Facile synthesis of Pd-doped Bi₂WO₆ nanoplates used for enhanced visible-light-driven photocatalysis

Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

“…In the morphological analysis, Pd 2+ did not have any influence on the morphology of Bi 2 WO 6 . Further, the surface area calculated from BET analysis was highest for 3% Pd‐Bi 2 WO 6 which is a reason for its better activity compared with other doped samples and pure Bi 2 WO 6 380 . The absorbance peak of RhB progressively moved from 554 to 498 nm during photodegradation over 3% Pd‐doped Bi 2 WO 6 nanoplates.…”

“…Further, the surface area calculated from BET analysis was highest for 3% Pd-Bi 2 WO 6 which is a reason for its better activity compared with other doped samples and pure Bi 2 WO 6 . 380 The absorbance peak of RhB progressively moved from 554 to 498 nm during photodegradation over 3% Pd-doped Bi 2 WO 6 nanoplates. This was because RhB broke down stepwise into a few N-deethylated intermediates and then finally into rhodamine.…”

“…378,379 Pd-doped Bi 2 WO 6 nanoplates were synthesized in variable proportions by a facile hydrothermal method for visible light assister degradation of RhB. 380 Each Pd-doped Bi 2 WO 6 's XRD pattern was correlated with the orthorhombic structure and the Bi 2 WO 6 phase was not affected by the Pd dopant. In the alternately stacked (Bi 2 O 2 ) 2+ layers of the Bi 2 WO 6 crystal structure, the result verified that Pd 2+ ions had replaced Bi 3+ ions, and an oxygen defect had been formed in the Bi 2 WO 6 lattice to ensure charge neutrality.…”

“…Finally, the catalyst was stable for five reaction cycles and the scavenger studies revealed that the active species for the RhB degradation are h + and O 2 •− . 380 In this section, we provided an elaborate discussion of various types of perovskites that have been used extensively in recent years for the photocatalytic degradation of pollutants. These materials provide an excellent scope for future research on tuning the catalytic properties with an aim of sustainability.…”

“…Another Aurivillius perovskite like Bi 2 MoO 6 is Bi 2 WO 6 which has been highly investigated for photocatalytic pollutant removal for a long time 378,379 . Pd‐doped Bi 2 WO 6 nanoplates were synthesized in variable proportions by a facile hydrothermal method for visible light assister degradation of RhB 380 . Each Pd‐doped Bi 2 WO 6 's XRD pattern was correlated with the orthorhombic structure and the Bi 2 WO 6 phase was not affected by the Pd dopant.…”