Pd nanoparticle-modified Bi2WO6 nanoplates used for visible-light-driven photocatalyst

Palladium Nanoparticles Embedded Nutshell-like Bi2WO6 as an Efficient and Stable Visible-Light-Responsive Photocatalysts for NO Removal

“…EIS analysis is presented in the form of Nyquist plots (Figure b), which can reflect the charge carrier’s mobility of Bi 2 WO 6 and Pd (1%)-Bi 2 WO 6 composites. Compared with pure Bi 2 WO 6 , the Pd (1%)-Bi 2 WO 6 composite gives the smaller arc radius on the Nyquist plots, suggesting faster mobility of photogenerated electrons of the Pd (1%)-Bi 2 WO 6 photocatalyst. , The fluorescence decay kinetics indicates that Pd (1%)-Bi 2 WO 6 has a longer mean fluorescence lifetime (Figure c), and the increased mean fluorescence lifetime suggests that the deposition of Pd on the surface of bismuth tungstate could effectively promote the separation of photogenerated electrons and holes, in agreement with the results of steady-state PL. When Bi 2 WO 6 combines with Pd, electrons will migrate from Bi 2 WO 6 with higher Fermi level to Pd with lower Fermi level until their Fermi levels are equal.…”

“…In recent years, metal palladium has gradually received attention due to its high co-catalytic activity, and its modification of semiconductor materials can greatly improve the photocatalytic NO removal activity. For example, Pd-modified TiO 2 , ZnWO 4 , β-Bi 2 O 3 , and C 3 N 4 exhibited higher photocatalytic NO removal activity. − Moreover, Pd-modified Bi 2 WO 6 photocatalysts were applied to toluene/chlorotoluene oxidization, dye degradation, and so forth. − However, to the best of our knowledge, the combination of metal palladium and bismuth tungstate applied to NO removal has not been reported yet, and the corresponding mechanism is lacking.…”

Review on the preparation and performance improvement methods of bismuth photocatalyst materials

“…Bunluesak et al 213 Catalysis Science & Technology Mini review by electrodeposition. The close contact between Bi 2 WO 6 and silver nanoparticles and wire mesh promoted the effective separation of photoexcited charge, and Ag modification broadened the visible light absorption, thus improving the photocatalytic activity.…”

“…Bunluesak et al 213 prepared Pd/Bi 2 WO 6 composites by photoreduction deposition method, and 5% Pd/Bi 2 WO 6 composite photocatalyst showed the best photocatalytic performance. Under visible light irradiation, the degradation rate of RhB reached about 96% within 150 min, while the degradation rate of pure Bi 2 WO 6 was only 29%.…”

Designing “Core–Shell” Insoluble‐SiW11Fe@δ‐Bi2O3 Z‐Scheme Heterojunction for Photo‐Driven Nitrogen Reduction Reaction and Evaluating the Impact of Oxygen toward Nitrogen Reduction

“…The binding energies of 159.1 (Bi4f 7/2 ) and 164.5 eV (Bi4f 5/2 ) with 5.4 eV difference confirm the oxidation state of +3 for Bi in pure δ-Bi 2 O 3 . [56] The emergence of sub-peaks with binding energies of 157.9 (Bi4f 7/2 ) and 163.3 eV (Bi4f 5/2 ) strongly indicates the presence of OVs, which render the apparent oxidation state of +(3−x) [41,[57][58][59] (note: binding energy for metallic Bi(0) locates at 156.93 eV for Bi4f 7/2 ). [60] After forming composites, the binding energies for Bi 3+ reduced by 0.3 eV in Cs 5 SiW 11 Fe@δ-Bi 2 O 3 , and 0.4 eV in Ru 2.5 SiW 11 Fe@δ-Bi 2 O 3 .…”