Facile and green synthesis of carbon nanodots from environmental pollutants for cell imaging and Fe3+ detection

作者：Shen, Jialu; Xu, Yanyi; Wang, Zuo; Chen, Weifeng; Zhao, Haiyu^*; Liu, Xiang^*

来源：New Journal of Chemistry, 2022, 46(26): 12581-12588.

DOI：10.1039/d2nj02236b

• GRAPHENE QUANTUM DOTS
• ACID ORANGE 7
• SELECTIVE DETECTION
• FLUORESCENT-PROBE
• LABEL-FREE
• SENSITIVE DETECTION
• NANOSHEETS
• ION
• DEGRADATION
• PERFORMANCE

For the purpose of turning waste into treasure, acid orange 7 (AO7), a commonly used azo dye, has been explored as a precursor to synthesize carbon nanodots (CNDs) by a simple, green and economical route, without the utilization of strong acids or other oxidizers. Detailed characterization of the synthesized CNDs reveals their good water dispersibility, with a mean particle size of 3.54 nm and a thickness of 0.5-1.6 nm (2-4 layers). Importantly, the much-reduced biotoxicity and excellent fluorescence properties of the synthesized CNDs lead to their further potential applications in both bioimaging and selective detection of Fe3+ ions.

• 单位
  兰州大学; 四川大学