Intrinsic diameter dependent degradation of single-wall carbon nanotubes from ion irradiation

Rossi, Jamie E.; Cress, Cory D.; Merrill, Andrew; Soule, Karen J.; Cox, Nathanael D.; Landi, Brian J.

doi:10.1016/j.carbon.2014.09.081

Cited by 18 publications

(26 citation statements)

References 33 publications

(67 reference statements)

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“…The structural damage leads to the decrease in optically active states and hence inherent oscillator strength corresponding to different transitions decreases. Similar results have also been observed for boron ion irradiated SWCNTs and Ar and H irradiated MWCNTs [42,43]. There is no significant shift in peak intensities has been observed which indicates that there is no change in the band gap of SWCNTs under heavy ion irradiation.…”

Section: Optical Absorption Spectroscopysupporting

confidence: 82%

Swift heavy ion induced modifications of single walled carbon nanotube thin films

Vishalli

Raina

Avasthi

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Optical Absorption Spectroscopysupporting

confidence: 82%

Swift heavy ion induced modifications of single walled carbon nanotube thin films

Vishalli

Raina

Avasthi

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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“…The SWCNTs used in this work were synthesized in-house via laser vaporization, and their physical properties, including average length (~5 µm) [25] and diameter (~1.1 nm) [26], have been well documented in the literature. The purity of the SWCNT starting material must be accurately characterized to provide a reference against which changes due to surfactant contamination can be compared, and to assess the efficacy of the reagent treatments.…”

Section: Resultsmentioning

confidence: 99%

Removal of sodium dodecyl sulfate surfactant from aqueous dispersions of single-wall carbon nanotubes

Rossi

Soule

Cleveland

et al. 2017

Journal of Colloid and Interface Science

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A reagent-based treatment method was developed for the removal of sodium dodecyl sulfate (SDS) from aqueous dispersions of single-wall carbon nanotubes (SWCNTs). Based on a survey of various reagents, organic solvents emerged as the most effective at interrupting the SDS:SWCNT interaction without producing deleterious side reactions or causing precipitation of the surfactant. Specifically, treatment with acetone or acetonitrile allows for the facile isolation of SWCNTs with near complete removal of SDS through vacuum filtration, resulting in a 100x reduction in processing time. These findings were validated via quantitative analysis using thermogravimetric analysis, Raman spectroscopy, 4-point probe electrical measurement, and X-ray photoelectron spectroscopy. Subsequent thermal oxidation further enhances the purity of the reagent treated samples and yields bulk SWCNT samples with >95% carbonaceous purity. The proposed reagent treatment method thus demonstrates potential for large volume SWCNT processing.

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“…The changes observed in both the relative D/G′ Raman ratio and electrical transport are related to the defect density and inter-vacancy length ( L v ), which is the mean distance between vacancies along the length of the SWCNT , or the mean vacancy spacing within the area of graphenic materials . At a fluence of 1 × 10 13 ions/cm 2 L v is 30.6 nm and decreases to 0.3 nm as the fluence increases to 1 × 10 15 ions/cm 2 .…”

Section: Discussionmentioning

confidence: 99%

Enhanced Electrical Transport in Carbon Nanotube Thin Films through Defect Modulation

Rossi¹,

Cress

Goodman³

et al. 2016

J. Phys. Chem. C

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The electrical properties of single-wall carbon nanotube (SWCNT) thin films were enhanced through defect introduction and subsequent thermal annealing in forming gas. The defect density in the SWCNT thin films was modulated using ion irradiation with 150 keV 11B+ over the fluence range of 1 × 1013 and 1 × 1015 ions/cm2. Following thermal annealing at 1000 °C in forming gas, partial recovery in the optical absorbance and Raman spectra is observed at all fluences studied, with 100% recovery observed in samples exposed to a fluence less than 5 × 1013 ions/cm2. By comparison, annealing yields near complete recovery of the electrical conductivity at all fluences studied (up to 1 × 1015 ions/cm2). Remarkably, radiation exposure up to a fluence of 1 × 1014 ions/cm2 followed by thermal annealing improves the electrical conductivity, exceeding the as-purified value by as much as ∼4×. These results implicate the origin of the enhanced SWCNT network conductance with the formation of transport-enhancing inter-SWCNT bridges that decrease inter-SWCNT junction resistance, thereby enhancing the overall network connectivity.

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Intrinsic diameter dependent degradation of single-wall carbon nanotubes from ion irradiation

Cited by 18 publications

References 33 publications

Swift heavy ion induced modifications of single walled carbon nanotube thin films

Swift heavy ion induced modifications of single walled carbon nanotube thin films

Removal of sodium dodecyl sulfate surfactant from aqueous dispersions of single-wall carbon nanotubes

Enhanced Electrical Transport in Carbon Nanotube Thin Films through Defect Modulation

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