福建师范大学学报（自然科学版）2017，Vol.33Issue(2)：73-78,6.DOI:10.12046/j.issn.1000-5277.2017.02.012
Mn掺杂TiO2可见光催化降解水中Microcystin-LR
Visible-light Photocatalytic Performance for the Degradation of Microcystin-LR in Water with Mn Doped TiO2 Nanomaterial
摘要
Abstract
The effect of visible-light photocatalytic degradation of Microcystin-LR in water with Mn doped TiO2 nanomaterial photocatalyst synthesized by a sol-gel method,and their reation dynamic mechanism was researched in this paper.The results showed that,with the increase of MC-LR initial concentration in water,the reaction rate was decreasing.A degradation rate was achieved almost 100％,and mineralization rate 50.87％,after 12 h with 0.2 g · L-1 of Mn-TiO2 when the initial concentration of MC-LR is 0.1 mg · L-1.The photocatalytic degradation process followed pseudo-first order kinetics withthe reaction rate constant of 0.132 0 h-1,as well as the mineralization rate constant of 0.047 5 h-1.FT-IR analysis confirmed that,the MC-LR photocatalysis process was the synergy of adsorption and chemical oxidation degradation.The visible-light photocatalytic degradation of Microcystin-LR in water with Mn doped TiO2 nanomaterial photocatalyst can become an high efficiency and energy saving new method.关键词
Mn掺杂/TiO2/可见光催化/矿化/MC-LRKey words
Mn-doped/TiO2/visible-light photocatalysis/mineralization/Microcystin-LR分类
资源环境引用本文复制引用
王菲凤..Mn掺杂TiO2可见光催化降解水中Microcystin-LR[J].福建师范大学学报（自然科学版）,2017,33(2):73-78,6.基金项目
福建省科技厅高校产学研课题(2016Y4002) （2016Y4002）
福建省科技重大专项专题(2015YZ0001-1) （2015YZ0001-1）
