Ag–Cu filled nanonets with ultrafine dual-nanozyme active units for neurotransmitter biosensing

Ag and Cu based nanostructures serve as advanced functional materials for biomedical applications, due to their unique properties. Here, we proposed a novel neurotransmitter biosensing method based on Ag–Cu composite nanozyme, synthesized through the soft film plate method. Supported by the soft fil...

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Veröffentlicht in:Biosensors & bioelectronics 2024-04, Vol.250, p.116033-116033, Article 116033
Hauptverfasser: Fan, Lin, Kong, Lijun, Liu, Hao, Zhang, Jiawei, Hu, Mengdi, Fan, Li, Zhu, Hongliang, Yan, Shancheng
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container_title Biosensors & bioelectronics
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creator Fan, Lin
Kong, Lijun
Liu, Hao
Zhang, Jiawei
Hu, Mengdi
Fan, Li
Zhu, Hongliang
Yan, Shancheng
description Ag and Cu based nanostructures serve as advanced functional materials for biomedical applications, due to their unique properties. Here, we proposed a novel neurotransmitter biosensing method based on Ag–Cu composite nanozyme, synthesized through the soft film plate method. Supported by the soft film template, the Ag–Cu nanozymes were stably kept to an ultrafine 2D structure with high monodispersity, which provided a large specific surface area and sufficient binding sites, leading to controllable and improved dual-nanozyme activities over similar-sized mono-Ag and mono-Cu, and up to 4.95 times of natural enzyme-level. The multi-path enzymatic reaction processes catalyzed by Ag–Cu composite nanozymes were firstly theoretically discussed in detail, according to the theoretical redox potential of redox couples in the reaction systems. On this basis, the Ag–Cu filled nanonets based neurotransmitter biosensing is successfully applied in rapid detection for glutathione and dopamine, possessing a linear range of 10∼100 μM and 1–10 μM, and a detection limit of 3.01 μM and 0.29 μM, respectively, which exhibited superior performance for biomedical purposes over most commercially available products in speed and precision.
doi_str_mv 10.1016/j.bios.2024.116033
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title Ag–Cu filled nanonets with ultrafine dual-nanozyme active units for neurotransmitter biosensing
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