Directional Anchoring of Dual Active Sites for Boosting Electrochemical Nonenzymatic H2O2 Sensing

IF 1.9 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

ChemistrySelect Pub Date : 2025-01-23 DOI:10.1002/slct.202405084

Yaqi Kong, Xinjin Zhang, Chongchao Zhang, Ziyin Yang

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引用次数: 0

Abstract

The efficient construction of active sites is crucial for regulating the electrocatalytic activity of nanomaterials. In this work, nitrogen and ruthenium nanoparticles were anchored onto the inner and outer surfaces of graphene hollow nanospheres (N/GHSs/Ru) via the template method. Notably, the synergistic effect of the superfine Ru nanoparticles and N enhances the electrocatalytic activity of the N/GHSs/Ru nanomaterials, exhibiting excellent electrochemical performance for H₂O₂ detection. N/GHSs/Ru nanomaterials were characterized by transmission electron microscopy (TEM), energy dispersion spectroscopy (EDS), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and X-ray photoelectron spectrometry (XPS). The electrocatalytic reduction of H₂O₂ showed a wide linear range from 0.02 to 5.6 mM, with a high sensitivity of 668.86 µA·mM⁻¹·cm⁻² and a limit of detection as low as 6.41 µM. This work offers a way to construct dual active sites, making N/GHSs/Ru as a promising material for nonenzymatic electrochemical H₂O₂ sensors.

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来源期刊

ChemistrySelect Chemistry-General Chemistry

CiteScore

3.30

自引率

4.80%

发文量

1809

审稿时长

1.6 months

期刊介绍： ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.