- Title
- Catalytic transformation of microplastics to functional carbon for catalytic peroxymonosulfate activation: Conversion mechanism and defect of scavenging
- Creator
- Ren, Shiying; Xu, Xin; Zhu, Zhong-Shuai; Yang, Yangyang; Tian, Wenjie; Hu, Kunsheng; Zhong, Shuang; Yi, Jiabao; Duan, Xiaoguang; Wang, Shaobin
- Relation
- ARC.LP200201079 https://purl.org/au-research/grants/arc/LP200201079
- Relation
- Applied Catalysis B: Environmental Vol. 342, Issue March 2024, no. 123410
- Publisher Link
- http://dx.doi.org/10.1016/j.apcatb.2023.123410
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2024
- Description
- 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.
- Subject
- plastics; carbon nanosheets; persulfate activation; pollutant degradation; radical scavengers
- Identifier
- http://hdl.handle.net/1959.13/1500978
- Identifier
- uon:55052
- Identifier
- ISSN:0926-3373
- 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/).
- Language
- eng
- Full Text
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