The study of nitrogen inclusion in carbon nanotubes obtained by catalytic laser-induced chemical vapour deposition (C-LCVD)

Morjan, I.; Ilie, Alina; Scarisoreanu, M.; Gavrilă, Lucian; Dumitrache, Florian; Vasile, Eugeniu; Turcu, Rodica; Miron, Cristina

doi:10.1016/j.apsusc.2017.06.296

Cited by 11 publications

(1 citation statement)

References 48 publications

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“…Figure 10a, b shows the curve fittings of C 1 s and O 1 s for the samples. Generally, C 1 s region of carbonaceous materials can be deconvoluted into following peaks [67]: carbon in graphite at * 284.5 eV, tetrahedral carbon (sp 3 C-C) at * 285.6 eV [68], [52,70,71]. Combining the XPS survey results shown in Fig.…”

Section: Xpsmentioning

confidence: 99%

Highly efficient nitrogen-doped carbon nanotubes coated on paper-like sintered stainless steel fibers as metal-free structured catalyst for phenol degradation

2020

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Three types of carbon nanotubes coated on paper-like sintered stainless steel fibers (PSSF) were synthesized and applied for continuous catalytic wet hydrogen peroxide oxidation (CWPO) of phenol. The novel metal-free nitrogendoped carbon nanotube-coated PSSF catalyst (N-CNTs/PSSF) was designed by direct chemical vapor deposition using melamine as solid precursor for the first time, and CNTs/PSSF and Fe 2 O 3 -deposited CNTs/PSSF (Fe-CNTs/PSSF) catalysts were synthesized for comparison. Characterization results showed that all the catalysts exhibited three-dimensional networks structure, with nanotubes wrapping on the stainless steel fibers successfully, and the N-CNTs showed distinct irregular corrugated morphology with nitrogen-doping level about 5.18 at.%. CWPO of phenol revealed that the N-CNTs/PSSF catalyst achieved favorable catalytic activity and highest stability during 100-h reaction (phenol and TOC conversions reached about 90% and 50%, respectively), while phenol conversions of CNTs/PSSF and Fe-CNTs/PSSF catalysts decreased over time to 72% and 58%, respectively. The N-CNTs/PSSF catalyst also showed the lowest Fe weight loss ratio (about 2.44 wt%) among the three catalysts. The favorable catalytic results of N-CNTs/PSSF can be ascribed to the synergistic effects of the strong affinity toward polar molecules of N-CNTs, as well as the enhancement in contact efficiency associated with three-dimensional networks structure of the PSSF.

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