Emergence of carbon nanoscrolls from single walled carbon nanotubes: an oxidative route

Saini, Sonia; Reshmi, S.; Gowda, Girish; Bhattacharjee, A. K.

doi:10.1039/d1cp03945h

Cited by 1 publication

(2 citation statements)

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“…Functionalization adds on various functional groups such as carboxyl (-COOH), hydroxyl (-OH), carbonyl (-C-O-C-) etc. which we have reported elsewhere [1], [16]. Figure 2(g) shows a twisted structure in the sample, while Figure 2(h) is an HRTEM image of a polymer grafted MWCNT with a polymer layer of thickness around ~5 nm.…”

Section: Introductionsupporting

confidence: 62%

“…We employed an oxidative acid purification process to remove the embedded Fe catalyst particles and amorphous carbon contaminations from the initial HiPCO SWCNT samples. The purification procedure consisted of three primary stages, which included wet oxidation at 300°C, followed by a concentrated hydrochloric acid (HCl) wash, and concluded with annealing at 900°C in an inert atmosphere [16]. Functionalization process is conducted by combining concentrated H2SO4 and HNO3 (3:1 volume ratio) and weightage amount 100 mg of purified sample in a beaker and stirring the mixture with a magnetic stirrer for 8 hours at 70 ℃.…”

Section: Introductionmentioning

confidence: 99%

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Switching Behavior of the Composite Low Dimensional Structural Hybrids of Carbon After UV Exposure

Saini,

Bhattacharjee,

Gouda

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Low dimensional multi structural components of carbon are of great interest currently owing to their applications in developing flexible plastic electronics. In this work, we discuss emergence of different structural hybrids of carbon from as-prepared HiPCO SWCNTs subjecting them to oxidative acid purification and covalent functionalization process. Transmission electron microscopy (TEM) investigations reveal single wall carbon nanotubes (SWCNTs) serve as a building block to obtain multi wall carbon nanotubes (MWCNTs), graphene sheets (GS), carbon nano scrolls (CNS) structures which coexist in the sample. These structures when grafted with polymer binder and spray coated on Si substrate provide highly sustainable thin film coatings that are stable even in adverse space conditions [1]. These CNT and CNS based composite coatings are promising candidates for stray light control space applications exhibiting a low reflectance of the order of 2-3% in the visible spectral range [1]. Electrical switching behaviour of these films were investigated by capturing current(time) (I(t)) response, displaying promising switching character with distinct ON-OFF cycle. These coatings offer opportunities for the development of facile, cost-effective carbon-based devices without going into the nontrivial task of separating different the structures.

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Section: Introductionsupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%