Abstract
The present report investigates the various MoO3 morphologies prepared via different approaches such as morphologies are cubic sheet, ribbon, and hexagonal sheet. These prepared nanostructures are modified as a MoO3/Ni–F electrode used to detect hydrogen peroxide (H2O2). The influence of the morphology on the microstructural, morphological, electronic state, optical and electrochemical properties of MoO3 nanostructures are systematically studied. The recorded XRD spectra confirmed that the good crystalline nature with the orthorhombic crystal structure. The FESEM analysis shows that preparation approaches strongly influenced the MoO3 morphology. The elemental mapping and XPS analysis confirm the formation of MoO3. The obtained optical band gap values show that the MoO3 morphology-based bandgap values are 3.38, 3.17, and 2.94 eV. The modified MoO3/Ni–F electrode electrochemical impedance spectra show the CP-MoO3 has good conductivity. Moreover, the CP-MoO3/Ni–F electrode has a wide detection window, long-term stability, reproducibility, and a low detection limit is 1.2 μM. Hence, the CP-MoO3/Ni–F electrode electrochemical results suggest that the modified electrode has offered a good matrix for toxic contaminants sensing applications.
•The cubic sheet, ribbon, and hexagonal sheet MoO3 morphologies have prepared via different facile approaches.•The prepared MoO3 nanostructures have formed without disturbing orthorhombic crystal structure.•The modified MoO3/Ni–F electrode shows the has good electrochemical properties.•The CP-MoO3/Ni–F electrode has a wide detection window, long-term stability, reproducibility, and a low detection limit is 1.2 μM.•The electrochemical sensing results suggest that the MoO3/Ni–F electrode is a potential candidate for sensing various pollutants.