Copper regulation of PtRhRuCu nanozyme targeted boosting peroxidase-like activity for ultrasensitive smartphone-assisted colorimetric sensing of glucose

被引：25

作者：

Zhi, Xinpeng ^{[1
,2
]}

Yang, Qi ^{[2
]}

Zhang, Xinghao ^{[2
]}

Zhang, Hanbo ^{[2
]}

Gao, Ya ^{[2
]}

Zhang, Lulu ^{[2
]}

Tong, Yuping ^{[1
]}

He, Weiwei ^{[2
]}

机构：

[1] North China Univ Water Resources & Elect Power, Sch Civil Engn & Commun, Zhengzhou 450045, Henan, Peoples R China

[2] Xuchang Univ, Inst Surface Micro & Nano Mat, Coll Chem & Mat Engn, Key Lab Micronano Mat Energy Storage & Convers Hen, Xuchang 461000, Henan, Peoples R China

来源：

FOOD CHEMISTRY | 2024年 / 445卷

关键词：

Nanozyme; Quaternary alloy; Peroxidase-like activity; Colorimetric sensing; Smartphone-assisted; Glucose detection; ENZYME-LIKE ACTIVITIES; OXIDASE; GOLD; NANOSTRUCTURES; PLATINUM; SILVER;

D O I：

10.1016/j.foodchem.2024.138788

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Point-of-care testing (POCT) is promising for biodetection in home healthcare due to advantages of simplicity, rapidity, low cost, portability, high sensitivity and accuracy, and object-oriented POCT platform can be developed by nanozyme-based biosensing. However, designing high-performance nanozymes with targeted regulated catalytic activity remains challenging. Herein, advanced PtRhRuCu quaternary alloy nanozymes (QANs) were rationally designed and successfully synthesized. Cu atoms induced mechanisms of hydrogen peroxide (H2O2) activation and d-band center regulation, achieving high enhancement of peroxide (POD)-like activity and inhibition of oxidase (OXD)-like activity. Inspired by this, a smartphone-assisted colorimetric platform integrated with test strips was established for glucose detection of soft drinks, with a detection limit of 0.021 mM and a recovery rate of 97.87 to 103.36 %. This work not only provides a novel path for tuning specific enzyme-like activities of metal nanozymes, but also shows the potential feasibility for rational design of POCT sensors in actual samples.

引用

页数：10

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