A flower-like Bi₂WO₆-Bi₂O₃ photocatalyst was prepared by a two-step process, including an ionic liquid-assisted solvothermal step and calcination. The effects of the ionic liquids and calcination on the morphology, property, and photocatalytic performance of Bi₂WO₆-based photocatalysts were studied. The addition of ionic liquids during the preparation of Bi₂WO₆ based-materials lead to increased sizes of photocatalysts and the formation of more petal sheets in the flower-like microspheres. The results of XRD, XPS, and TEM confirm that Bi₂WO₆-Bi₂O₃ photocatalysts formed after the calcination treatment of Bi₂WO₆ photocatalyst in an air atmosphere. The Bi₂WO₆-Bi₂O₃ flower-like photocatalyst exhibits better photocatalytic H₂ production activity than the Bi₂WO₆ photocatalyst. The improved activity of the Bi₂WO₆-Bi₂O₃ photocatalysts was attributed to their enhanced light absorption, increased surface area, matched band structure, and the inhibited recombination of the photogenerated charge carriers.

花状Bi ₂ WO ₆ -Bi ₂ O ₃光催化剂通过离子液体辅助溶剂热和煅烧两步法制备。研究了离子液体和煅烧对Bi ₂ WO ₆基光催化剂的形貌、性质和光催化性能的影响。在制备Bi ₂ WO ₆基材料的过程中加入离子液体导致光催化剂尺寸增加并在花状微球中形成更多花瓣片。XRD、XPS 和 TEM 结果证实 Bi ₂ WO ₆ -Bi ₂ OBi ₂ WO ₆光催化剂在空气气氛中煅烧处理后形成的_3种光催化剂。Bi ₂ WO ₆ -Bi ₂ O ₃花状光催化剂比Bi ₂ WO ₆光催化剂表现出更好的光催化制H ₂活性。Bi ₂ WO ₆ -Bi ₂ O ₃光催化剂的改进活性归因于它们增强的光吸收、增加的表面积、匹配的能带结构和抑制光生电荷载流子的复合。