【作者】 张一兵； 黄亦聪；

【Author】 ZHANG Yi-bing,HUANG Yi-cong (Shangrao Normal University,Shangrao Jiangxi 334001)

【机构】 江西上饶师范学院；

【摘要】 在三种晶型的TiO₂纳米材料中锐钛矿型的TiO₂拥有最好的光催化活性。在一定条件下用水热法制备了的掺Fe（Ⅲ）TiO₂晶体,XRD分析结果表明它是锐钛矿型TiO₂（A-TiO₂）。研究了以自制的掺Fe（Ⅲ）A-TiO₂为光催化剂对罗丹明B溶液的降解,结果表明,在5mg/L的罗丹明B溶液中,加入0.1650 g自制的掺Fe（Ⅲ）5%的A-TiO₂,用硝酸调节溶液PH=5后,经可见光照射下,43℃恒温磁力快速搅拌反应6 h,降解率达到97%;同样条件下在254nm紫外光下照射4h,降解率达到94.4%。更多还原

【Abstract】 The anatase TiO₂（A-TiO₂） has the best catalytic activity in their three crystallographic forms. The Fe（Ⅲ）-doped TiO₂ cystalrs prepared via hydrothermal method is the anatase type by XRD characterizing,and the degeneration of Rhoda mine B photocatalyzed by as-prepared Fe（Ⅲ）-doped A-TiO₂ was studied.The results of photocatalysis show that the best degeneration rate of Rhoda mine B is 97%under follow conditions:adding as-prepared 0.1650g 5%（mole ratio） as Fe（Ⅲ）-doped A-TiO₂ into the 5mg/L Rhoda mine B solution which adjusted by nitric acid until its PH get to 5,then illuminated by VIS（λ=254nm）,stirring quickly at 43℃for 6h.and the best degeneration rate of Rhoda mine B is 94.4% at the same condition but illuminated by UV（λ=254 nm）,at the same condition。.更多还原