Photocatalytic degradation of diazinon with illuminated ZnO–TiO2 composite

Jafari, Ahmad Jonidi; Shirzad‐Siboni, Mehdi; Yang, Jae‐Kyu; Naimi-Joubani, Mohammad; Farrokhi, Mehrdad

doi:10.1016/j.jtice.2014.12.020

Cited by 140 publications

(36 citation statements)

References 55 publications

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“…A lower extent of adsorption was observed on the nanoparticles' surface, at high pHs, as both diazinon and the Fe 3 O 4 -WO 3 -APTES nanoparticles are negatively charged and, in turn, the electrostatic repulsion happens between them [8,28]. As mentioned above, the highest performance was seen at the pH value of 7; therefore, all other experiments were carried out at this level.…”

Section: E昀fects Of Operational Parameters On the Photocatalytic Degrmentioning

confidence: 99%

“…After that, a downward trend was seen in efficiency. The main reasons for this improvement in removal efficiency are as follows: when the dose of the nanocatalyst is raised, there will be more diazinon molecules that can be adsorbed on the surface of the catalyst and the density of catalyst particles increases in the area of illumination [8,9,28,29]. In the case of catalyst doses higher than 0.25 g.L -1 , a downward trend was experienced in diazinon removal as light scattering decreasing the aggregation and the activity of the catalyst particles takes place.…”

Section: E昀fect Of Photocatalyst Dosagementioning

confidence: 99%

“…In order to achieve the kinetic information, the zero, first and second order equations (eqs (1)-(3)) were used [8,30]:…”

Section: Kinetics and Electrical Energy Studiesmentioning

confidence: 99%

“…The first-order model explained better the photocatalytic degradation rate. As can be seen from eqs (4) and (5), the relationship between the first-order rate constant (kobs) and initial diazinon concentration was described better by the Langmuir-Hinshelwood (L-H) model [8,30]. versus initial concentration of diazinon, respectively.…”

Section: Kinetics and Electrical Energy Studiesmentioning

confidence: 99%

“…The European Economic Community advices that the concentrations of pesticides in drinking water should be less than 0.1 g.L -1 [7]. Diazinon, which is an organophosphorus (PO), is employed to control different kinds of insects [8,9]. It is classified by the World Health Organization (WHO) as "moderately hazardous" Class II.…”

Section: Introductionmentioning

confidence: 99%

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Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Mohagheghian

Ayagh

Godini

et al. 2017

Journal of Advanced Oxidation Technologies

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Abstract:In this research, photocatalytic degradation of diazinon by amino-functionalized Fe 3 O 4 -WO 3 nanoparticles under UV irradiation was investigated with variation of pH, nanocatalyst dose, initial diazinon concentration, different purging gases, H 2 O 2 concentration, and type of organic compounds. Under optimal conditions: pH=.23 % of the insecticide was removed after 120 min. A decrease was observed in the removal efficiency of diazinon in the presence of different purging gases and organic compounds. Based on the three kinetic models developed in this study, it was found that the removal of diazinon followed the first order kinetic. Also, application of the UV/amino-functionalized Fe 3 O 4 -WO 3 nanoparticles both increased the performance and decreased electric power consumption. However, 86.17 % of diazinon in real water samples was removed under the optimized conditions. Furthermore, the photocatalytic activity was kept after five successive cycles.

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Section: E昀fects Of Operational Parameters On the Photocatalytic Degrmentioning

confidence: 99%

Section: E昀fect Of Photocatalyst Dosagementioning

confidence: 99%

“…In order to achieve the kinetic information, the zero, first and second order equations (eqs (1)-(3)) were used [8,30]:…”

Section: Kinetics and Electrical Energy Studiesmentioning

confidence: 99%

Section: Kinetics and Electrical Energy Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Mohagheghian

Ayagh

Godini

et al. 2017

Journal of Advanced Oxidation Technologies

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Advanced Oxidation Processes for Microconstituents Removal in Aquatic Environments

Chowdhury

Surampalli

Bhunia

2023

Microconstituents in the Environment

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Sonophotocatalytic treatment of diazinon using visible light‐driven Ce:Cu‐1,4‐BDOAH₂ photocatalyst in a batch‐mode process: Response surface methodology and optimization

Taghipour

Karimipour

Ghaedi

et al. 2017

Applied Organom Chemis

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Cu-1,4-benzenedioxyacetic acid (Cu-1,4-BDOAH 2 ) with a narrow band gap (2.52 eV) was synthesized and doped with Ce to afford Ce:Cu-1,4-BDOAH 2 as an efficient photocatalyst with narrower band gap (2.39 eV). The prepared Cu-1,4-BDOAH 2 and Ce:Cu-1,4-BDOAH 2 were characterized using Fourier transform infrared, energy-dispersive X-ray, diffuse reflectance spectroscopies, scanning electron microscopy and X-ray diffraction. The sonophotocatalytic degradation of diazinon was carried out in a batch-mode reactor using visible light-driven Ce:Cu-1,4-BDOAH 2 photocatalyst as well as ultrasonic irradiation.The narrow band gap of the photocatalyst means that it can be activated under visible light illumination. The effects of operational parameters such as initial diazinon concentration (5-25 mg l −1 ), pH (2-10), photocatalyst dosage (10-30 mg) and irradiation time (10-30 min) on the sonophotocatalytic degradation efficiency were investigated using central composite design under response surface methodology. The optimization process was studied using desirability function and the results indicated 99.8% degradation, which was obtained at optimum values of 25 mg l −1 , 6, 20 mg and 20 min for the initial concentration of diazinon, pH, photocatalyst dosage and irradiation time, respectively. Reusability experiments of Ce:Cu-1,4-BDOAH 2 photocatalyst showed that it is quite stable with excellent catalytic activity even after five cycles.

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Photocatalytic degradation of diazinon with illuminated ZnO–TiO2 composite

Cited by 140 publications

References 55 publications

Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Advanced Oxidation Processes for Microconstituents Removal in Aquatic Environments

Sonophotocatalytic treatment of diazinon using visible light‐driven Ce:Cu‐1,4‐BDOAH₂ photocatalyst in a batch‐mode process: Response surface methodology and optimization

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Photocatalytic degradation of diazinon with illuminated ZnO–TiO2 composite

Cited by 140 publications

References 55 publications

Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation

Advanced Oxidation Processes for Microconstituents Removal in Aquatic Environments

Sonophotocatalytic treatment of diazinon using visible light‐driven Ce:Cu‐1,4‐BDOAH2 photocatalyst in a batch‐mode process: Response surface methodology and optimization

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Sonophotocatalytic treatment of diazinon using visible light‐driven Ce:Cu‐1,4‐BDOAH₂ photocatalyst in a batch‐mode process: Response surface methodology and optimization