【摘要】 针对氮、钒单掺杂对二氧化钛改性的优势,利用溶剂热法重点研究了氮、钒共掺杂对TiO2光催化性能的提高。采用X射线衍射、透射电镜和紫外-可见吸收光谱表征了掺杂TiO2催化剂的物相、尺寸及光吸收性质。实验结果表明,当Ti∶N∶V的摩尔比达到1∶1∶16%时试样在紫外区和可见光区的吸收强度最佳,亚甲基蓝在紫外灯照射30 min后的降解率可达91.7%。更多还原

【Abstract】 In allusion to the advantage of the N/V doping for titania,the improvement of TiO2 photocatalytic performance after modifying with the co-doping of nitrogen and vanadium by the solvothermal method was studied emphasisly.The properties of phase/size/absorbance were characterized by means of X-ray diffraction(XRD),transmission electron microscopy(TEM),UV-vis diffuse reflectance spectroscopy.The results indicate that the absorption intensity of co-doped sample exceeds greatly that of pure one both under UV and visible light region when the mole ratio of Ti,N,V is 1∶1∶16%.91.7% of methylene blue is decomposed in the presence of N/V co-doped titania after irradiation of UV lamp for 30 min.更多还原