Carbon nanotubes functionalized with sulfur, selenium, or phosphorus or substituents containing these elements

Drabowicz, J.; Krasowska, Dorota; Ciesielski, Wojciech; Kulawik, Damian; Pyzalska, Magdalena; Zdanowska, Sandra; Dudziński, Bogdan; Pokora-Sobczak, Patrycja; Chrzanowski, Jacek; Makowski, Tomasz

doi:10.1080/10426507.2015.1100193

Cited by 3 publications

(1 citation statement)

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“…Moreover, CNTs are frequently doped with heteroatoms, such as N, B, P, S, Si and Se to modify the chemical properties of the carbon material. The introduction of these atoms increases or decreases reactivity, which results from the excess or deficiency of electrons in the structure, and changes conductivity as well [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

A Facile and Efficient Bromination of Multi-Walled Carbon Nanotubes

et al. 2021

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The bromination of multi-walled carbon nanotubes (MWCNT) was performed with vapor bromine in a closed vessel, and they were subjected to intensive stirring with a magnetic stirrer for up to 14 days. The efficiency of bromination was compared depending upon duration. The structure and surface of the crude and purified products were characterized by detailed physicochemical analyses, such as SEM/EDS, TEM, XRD, TGA, Raman, and XPS spectroscopies. The studies confirmed the presence of bromine covalently bound with nanotubes as well as the formation of inclusion MWCNT–Br2 complexes. It was confirmed that Br2 molecules are absorbed on the surface of nanotubes (forming the CNT-Br2 complex), while they can dissociate close to dangling bonds at CNT defect sites with the formation of covalent C−Br bonds. Thus, any covalent attachment of bromine to the graphitic surface achieved around room temperature is likely related to the defects in the MWCNTs. The best results, i.e., the highest amount of attached Br2, were obtained for brominated nanotubes brominated for 10 days, with the content of covalently bound bromine being 0.68 at% (by XPS).

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