In this study, we developed a high-performance non-enzymatic electrochemical sensor based on urchin-like CoP/CuP heterostructured nanorods supported on a three-dimensional porous copper foam, namely, CoP/CuP NRs/CF, for the detection of dopamine. Benefiting from the promising intrinsic catalytic activities of CoP and CuP, urchin-like microsphere structures, and a large electrochemically active surface area for exposing numerous accessible catalytic active sites, the proposed CoP/CuP NRs/CF shows extraordinary electrochemical response towards the electrocatalytic oxidation of dopamine. As a result, the CoP/CuP NRs/CF sensing electrode has a broad detection window (from 0.
View Article and Find Full Text PDFA new catalyst has been developed that utilizes molybdenum oxide (MoO)/nickel molybdenum oxide (NiMoO) heterostructured nanorods coupled with Pt ultrafine nanoparticles for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) toward industrial-grade water splitting. This catalyst has been synthesized using a versatile approach and has shown to perform better than noble-metals catalysts, such as Pt/C and RuO, at industrial-grade current level (≥1000 mA·cm). When used simultaneously as a cathode and anode, the proposed material yields 10 mA·cm at a remarkably small cell voltage of 1.
View Article and Find Full Text PDFThe sensitivity, selectivity, and stability of an electrochemical sensor for detecting small biomolecules can be significantly upgraded through properly controlling the morphology and chemical structure of electrocatalyst. Herein, we fabricated a unique hierarchical nanostructure based on Cu@CuO nanowires (NWs) array uniformly depositing with a layer of gold nanoparticles (2-3 nm) through a simple electroless deposition process. The Au-Cu@CuO NWs hybrid was successfully applied as a novel binder-free self-supported biosensor towards L-cysteine detection with low limit of detection (1.
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