N 掺杂 CuCo 双金属活化过硫酸盐降解左氧氟沙星

摘要：

为探讨N掺杂CuCo双金属催化剂在活化过一硫酸盐(PMS)降解左氧氟沙星(LVF)中的应用，采用球磨法制备了N-Cu、N-Co、N-CuCo等催化剂，通过一系列实验考察不同因素对 LVF 降解效率的影响，结合不同表征方法分析 LVF的去除机制。研究结果表明，N-CuCo 催化剂在催化 PMS 降解 LVF 过程中表现出优异的性能，反应体系在中性和碱性的条件下效果较好,当 pH=7,N-CuCo 投加量为 1.2g/L，PMS浓度为 0.84 mmoI/L, 时LVF 降解效率可达 90.23%,显著高于 N-Cu/PMS(69.79%)和N-Co/PMS(74.82%),表明双金属的协同作用能够有效强化 LVF 的去除效果,此外,通过对·OH、·O^-₂、¹O₂,的生成以及猝灭实验分析,确认·O^-₂是促进 LVF 降解的主要因素。

To investigate the application of N-doped CuCo bimetallic catalyst in the degradation of levofloxacin(LVF) by activated persulfate(PMS), N-Cu, N-Co, N-CuCo and other catalysts were prepared by ball milling method. The effects of different factors on the degradation efficiency of LVF were investigated through a series of experiments, and the removal mechanism of LVF was analyzed combined with different characterization methods, The results showed that N-CuCo catalyst showed excellent performance in the process of catalytic degradation of LVF by PMS, and the reaction system had better effect under neutral and alkaline conditions, When pH=7, N-CuCo dosage was 1.2 g/L and PMS concentration was 0.84 mmol/L, the degradation efficieney of LVF reached 90.23%, which was significantly higher than that of N-Cu/PMS(69.79%) and N-Co/PMS(74.82%), indicating that the synergistic effect of bimetallic can effectively enhance the removal effect of LVF. In addition, the formation and quenching experiments of ·OH,·O^-₂ and ¹O₂ further confirmed that ·O^-₂was the main factor to promote the degradation of LVF.

作者:

李强，周刚，张磊，王春峰，王继钦

Tang Chaozhi，Zhai Zihan，Zhang Yuling， Li Yichen

机构地区：

新乡市生态环境技术中心；浙江省环境工程有限公司；河南师范大学环境学院

引用本文：

李强，周刚，张磊等。N掺杂CuCo 双金属活化过硫酸盐降解左氧氟沙星[J].河南师范大学学报(自然科学版)，2025,53(6) :109-116.(Li Qiang,Zhou Gang,Zhang Lei,et al.N-Doped CuCo bimetallic materials activate persulfate for the degradation of levofloxacin[J].Journal of Henan Normal University(Natural Science Edition) ,2025，53(6):109-116.DOI:10.16366/j.cnki.1000-2367.2024.12.17.0001.)

基金：

河南省重点研发与推广专项；国家自然科学基金

关键词：

双金属催化剂；抗生素；过一硫酸盐；催化剂结构

bimetallic catalyst; antibiotics; peroxymonosulfate; catalyst structure

分类号：

X522

N 掺杂 CuCo 双金属活化过硫酸盐降解左氧氟沙星.pdf