电纺丝合成Ag-BiFeO_3复合材料及光催化降解罗丹明B的研究  

The preparation of Ag-BiFeO_3 compound by electrospinning for the photodegradation of RhB

作　　者：周晓玲[1] 钱圣明[1] 张利[1] 涂新满[1] 

机构地区：[1]南昌航空大学环境与化学工程学院,江西南昌330063

出　　处：《江西化工》2013年第1期92-98,共7页Jiangxi Chemical Industry

摘　　要：采用静电纺丝的方法制备BiFeO3纳米纤维,然后将其投入到含AgNO3的溶液中,在紫外光下还原制备成Ag颗粒负载的Ag-BiFeO3复合光催化剂。催化剂的活性通过可见光下对罗丹明B的降解来评价。实验考察了AgNO3的含量、BiFeO3的形态、光还原AgNO3的时间、是否加酒石酸等因素对降解效果的影响。实验结果表明,在酒石酸存在的条件下,将纳米纤维状的BiFeO3投入到含0.0085g的AgNO3的溶液中,紫外光下光还原90min所制备的复合光催化剂的光催化活性最佳。The BiFeO3 nanofibers were prepared by an electrospinning method.,Then the BiFeO3 nanofibers were added to the AgNO3 solution, and photoredueted to Ag particles under the UV - light. The Ag - BiFeO3 compounds would be obtained. The Ag - BiFeO3 compound was used for the photodegradation of RhB. The experimental parameters ,which influence photodegradation of RhB ,such as the dosage of AgNO3 and tartaric acid,the morphology of BiFeO3 ,the time of photoreduction to AgNO3 were optimized. The results showed that the Ag - BiFeO3 compounds have the highest phot℃ atalytie activity under the optimal conditions, which the AgNO3concentration was 0. 01 mol/L, the time of photoreduction was 90min in the presence of tartaric acid.

关 键 词：静电纺丝 Ag—BiFeO3 光催化 罗丹明B 

分 类 号：X703[环境科学与工程—环境工程] O643.32[理学—物理化学]