Facile and one-step preparation carbon quantum dots from biomass residue and their applications as efficient surfactants
| Autor: | Jingtao Shi, Zeyu Zhang, Ruibo Ren, Dongxing Gao, Kechao Han, Pinhui Zhao, Ziqiao Yang, Fei Bi |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics food and beverages One-Step 02 engineering and technology 021001 nanoscience & nanotechnology complex mixtures Pickering emulsion Surfaces Coatings and Films Residue (chemistry) 020401 chemical engineering Chemical engineering Carbon quantum dots 0204 chemical engineering Physical and Theoretical Chemistry 0210 nano-technology Luminescence Pyrolysis |
| DOI: | 10.6084/m9.figshare.7951481.v2 |
| Popis: | Using biomass residue as a source of carbon precursors, a pyrolysis method was used to prepare biomass-derived luminescent Carbon Quantum Dots (CQDs). The prepared CQDs exhibited excellent fluorescence and luminescence properties and fluorescence behaviors of CQDs acquired at different pyrolysis temperatures varied. Importantly, the CQDs showed superior surface activity and the styrene-in-water Pickering emulsion prepared using the CQDs as nano-sized surfactant was highly stable: the higher the pyrolysis temperature the better the stability of the emulsion. In addition, there was no stratification found in the emulsion which was stabilized by the CQD500 (CQDs prepared at 500 °C) after holding for 72 hours. This research provided an approach for preparing the surfactants of nano-sized particles in large scale. The CQDs prepared using the proposed methods are expected to have a high number of potential applications. |
| Databáze: | OpenAIRE |
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