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BIBTEX RIS

Degradação fotocatalítica de atrazina na presença de catalisadores nanoparticulados

2016; Brazilian Chemical Society; Linguagem: Inglês

10.21577/0100-4042.20160148

ISSN

1678-7064

Autores

Flávio Arantes Campos, Ana Carolina Ribeiro Aguiar, Victor Souza Medeiros, Adriene de Cássia Branquinho, Franco Cesar Belchior da Silva, Rômulo Davi Albuquerque Andrade, Andréa Rodrigues Chaves,

Tópico(s)

Dye analysis and toxicity

Resumo

ATRAZINE PHOTOCATALYTIC DEGRADATION IN NANOPARTICLES CATALYSTS PRESENCE.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 TiO 2 , ZnO and TiO 2 /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.

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