Gd和TiO_2共掺杂的WO_3纳米粉体的制备及其光催化性能

The Preparation of Gd and TiO_2 Doping WO_3 and Its Photocatalytic Activity

以Na2WO4和C16H33(CH3)3NBr为原料,通过液相沉淀法制备了WO3纳米粉体,用钛酸胶体溶液浸滞法制备了TiO2掺杂的WO3纳米粉体,再用Gd(NO3)3溶液浸滞TiO2掺杂的WO3纳米粉体法制备了稀土Gd和TiO2共掺杂的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.实验结果表明,稀土Gd和TiO2共掺杂拓展了WO3的光响应范围,提高了对可溶性染料罗丹明B(RB)的吸附作用,使WO3对RB的光催化降解活性和光稳定性得到了显著提高.

Columnar WO3 nanoparticles have been prepared from Na2WO4 and C12H25NH3.Cl via a liquid precipitation process,and Gd and TiO2 Doping WO3 nanoparticles were synthesized by solvent impregnating method with the aqueous solution of Gd(NO3)3 and TiO2 colloid.The obtained samples were characterized by X-ray diffraction,transmission electron microscopy,the UV-vis diffuse reflectance spectrum.Moreover,the samples were employed for degradation of Rhodamine B in aqueous suspension.The results showed that Gd and TiO2 ...