Fe3O4/CuCo2S4复合物活化过硫酸一氢盐对有机染料的去除作用

Peroxymonosulfate activation over Fe3O4/CuCo2S4 composites for removal of organic dyes

陈晓晗 ¹孙德栋 ¹马红超 ¹宋英博 ¹王国文¹

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作者信息

1. 大连工业大学轻工与化学工程学院,辽宁大连 116034
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摘要

采用水热法制备了Fe3O4/CuCo2S4复合催化剂,利用SEM、XRD、EDS对0.25-Fe3O4/CuCo2S4复合材料的表面形貌和结构进行表征,研究了复合催化剂活化PMS降解染料废水的效能.实验结果显示,在室温条件下,加入200 mg/L PMS、125 mg/L催化剂,20 mg/L RhB在40 min内去除率达到99.5％.自由基淬灭实验表明,Fe3O4/CuCo2S4活化PMS产生的羟基自由基、硫酸根自由基和单线态氧等活性物质均参与了RhB降解过程.回收实验表明,4次循环使用后RhB的降解率仍能达到94.2％,表明Fe3O4/CuCo2S4复合催化剂具有良好的可重复利用性和优异的催化活性,易于回收.Fe3O4/CuCo2S4可用于有机物水污染的处理.

Abstract

Fe3O4/CuCo2S4 composite catalysts were prepared by hydrothermal method.The surface morphology and structure of 0.25-Fe3O4/CuCo2S4 were characterized by SEM,XRD and EDS.The peroxymonosulfate(PMS)activation in degradation performance of organic dyes in wastewater was investigated.The experimental results showed that the removal rate of 20 mg/L RhB reached 99.5％within 40 min by 200 mg/L PMS and 125 mg/L 0.25-Fe3O4/CuCo2S4 at room temperature.Free radical quenching experiments showed that hydroxyl radical,sulfate radical,singlet oxygen active substances generated by PMS activation of Fe3O4/CuCo2S4 were all involved in degradation of RhB.The cycling experiments showed that the degradation rate of RhB can still reach 94.2％after 4 cycles.It is indicated that Fe3O4/CuCo2S4 composite catalysts possess good reusability and excellent catalytic activity,and are easy to recover.Fe3O4/CuCo2S4 can be used for the treatment of organic water pollution.

关键词

非均相催化/过硫酸一氢盐/尖晶石硫化物/四氧化三铁/罗丹明B

Key words

inhomogeneous catalysis/peroxymonosulfate/spinel sulfide/Fe3O4/rhodamine B

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基金项目

国家自然科学基金项目(21875026)

出版年

2024

大连工业大学学报

大连工业大学

大连工业大学学报

影响因子：0.295

ISSN：1674-1404

参考文献量12

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