OBTAINING ZnO IMMOBILIZED OVER DIFFERENT SUBSTRATES BY HYDROTHERMAL TREATMENT FOR PHOTOCATALYSIS APPLICATION

Química Nova

Lansarin, Marla Azário¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil¹  Bagnara, Mônica¹  Farias, Jéssica¹ 

关键词:  hydrothermal crystal growth;    nanostructures;    zinc oxide;    photocatalysis;    design of experiments;   

DOI  :  10.5935/0100-4042.20160032

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The aim of this work is to systematically explore the effect of the synthesis conditions of ZnO structures, immobilized on different substrates by hydrothermal treatment, in its photocatalytic activity. A circumscribed central composite design of experiments was used to analyze the effects of reagents stoichiometry, reaction time and temperature, covering a wide range of these variables. The substrates used were etched glass, copper and zinc foils. The photocatalytic activity of the as-obtained ZnO samples was evaluated through photocatalytic degradation of rhodamine B (RhB) in aqueous solution under UV irradiation. Zinc foils presented the best immobilized film quality and the maximum dye removal was 80% in one hour of UV exposure.

【 授权许可】

Unknown