【摘要】 以Na2WO4和C12H25NH3.Cl作原料,通过液相沉淀法制备了WO3纳米粉体,再用稀土硝酸铕浸滞法制备了铕掺杂的WO3纳米粉体,并采用透射电子显微镜、紫外-可见漫反射吸收光谱和X-射线衍射对其结构进行了表征.以可溶性染料罗丹明B光催化降解反应为探针反应,考察了铕掺杂的WO3纳米粉体的光催化性能.实验结果表明,铕掺杂能拓展WO3的光响应范围,显著提高WO3对罗丹明B的光催化降解效率和光稳定性.更多还原

【Abstract】 Columnar WO3 nanoparticles have been prepared from Na2WO4 and C12H25NH3.Cl via a liquid precipitation process, and Eu doped WO3 nanoparticles were synthesized by solvent impregnating method with europium nitrate. The obtained samples were characterized by X-ray diffraction,transmission electron microscopy, UV-Vis absorption spectra. Moreover, the samples were employed for degradation of Rhodamine B in aqueous suspension. The results showed that Eu doping enhanced the photocatalytic activity and photostability of WO3 for Rhodamine B degradation.更多还原