Oxygen-deficient cobalt vanadium oxide nano-planted mesoporous carbon nanofibers for ultrafast lithium-ion capacitors

Journal of Alloys and Compounds, Год журнала: 2023, Номер 962, С. 171037 - 171037

Опубликована: Июнь 20, 2023

Язык: Английский

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Sensitive sensing of Hg(II) based on lattice B and surface F co-doped CeO2: Synergies of catalysis and adsorption brought by doping site engineering

Analytica Chimica Acta, Год журнала: 2023, Номер 1282, С. 341937 - 341937

Опубликована: Окт. 19, 2023

Язык: Английский

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Ultrasensitive Electrochemical Sensor Based on Cr-Doped Coco2o4@Nio2 Hybrid for Precise Simultaneous Detection of Trace Multiple Heavy Metal Ions

Опубликована: Янв. 1, 2025

Most heavy metals pose a threat to ecological systems, making it crucial develop an analytical method simultaneously detect multiple metal ions. In this study, novel electrochemical sensor was fabricated based on Cr-doped CoCo2O4@NiO2 hybrid material for the individual and simultaneous selective detection of nanomolar Pb2+ Cu2+. A CoNi bimetallic metal–organic frameworks (MOF) precursor produced using one-step hydration technique, followed by synthesis through calcination. The results N2 adsorption desorption, along with Scanning electron microscope, revealed that composite exhibited significant specific surface area porous structure, thereby notably enhanced its efficacy in preconcentration characterization valence changes transition ions (Co2+/Co3+ Ni2+/Ni3+) could cyclically catalyze ions, remarkably enhancing performance sensor. addition, Cr doping effectively improved conductivity catalytic material. Differential pulse anodic stripping voltammetry employed investigate ability CoCo2O4@NiO2/GCE Cu2+, both individually simultaneously. established sensing approach detected Cu2+ limits 9.6 11.8 nM, respectively. Moreover, also used environmental food samples. proposed analysis has great potential quantitative analyses monitoring safety fields.

Язык: Английский

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Synergistic adsorption and valence cycles effects of NiO@Co3O4 hollow flower-like heterojunction for efficient electroanalysis of Pb(II)

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 112759 - 112759

Опубликована: Янв. 1, 2025

Язык: Английский

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Electrochemical environmental sensors based on La-doped zeolitic imidazolate framework-67 functionalized with L-cysteine for simultaneous detection of Cd2+ and Hg2+

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 162549 - 162549

Опубликована: Янв. 1, 2025

Язык: Английский

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