| Full text | |
| Author(s): |
Silva, Ingrid F.
[1]
;
Teixeira, Ivo F.
[2]
;
Rios, Regiane D. F.
[1]
;
do Nascimento, Gustavo M.
[3]
;
Binatti, Ildefonso
[4]
;
Victoriae, Henrique F. V.
[5]
;
Krambrock, Klaus
[5]
;
Cury, Luiz A.
[5]
;
Teixeira, Ana Paula C.
[1]
;
Stumpf, Humberto O.
[1]
Total Authors: 10
|
| Affiliation: | [1] Univ Fed Minas Gerais, Dept Quim, ICEx, BR-31270901 Belo Horizonte, MG - Brazil
[2] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed ABC, Ctr Ciencias Nat & Humanas CCNH, BR-09210580 Santo Andre, SP - Brazil
[4] Ctr Fed Educ Tecnol Minas Gerais, Dept Quim, BR-30421169 Belo Horizonte, MG - Brazil
[5] Univ Fed Minas Gerais, Dept Fis, ICEx, BR-31270901 Belo Horizonte, MG - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF HAZARDOUS MATERIALS; v. 401, JAN 5 2021. |
| Web of Science Citations: | 5 |
| 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. (AU) | |
| FAPESP's process: | 17/50118-9 - Plasmonic nanoparticles supported on semiconductors and its applications in photocatalysis |
| Grantee: | Ivo Freitas Teixeira |
| Support Opportunities: | Regular Research Grants |