静电纺丝法制备木质素碳纳米纤维催化降解盐酸环丙沙星  

Preparation of Lignin Carbon Nanofibers by Electrospinning for Catalytic Degradation of Ciprofloxacin Hydrochloride

作　　者：李玲慧 LI Linghui

机构地区：[1]武汉工程大学化学与环境工程学院,武汉430000

出　　处：《科技创新与应用》2023年第35期46-49,53,共5页Technology Innovation and Application

摘　　要：采用静电纺丝法制备成木质素碳纳米纤维,将碳纳米纤维(LSCNF)与过氧一硫酸盐(PMS)催化降解盐酸环丙沙星(CIP·HCl),通过SEM对碳纳米纤维进行表征,考察不同去除体系、催化剂、PMS的投加量、pH和共存阴离子等因素对CIP·HCl降解效果的影响,并探究该催化剂的重复利用效率。实验结果表明,不同碳化温度的木质素碳纳米纤维可以有效活化PMS降解CIP·HCl,在LSCNF-900催化剂投加量为0.2 g/L、PMS为1.4 g/L的最佳实验条件下,20 mg/L的CIP·HCl在60 min内的降解速率可达96.32%。并且该催化剂还具有良好的稳定性,重复使用5次仍有79.86%的降解率。主要活性氧物种为·OH、·SO4-、1O2,其中·OH、·SO4-起主要作用。Lignin carbon nanofibers were prepared by electrospinning.Carbon nanofibers(LSCNF)and peroxy monosulfate(PMS)were used to catalyze the degradation of ciprofloxacin hydrochloride(CIP·HCl).The carbon nanofibers were characterized by SEM.The effects of different removal systems,catalysts,PMS dosage,pH value and coexisting anions on the degradation of CIP·HCl were investigated,and the reuse efficiency of the catalyst was investigated.The experimental results show that lignin carbon nanofibers with different carbonization temperatures can effectively activate PMS to degrade CIP·HCl.Under the optimal experimental conditions of 0.2g/L LSCNF-900 catalyst and 1.4g/L PMS,the degradation rate of CIP·HCl at 20mg/L could reach 96.32%within 60 min,the degradation rate of CIP·HCl of 20 mg/L in 60 min can reach 96.32%.And the catalyst also has good stability,and the degradation rate is still 79.86%after being reused for five times.The main reactive oxygen species are·OH and·SO4-and 1O2,in which·OH and·SO4-play an important role.

关 键 词：静电纺丝 木质素碳纳米纤维 过氧一硫酸盐(PMS) 催化降解 盐酸环丙沙星 

分 类 号：X703[环境科学与工程—环境工程]