摘要
探索了自制光催化剂掺Fe^(3+)A-TiO_2对水杨酸溶液在一定条件下的降解效果,并寻找最佳优化条件。结果表明:水杨酸起始溶液浓度为50 mg/L,溶液pH为6时(水杨酸自身pH),加入自制的0.21 g/L掺Fe^(3+)(摩尔比)为1.6%的A-TiO_2,室温下(T=18℃)在波长λ=254 nm的紫外光照射下,磁力快速搅拌反应2 h,水杨酸的最大降解率达到35.18%。同上条件下撤去光源进行吸附量测试,发现反应1 h达到吸附平衡。
The photo-catalyzing degradation of salicylic acid on as-prepared Fe^3+ -doping anatase TiO2( i.e.A-TiO2) under UVlight was studied. The effects of initial concentration of salicylic acid,Fe^3+ -doping amount,illumination time and p H on the degradation of salicylic acid were examined. Experiment results show that the degeneration rate of salicylic acid is 35. 18%under follow optimizing conditions: salicylic acid initial concentration 50 mg/L( pH = 6),Fe^3+ -doping A-TiO2 dosage 0.21 g /L,Fe^3+ -doping amount 1.6%( molar fraction),reaction temperature 18℃ and illumination time 2 h under UV- light( λ =254 nm). At the same condition,the adsorption equilibrium is reached for 1 h when removing the light resource.
出处
《上饶师范学院学报》
2016年第6期45-49,共5页
Journal of Shangrao Normal University
基金
教育部第四批高等学校特色专业建设点资助项目(TS11524)
江西省省级精品课程资助项目(赣教高字〔2011〕74号)
江西省级精品资源共享课资助项目(赣教高字〔2015〕79号)
关键词
自制掺Fe3+A-TiO2
光催化
降解
水杨酸
紫外光
吸附平衡
as-prepared Fe3+-doping A-TiO2
photo-catalysis
degradation
salicylic acid
UV-light
adsorption equilibri um