Mn^2+/Fe^2+和SO3^2-/Fe^2+均相体系光降解罗丹明B研究  

Study on the photodegradation of RhB by Mn/Fe and SO/Fe homogeneous systems

作　　者：梁宇 任海涛[1] 韩景 李浩[1] 楼静文 Liang Yu;Ren Haitao;Han Jing;Li Hao;Lou Lingwen(Tianjin and Education Ministry Key Laboratory of Advanced Textile Composite Material,School of Textile Science and Engineering,Tianjin Polytechnic University,Tianjin 300387;Department of Bioinformatics and Medical Engineering,Asia University,Taichung 41354,Taiwan,China)

机构地区：[1]天津工业大学教育部与天津市共建先进复合材料重点实验室纺织科学与工程学院,天津300387 [2]亚洲大学生物信息与医学工程学系,中国台中41354

出　　处：《化工新型材料》2020年第11期209-213,共5页New Chemical Materials

基　　金：天津市自然科学基金资助项目(17JCQNJC08000);国家自然基金(21806121、51878449)。

摘　　要：通过构建Mn^2+/Fe^2+和SO3^2-/Fe^2+两种均相光催化体系,并以罗丹明B(RhB)为模拟污染物评价它们的光催化性能。结果表明,SO3^2-的存在会抑制催化体系的催化氧化活性,SO3^2-/Fe^2+体系的速率常数(0.0203min-1)仅为UV/Fe^2+体系(0.0681min-1)的29.81%;而Mn^2+/Fe^2+体系表现出优异的氧化活性,且当溶液pH=4.0,Fe^2+和Mn^2+浓度分别为0.5mmol/L和0.03mmol/L时,RhB降解率达到100%,速率常数为0.1207min-1。此外,清除剂实验表明,Mn^2+/Fe^2+体系活性物质主要为·OH。Photocatalytic systems of Mn^2+/Fe^2+and SO3^2-/Fe^2+were constructed,and their photocatalytic performance was evaluated via the degradation of RhB.Results shown that the presence of SO3^2-inhibited the oxidation activity of the catalytic system,and the rate constant(0.0203min-1)was only 29.81%of the UV/Fe^2+system(0.0681min-1).However,Mn^2+/Fe^2+system exhibited excellent oxidation activity,and the removal percent of RhBreached 100%with rate constant of 0.1207min-1 at pH 4.0when the concentration of Fe^2+and Mn^2+was 0.5mmol/Land 0.03mmol/L,respectively.In addition,the scavenger experiments shown that the main active species of Mn^2+/Fe^2+system was·OH.

关 键 词：FE^2+ MN^2+ SO3^2- 光催化 罗丹明B 

分 类 号：O063.3[理学]