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Sun J, Liu X, Chen L, Peng L, Peng X, Gan T. Engineering of core−shell Au nanorods@ZIF−8 electrocatalyst for sensitive voltammetric determination of 2−chlorophenol in aquaculture. CAN J CHEM 2022. [DOI: 10.1139/cjc-2021-0326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Herein, polyvinylpyrrolidone−stabilized Au nanorods were controllably implanted into ZIF−8 to form well−uniformed AuNRs@ZIF−8 electrocatalyst with multicore−shell structure. After characterizing the chemical and physical properties, a novel electrochemical sensing platform was fabricated for 2−chlorophenol (2−CP) monitoring based on the AuNRs@ZIF−8 modified glassy carbon electrode. Due to the unique electrochemical property of AuNRs cores and ultra−porous architecture of ZIF−8 shell, the electrocatalyst would effectively accelerate the electron transfer and greatly improve the electrochemical response of 2−CP. Under the optimized experimental conditions, the oxidation peak current of 2−CP enhanced linearly with the increase of its concentration between 0.010 and 40 μM, and the limit of detection was 3.6 nM based on S/N = 3. Meanwhile, the prepared AuNRs@ZIF−8 electrode showed favorable stability, reproducibility, and selectivity, which could be applied to the accurate analysis of 2−CP in aquaculture with standard addition recovery ranging from 96.67% to 104.0%.
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Affiliation(s)
- Junyong Sun
- Xinyang Normal University, 118397, Xingxiang, Henan, China
| | - Xian Liu
- Xinyang Normal University, 118397, Xingxiang, Henan, China
| | - Like Chen
- Xinyang Normal University, 118397, Xingxiang, Henan, China
| | - Lijun Peng
- Hubei Academy of Agricultural Science, Wuhan, China
| | - Xitian Peng
- Hubei Academy of Agricultural Science, Wuhan, China
| | - Tian Gan
- Xinyang Normal University, 118397, Xingxiang, Henan, China
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