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Istituto di ricerche sulla combustione
Soppresso il 01/10/2020

Torna all'elenco Contributi in rivista anno 2020

Contributo in rivista

Tipo: Articolo in rivista

Titolo: One-step synthesis of carbon nanoparticles and yellow to blue fluorescent nanocarbons in flame reactors

Anno di pubblicazione: 2020

Formato: Elettronico Cartaceo

Autori: Sirignano M.; Russo C.; Ciajolo A.

Affiliazioni autori: Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le Tecchio 80, Napoli, 80125, Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, P.le Tecchio 80, 80125, Napoli, Italy,

Autori CNR:

  • ANNA CIAJOLO
  • CARMELA RUSSO

Lingua: inglese

Abstract: We propose a one-step synthesis for the large production of carbon nanoparticles (CNP) based on a flame reactor synthesis approach in which the key tunable parameter is the fuel composition. Specifically, the properties of CNP including fluorescent nanocarbons could be varied by fueling a premixed flame with mixtures ranging from ethylene to benzene. CNP characterization was carried out through Raman and UV-Visible spectroscopy defining their in-plane crystallite size and optical band gap. By simply changing the relative percentages of ethylene/benzene in the fuel it is shown how CNP properties can be tuned, fixing the optical band gap and changing the crystallinity and particle size, or viceversa fixing the crystallinity and changing the optical band gap and particle size. Fluorescent nanocarbons presenting typical carbon nanodot characteristics could be obtained by extraction and simple filtration (<20 nm) of CNP. By changing the fuel composition, nanocarbons fluorescing from yellow to blue and showing a quantum yield moving from 3 to 10% could be easily produced. The properties of CNP and of their fluorescent fraction (<20 nm) are directly defined by the flame reactor conditions without any further modifications that is a key advantage for large-scale production of CNP and especially of fluorescent nanocarbons.

Lingua abstract: inglese

Pagine da: 370

Pagine a: 377

Rivista:

Carbon Pergamon : Oxford
Paese di pubblicazione: Regno Unito
Lingua: multilingue
ISSN: 0008-6223

Numero volume: 156

DOI: 10.1016/j.carbon.2019.09.068

Referee: Sì: Internazionale

Stato della pubblicazione: Published version

Indicizzato da: Scopus [2-s2.0-85072663225]

Parole chiave:

  • PAH
  • carbon nano particles
  • carbon nanodots synthesis
  • flame reactor synthesis
  • soot
  • PAH

URL: http://www.scopus.com/record/display.url?eid=2-s2.0-85072663225&origin=inward

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