Novel Carbon Dots Based on Pseudomonas aeruginosa for High Selectivity Detection of Cr6+ and Bioimaging Both in vitro and in vivo
| Autor: | Chunting Zhang, Xiaodan Zheng, Yufan Bai, Qian Luo, Junjie Shang, Liguo Xie, Yunlin Wei |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Nano. 17 |
| ISSN: | 1793-7094 1793-2920 |
| DOI: | 10.1142/s1793292022500035 |
| Popis: | Hexavalent chromium (Cr[Formula: see text]), a heavy metal ion, is widely used in a variety of industries, but it is an environmental pollutant and a recognized human carcinogen. Highly selective quantitative detection of Cr[Formula: see text] is important for environmental pollution monitoring and early disease prevention in humans. In this study, nitrogen-containing carbon quantum dots (N-CQDs) were synthesized by hydrothermal carbonization of Pseudomonas aeruginosa and were found to be efficient detectors of Cr[Formula: see text], with a detection limit (LOD) of 0.23 nmol L[Formula: see text](nM). N-CQDs were detectable in plant leaves and onion cells and successfully stained cell membranes and nuclei. Multi-colored images revealed that in Caenorhabditis elegans, N-CQDs entered the digestive tract through ingestion, spared rapidly throughout the body, and were excreted though the anus within 40 min. Synthesis of fluorescent N-CQDs can be exploited to increase the use and a range of applications of bacterial resources. The study methods and results also provide theoretical guidance for future research into the development of bacterial resources. |
| Databáze: | OpenAIRE |
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