Engineering an enzyme-like catalytic sensor for on-site dual-mode evaluation of total antioxidant capacity
文献类型： 外文期刊
第一作者： Han, Xi mei
作者： Han, Xi mei;Dan, Jie;Chen, Hao qian;Wang, Qian;Luo, Lin pin;Feng, Jian xing;Wang, Tian yu;Wang, Jian long;Zhang, Wentao;Gu, Ying;Sun, Jian
作者机构：
关键词： Fe-MoOx; POD-like activity; Colorimetric assay; Total antioxidant capacity (TAC); Dual-mode detection
期刊名称：MICROCHIMICA ACTA （ 影响因子：5.3； 五年影响因子：5.0 ）
ISSN： 0026-3672
年卷期： 2024 年 191 卷 8 期
页码：
收录情况： SCI
摘要： A novel Fe-MoOx nanozyme, engineered with enhanced peroxidase (POD)-like activity through strategic doping and the creation of oxygen vacancies, is introduced to catalyze the oxidation of TMB with high efficiency. Furthermore, Fe-MoOx is responsive to single electron transfer (SET) and hydrogen atom transfer (HAT) mechanisms related to antioxidants and can serve as a desirable nanozyme for total antioxidant capacity (TAC) determination. The TAC colorimetric platform can reach a low LOD of 0.512 mu M in solution and 24.316 mu M in the smartphone-mediated RGB hydrogel (AA as the standard). As proof of concept, the practical application in real samples was explored. The work paves a promising avenue to design diverse nanozymes for visual on-site inspection of food quality.
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