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http://hdl.handle.net/1843/80327| Type: | Artigo de Periódico |
| Title: | Amoxicillin photodegradation under visible light catalyzed by metal-free carbon nitride: an investigation of the influence of the structural defects |
| Authors: | Ingrid Fernandes Silva Humberto Osório Stumpf Ivo Freitas Teixeira Regiane Débora Fernandes Rios Gustavo Morari do Nascimento Ildefonso Binatti Henrique Fernandes Vieira Victoria Klaus Wilhelm Heinrich Krambrock Luiz Alberto Cury Ana Paula de Carvalho Teixeira |
| Abstract: | Herein, the structural defects of metal-free polymeric carbon nitrides were controlled by making use of different precursors in their syntheses, i.e. melamine (CN-M) and thiourea (CN-T), as well as a 1:1 mixture of them (CN-1M:1 T). By controlling the structural defects, the electronic, morphological and chemical properties were modified. Additionally, the activities of synthesized PCNs were evaluated for amoxicillin photodegradation under visible light irradiation (16 mW cm–2). The results of photocatalytic tests showed that CN-T material has better efficiency (100 % removal within 48 h), which is directly related to the greater number of defects present in its structure with consequent improvement of electron-hole pairs separation efficiency. The CN-T material showed excellent stability with only 13 % decrease in its photocatalytic activity after the third cycle. A mechanism for amoxicillin degradation by CN-T was proposed based on the ESI-MS and the in situ EPR allied with spin trapping method investigations. |
| Subject: | Nitretos Carbono Fotocatálise |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.jhazmat.2020.123713 |
| URI: | http://hdl.handle.net/1843/80327 |
| Issue Date: | 2021 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S030438942031699X |
| metadata.dc.relation.ispartof: | Journal of Hazardous Materials |
| Appears in Collections: | Artigo de Periódico |
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