Modified and Nonmodified TiO2 Nanoparticles for Environmental Applications

Belessi, Vassiliki; Petridis, Dimitris

doi:10.1016/b978-0-444-63283-8.00013-2

Cited by 3 publications

(3 citation statements)

References 188 publications

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“…Magnetic photocatalytic materials that had been studied so far used a variety of magnetite materials are an iron oxide (magnetite, Fe3O4 or maghemite, Fe2O3), black sand, NiFe2O4, FeCo, CoFe2O4 and Co3O4 which were used as superparamagnetic properties [4]. Among them, Fe3O4 has drawn considerable attention due to its remarkable magnetic properties, low toxicity, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/TiO2 Nanocomposite as Photocatalyst in Photoreduction Reaction of CO2 Conversion to Methanol

Pradipta

Mauludi

Kartini

et al. 2020

KEM

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TiO2 modified Fe3O4 nanocomposite as photocatalyst in CO2 indirect reduction was synthesized by an ultrasonic-assisted sol-gel method and its photocatalytic activity was studied as well. The modification of the TiO2 composite was attempted to modify titanium dioxide to have better performance as a photocatalyst. Magnetite synthesis was carried out by the sono-coprecipitation method with the addition of the capping agent. The magnetite was coated with TiO2 via the sol-gel method under ultrasonic irradiation. The products were characterized by X-ray diffraction (XRD), Fourier transforms infrared spectrophotometry (FT-IR), transmission electron microscopy (TEM), and turbidimetry. The final product was also analyzed by diffuse reflectance UV-Visible (DR-UV) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX). The product of indirect reduction was analyzed by gas chromatography-mass spectrometry (GC-MS). Photocatalytic reaction with Fe3O4/TiO2 nanocomposite produced a higher concentration of methanol than using TiO2. Methanol concentration produced from the photocatalytic reaction using TiO2 and Fe3O4/TiO2 was 6.63% and 16.82%.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/TiO2 Nanocomposite as Photocatalyst in Photoreduction Reaction of CO2 Conversion to Methanol

Pradipta

Mauludi

Kartini

et al. 2020

KEM

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“…Chelating biopolymers are able to form coordination complexes with heavy metal ions, by their nitrogen, sulfur or oxygen groups . Many articles have been published about the convenience of using chitosan because it adsorbs various metal cations and some of its components allow easy recovery of contaminants, or prevent its solubilization in acidic media. Also, studying chitosan based composites for wastewater treatment is relevant for future large projects because it can be obtained from different sources at low cost.…”

Section: Introductionmentioning

confidence: 99%

“…TiO 2 is known for its photocatalytic properties; also, it is chemically stable, non‐toxic, low‐cost and re‐usable. Some photo‐degradation materials using TiO 2 allow 78–85% degradation after UV light exposure, also Belessi and Petridis reported that TiO 2 in some porous supports enhances catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Novel chitosan/polyurethane/anatase titania porous hybrid composite for removal of metal ions waste

Argüello

Hernández-Martínez

Molina

et al. 2016

J. Chem. Technol. Biotechnol.

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BACKGROUND: For almost three decades, heavy metal pollution has been studied and several treatment techniques have been proposed. Nevertheless, this contamination in wastewater is still a severe problem. In our study, Cd (II), Pb (II) and Al (III) metal ions removal was evaluated, using a chitosan-TiO 2 -polyurethane based composite. Composite synthesis variations in composition and temperature were studied; morphology characterization was conducted by SEM, EDS-STEM and X-ray micro-CT. Wastewater samples in different pH solutions, and in static and dynamic systems were analyzed by ICP-MS. Also, the photo-degradation of azo dyes in these systems was studied by UV-vis spectrophotometry. A dynamic removal system was built as possible water treatment plant prototype.

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Preparation of Semiconductor Zinc Oxide Nanoparticles as a Photocatalyst to Get Rid of Organic Dyes Existing Factories in Exchange for Reuse in Suitable Purpose

Alhadhrami¹

2018

International Journal of Electrochemical Science

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A new photocatalyst zinc(II) oxide (ZnO) was synthesized using a microwave-assisted green method using p-hydroxybenzoic acid and zinc nitrate as precursors. The sample was characterized by FTIR, UV-visible, EDX, XRD, SEM and TEM techniques. The molecular formula of the primary precursor [Zn 2 (C 7 H 5 O 3 ) 2 (NO 3 ) 2 (H 2 O) 4 ] binuclear zinc(II) complex was discussed using elemental analyses (CHN), FTIR, UV-visible, XRD, SEM and thermal analysis (TG). This new binuclear complex was formed with p-hydroxybenzoic acid as a bridged chelate connecting two zinc metal ions through the carboxylate groups. The chelation assignments declare that Zn(II) metals are coordinated to the phydroxybenzoate ligand with octahedral geometry. The photocatalytic property of the ZnO products was examined for the degradation of methyl red (MR), methyl orange (MO) and methylene blue (MB) solutions. The resulting data demonstrated a photocatalytic efficiency towards the removal of the selected organic dyes. The Electrical properties of ZnO NPs were measured within the temperature range 313-403 K.

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Modified and Nonmodified TiO2 Nanoparticles for Environmental Applications

Cited by 3 publications

References 188 publications

Synthesis of Fe<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> Nanocomposite as Photocatalyst in Photoreduction Reaction of CO<sub>2</sub> Conversion to Methanol

Synthesis of Fe<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> Nanocomposite as Photocatalyst in Photoreduction Reaction of CO<sub>2</sub> Conversion to Methanol

Novel chitosan/polyurethane/anatase titania porous hybrid composite for removal of metal ions waste

Preparation of Semiconductor Zinc Oxide Nanoparticles as a Photocatalyst to Get Rid of Organic Dyes Existing Factories in Exchange for Reuse in Suitable Purpose

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