纳米CuO活化过硫酸盐催化降解氧氟沙星  

CuO Activated Persulfate for Catalytic Degradation of Ofloxacin

作　　者：周自成[1] 徐大伟 张士雨 曲炳硕 罗天琦 范小振[1] ZHOU Zicheng;XU Dawei;ZHANG Shiyu;QU Bingshuo;LUO Tianqi;FAN Xiaozhen(Department of Chemistry and Chemical Engineering,Cangzhou Normal University,Cangzhou 061001,Hebei,China)

机构地区：[1]沧州师范学院化学与化工系,河北沧州061001

出　　处：《矿冶工程》2023年第3期119-123,共5页Mining and Metallurgical Engineering

基　　金：2021年河北省高等学校科学技术研究青年基金项目(QN2021304)。

摘　　要：采用络合沉淀法制备了纳米CuO,并对其结构和形貌进行了表征。将纳米CuO作为过硫酸盐降解氧氟沙星的活化剂,基于活化过硫酸盐高级氧化技术,考察了K_(2)S_(2)O_(8)浓度、水体初始pH值等参数对废水中氧氟沙星降解性能的影响。结果表明,在废水中氧氟沙星浓度10 mg/L、CuO投加量0.003 0 g/L、K_(2)S_(2)O_(8)投加量1.0 mmol/L、废水初始pH=3.5条件下,氧氟沙星降解率为95.6%。自由基捕获实验结果表明,自由基SO_(4)^(-)·和O_(2)^(-)·是实现氧氟沙星催化降解的活性物种,并给出了可能的催化反应机理。A complex precipitation method was adopted to synthesize CuO nanoparticles,and its morphology and structure were characterized.Then,the CuO nanoparticles were taken as the activator in the degradation of ofloxacin with persulfate.Based on the advanced technology of activated persulfate oxidation,the influences of different parameters,including concentration of K2 S2O8 and an initial pH of the ofloxacin solution,on the degradation activity of ofloxacin in the wastewater were investigated.It is found that the degradation rate can reach 95.6%with 10 mg/L of ofloxacin in the wastewater with an initial pH of 3.5,by adding 0.0030 g/L CuO and 1.0 mmol/L K_(2)S_(2)O_(8).The experiments on capturing free radicals show that SO_(4)^(-)·and O_(2)^(-)·are active species for the catalytic degradation of ofloxacin,which is possibly the catalytic reaction mechanism.

关 键 词：CUO 过硫酸盐 氧氟沙星 催化降解 活化剂 

分 类 号：X703[环境科学与工程—环境工程]