| 具有强吸附与可见光催化活性的类红细胞状Bi3OXy(WO6)1-y(X=Cl、Br、I)固溶体 |
| Erythrocyte-like Bi3OXy(WO6)1-y (X=Cl, Br, I) solid solution with strong adsorption and visible light catalytic activity |
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| 摘要: 采用简单的两步水热法，成功制备了Bi3OXy(WO6)1-y(X=Cl、Br、I)固溶体材料，在改变形貌的同时，增强了吸附与光催化性能。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、紫外可见漫反射光谱(UV-Vis DRS)、X射线光电子能谱(XPS)、光致发光光谱(PL)，对3种复合材料的结构和性质进行了详细的表征，推测了固溶体的形成原理。与BW单体相比，BI固溶体的形成使得带隙减小，可见光吸收能力增强，同时光生电子-空穴的复合率也减小。Bi3OXy(WO6)1-y对于罗丹明B (RhB)阳离子染料具有很强的吸附能力。通过高浓度下的吸附实验，研究了不同材料的吸附动力学。 |
| 关键词: 钨酸铋 卤氧化铋 固溶体 光催化 吸附 |
| 基金项目: 辽宁省教育厅项目(No.LJKMZ20220721)资助。 |
| Abstract: Bi3OXy(WO6)1-y (X=Cl, Br, I) solid solution materials were successfully prepared by a simple two-step hydrothermal method, which enhanced the adsorption and photocatalytic properties while changing the morphology. The structures and properties of the three composites were characterized in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS), X-ray photoelectron spectroscopy (XPS), and photoluminescence spectroscopy (PL). Solid solutions were speculated in principle. Compared to the BW monomer, the formation of the BI solid solution in Bi3OXy(WO6)1-y resulted in a decreased band-gap, which led to an enhanced capacity for absorbing visible light. Furthermore, it helped to reduce the recombination rate of electron-hole pairs generated by light. Bi3OXy(WO6)1-y exhibited a strong adsorption capacity for rhodamine B (RhB) cationic dye. Adsorption kinetics of different materials were investigated through adsorption experiments conducted at high concentrations. |
| Keywords: bismuth tungstate bismuth oxide halide solid solution photocatalysis adsorption |
| 投稿时间：2023-06-07 修订日期：2023-10-18 |
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