Synthesis of magnetically recoverable visible-light-induced photocatalysts by combination of Fe3O4/ZnO with BiOI and polyaniline  

作　　者：Aziz Habibi-Yangjeh Maryam Shekofteh-Gohari 

机构地区：[1]Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili

出　　处：《Progress in Natural Science:Materials International》2019年第2期145-155,I0003,共12页自然科学进展·国际材料（英文版）

基　　金：University of Mohaghegh Ardabili for financial assistance.

摘　　要：Magnetically recyclable photocatalysts with efficient performances under visible light were synthesized by combining Fe3O4/ZnO with BiOI and polyaniline(PANI). The FT-IR, XRD, HRTEM, SEM, EDX, XPS, UV–vis DRS,VSM, BET, and PL instruments were utilized for characterization of the as-prepared products. The activity tests exhibited that the superior rate constant in photocatalytic performance was achieved over the Fe3O4/ZnO/BiOI/PANI(20%) nanocomposite, which enhanced for more than 59.9, 10.0, and 6.57 times, as compared to those of the Fe3O4/ZnO, Fe3O4/ZnO/PANI, and Fe3O4/ZnO/BiOI photocatalysts in degradation of RhB, respectively.Successful photocatalytic degradations of MO/MB and photo reduction of Cr(VI) were also investigated to confirm the potential application of the photocatalyst in removal of various pollutants. The considerably enhanced activity pointed to a promoting effect of p-n-p heterojunctions formed between PANI, ZnO, and BiOI, and improved textural characteristics, which are benefit for improvement of the photocatalytic performances.Magnetically recyclable photocatalysts with efficient performances under visible light were synthesized by combining Fe3O4/ZnO with BiOI and polyaniline（PANI）. The FT-IR, XRD, HRTEM, SEM, EDX, XPS, UV–vis DRS,VSM, BET, and PL instruments were utilized for characterization of the as-prepared products. The activity tests exhibited that the superior rate constant in photocatalytic performance was achieved over the Fe3O4/ZnO/BiOI/PANI（20%） nanocomposite, which enhanced for more than 59.9, 10.0, and 6.57 times, as compared to those of the Fe3O4/ZnO, Fe3O4/ZnO/PANI, and Fe3O4/ZnO/BiOI photocatalysts in degradation of RhB, respectively.Successful photocatalytic degradations of MO/MB and photo reduction of Cr（VI） were also investigated to confirm the potential application of the photocatalyst in removal of various pollutants. The considerably enhanced activity pointed to a promoting effect of p-n-p heterojunctions formed between PANI, ZnO, and BiOI, and improved textural characteristics, which are benefit for improvement of the photocatalytic performances.

关 键 词：Fe3O4/ZnO/BiOI/PANI Heterojunction MAGNETICALLY recoverable PHOTOCATALYST Visible-light-driven PHOTOCATALYST 

分 类 号：O64[理学—物理化学]