期刊
FRONTIERS IN CHEMISTRY
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2021.812086
关键词
electrochemical detection; silica nanochannel array film; conductive adhesion layer; ss-cyclodextrin modified reduced graphene oxide; acetaminophen
资金
- National Natural Science Foundation of China [81804215]
- Guangxi Natural Science Foundation [2020GXNSFBA297053]
- Fundamental Research Funds of Zhejiang Sci-Tech University ZSTU [2019Q044]
The study developed an electrochemical sensor for highly sensitive detection of acetaminophen, utilizing a silica nanochannel array film (SNF) and ss-cyclodextrin-graphene (CDG) nanocomposite modified Au film electrode (AuF). The sensor demonstrated a sensitive detection range of acetaminophen and an ultralow limit-of-detection, highlighting the potential for accurate and convenient analysis of acetaminophen in commercial tablets.
Convenient and sensitive detection of active analytes in complex matrix is crucial in biological, medical, and environmental analysis. Silica nanochannel array film (SNF) equipped electrochemical sensors have shown excellent anti-fouling performance in direct analysis of complex samples. In this work, we demonstrated an electrochemical sensor with anti-fouling performance for highly sensitive detection of acetaminophen (APAP) based on SNF supported by ss-cyclodextrin-graphene (CDG) nanocomposite modified Au film electrode (AuF). Because of their rich surface hydroxyls and 2D lamellar structure, CDG on AuF can serve as the nanoadhesive for compact binding SNF, which can be grown by electrochemical assisted self-assembly method in a few seconds. Attributable to the electrocatalytic property of graphene and the synergistic enrichment from both CD and SNF nanochannels towards analyte, the SNF/CDG/AuF sensor demonstrates sensitive detection of acetaminophen ranged from 0.2 to 50 mu M with an ultralow limit-of-detection of 14 nM. Taking advantage of the anti-fouling ability of SNF, the sensor is able to realize accurate and convenient analysis of APAP in commercially available paracetamol tablets.
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