中文摘要：

以硝酸锰（Mn（NO3）2）为锰源,P25纳米粒子为钛源,采用熔盐法制备掺杂锰的金红石TiO2光催化剂。使用SEM、TEM、XRD、EDS等手段对其形貌、结构、物相进行表征,并以罗丹明B为目标污染物,通过调节Mn的掺杂量,探索Mn的掺杂量对可见光催化降解罗丹明B的影响。结果表明：Mn/Ti原子比为1/50的样品（10-MnTiO2）对罗丹明B降解作用最好,该样品为一维线状结构,结晶度高,且直径分布均一,纵横比高达400以上,其有效催化面积最大。

英文摘要：

Mn-doped rutile TiO_2 photocatalysts were prepared with molten salt synthesis by using Mn（NO_3）_2 as manganese source and P25 nanoparticles as titanium source.The morphology,structure and phase of photocatalyst were characterized by SEM,TEM,XRD and EDS.Rhodamine B was used as a target pollutant.The effects of various Mn doping concentrations on the photodecomposition of Rhodamine B under visible light irradiation were investigated.The results indicate that when the atomic ratio of Mn/Ti is 1∶50（sample 10-Mn-TiO_2）,the degradation of Rhodamine B is the best;the sample shows one-dimensional linear structure,uniform diameter distribution and high degree of crystallinity;the aspect ratio is as high as 400;the effective catalysis area is the largest.