1 research outputs found
Hydrothermal Synthesis of Novel Uniform Nanooctahedral Bi<sub>3</sub>(FeO<sub>4</sub>)(WO<sub>4</sub>)<sub>2</sub> Solid Oxide and Visible-Light Photocatalytic Performance
For the first time, novel single-phase
octahedral Bi<sub>3</sub>(FeO<sub>4</sub>)Â(WO<sub>4</sub>)<sub>2</sub> (BFW) nanocrystals,
as a visible-light-induced catalyst, had been successfully synthesized
in a facile alkaline hydrothermal way without using any template.
Scanning electron microscopy (SEM) images clearly show single crystals
of BFW with regular octahedral morphology. The formation of the single-phase
BFW compound was recorded using an X-ray diffraction (XRD) technique.
The optical property of BFW was investigated using ultraviolet–visible
light (UV-vis) spectra. The band-gap energy of BFW was revealed to
be 1.98 eV. More importantly, the interfacial interaction of W<sup>6+</sup> ions substituted by Fe<sup>3+</sup> ions was confirmed.
Moreover, the present study pointed out the positions of the valence
band and the conduction band. Compared with the Bi<sub>2</sub>WO<sub>6</sub> (BW) sample, BFW exhibited superior photocatalytic degradation
activity of the Rhodamine B (RhB) under visible-light irradiation.
A trapping experiment was conducted to further illustrate that hydroxyl
radicals (•OH) played a distinct role among active species
during the photodegradation of RhB