AgCl/Bi25FeO40复合材料制备及光催化性能

doi:10.12068/j.issn.1005-3026.2022.01.014

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (1): 97-102.DOI: 10.12068/j.issn.1005-3026.2022.01.014

AgCl/Bi₂₅FeO₄₀复合材料制备及光催化性能

尹雯悦，李英华，南瑞斌，李梦茜

)(东北大学资源与土木工程学院，辽宁沈阳110819)

修回日期:2021-03-02 接受日期:2021-03-02 发布日期:2022-01-25
通讯作者: 尹雯悦
作者简介:尹雯悦(1996-)，女，辽宁铁岭人，东北大学硕士研究生; 李英华(1979-)，女，辽宁灯塔人，东北大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2019YFC1803802); 中央高校基本科研业务费专项资金资助项目(N2001016).

Preparation and Photocatalytic Properties of AgCl/Bi₂₅FeO₄₀ Composites

YIN Wen-yue， LI Ying-hua， NAN Rui-bin， LI Meng-xi

School of Resources ＆ Civil Engineering，Northeastern University，Shenyang 110819 ， China.

Revised:2021-03-02 Accepted:2021-03-02 Published:2022-01-25
Contact: LI Ying-hua
About author:-
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摘要/Abstract

摘要： 采用水热-超声化学法制得负载不同质量分数AgCl的AgCl/Bi₂₅FeO₄₀复合材料，通过XRD，SEM-EDS，UV-Vis DRS和PL光谱等表征手段对复合材料的微观形貌、晶相组成、光吸收性能等进行了表征，并进行了光催化降解罗丹明B实验.结果表明，Bi₂₅FeO₄₀呈正立方体结构，直径0.8~10μm，AgCl直径90~130nm，均匀负载在Bi₂₅FeO₄₀上.二者的复合扩宽了光响应范围，提高了Bi₂₅FeO₄₀光催化活性.投加0.1 g AgCl /Bi₂₅FeO₄₀降解100mL质量浓度为15mg/L罗丹明B溶液，当负载的AgCl质量分数为51.48%时，降解效果最佳，75min降解率达到94.4%，90min可以完全降解罗丹明B.此外，对AgCl/Bi₂₅FeO₄₀的降解机理进行了分析，认为h⁺，e^-，H₂O₂，·O^-₂为该光催化体系主要的活性基团，起到降解罗丹明B的作用.

关键词: AgCl;Bi₂₅FeO₄₀;光催化;全光谱;罗丹明B

Abstract: AgCl/Bi₂₅FeO₄₀ composites loaded with different mass fractions of AgCl were prepared by the hydrothermal-sonochemical method. The microstructure， crystal phase composition and optical absorption properties of the composites were characterized by XRD， SEM-EDS， UV-Vis DRS and PL spectra. The photocatalytic degradation of Rhodamine B was also carried out. The results showed that Bi₂₅FeO₄₀was a cubic structure with a diameter of 0.8~10μm. AgCl was uniformly loaded on Bi₂₅FeO₄₀ with a diameter of 90~130nm. The combination of the two materials broadens the photo response range of the single material and improves the photocatalytic activity of Bi₂₅FeO₄₀. 0.1g AgCl/Bi₂₅FeO₄₀ was added to degrade 100mL 15mg/L Rhodamine B solution， when the mass fraction of loaded AgCl was 51.8 %， the degradation rate reached 94.4% in 75 min and Rhodamine B could be completely degraded in 90min. In addition， the degradation mechanism of AgCl /Bi₂₅FeO₄₀ was analyzed. It was considered that h⁺， e^-，H₂O₂ and ·O^-₂ are the main active groups of the photocatalysis system to degrade Rhodamine B.

Key words: AgCl; Bi₂₅FeO₄₀; photocatalysis; full spectrum; Rhodamine B

中图分类号:

尹雯悦，李英华，南瑞斌，李梦茜. AgCl/Bi₂₅FeO₄₀复合材料制备及光催化性能[J]. 东北大学学报（自然科学版）, 2022, 43(1): 97-102.

YIN Wen-yue， LI Ying-hua， NAN Rui-bin， LI Meng-xi. Preparation and Photocatalytic Properties of AgCl/Bi₂₅FeO₄₀ Composites[J]. Journal of Northeastern University(Natural Science), 2022, 43(1): 97-102.

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AgCl/Bi₂₅FeO₄₀复合材料制备及光催化性能

Preparation and Photocatalytic Properties of AgCl/Bi₂₅FeO₄₀ Composites

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