Efficient Self-cleaning and antibacterial ceramics with active sites fully exposed obtained from rare earth waste.
J Environ Manage
; 366: 121708, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38996598
ABSTRACT
The utilization of rare earth polishing powder waste (RPW) to prepare antibacterial ceramics can effectively avoid problems of pollution in the recycling process and waste of rare earth resources. Herein, a novel RPW-based antibacterial ceramics was developed, which possesses the core-shell structure with ceramics as the cores and the CeO2/BiOCl as the superficial coating. The antibacterial ceramics display notable antibacterial activity, and the inactivation rates of 3.3 log under visible light irradiation in 30 min and 2.4 log under darkness in 1 h were achieved, and the zone of inhibition values was found to be 16.6 mm for E.coil. The hardness of antibacterial ceramics was measured to be 897 (±38) HV, higher than commercial porcelain's hardness (600 HV). The antibacterial mechanism was verified by the Ce ion release, reactive species, and fluorescence-based live/dead cells. This study presents a novel antibacterial ceramic structure and green economic reuse method of rare earth waste.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cerámica
/
Metales de Tierras Raras
/
Antibacterianos
Idioma:
En
Revista:
J Environ Manage
Año:
2024
Tipo del documento:
Article
País de afiliación:
China