Abstract
The present work reports the photoelectrocatalytic properties of pyrolyzed molybdenum oxide thin film. Microstructural analysis revealed clustered nanoaggregates. Structural analysis showed a polycrystalline \(\alpha\)-MoO3 phase. The crystallite size, dislocation density, microstrain, and stacking faults were found to be 41.27 nm, 5.87 × 10−4 lines/cm2, 8.41 × 10−4 and 1.78, respectively. The optical bandgap was found to be 3.20 eV. Linear sweep voltammetry measurement in 1 M KOH electrolyte revealed a significant photocurrent density of 992.39 μA/cm2 at a bias of 1.2 V versus Ag/AgCl (1.4 V vs. RHE). The reasonable performance of the device suggests that the rarely deployed spray pyrolysis method is promising for preparing photoactive \(\alpha\)-MoO3 films for photoelectrochemical measurement.
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We are grateful to the staff of the Nano-optoelectronics Research (NOR) Laboratory, Universiti Sains Malaysia, for assisting with the materials characterization for this work.
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PRJ: conceptualization, methodology, investigation, data curation, formal analysis, software, writing—original draft preparation. BY: methodology, writing—reviewing and editing. YY: formal analysis. AAM: writing—reviewing and editing. sia: writing—reviewing and editing. NJT: writing—reviewing and editing. hfc: writing—reviewing and editing. MSS: writing—reviewing and editing. aag: writing—reviewing and editing. ME: writing—reviewing and editing.
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Jubu, P.R., Yusuf, B., Yusof, Y. et al. Photocatalytic properties of molybdenum oxide photoelectrode synthesized by spray pyrolysis method. Opt Quant Electron 55, 643 (2023). https://doi.org/10.1007/s11082-023-04958-8
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DOI: https://doi.org/10.1007/s11082-023-04958-8