A Fe3O4-SiO2-TiO2 core-shell nanoparticle: Preparation and photocatalytic properties

Wang, Jie; Lin, Peng; Cao, Fei; Su, Bingqin; Shi, Hong

doi:10.1080/15533174.2016.1186061

Cited by 7 publications

(1 citation statement)

References 26 publications

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“…The mixture obtained was added to the heater reactor and mixed at 500 rpm. After three stages of washing with deionized water and ethanol, Fe 3 O 4 /SiO 2 /TiO 2 was formed (Shunxing et al 2016; Toolabi et al 2017; Wang et al 2017). The surface and shape characteristics of the nano composite and quantitative analysis of the elements were characterized using a scanning electron microscope and energy dispersive X-ray, respectively.…”

Section: Methodsmentioning

confidence: 99%

Modeling photocatalytic degradation of diazinon from aqueous solutions and effluent toxicity risk assessment using Escherichia coli LMG 15862

et al. 2018

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In this study, modeling and degradation of diazinon from contaminated water by advanced oxidation process together with a new test for effluent bioassay using E. coli were investigated. The experiments were designed based on response surface methodology. Nanoparticles (NPs) were synthesized using the sol–gel method. The shape characteristics and specifications of elements in the nanoparticles were characterized using scanning electron microscope and energy dispersive X-ray, respectively. Diazinon was measured using high performance liquid chromatography device and by-products due to its decomposition were identified by gas chromatography-mass (GC–MS). In the present study, effluent bioassay tests were conducted by defining the rate of dehydrogenase enzyme reducing alamar blue method. According to statistical analyses (R2 = 0.986), the optimized values for pH, dose of NPs, and contact time were found to be 6.75, 775 mg/L, and 65 min, respectively. At these conditions, 96.06% of the diazinon was removed. Four main by-products, diazoxon, 7-methyl-3-octyne, 2-isopropyl-6-methyl-4pyrimidinol and diethyl phosphonate were detected. According to the alamar blue reducing (ABR) test, 50% effective concentration, no observed effect concentration, and 100% effective concentration (EC100) for the mortality rate of E. coli were obtained as 2.275, 0.839, and 4.430 mg/L, respectively. Based on the results obtained, it was found that mentioned process was high efficiency in removing diazinon, and also a significant relationship between toxicity assessment tests were obtained (P < 0.05).

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Section: Methodsmentioning

confidence: 99%

Modeling photocatalytic degradation of diazinon from aqueous solutions and effluent toxicity risk assessment using Escherichia coli LMG 15862

et al. 2018

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Visible‐Light‐Driven Photocatalytic Suzuki–Miyaura Coupling Reaction Using Novel Retrievable Magnetic Photocatalyst

2021

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A new complex based on palladium (Fe 3 O 4 @SiO 2 @TiO 2 @Schiff base@Pd(0)) as a multifunctional photocatalyst has been successfully prepared using a facile method. Different techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy dispersive spectrum (EDS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic absorption spectroscopy (AAS), vibrating sample magnetometry (VSM) and thermogravimetric analysis (TGA) were applied for characterization of nano photocatalyst structure. The magnetic nano photocatalyst showed excellent catalytic activity in the Suzuki coupling reaction under visible light irradiation. This core-shell magnetic nano photocatalyst could separate using a magnetic field from the reaction mixture and reused without a significant decrease in catalytic activity.

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Magnetic photocatalysts from δ-FeOOH and TiO2 and application in reactions for degradation of methylene blue and paracetamol with UV-C and sunlight

Moura

Dauzakier

Pereira

et al. 2021

Environ Sci Pollut Res

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A Fe₃O₄-SiO₂-TiO₂ core-shell nanoparticle: Preparation and photocatalytic properties

Cited by 7 publications

References 26 publications

Modeling photocatalytic degradation of diazinon from aqueous solutions and effluent toxicity risk assessment using Escherichia coli LMG 15862

Modeling photocatalytic degradation of diazinon from aqueous solutions and effluent toxicity risk assessment using Escherichia coli LMG 15862

Visible‐Light‐Driven Photocatalytic Suzuki–Miyaura Coupling Reaction Using Novel Retrievable Magnetic Photocatalyst

Magnetic photocatalysts from δ-FeOOH and TiO2 and application in reactions for degradation of methylene blue and paracetamol with UV-C and sunlight

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