| Fe3O4硅烷化改性聚合物的制备及可见光光催化性能研究 |
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| 引用本文： | 王艳艳,汪淑廉,贾漫珂,赵小蓉,黄应平.Fe3O4硅烷化改性聚合物的制备及可见光光催化性能研究[J].环境科学学报,2014,34(10):2500-2506. |
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| 作者姓名： | 王艳艳 汪淑廉 贾漫珂 赵小蓉 黄应平 |
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| 作者单位： | 三峡大学三峡库区生态环境教育部工程研究中心;三峡大学三峡地区地质灾害与生态环境湖北省协同创新中心; |
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| 基金项目： | 国家自然科学基金(No.21307073,21377067);中国科学院生态环境研究中心开放基金(No.KF2011-07)~~ |
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| 摘 要： | 利用水热法制备了Fe3O4纳米粒子(Fe3O4NPs),并对其进行改性制备了改性聚合物Fe3O4MMPs.同时,利用X射线衍射(XRD)、扫描电镜(SEM)和紫外可见漫反射(DRS)等手段对所制备的材料进行表征.通过比表面积(BET)测定发现,Fe3O4MMPs的比表面积较Fe3O4NPs增大约9倍.在可见光照射下(λ420 nm),以H2O2为氧化剂,比较研究了以Fe3O4NPs和Fe3O4MMPs为光催化剂降解罗丹明B(Rhodamine,RhB)的催化特性,并探讨了Fe3O4改性对催化活性的影响.结果表明,改性聚合物Fe3O4MMPs的稳定性增加,对底物RhB的降解活性提高,120 min时对RhB的脱色率在98%以上;此外,Fe3O4MMPs对水杨酸(Salicylic Acid,SA)也具有很好的降解效果.利用电子自旋共振技术(ESR)测定氧化物种的结果表明,降解过程涉及羟基自由基(·OH)和超氧自由基(·O-2)氧化机理.
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| 关 键 词： | 改性聚合物FeOMMPs 光催化 机理 |
| 收稿时间： | 2013/12/1 0:00:00 |
| 修稿时间： | 2014/1/23 0:00:00 |
Degradation of toxic organic pollutants by modified Fe3O4 under visible light irradiation |
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| WANG Yanyan,WANG Shulian,JIA Manke,ZHAO Xiaorong and HUANG Yingping.Degradation of toxic organic pollutants by modified Fe3O4 under visible light irradiation[J].Acta Scientiae Circumstantiae,2014,34(10):2500-2506. |
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| Authors: | WANG Yanyan WANG Shulian JIA Manke ZHAO Xiaorong and HUANG Yingping |
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| Institution: | China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002;China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002;China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002;China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002;China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002;Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area,Hubei Province,China Three Gorges University,Yichang 443002 |
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| Abstract: | |
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| Keywords: | modified polymer Fe3O4MMPs|photocatalytic|mechanism |
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