Journal
ANALYST
Volume 145, Issue 5, Pages 1943-1949Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9an02575h
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Funding
- National Natural Science Foundation of China [21778047, 21675138, 21705139]
- National Natural Science Foundation of Shandong Province in China [ZR2017BB026]
- Taishan Scholar Project Special Funding [ts20190962]
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A facile and novel method was developed to improve the conductivity of a cyclodextrin-metal organic frameworks (CD-MOFs) by modifying it with Ketjen Black (KB) and platinum nanoparticles (PtNPs). The structural morphology and composition of this PtNPs/KB/CD-MOFs nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, elemental mapping, and Raman spectroscopy. The sensor was then evaluated for its ability to detect ofloxacin using cyclic voltammetry, and the results showed that the PtNPs/KB/CD-MOF had high sensitivity, satisfactory stability and good reproducibility. In addition, a great linear range was obtained with a concentration range of 0.08-100 mu M and a low detection limit of 0.037 mu M (S/N = 3). Therefore, the prepared electrochemical sensor could be successfully used to detect ofloxacin in serum.
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