We synthesized BiVO₄ photocatalysts using a facile solvothermal router and three different mixed solvents, 2-methoxyethanol (MEOH), 1,2-ethanediol (EDOH), and 1,2,3-propanetriol (PTOH) with water, which we then characterized by XRD, XPS, FE-SEM, and UV–vis DRS. The XRD results show that we obtained single-phase monoclinic scheelite (m-s BiVO₄) in the EDOH/water and PTOH/water systems and monoclinic/tetragonal heterostructure BiVO₄ (m-t BiVO₄) in the MEOH and water mixture. m-t BiVO₄ with a monoclinic/tetragonal heterostructure prevents the recombination of photoexcited electron-hole pairs. As such, of the three samples, the m-t BiVO₄ material showed the highest activity in the photodecomposition of rhodamine B.

我们使用方便的溶剂热刻蚀机和三种不同的混合溶剂（水合2-甲氧基乙醇（MEOH），1,2-乙二醇（EDOH）和1,2,3-丙三醇（PTOH））合成了BiVO ₄光催化剂，然后对其进行了表征由XRD，XPS，FE-SEM和UV-vis DRS提供。X射线衍射结果表明，我们在EDOH /水和PTOH /水系统中获得了单相单斜白钨矿（ms BiVO ₄），在MEOH和水的混合物中获得了单斜/四方异质结构BiVO ₄（mt BiVO ₄）。具有单斜/四边形异质结构的BiVO ₄阻止了光激发电子-空穴对的重组。因此，在三个样本中，mt BiVO ₄ 该物质在若丹明B的光分解中显示出最高的活性。