Photocatalytic degradation of diazinon using Zno/TiO2 nano-photocatalysts

authors:

avatar zahra darbandi , avatar mohammad ali zazoli ORCID , * , avatar Mohammad Shokrzadeh , avatar noureddin Mousavi nasab , avatar ehsan rostamali

Koomesh: Vol.18, issue 3; 343-349
published online: December 28, 2016
article type: Research Article
received: September 01, 2016
accepted: November 02, 2016

how to cite: darbandi Z, zazoli M A, Shokrzadeh M, Mousavi nasab N, rostamali E. Photocatalytic degradation of diazinon using Zno/TiO2 nano-photocatalysts. koomesh. 2016;18(3):e151123. 

Abstract

Introduction: Diazinon is an organophosphate pesticides that widely used for agricultural pests and vectors. Diazinon resists to biodegradation so there is major concern about it. The aim of present work was to study the decompostionof diazinon by nano-photocatalytic ZnO-TiO2 in the presence of UVC radiation. Materials and Methods: This work is a laboratory-experimental study. Characterization of nanoparticles was determined through TEM pattern. The number of samples was determined by Taguchi statistical method. The samples with definite concentration of diazinon and nanopartical in different operational conditions were exposed to UVC radiation, individually .Diazinon concentration was measured using HPLC. Data analysis was performed using the software Minitab 16. Results: The results showed that with increasing reaction time, the removal of diazinon increases but by increasingthe dose of nanoparticles and Diazinon concentration the removal rate decreases. The highest removal efficiency rate was 95%. Conclusion:  The combination of catalysts is a new method for the removal of diazinon. The results showed that the photocatalytic nano-ZnO-TiO2 has a positive effect on diazinon degradation

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