| Full text | |
| Author(s): |
Marques, Gleison N.
;
Reis, Roberta Y. N.
;
Ribeiro, Lara K.
;
Simoes, Luiz G. P.
;
Minozzi, Daniel T.
;
Andres, Juan
;
Assis, Marcelo
;
Mascaro, Lucia H.
;
Longo, Elson
Total Authors: 9
|
| Document type: | Journal article |
| Source: | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 11, n. 5, p. 8-pg., 2023-10-01. |
| Abstract | |
A bovine leather material functionalized with SiO2-Ag nanoparticles (NPs) composite, which possesses highly efficient antimicrobial activity against the SARS-CoV-2 virus and Staphylococcus aureus (S. aureus) bacteria, has been developed. The characterization of this material was conducted using scanning and transmission electron microscopy (SEM and TEM), energy dispersive X-ray spectrometry (EDS), atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), and x-ray photoelectron spectroscopy (XPS). The immobilization of SiO2-AgNPs within the collagen fibers of the leather resulted in surface modification, leading to an increase in material roughness (from 8.93 nm +/- 1.55-12.36 nm +/- 1.76 nm) and the contact angle (from 76 degrees to 81 degrees) of the SiO2-AgNPs coated leather. This functionalized leather exhibited an impressive efficacy of 99.93% against SARSCoV-2% and 99.99% against S. aureus, attributed to the oxidizing properties of the Ag NPs and the enhanced production of reactive oxygen species (ROS). These results highlight that the immobilization of SiO2-AgNPs on the surface of bovine leather is an simple, effective and low-cost strategy for obtaining new surfaces with high antimicrobial activity. (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: | 21/06128-5 - Study of antiviral activity against SARS-CoV-2 OF copper nanoparticles and copper oxide supported in kefiran |
| Grantee: | Gleison Neres Marques |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 21/11326-0 - Study of copper and copper oxide photoelectrodes for wastewater treatment after the COVID-19 pandemic |
| Grantee: | Roberta Yonara Nascimento Reis |
| Support Opportunities: | Scholarships in Brazil - Doctorate |