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ZnFe2O4？Fe2O3/PANI复合材料的制备及可见光催化性能
Preparation and Visible-Light Photocatalytic Performance of ZnFe2O4?Fe2O3/PANI Composites

DOI: 10.12677/MS.2015.54026, PP. 191-199

Keywords: 铁酸锌，聚苯胺，化学氧化聚合，光催化剂，磁响应性
Zinc Ferrite, Polyaniline, Chemical Oxidation Polymerization, Photocatalysts, Magnetic Responsibility

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Abstract:

本文采用共沉淀法制备了铁酸锌–氧化铁复合纳米粒子(ZnFe2O4？Fe2O3)，进一步采用紫外光辅助化学氧化聚合法使其与聚苯胺(PANI)复合，制备了复合光催化剂(ZnFe2O4？Fe2O3/PANI)，借助X射线粉末衍射、红外光谱仪、紫外可见分光光度计、扫描电子显微镜、振动样品磁强计对产物进行表征，并研究了苯胺用量对产物的组成、吸收光谱、形貌和光催化性能的影响。结果表明，随苯胺用量的增大，复合物的形貌呈现由小颗粒向大颗粒、至纳米纤维的变化，样品中的PANI含量增大，催化剂对可见光的吸收性能和罗丹明B (RhB)的降解率均增强。经过120 min可见光催化降解，催化剂对RhB的降解效率为75.5%。铁磁性和良好的磁响应性使得ZnFe2O4？Fe2O3/PANI可以被磁铁回收和再利用，在重复使用四次的催化剂对RhB的降解率为64.4%。
The composite nanoparticle consisted of zinc ferrite and hematite (ZnFe2O4？Fe2O3) was prepared through a simple co-precipitation method. Then ZnFe2O4？Fe2O3 was modified with polyaniline (PANI) via UV-assisted chemical oxidation polymerization to fabricate the composite photocatalysts (ZnFe2O4？Fe
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