| Full text | |
| Author(s): |
de Souza, Bruna G.
[1, 2]
;
Figueira, Gustavo
[3]
;
Carvalho, Maria H.
[4]
;
Alcaraz-Gonzalez, Victor
[5]
;
Saldana-Flores, Karla E.
[5]
;
Godinho Jr, Mario
;
de Oliveira, Adilson J. A.
[4]
;
Kiminami, Ruth H. G. A.
[3]
;
Ruotolo, Luis A. M.
[2]
;
Urquieta-Gonzalez, Ernesto A.
[1, 2]
Total Authors: 10
|
| Affiliation: | [1] Univ Fed Sao Carlos, Res Ctr Adv Mat & Energy, C Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem Engn, C Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, C Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Fed Sao Carlos, Dept Phys, C Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[5] Univ Guadalajara CUCEI, Blvd Marcelino G Barragan 1421, Guadalajara 44430, Jalisco - Mexico
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Materials Chemistry and Physics; v. 257, JAN 1 2021. |
| Web of Science Citations: | 3 |
| Abstract | |
A novel unconventional coprecipitation procedure (UCP) followed by a simple and fast microwave-assisted hydrothermal (MAH) treatment was used to synthesize a new nanocrystalline magnetic cobalt ferrite (CoFe2O4/MAH) with photo-Fenton activity. The Co-ferrite nanoparticles were obtained at room temperature in the absence of surfactants and their photo-Fenton activity was evaluated through lignin degradation. It was found that microwave hydrothermal treatment is mandatory to obtain magnetic and photoactive Co-ferrite. According to XRD Rietveld refinements and FTIR, the photoactivity was mainly attributed to the Co2+ cation migration from octahedral to tetrahedral sites in the ferrite structure during the MAH treatment, leading, consequently, to a higher Fe3+ incorporation at octahedral sites, which strongly participate in the photo-Fenton degradation mechanism. The magnetic property of the CoFe2O4/MAH ferrite nanoparticles was confirmed by magnetometry and provided an easy catalyst separation. (AU) | |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 17/13769-1 - Multiferroic and ferroelectric materials for energy converters: synthesis, properties, phenomenology and applications |
| Grantee: | José Antonio Eiras |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/24995-2 - Magnetism in multifunctional materials |
| Grantee: | Adilson Jesus Aparecido de Oliveira |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 09/54082-2 - Acquisition of a vibranting sample magnetometer coupled with a superconducting quantum interference device assensor (Squid-VSM) with cryogenic closed cycle |
| Grantee: | Ernesto Chaves Pereira de Souza |
| Support Opportunities: | Multi-user Equipment Program |