BiPO_(4)/BiOBr复合材料的制备及其光催化性能研究

Synthesis and Photocatalytic Performance of BiPO_(4)/BiOBr Composite Materials

通过反应型离子液体溴化1-十六烷基-3-甲基咪唑([C_(16)min]Br)辅助溶剂热法合成制备不同质量比的BiPO_(4)/BiOBr复合材料。用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、能量色散光谱(EDS)和紫外可见漫反射光谱(UV-Vis DRS)等分析方法对所制样品进行表征。结果表明,BiPO_(4)/BiOBr复合材料比单体样品有更好的光学特性。以罗丹明B(RhB)为目标污染物研究了单体和复合材料的光催化降解性能。结果表明,BiPO_(4)/BiOBr复合材料对罗丹明B(RhB)的降解效果均优于单个样品BiPO_(4)和BiOBr,其中BiPO_(4)/BiOBr(10wt%)复合材料的光催化降解活性最高。

BiPO_(4)/BiOBr composites with different mass ratios were synthesized by reaction ionic liquid bromide 1-dohexadanyl-3-methimidazole([C_(16)min]Br).The samples were characterized by analytical methods such as X-ray diffraction(XRD),X-ray optoelectronic energy spectroscopy(XPS),scanning electronics microscopy(SEM),energy diffusion spectroscopy(EDS)and UV visible diffuse spectroscopy(UV-Vis DRS).The results showed that BiPO_(4)/BiOBr composite material had better optical properties than the monomer sample.Rhodamine B(RhB)was used as the target pollutant to study the photocatalytic degradation performance of monomer and composite materials.The results indicated that the BiPO_(4)/BiOBr composites exhibited significantly enhanced the better photocatalytic activity for rhodamine B(RhB)degradation than the bare BiPO_(4) and BiOBr.BiPO_(4)/BiOBr(10wt%)showed the highest photocatalytic activity under visible light irradiation.