摘要
采用水热法制备了Fe_(3)O_(4)/CuCo_(2)S_(4)复合催化剂,利用SEM、XRD、EDS对0.25-Fe_(3)O_(4)/CuCo_(2)S_(4)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,Fe_(3)O_(4)/CuCo_(2)S_(4)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Fe_(3)O_(4)/CuCo_(2)S_(4)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。Fe_(3)O_(4)/CuCo_(2)S_(4)可用于有机物水污染的处理。
Fe_(3)O_(4)/CuCo_(2)S_(4)composite catalysts were prepared by hydrothermal method.The surface morphology and structure of 0.25-Fe_(3)O_(4)/CuCo_(2)S_(4)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-Fe_(3)O_(4)/CuCo_(2)S_(4)at room temperature.Free radical quenching experiments showed that hydroxyl radical,sulfate radical,singlet oxygen active substances generated by PMS activation of Fe_(3)O_(4)/CuCo_(2)S_(4)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 Fe_(3)O_(4)/CuCo_(2)S_(4)composite catalysts possess good reusability and excellent catalytic activity,and are easy to recover.Fe_(3)O_(4)/CuCo_(2)S_(4)can be used for the treatment of organic water pollution.
作者
陈晓晗
孙德栋
马红超
宋英博
王国文
CHEN Xiaohan;SUN Dedong;MA Hongchao;SONG Yingbo;WANG Guowen(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)
出处
《大连工业大学学报》
CAS
2024年第1期41-45,共5页
Journal of Dalian Polytechnic University
基金
国家自然科学基金项目(21875026)。
作者简介
陈晓晗(1997-),女,硕士研究生;通信作者:孙德栋(1970-),男,副教授,E-mail:sundedong@sina.com.
