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• W4309784211 abstract "Fabricating 3D heteroatom-doped graphene on flexible carbon fiber substrate for biomolecular detection in cancer cell. • Porous doped graphene is self-assembled on flexible carbon fiber at low temperature. • The facile structure promises abundant active sites and fast mass transport paths. • The microelectrode shows favorable electrocatalytic activity for H 2 O 2 detection. • In situ tracking H 2 O 2 generated from breast cancer cells. Balancing electrostatic repulsive force and bonding interactions are the key principles for constructing 3D graphene architecture on single carbon fiber (CF). Herein, we present a simple and facile method to modify 3D porous N, B co-doping graphene on single CF (CF@3D-NBG). In the process, the Ni nanoparticles were deposited on CF and used as a reductant for reducing graphene oxide (GO), promising graphene-wrapped CF at low temperature. Ionic liquids were introduced to prevent re-aggregation of graphene sheets during the reduction process of GO, but also acted as heteroatom sources for doping graphene, which provides high electrical conductivity, numerous doping sites and edges for H 2 O 2 electrocatalysis reduction. It is found that the CF@3D-NBG flexible microelectrodes show a broad linear range from 0.5 μM to 4.25 mM and a low detection limit of 100 nM for H 2 O 2 detection. When applied to track the amount of H 2 O 2 generated from real samples, the sensor exhibits desirable performance in distinguishing cancer cells from normal cells and further assessing the therapeutic effect of antitumor drugs on live cancer cells. Therefore, this study may offer an attractive method for synthesizing advanced graphene-based electrodes with great promise for biosensors." @default.
• W4309784211 created "2022-11-29" @default.
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• W4309784211 date "2023-02-01" @default.
• W4309784211 modified "2023-10-17" @default.
• W4309784211 title "3D heteroatom-doped graphene-wrapped flexible carbon fiber microsensor for real-time hydrogen peroxide detection in live cancer cells" @default.
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• W4309784211 doi "https://doi.org/10.1016/j.apsusc.2022.155655" @default.
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