School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China.
School of Material Science and Engineering, Hunan University, Changsha, China.
Luminescence. 2024 Sep;39(9):e4872. doi: 10.1002/bio.4872.
A highly water-soluble and fluorescent N,S-doped carbon dots/europium (N,S-CDs/Eu) was successfully synthesized via a secondary hydrothermal method. This involved surface modification of N,S-CDs derived from sunflower stem pith (SSP) with europium ions (Eu) doping. When excited within the range of 400-470 nm, N,S-CDs/Eu exhibited a stable and broad optimal emission wavelength ranging from 505 to 540 nm. Notably, the photoluminescence quantum yield (PLQY) of N,S-CDs/Eu is 31.4%, significantly higher than the 19.5% observed for N,S-CDs. Additionally, by dissolving N,S-CDs/Eu into polyvinyl alcohol (PVA), a uniform fluorescent anti-counterfeiting ink can be prepared. The N,S-CDs/Eu/TiO composite demonstrates excellent photocatalytic degradation ability towards the organic dye methylene blue (MB). N,S-CDs/Eu has potential in the field of fluorescent inks and photocatalysis due to its simple and efficient preparation and excellent properties.
一种高水溶性和荧光性的 N,S 掺杂碳点/铕（N,S-CDs/Eu）通过二次水热法成功合成。该方法涉及用铕离子（Eu）掺杂从向日葵茎髓（SSP）中得到的 N,S-CDs 的表面修饰。在 400-470nm 的范围内激发时，N,S-CDs/Eu 表现出稳定且宽的最佳发射波长范围为 505nm 至 540nm。值得注意的是，N,S-CDs/Eu 的光致发光量子产率（PLQY）为 31.4%，明显高于 N,S-CDs 的 19.5%。此外，通过将 N,S-CDs/Eu 溶解在聚乙烯醇（PVA）中，可以制备出均匀的荧光防伪油墨。N,S-CDs/Eu/TiO 复合材料对有机染料亚甲基蓝（MB）表现出优异的光催化降解能力。由于其简单高效的制备和优异的性能，N,S-CDs/Eu 在荧光油墨和光催化领域具有潜力。
