Abstract
Bismuth molybdate has three phases α-Bi2MoO6, β-Bi2Mo2O9, and γ- Bi2Mo3O12, each of which has unique properties that distinguish them from each other. Among them, Bi2MoO6 and Bi2Mo3O12 have the most stability. In this research, γ-Bi2MoO6@Bi2Mo2.66W0.34O12 core‒shell nanofibers were deposited on the stainless steel mesh as effective and low‒cost substrate. The co‒axial electrospinning as a simple method was applied to form nanofibers on the substrate. Both of the abovementioned bismuth molybdates contents include different crystal facets, controlling the Red‒Ox properties. α-Bi2MoO6 possesses the vast numbers of oxygen vacancies in Mo–O bonding makes the oxidant {100} crystal facet. Likewise, γ‒Bi2Mo2.66W0.34O12 contains brittle facet of {010} with high concentration of Oxygen vacancies resulted in oxidative capability of the core‒shell composite. The obtained data indicated the key role of OH radical through photocatalytic reactions and a new heterojunction having direct Z‒scheme standing.
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