期刊
OPTICAL MATERIALS
卷 126, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optmat.2022.112156
关键词
Carbon quantum dots; Pelagic Sargassum; Luminescent properties; Microwave assisted synthesis
资金
- CONACyT
- SIP-IPN
- Instituto Politecnico Nacional (IPN, Mexico) [20195500, 20201679, 20210624, 20211381, 20210918]
- CONACyT (Mexico) [1668]
This research compares the structural and luminescent properties of carbon quantum dots (CQDs) synthesized by two different methods and under different conditions. The microwave method achieves better mass yield, while the conventional hydrothermal method generates higher quantum yield. This study helps to further understand and optimize the synthesis process of CQDs.
The synthesis of carbon quantum dots (CQDs) from biomass could be the best application for biopolymeric materials with no further use in industry and that can have environmental effects when disposed of, such as pelagic Sargassum. This research compared the structural and luminescent properties of CQDs synthetized by two different methods (microwave and conventional hydrothermal synthesis) using pelagic Sargassum extract as a carbon source. The microwave method resulted in a better mass yield, while hydrothermal synthesis generated the best quantum yield (QY). Under optimized synthesis conditions, no statistical differences were observed in CQDs size or surface functional groups, as detected by TEM and FTIR analyses respectively. However, crystalline structure and light absorption varied between samples, explaining the higher values of QY observed in the conventional hydrothermal method. This study thus assists in furthering the understanding of the synthesis process, as well as providing supporting evidence for which synthesis methods are better for CDQ synthesis depending on the future uses of these nanoparticles.
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