BiOBr synthesized by alcoholysis precipitation is used in the preparation of BiPO₄/BiOBr composites by adding H₃PO₄. Pristine BiOBr and a series of BiPO₄/BiOBr composites have been successfully synthesized using an entirely room‐temperature production process. X‐ray powder diffraction, scanning electron microscopy, High‐resolution transmission electron microscopy, X‐ray photoelectron spectroscopy, UV–vis absorption spectroscopy were used to investigated the bulk structure, surface morphology, element composition and optical properties of the samples. The degradation effect of different proportions of BiPO₄/BiOBr composites, BiOBr and BiPO₄ on Rhodamine B (RhB) was evaluated under visible LED light irradiation. Compared to pure BiOBr and BiPO₄, the as‐synthesized BiPO₄/BiOBr composites showed enhanced performance, with 30% BiPO₄/BiOBr composite showing the best performance, as it could degrade 95.66% of RhB (100 ml, 15 mg/L) within 120 min. The enhanced photocatalytic activity of BiPO₄/BiOBr was attributed to the heterojunction formation between BiOBr and BiPO₄ and efficient charge separation.

中文翻译：

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BiPO4 / BiOBr光催化剂的异质结在可见光照射下降解若丹明B染料

通过醇解沉淀法合成的BiOBr通过添加H ₃ PO ₄用于BiPO ₄ / BiOBr复合材料的制备。原始的BiOBr和一系列的BiPO ₄ / BiOBr复合材料已通过完全室温的生产过程成功合成。X射线粉末衍射，扫描电子显微镜，高分辨率透射电子显微镜，X射线光电子能谱，紫外可见吸收光谱法被用来研究样品的整体结构，表面形态，元素组成和光学性质。不同比例的BiPO ₄ / BiOBr复合材料，BiOBr和BiPO ₄的降解效果在可见光照射下评估若丹明B（RhB）的发光。与纯BiOBr和BiPO ₄相比，合成后的BiPO ₄ / BiOBr复合材料表现出增强的性能，其中30％BiPO ₄ / BiOBr复合材料表现出最佳性能，因为它可以降解95.66％的RhB（100 ml，15 mg / L） ）在120分钟内。BiPO ₄ / BiOBr的增强的光催化活性归因于BiOBr和BiPO ₄之间的异质结形成和有效的电荷分离。