化工环保2025，Vol.45Issue(2)：225-233,9.DOI:10.3969/j.issn.1006-1878.2025.02.009
纳米尖晶石NiCo2O4活化过一硫酸盐降解甲硝唑
Activation of peroxymonosulfate by nano spinel NiCo2O4 for metronidazole degradation
摘要
Abstract
Nano spinel NiCo2O4 was prepared by a precipitation-calcination method and used as a heterogeneous catalyst to activate peroxymonosulfate(PMS)to degrade metronidazole(MNZ).The characterization results reveal that NiCo2O4 has a typical spinel structure,nanoparticle size(20-30 nm),large specific surface area(164.93 m2/g),and abundant mesoporous structure(pore size of 5.538 nm).The experimental results indicate that under the conditions of 0.20 g/L NiCo2O4,0.30 g/L PMS,initial pH of MNZ solution of 6.5(unadjusted),and reaction temperature of 30℃,the degradation rate of 10 mg/L MNZ reaches 99.8%after 10 min,and the utilization rate of PMS is 67.8%.The reaction rate constant is 0.623 2 min-1,which is much higher than 0.006 9 min-1 of single PMS systems.SO4-·plays a leading role in the degradation of MNZ.Under the same conditions,the degradation rates of lomefloxacin,levofloxacin,carbamazepine,and rhodamine B in NiCo2O4-activated PMS system are 91.2%,95.8%,82.3%,and 100%,respectively.关键词
NiCo2O4纳米催化剂/过一硫酸盐/甲硝唑/高级氧化技术Key words
NiCo2O4 nanocatalyst/peroxymonosulfate/metronidazole/advanced oxidation process分类
环境科学引用本文复制引用
程韵然,杨晓婷,郑芯靓,杨利红,李庆永..纳米尖晶石NiCo2O4活化过一硫酸盐降解甲硝唑[J].化工环保,2025,45(2):225-233,9.基金项目
广东省普通高校青年创新人才项目(2024KQNCX116) （2024KQNCX116）
广东石油化工学院人才引进项目(2022rcyj2007) （2022rcyj2007）
国家级大学生创新训练计划项目(24A029,24A030). （24A029,24A030）
