Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigation on the photocatalytic performance of Ag4P2O7 microcrystals for the degradation of organic pollutants

Full text
Author(s):
Pereira, Wyllamanney da S. [1] ; Gozzo, Cipriano B. [1] ; Longo, Elson [1] ; Leite, Edson R. [1, 2] ; Sczancoski, Julio C. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos UFSCar, Dept Chem, Sao Carlos, SP - Brazil
[2] CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Applied Surface Science; v. 493, p. 1195-1204, NOV 1 2019.
Web of Science Citations: 0
Abstract

The silver-based metal oxides have been considered good photocatalysts for the removal of organic dyes in wastewater treatments. In our knowledge, for the first time, the photoluminescence and photocatalytic properties of silver pyrophosphate (Ag4P2O7) synthesized by the precipitation method have been investigated. The long- and short-range structural ordering was analyzed by means of X-ray diffraction and, Raman and infrared spectroscopies, respectively. The broadband photoluminescence spectrum revealed a typical profile arising from electronic transitions involving intermediary energy levels in the band gap. The photocatalytic efficiency of Ag4P2O7 was monitored for the degradation of rhodamine B and 6G under ultraviolet light irradiation. The reusability and stability of this material as photocatalyst were checked by recycling tests. Different radical scavengers were introduced into reaction medium to detect the main active species involved in the degradation process of rhodamine 6G. Based on our results, a photodegradation mechanism for this synthetic organic dye by using Ag4P2O7 photocatalyst was proposed in detail. (AU)

FAPESP's process: 15/11917-8 - Study of photoluminescent properties and photocatalytic of Ag4P2O7, Ag3-2xNixPO4 and Ag3-2xCuxPO4
Grantee:Wyllamanney da Silva Sczancoski
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 16/23663-3 - Amino acids-stabilized pyrophosphates nanoparticles controlled by self-assembly
Grantee:Wyllamanney da Silva Sczancoski
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
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: 12/14004-5 - Investigation of the photoluminescence and photocatalytic properties of pure and Mn, Cu, and Zn-doped BaWO4 and BaMoO4 powders
Grantee:Júlio César Sczancoski
Support Opportunities: Scholarships in Brazil - Post-Doctoral