ZnO-CeO2 Hollow Nanospheres for Selective Determination of Dopamine and Uric Acid

ZnO-CeO2 hollow nanospheres have been successfully synthesized via the hard templating method, in which CeO2 is used as the support skeleton to avoid ZnO agglomeration. The synthesized ZnO-CeO2 hollow nanospheres possess a large electrochemically active area and high electron transfer owing to the h...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2024-04, Vol.29 (8), p.1786
Main Authors: Zhang, Yaru, Yan, Xiaoxia, Chen, Yifan, Deng, Dongmei, He, Haibo, Lei, Yunyi, Luo, Liqiang
Format: Article
Language:English
Subjects:
Composite materials
Dopamine
dopamine detection
electrochemical sensor
Electrodes
Electrons
High temperature
hollow spheres
Metal oxides
Oxidation
Physiology
Spectrum analysis
Spheres
Uric acid
uric acid detection
ZnO-CeO2
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Summary:ZnO-CeO2 hollow nanospheres have been successfully synthesized via the hard templating method, in which CeO2 is used as the support skeleton to avoid ZnO agglomeration. The synthesized ZnO-CeO2 hollow nanospheres possess a large electrochemically active area and high electron transfer owing to the high specific surface area and synergistic effect of ZnO and CeO2. Due to the above advantages, the resulting ZnO-CeO2 hollow spheres display high sensitivities of 1122.86 μA mM−1 cm−2 and 908.53 μA mM−1 cm−2 under a neutral environment for the selective detection of dopamine and uric acid. The constructed electrochemical sensor shows excellent selectivity, stability and recovery for the selective analysis of dopamine and uric acid in actual samples. This study provides a valuable strategy for the synthesis of ZnO-CeO2 hollow nanospheres via the hard templating method as electrocatalysts for the selective detection of dopamine and uric acid.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29081786