金属
纳米技术
化学
钥匙(锁)
计算机科学
材料科学
有机化学
计算机安全
作者
Shuo Qin,Bin Liu,Yuting Xue,Ruixue Zhao,Guo Wang,Kai Li,Lirong Zheng,Pingyang Wang,Tianhao Tang,Yuan‐Han Yang,Zhengbo Chen,Xia Zuo
出处
期刊:Analytical Methods
[Royal Society of Chemistry]
日期:2024-01-01
卷期号:16 (15): 2292-2300
被引量:2
摘要
Although many excellent nanozymes have been developed, designing and synthesizing highly active nanozymes is still challenging. Here, we developed a metal-based nanozyme (metal = Co, Fe, Cu, Zn) with a three-dimensional network structure. It possesses excellent peroxidase activity and catalyzes the reaction between H2O2 and TMB to produce blue oxTMB, while antioxidants have different reducing power on the oxidation product of TMB (oxTMB), which leads to different absorbance and color changes. Using these color reactions, different nanozymes were used to form a colorimetric sensor array with seven antioxidants, and seven antioxidants were sensitively identified. And the differences between the three nanozymes were compared by density functional theory calculations and enzyme kinetic curve results. In conclusion, the colorimetric sensor array based on metal-based nanozymes provides a good strategy for the identification and detection of antioxidants, which has a broad application prospect.
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