Nanosized Carbon Particles From Natural Gas Soot
By Lei Tian, Debraj Ghosh, Wei Chen, S. Pradhan, X. Chang, Shaowei Chen. 2009
652 citations recorded by the source corpus.
Carbon nanoparticles were prepared by refluxing the combustion soot of natural gas in nitric acid. Transmission Electron Microscopy measurements showed that the resulting particles exhibited an average diameter of 4.8 ± 0.6 nm, and the crystalline lattices were consistent with graphitic carbons. 13C NMR and FTIR spectroscopic measurements further confirmed the presence of sp2 carbons in the form of aryl and carboxylic/carbonyl moieties. The resulting carbon nanoparticles were found to emit photoluminescence with a quantum yield of approximately 0.43%. Additionally, the emission band energy of the carbon nanoparticle was very similar to that of much smaller carbon nanoparticles obtained from candle soot, suggesting that the photoluminescence might arise from particle surface states, analogous to the behaviors of semiconductor quantum dots with an indirect bandgap. In electrochemical measurements, two pairs of well-defined voltammetric waves were observed, which might be ascribed to the peripheral functiona...
Subfields: Materials Chemistry, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/275e954c4bd94e1675d86c034e06f31969b81ab5
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Citations in the corpus
- Preparation of functionalized water-soluble photoluminescent carbon quantum dots from petroleum coke (2014, background): “7% (Table S1), which is much higher than most CQDs prepared by traditionally chemical oxidation reported in literature [19,24,25].”
- Graphene quantum dots from chemistry to applications (2018, neutral): “formation of carbon-metal nano-composites [61].”