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现代化工  2022, Vol. 42 Issue (1): 206-212,217    DOI: 10.16606/j.cnki.issn0253-4320.2022.01.041
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
双Z型PANI/BiOBr/ZnFe2O4光催化剂在可见光下对有机污染物的光催化降解和氧化还原活性研究
韩琼1, 曹文全1, 朱超1, 张瑞2
1. 中石化广元天然气净化有限公司, 四川 广元 628400;
2. 西南石油大学化学化工学院, 四川 成都 610500
A dual Z-scheme PANI/BiOBr/ZnFe2O4 photocatalyst with excellent photocatalytic redox activity for organic pollutant under visible-light
HAN Qiong1, CAO Wen-quan1, ZHU Chao1, ZHANG Rui2
1. Sinopec Guangyuan Natural Gas Purification Co., Ltd., Guangyuan 628400, China;
2. College of Chemistry & Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
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摘要 采用水热合成方法成功制备了聚苯胺/溴化氧铋/铁酸锌复合光催化剂PANI/BiOBr/ZnFe2O4。利用各种表征技术对样品的晶体结构和形貌进行分析。结果表明,与其他样品相比,PANI/BiOBr/ZnFe2O4复合材料在可见光照射下具有更高的光催化活性,对罗丹明B(RhB)的降解效率最高达到99.26%;同时,该复合材料在可见光下对硝基苯(NB)的还原具有良好的催化活性,转化效率可达87.1%。此外,根据PL谱和电化学阻抗谱(EIS)分析可以得出,PANI/BiOBr/ZnFe2O4复合材料的光催化性能提高可归因于电子空穴对的快速分离和转移。通过紫外-可见DRS光谱、M-S曲线分析、ESR谱和自由基捕获实验,提出了适合该体系的双Z型电子转移机理。
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韩琼
曹文全
朱超
张瑞
关键词:  PANI/BiOBr/ZnFe2O4复合材料  双Z型电荷转移  有机污染物  硝基苯    
Abstract: Polyaniline/bismuth bromide/zinc ferrite (PANI/BiOBr/ZnFe2O4) composite photocatalyst is rationally designed and successfully prepared via a facile hydrothermal synthesis method.The crystal structure and morphology of the samples are analyzed by various characterization techniques.It is shown that PANI/BiOBr/ZnFe2O4 composite photocatalyst exhibits higher photocatalytic activity under visible light irradiation than other samples.The highest degradation efficiency of rhodamine B (RHB) over PANI/BiOBr/ZnFe2O4 can reach 99.26%.Meanwhile,the composite photocatalyst exhibits an excellent catalytic activity for the reduction of nitrobenzene (NB) under visible light,with a conversion efficiency of 87.1%.Additionally,according to PL spectra and electrochemical impedance spectroscopy (EIS) analysis,it can be concluded that the improved photocatalytic performance of PANI/BiOBr/ZnFe2O4 composite can be attributed to the rapid separation and transfer of electron-hole pairs.The dual Z-scheme electron transfer mechanism suitable for this system is proposed by means of UV-Vis DRS spectra,M-S curves analysis,ESR spectra and free radical capture experiments.
Key words:  PANI/BiOBr/ZnFe2O4 composite    dual Z-scheme electric charge transfer    organic pollutants    nitrobenzene
收稿日期:  2021-02-09      修回日期:  2021-11-09           出版日期:  2022-01-20
ZTFLH:  TQ12  
通讯作者:  韩琼(1994-),女,硕士,助理工程师,研究方向为光催化剂的制备及催化性能研究,通讯联系人,1032841867@qq.com。    E-mail:  1032841867@qq.com
引用本文:    
韩琼, 曹文全, 朱超, 张瑞. 双Z型PANI/BiOBr/ZnFe2O4光催化剂在可见光下对有机污染物的光催化降解和氧化还原活性研究[J]. 现代化工, 2022, 42(1): 206-212,217.
HAN Qiong, CAO Wen-quan, ZHU Chao, ZHANG Rui. A dual Z-scheme PANI/BiOBr/ZnFe2O4 photocatalyst with excellent photocatalytic redox activity for organic pollutant under visible-light. Modern Chemical Industry, 2022, 42(1): 206-212,217.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2022.01.041  或          https://www.xdhg.com.cn/CN/Y2022/V42/I1/206
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