Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 413, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125296
Keywords
Nano-clay; Antibiotic; Ratiometric fluorescence; Nano-sensor; Carbon dots
Categories
Funding
- National Natural Science Foundation of China [51773052, U1704241, U1904168]
- Plan for Scientific Innovation Talent of Henan Province [194200510010]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [20HASTIT015, 19HASTIT040]
- Science and Technology Research Project of Henan province [182102310702]
- Plan of Innovative Scientific Research team of Henan University of Technology [T2021-2]
- China Postdoctoral Science Foundation [2018M642748]
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The integration of natural nano-clay and carbon dots has allowed for the real-time and rapid detection of tetracycline with a low detection limit, high accuracy, and the potential for application in food detection and smart devices.
In recent years, the overuse of antibiotics has caused more and more serious environmental pollution, the uncontrolled abuse of antibiotics makes bacteria produce resistance to antibiotics faster than the replacement rate of antibiotics themselves, leading to the emergence of super drug-resistant bacteria. Therefore, it is of great practical significance to establish a simple, rapid and sensitive method for the detection of antibiotics. By integrating natural nano-clay (Atta) and carbon dots (CDs), the real-time and rapid visual detection of tetracycline (TC) in the sample can be realized by chromaticity pick-up APP on smartphone. The nano-sensor can detect tetracycline in the concentration between 25 nM and 20 ?M with the detection limit of 8.7 nM. The low detection limit coupled with good accuracy, sensitivity and specificity meets the requirements for the detection of tetracycline in food. More importantly, the test paper and fluorescent stick-like nano-sensor are designed to detect tetracycline by polychromatic fluorescence changes. In addition, a logic gate for semi-quantitative identification of the concentration of tetracycline is designed, which makes it possible for the application of the nano-sensor in the field of smart devices.
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