Tailor-made metal oxide/hydroxide core-shell structures are promising for the fabrication of effective electrocatalysts. Here, we report the development of a core-shell structure based on carbondoped and Ni(OH) 2 nanofilms wrapped ZnO microballs (NFsÀ Ni-(OH) 2 /ZnO@C MBs) for glucose and hydrogen peroxide (H 2 O 2 ) monitoring. The unique ball-like morphology of the designed structure is achieved through a facile solvothermal strategy by the control of reaction conditions. Typically, ZnO@C MBs offer highly conductive core, and the shell of Ni(OH) 2 nanofilms increases the density of catalytic active sites. The interesting morphology and the brilliant electrocatalytic efficacy of designed hybrid, encourage us to design a multi-mode sensor for glucose and H 2 O 2 screening. The NFsÀ Ni(OH) 2 /ZnO@C MBs/GCE glucose sensor presented good sensitivities (647.899 & 161.550 μA (mmol L À 1 ) À 1 cm À 2 ), a quick response (< 4 s), lower limit of detection (0.04 μmol L À 1 ), and wide detection range (0.004-1.13 & 1.13-5.02 mmol L À 1 ). Similarly, the same electrode revealed excellent H 2 O 2 sensing features including good sensitivities, two linear parts of 3.5-452 and 452-1374 μmol L À 1 , and detection limit of 0.03 μmol L À 1 as well as high selectivity. Thus, the development of novel hybrid core-shell structure is useful for potential applications in glucose and H 2 O 2 screening from environmental and physiological samples.
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