Engineering of core-shell Au nanorods@ZIF-8 electrocatalyst for sensitive voltammetric determination of 2-chlorophenol in aquaculture
文献类型： 外文期刊
作者： Sun, Junyong 1 ; Liu, Xian 3 ; Chen, Like 1 ; Peng, Lijun 3 ; Peng, Xitian 3 ; Gan, Tian 1 ;
作者机构： 1.Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
2.Xinyang Normal Univ, Xinyang Key Lab Funct Nanomat Bioanal, Xinyang 464000, Peoples R China
3.Hubei Acad Agr Sci, Res Inst Agr Qual Stand & Testing Technol, Hubei Key Lab Nutr Qual & Safety Agro Prod, Wuhan 430064, Peoples R China
关键词： Au nanorods; ZIF-8; core-shell structure; 2-chlorophenol; electrochemical determination
期刊名称：CANADIAN JOURNAL OF CHEMISTRY （ 影响因子：1.051； 五年影响因子：1.171 ）
ISSN： 0008-4042
年卷期： 2022 年 100 卷 6 期
页码：
收录情况： SCI
摘要： Herein, polyvinylpyrrolidone-stabilized Au nanorods were controllably implanted into ZIF-8 to form a well-uniformed AuNRs@ZIF-8 electrocatalyst with a 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 mu M, 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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