Single atom Mn anchored on N-doped porous carbon derived from spirulina for catalyzed peroxymonosulfate to degradation of emerging organic pollutants

Chengyun Zhou; Yuntao Liang; Wu Xia; Eydhah Almatrafi; Biao Song; Ziwei Wang; Yuxi Zeng; Yang Yang; Yanan Shang; Chaohai Wang; Guangming Zeng

doi:10.1016/j.jhazmat.2022.129871

Single atom Mn anchored on N-doped porous carbon derived from spirulina for catalyzed peroxymonosulfate to degradation of emerging organic pollutants

J Hazard Mater. 2023 Jan 5:441:129871. doi: 10.1016/j.jhazmat.2022.129871. Epub 2022 Aug 30.

Authors

Chengyun Zhou¹, Yuntao Liang², Wu Xia², Eydhah Almatrafi³, Biao Song², Ziwei Wang², Yuxi Zeng², Yang Yang⁴, Yanan Shang⁵, Chaohai Wang⁶, Guangming Zeng⁷

Affiliations

¹ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Electronic address: zhouchengyun@hnu.edu.cn.
² College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
³ Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
⁴ Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
⁵ Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
⁶ Key Laboratory of New Membrane Materials, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
⁷ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Electronic address: zgming@hnu.edu.cn.

PMID: 36067561
DOI: 10.1016/j.jhazmat.2022.129871

Abstract

Highly efficient single atom catalysts are critical to substantially promote for peroxymonosulfate (PMS) activation to organic pollutant degradation, but it remains a challenge at present. Herein, single atom Mn anchored on N-doped porous carbon (SA-Mn-NSC) was synthesized by ball milling of Mn-doped carbon nitride and spirulina biochar to dominantly activate PMS. The precursor of carbon nitride and spirulina possessed a strong coordinating capability for Mn(II), facilitating the formation of highly dispersed nitrogen-coordinated Mn sites (Mn-N₄). The SA-Mn-NSC catalyst exhibited high activity and stability in the heterogeneous activation of PMS to degrade a wide range of pollutants within 10 min, showing an outstanding degradation rate constant of 0.31 min^-1 in enrofloxacin (ENR) degradation. The high surface density of Mn-N₄ sites and abundant interconnected meso-macro pores were highly favorable for activating PMS to produce ¹O₂ and high-valent manganese (Mn(IV)) for pollutant degradation. This work offers a new pathway of using a low-cost and easily accessible single-atom catalysts (SACs) and could inspire more catalytic oxidation strategies.

Keywords: Enrofloxacin; Peroxymonosulfate activation; Single atom Mn; Spirulina biochar.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon
Catalysis
Enrofloxacin
Environmental Pollutants*
Manganese
Nitriles
Nitrogen
Peroxides
Porosity
Spirulina*

Substances

Environmental Pollutants
Nitriles
Peroxides
peroxymonosulfate
Enrofloxacin
Manganese
cyanogen
Carbon
Nitrogen