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Peroxymonosulfate as inducer driving interfacial electron donation of pollutants over oxygen-rich carbon-nitrogen graphene-like nanosheets for water treatment.
J Colloid Interface Sci. 2022 Sep 15; 622:272-283.JC

Abstract

Herein, a novel metal-free catalyst consisting of multiporous oxygen-rich carbon-nitrogen graphene-like nanosheets (OLAA-CN NSs) is first developed through a staged temperature-programmed calcination of l-ascorbic acid (LAA)-modified dicyandiamide precursor. It is found that the oxygen species from l-ascorbic acid (OLAA) are introduced into the graphene-like basic matrix and replace partial N atoms to form the COC-R structure, leading to the non-uniform distribution of electrons on the catalyst surface, and the formation of electron-rich centers around the COC microareas according to a series of characterization techniques. As a result, OLAA-CN NSs exhibits excellent performance for refractory pollutant removal in the presence of peroxymonosulfate (PMS) and dissolved oxygen. Some pollutants with complex structures are even completely degraded within only 1 min. The interface reaction mechanism is further revealed that PMS mainly acts as an active inducer to drive the electron donation of pollutants over OLAA-CN NSs. These electrons are finally utilized by dissolved oxygen to generate reactive oxygen species (ROS) through the interface process. This reaction system results in pollutants that can either be cleaved directly by surface oxidation process or degraded by the attack of the generated ROS, such as singlet oxygen (1O2) and superoxide radicals (O2•-), through oxygen activation, which significantly reduces the resource and energy consumption in advanced wastewater treatment by harnessing the energy of pollutants and dissolved oxygen in the water.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China.

Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China; Institute of Rural Revitalization, Guangzhou University, Guangzhou 510006, China. Electronic address: lyulai@gzhu.edu.cn.

MeSH

Ascorbic AcidCarbonElectronsEnvironmental PollutantsGraphiteNitrogenOxygenPeroxidesReactive Oxygen SpeciesWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

35512591

Citation

Li, Chenwei, et al. "Peroxymonosulfate as Inducer Driving Interfacial Electron Donation of Pollutants Over Oxygen-rich Carbon-nitrogen Graphene-like Nanosheets for Water Treatment." Journal of Colloid and Interface Science, vol. 622, 2022, pp. 272-283.

Li C, Cai X, Fang Q, et al. Peroxymonosulfate as inducer driving interfacial electron donation of pollutants over oxygen-rich carbon-nitrogen graphene-like nanosheets for water treatment. J Colloid Interface Sci. 2022;622:272-283.

Li, C., Cai, X., Fang, Q., Luo, Y., Zhang, P., Lu, C., Han, M., Hu, C., & Lyu, L. (2022). Peroxymonosulfate as inducer driving interfacial electron donation of pollutants over oxygen-rich carbon-nitrogen graphene-like nanosheets for water treatment. Journal of Colloid and Interface Science, 622, 272-283. https://doi.org/10.1016/j.jcis.2022.04.083

Li C, et al. Peroxymonosulfate as Inducer Driving Interfacial Electron Donation of Pollutants Over Oxygen-rich Carbon-nitrogen Graphene-like Nanosheets for Water Treatment. J Colloid Interface Sci. 2022 Sep 15;622:272-283. PubMed PMID: 35512591.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Peroxymonosulfate as inducer driving interfacial electron donation of pollutants over oxygen-rich carbon-nitrogen graphene-like nanosheets for water treatment. AU - Li,Chenwei, AU - Cai,Xuanying, AU - Fang,Qian, AU - Luo,Yongxiang, AU - Zhang,Peng, AU - Lu,Chao, AU - Han,Muen, AU - Hu,Chun, AU - Lyu,Lai, Y1 - 2022/04/20/ PY - 2021/11/30/received PY - 2022/04/12/revised PY - 2022/04/13/accepted PY - 2022/5/6/pubmed PY - 2022/6/22/medline PY - 2022/5/5/entrez KW - Dual reaction centers KW - Electron donation of pollutants KW - Oxygen activation KW - Peroxymonosulfate inducer KW - Wastewater treatment SP - 272 EP - 283 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 622 N2 - Herein, a novel metal-free catalyst consisting of multiporous oxygen-rich carbon-nitrogen graphene-like nanosheets (OLAA-CN NSs) is first developed through a staged temperature-programmed calcination of l-ascorbic acid (LAA)-modified dicyandiamide precursor. It is found that the oxygen species from l-ascorbic acid (OLAA) are introduced into the graphene-like basic matrix and replace partial N atoms to form the COC-R structure, leading to the non-uniform distribution of electrons on the catalyst surface, and the formation of electron-rich centers around the COC microareas according to a series of characterization techniques. As a result, OLAA-CN NSs exhibits excellent performance for refractory pollutant removal in the presence of peroxymonosulfate (PMS) and dissolved oxygen. Some pollutants with complex structures are even completely degraded within only 1 min. The interface reaction mechanism is further revealed that PMS mainly acts as an active inducer to drive the electron donation of pollutants over OLAA-CN NSs. These electrons are finally utilized by dissolved oxygen to generate reactive oxygen species (ROS) through the interface process. This reaction system results in pollutants that can either be cleaved directly by surface oxidation process or degraded by the attack of the generated ROS, such as singlet oxygen (1O2) and superoxide radicals (O2•-), through oxygen activation, which significantly reduces the resource and energy consumption in advanced wastewater treatment by harnessing the energy of pollutants and dissolved oxygen in the water. SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/35512591/Peroxymonosulfate_as_inducer_driving_interfacial_electron_donation_of_pollutants_over_oxygen_rich_carbon_nitrogen_graphene_like_nanosheets_for_water_treatment_ DB - PRIME DP - Unbound Medicine ER -