Catalytic transformation of microplastics to functional carbon for catalytic peroxymonosulfate activation: Conversion mechanism and defect of scavenging
Date
2024
Authors
Ren, S.
Xu, X.
Zhu, Z.S.
Yang, Y.
Tian, W.
Hu, K.
Zhong, S.
Yi, J.
Duan, X.
Wang, S.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Applied Catalysis B: Environmental, 2024; 342:123410-1-123410-11
Statement of Responsibility
Shiying Ren, Xin Xu, Zhong-Shuai Zhu, Yangyang Yang, Wenjie Tian, Kunsheng Hu, Shuang Zhong, Jiabao Yi, Xiaoguang Duan, Shaobin Wang
Conference Name
Abstract
Plastic wastes were catalytically transformed into different structured carbons as effective catalysts for peroxymonosulfate activation to degrade organic pollutants in water and the catalytic conversion mechanism was comprehensively investigated. A salt template-based carbonization approach was successfully developed to catalytically converting high-density polyethylene (HDPE) into diverse carbon materials, such as core-shell carbon composites, nanosheets, and their hybrids. The morphology and proportions of structure defective carbon were found to be controlled by a NiCl2 to HDPE ratio. Carbon nanosheets performed excellent catalytic efficiency in peroxymonosulfate activation toward phenol oxidation, due to a high content of reactive defects via a nonradical electron-transfer mechanism. More importantly, deliberate experiment design and kinetic analyses were employed to illustrate the artifact of radical scavengers (e.g., ethanol) in mechanistic investigation for nonradical/radical reaction. This work provides an upcycle approach for waste plastics into carbocatalysts and new insight to the conversion process and advanced water purification.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).