Synthesis and photocatalytic performance of Bi2WO6/BiOX (X=Cl, Br, I) composites for RhB degradation under visible light

BiOX (X = Cl, Br, I)/WO3/Polyacrylonitrile Nanofibrous Membranes for Diagnostic X-Ray Shielding and Visible-Light Photocatalysis

“…85-0863) could be found (Figure c). These results evidenced that BiOX (X = Cl, Br, I)/WO 3 composites were successfully prepared on the surface of PAN nanofibers, which are consistent with the literature. − …”

“…The nanostructured heterojunction embedded on the surface of flexible polymeric nanofibers ensured the complete-cycle-available characteristic of the as-prepared materials, that is to say, the nanofibrous membrane with X-ray shielding property could be used as a photocatalyst after the service life of the materials in personal protective garments against diagnostic X-ray. In this work, we developed such an idea to construct the BiOX (X = Cl, Br, I)/WO 3 heterojunction on the surface of flexible polymeric nanofibers through a simple solvothermal and successive ionic layer adsorption and reaction (SILAR) process, as reported in the literature. − BiOX successfully transferred the spectral utilization range of the heterojunction to the visible region, and the SILAR process simplified the preparation conditions of materials and ensures high- Z element loadings. The as-prepared BiOX (X = Cl, Br, I)/WO 3 /PAN nanofibrous membranes could serve as excellent lightweight fillers in X-ray shielding protective garments, and they could be easily recycled and utilized as visible-light catalysts for the treatment of cationic organic pollutants in wastewater after their service life.…”

Construction of a hydrangea-like Bi2WO6/BiOCl composite as a high-performance photocatalyst

“…Abundant defects can be observed on Bi 2 WO 6 nanosheets, which can be considered as the Bi 2 WO 6 /BiOCl hybrid nanostructure based on the same [Bi 2 O 2 ] 2+ layer. 28 From the high-resolution TEM image shown in Fig. 2i, the lattice fringes of 0.311 and 0.273 nm can be ascribed to the (103) lattice plane of Bi 2 WO 6 and the (110) lattice plane of BiOCl, 30 further confirming the hybrid nanostructure of Bi 2 WO 6 and BiOCl.…”

“…The resulting BiOBr/Bi 2 WO 6 composite presents the highest photocatalytic activity among the three different heterojunctions. Among the different Bi 2 WO 6 /BiOX composites, Derikvand et al 28 also confirmed the highest photocatalytic efficiency of Bi 2 WO 6 / BiOBr for the degradation of Rhodamine B (RhB). Tahmasebi et al 31 prepared a Bi 2 WO 6 /BiOCl composite via a one-step hydrothermal reaction, and discussed the effect of HCl concentration on the microstructure and photocatalytic performance.…”

“…Considering the similar crystal structures of Bi 2 WO 6 and BiOCl, a Bi 2 WO 6 /BiOCl heterojunction has been developed to enhance their photocatalytic activity. 28,29 The high photocatalytic performance of a Bi 2 WO 6 /BiOCl heterojunction can be ascribed to the following three aspects: (i) the same [Bi 2 O 2 ] 2+ layer enables lattice matching and the formation of a two-dimensional heterojunction; (ii) the combination of a layered structure strengthens the surface/ interfacial contact to accelerate charge transfer; (iii) the construction of a heterojunction adjusts the band gap to enhance the light absorption capability. Among existing reports, BiOCl/ Bi 2 WO 6 heterojunctions are usually fabricated via a one-step hydrothermal method, or BiOCl is synthesized first, before being loaded with Bi 2 WO 6 .…”