CoMn@AC活化过一硫酸氢盐降解水中罗丹明B

李向奎; 肖河; 游少鸿; 何慧军; 李洁月; 黄宏伟; 俞果; 蒋萍萍

doi:10.13205/j.hjgc.202204003

CoMn@AC活化过一硫酸氢盐降解水中罗丹明B

doi: 10.13205/j.hjgc.202204003

李向奎¹,
肖河^1, ,,
游少鸿¹,
何慧军¹,
李洁月^1,2,
黄宏伟¹,
俞果^1,2,
蒋萍萍^1,2

1. 桂林理工大学环境科学与工程学院, 广西桂林 541004;
2. 广西环境污染控制理论与技术重点实验室, 广西桂林 541004

基金项目:

广西中青年教师基础能力提升项目(2020KY06036)

广西青年科学基金项目(2020GXNSFBA159040)

国家重点研发计划(2018YFD0800704)

详细信息

作者简介:
李向奎(1995-),男,硕士研究生,主要研究方向为水污染控制。lxk3773@163.com

通讯作者:
肖河,博士,讲师。xiaohe@glut.edu.cn

计量
- 文章访问数: 172
- HTML全文浏览量: 22
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-02
- 网络出版日期: 2022-07-06

DEGRADATION OF RHODAMINE B IN WATER BY PMS ACTIVATED BY CoMn@AC

1. College of Environment Science and Engineering, Guilin University of Technology, Guilin 541004, China;
2. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China

摘要

摘要: 通过浸渍合成复合催化材料CoMn@AC,用于催化过一硫酸氢盐(PMS)产生自由基对罗丹明B(RhB)进行降解。采用扫描电子显微镜(SEM)、比表面及孔径分析仪(BET)等对其进行表征。考察了催化剂负载量、PMS投加量、pH以及温度等因素对RhB降解的影响。结果表明:当Co负载量为7%且n(Co)∶n(Mn)为5∶1时,合成的复合材料CoMn@AC7-5∶1对100 mL浓度为50 mg/L的RhB降解效果可达到84.2%;在pH为4~10,反应温度为25 ℃,PMS浓度为0.250 mmol/L时,4 h内对RhB的去除率可达84.2%;猝灭研究表明,硫酸根自由基(SO^-₄·)在反应过程中起主要作用;此外,CoMn@AC/PMS体系对RhB的降解效率随温度的升高而显著加快,其降解活化能为29.80 kJ/mol。
- CoMn@AC /
- 过一硫酸氢盐 /
- 罗丹明B /
- 催化活化
Abstract: With Rhodamine B as the target pollutant, the composite catalytic material CoMn@AC was used to catalyze potassium monopersulfate (PMS) to generate SO^-₄· for the degradation of Rhodamine B (RhB). Then the composite material was characterized by scanning electron microscopy (SEM), specific surface and aperture analyzer(BET) and other means. The effects of catalyst loading, PMS dosage, pH and reaction temperature on the RhB degradation efficiency were investigated. The results showed that when the RhB at a concentration of 50 mg/L in 100 mL, the Co loading was 7% and the cobalt-manganese ion molar ratio was 5∶1, the composite material CoMn@AC7-5∶1 had better degradation efficiency; when the pH was in the range of 4~10, the reaction temperature was 25 ℃, and the PMS concentration was 0.250 mmol/L, the target pollutant could be removed effectively. In addition, the degradation of RhB by the CoMn@AC/PMS system accelerated significantly with the increase of temperature, and its degradation activation energy was 29.80 kJ/mol.
- CoMn@AC /
- potassium monopersulfate /
- rhodamine B /
- catalytic activation

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