Degradação fotocatalítica de atrazina na presença de catalisadores nanoparticulados

Atrazine is a persistent herbicide and several studies have detected their presence in drinking water sources. In this work the atrazine photocatalytic degradation was investigated in aqueous solution using TiO2, ZnO and TiO2/ZnO catalysts. The catalysts were synthesized by Pechini's method and...

Full description

Saved in:

Bibliographic Details
Published in:	Química Nova Vol. 40; no. 1; pp. 36 - 41
Main Authors:	Campos, Flávio Arantes, Aguiar, Ana Carolina Ribeiro, Medeiros, Victor Souza, Branquinho, Adriene de Cássia, da Silva, Franco Cesar Belchior, Andrade, Rômulo Davi Albuquerque, Chaves, Andréa Rodrigues
Format:	Journal Article
Language:	English
Published:	Sociedade Brasileira de Química 19-08-2016
Subjects:	atrazine degradation photocatalysis
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Atrazine is a persistent herbicide and several studies have detected their presence in drinking water sources. In this work the atrazine photocatalytic degradation was investigated in aqueous solution using TiO2, ZnO and TiO2/ZnO catalysts. The catalysts were synthesized by Pechini's method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The process was monitored using absorption spectroscopy in ultraviolet and visible (UV-vis) region and high performance liquid chromatography (HPLC). The prepared catalysts were used in ultrafine powder form and its characterization showed nanometer order particle sizes. The atrazine absorbance decrease was observed after samples irradiation in catalysts presence and HPLC analysis showed a significant herbicide reduction and other compounds formation as degradation products. The ZnO catalyst use was more effective in atrazine molecule degradation compared to the other nanoparticles.
ISSN:	0100-4042 1678-7064 1678-7064
DOI:	10.21577/0100-4042.20160148