CuNiFe LDHs/BiO_(2-x)异质结可见光活化过硫酸盐降解环丙沙星  

Degradation of Ciprofloxacin by CuNiFe LDHs/BiO_(2-x)Heterojunction-activated Peroxymonosulfate Under Visible Light Irradiation

作　　者：党璞 赵亚娟[1] 谢会东[1] 王康康[1] 赵儒霞 DANG Pu;ZHAO Ya-juan;XIE Hui-dong;WANG Kang-kang;ZHAO Ru-xia(School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Power Operation Cent,Chinese Flight Test Establishment,Xi'an 710089,China;Shandong Drug and Food Vocational College,Weihai 264210,China)

机构地区：[1]西安建筑科技大学化学与化工学院,西安710055 [2]中国飞行试验研究院动力运行中心,西安710089 [3]山东医药食品职业学院,威海264210

出　　处：《环境科学》2023年第10期5587-5598,共12页Environmental Science

基　　金：国家自然科学基金项目(51978556);山东省重大科技创新项目(2019JZZY010343)。

摘　　要：采用水热法成功合成了CuNiFe LDHs/BiO_(2-x)复合光催化剂,并在可见光照射下用于活化过硫酸盐(PMS)降解环丙沙星(CIP).由于光催化和PMS活化的协同作用,CIP的去除率高达88.3%.利用XRD、FT-IR、SEM、XPS和UV-Vis DRS等方法对制备的光催化剂进行了表征.确定了CuNiFe LDHs的最佳负载量,并考察了PMS用量、初始pH值和无机阴离子(Cl^(-)、CO_(3)^(2-)和NO_(3)^(-))对降解的影响.电子顺磁共振和自由基捕获实验表明·OH和h^(+)是CIP降解的主要活性物种,并提出了该体系可能的降解机制.Herein,a CuNiFe LDHs/BiO_(2-x)composite photocatalyst was successfully synthesized using a hydrothermal method and applied to activate peroxymonosulfate to degrade ciprofloxacin under visible light irradiation.Owing to the synergistic effect of photocatalysis and PMS activation,a high removal efficiency of CIP up to 88.3%was achieved.The prepared photocatalysts were characterized using XRD,FT-IR,SEM,XPS,UV-Vis DRS,and other methods.The optimal loading amount of CuNiFe LDHs was determined,and the effects of PMS dosage,initial pH value,and inorganic anions(Cl^(-),CO_(3)^(2-),and NO_(3)^(-))on the degradation were investigated.Electron paramagnetic resonance and free radical trapping experiments demonstrated that·OH and h^(+)were the main active species for degrading CIP,and the possible degradation mechanism of the system was proposed.

关 键 词：CuNiFe LDHs/BiO_(2-x) 异质结 光催化 过硫酸盐 高级氧化 环丙沙星(CIP) 

分 类 号：X703.1[环境科学与工程—环境工程]