| Full text | |
| Author(s): |
Costa-Serge, Nayara de M.
;
Goncalves, Rosembergue G. Lima
;
Ramirez-Ubillus, Manuel A.
;
Li, Chan
;
Hammer, Peter
;
Chiron, Serge
;
Nogueira, Raquel F. Pupo
Total Authors: 7
|
| Document type: | Journal article |
| Source: | APPLIED CATALYSIS B-ENVIRONMENTAL; v. 315, p. 12-pg., 2022-05-26. |
| Abstract | |
The influence of the interlamellar anion in Layered Double Hydroxide was investigated for the first time in Fenton-like and solar photo-Fenton processes for the degradation of the anticancer drug 5-fluorouracil (5-FU). LDHs of the MgFeCu type were synthesized by coprecipitation with the insertion of CO32-, NO3- , SO42- and B(OH)4- . A strong effect of the interlamellar anion was observed on the catalytic activity with pseudo-first-order rate constant sequence (k): CuMgFe-B(OH)4 > CuMgFe-NO3 > CuMgFe-SO4 > CuMgFe-CO3. Using CuMgFe-B(OH)4, 5-FU was completely degraded under solar radiation after 20 min and after 40 min in the dark, with degradation efficiency maintained above 90% until the fourth cycle of use. It was found that molecular B-O and B-OH interactions induced modifications of the CuMgFe-B(OH)4 surface charge density, accelerating the reduction of Cu (II) and Fe(III), thus favoring reactive oxygen species generation. This performance denotes the excellent potential of CuMgFe-B(OH)4 for 5-FU degradation. (AU) | |
| FAPESP's process: | 18/17517-0 - Layered double hydroxide as catalysts in heterogeneous photo Fenton process for degradation of drugs present in hospital effluent |
| Grantee: | Nayara de Melo Costa Serge |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 18/12780-4 - Innovative decentralized and low cost treatment systems for optimal urban wastewater management |
| Grantee: | Raquel Fernandes Pupo Nogueira |
| Support Opportunities: | Regular Research Grants |