Banca de DEFESA: NIVALDO FREIRE DE ANDRADE NETO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : NIVALDO FREIRE DE ANDRADE NETO
DATA : 16/06/2017
HORA: 09:00
LOCAL: Sala de reuniões do DEMat
TÍTULO:

STUDY OF THE PHOTOCATALITICAL AND ANTIMICROBIAL ACTIVITIES OF AGCl PARTICLES IMPREGNATED WITH WHAT IS OBTAINED BY SONOQUÍMICA SYNTHESIS

PALAVRAS-CHAVES:

Photocatalysis, Particles, AgCl, CuO, Sonochemical.

PÁGINAS: 88
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Cerâmicos
RESUMO:

The growth of industrial activities led to an increase in the generation of effluents, which led environmental agencies to propose the creation of regulatory frameworks to limit the generation of effluents. The effluents generated by the textile industries are difficult to be degraded by traditional methods of treatment. Advanced oxidative processes (POAs) are an efficient alternative for the degradation of organic pollutants such as dyes (methylene blue). In this work, silver chloride particles (AgCl) impregnated with copper oxide (CuO) were synthesized via sonochemistry. AgCl/CuO 1:1 and 2:1 compositions, respectively, were prepared. Such compositions went through three distinct procurement routes. To characterize the particles, X-ray diffraction (XRD), scanning electron microscopy with field emission (SEM-FEG), and UV-visible (UV-vis) spectroscopy were performed. To verify the applicability of the compound were carried out in the samples of AgCl/CuO photocatalytic tests for degradation of the methylene blue dye and the antimicrobial activity against the bacteria Escherichia coli and Staphylococcus aureus. The results of X-ray diffraction confirmed the formation of AgCl and CuO in all samples, with no evidence of doping for any route used. The results of the photocatalytic activity indicate that increasing the ratio of AgCl (1:1 to 2:1) accelerates the degradation of methylene blue on average by 25%.

MEMBROS DA BANCA:
Externo à Instituição - BRAULIO SILVA BARROS - UFPE
Presidente - 1802888 - FABIANA VILLELA DA MOTTA
Externo ao Programa - 1803301 - KATIA NICOLAU MATSUI
Interno - 1883170 - MAURICIO ROBERTO BOMIO DELMONTE