Ag2S-ZnO--an efficient photocatalyst for the mineralization of Acid Black 1 with UV light.
Spectrochim Acta A Mol Biomol Spectrosc
; 105: 314-9, 2013 Mar 15.
Article
en En
| MEDLINE
| ID: mdl-23318775
The Ag(2)S loaded ZnO (Ag(2)S-ZnO) was successfully synthesized by precipitation of zinc oxalate and Ag(2)S and calcination of the mixed precipitate at 400 °C for 12 h. The catalyst was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) images, energy dispersive spectra (EDS), diffuse reflectance spectra (DRS) photoluminescence spectra (PL) and BET surface area measurements. The photocatalytic activity of Ag(2)S-ZnO was investigated for the degradation of Acid Black (AB 1) in aqueous solution using UV light. Ag(2)S-ZnO is found to be more efficient than commercial ZnO, prepared ZnO and TiO(2)-P25 at pH 9 for the mineralization of Acid Black 1. The effects of operational parameters such as the amount of photocatalyst, dye concentration, initial pH on photo mineralization have been analyzed. Mechanism of degradation by Ag(2)S-ZnO is proposed. The mineralization of Acid Black 1 has also been confirmed by COD measurements. The catalyst is found to be reusable.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óxido de Zinc
/
Compuestos de Plata
/
Colorantes
/
Negro de Almidón
Idioma:
En
Revista:
Spectrochim Acta A Mol Biomol Spectrosc
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2013
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Reino Unido