and optical applications, but there is not enough information about its biocompatibility. Also, it was intended to research the effects of curcumin being used frequently in treatment processes for antioxidant properties. Methods The possible cytotoxic and DNA damaging effects of boron nitride nanotubes and curcumin on CD34 + cells, HeLa and V79 cells were evaluated by MTT assay and Comet assay, respectively. Results and conclusion Boron nitride nanotubes and curcumin had cytotoxic effects and cause DNA damage on CD34 + cells, HeLa and V79 cells at several concentrations, probably because of increased ROS level. However, there were not concentrationdependent effect and there were controversial toxicity results of the studied cell lines. Its mechanism needs to be enlightened by further analysis for potential targeted drug development.

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“…It is believed that the high density hydroxyl and amino groups and surface defects on the 3D porous BNNSs provide a large number of active sites for the adsorption of the cationic dye (MB) rather than the anionic dye (MO). 35 The contact time is very important parameter to evaluate the rate of adsorption. As shown in Fig.…”

Section: Characterization Of the Adsorbentsmentioning

confidence: 99%

Template-free synthesis of three dimensional porous boron nitride nanosheets for efficient water cleaning

Sun

et al. 2018

RSC Adv.

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Boron nitride nanomaterials with different morphologies: Synthesis, characterization and efficient application in dye adsorption

Cited by 80 publications

References 43 publications

Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable

Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable

In vitro investigation of the effects of boron nitride nanotubes and curcumin on DNA damage

Template-free synthesis of three dimensional porous boron nitride nanosheets for efficient water cleaning

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