Evidence map›Paper›PMID 34633574›Full record

ArticleNanoscale research letters2021

Unveiling the Atomic and Electronic Structure of Stacked-Cup Carbon Nanofibers.

D W Boukhvalov, I S Zhidkov, A Kiryakov, J L Menéndez, L Fernández-García, A I Kukharenko, S O Cholakh, A F Zatsepin, E Z Kurmaev

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Nanoscale research letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.2field-weighted citation impact, top 54% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 3 countries.

D W BoukhvalovCollege of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. danil@njfu.edu.cn.
I S ZhidkovInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
A KiryakovInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
J L MenéndezCentro de Investigación en Nanomateriales Y Nanotecnología, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Oviedo (UO)-Principado de Asturias, Avenida de la Vega 4-6, El Entrego, 33940, San Martin del Rey Aurelio, Asturias, Spain.
L Fernández-GarcíaCentro de Investigación en Nanomateriales Y Nanotecnología, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Oviedo (UO)-Principado de Asturias, Avenida de la Vega 4-6, El Entrego, 33940, San Martin del Rey Aurelio, Asturias, Spain.
A I KukharenkoInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
S O CholakhInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
A F ZatsepinInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
E Z KurmaevInstitute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
Ural Federal University · RUConsejo Superior de Investigaciones Científicas · ESInstitute of Physics and Technology · RUM.N. Mikheev Institute of Metal Physics · RUNanjing Forestry University · CN

Funding

Ministry of Education and Science of the Russian Federation FEUZ-2020-0059Ministry of Education and Science of the Russian Federation АААА-А18-118020190098-5
6 · The paper itself

Abstract

We report results of comprehensive experimental exploration (X-ray photoemission, Raman and optical spectroscopy) of carbon nanofibers (CNFs) in combination with first-principles modeling. Core-level spectra demonstrate prevalence of sp2 hybridization of carbon atoms in CNF with a trace amount of carbon-oxygen bonds. The density functional theory (DFT)-based calculations demonstrated no visible difference between mono- and bilayers because σ-orbitals are related to in-plane covalent bonds. The influence of the distortions on π-peak is found to be significant only for bilayers as a result of π-π interlayer bonds formation. These results are supported by both experimental Raman and XPS valence band spectra. The combination of optical measurements with a theoretical modeling indicates the formation of optically active graphene quantum dots (GQDs) in the CNF matrix, with a radiative relaxation of the excited π* state. The calculated electronic structure of these GQDs is in quantitative agreement with the measured optical transitions and provides an explanation of the absence of visible contribution from these GQDs to the measured valence bands spectra.

Indexed as

Carbon nanofibersDFTNanocarbonsPhotoluminescenceQuantum dotsXPS

Identifiers

PMID34633574
PMCPMC8505591
OpenAlexW3206966171

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.