Antibacterial activity of TiO<sub>2</sub> and TiO<sub>2</sub> composites nanopowders prepared by hydrothermal method

Rasheed, Rashed Taleb; Mansoor, Hadeel Salah; Qasim, Bashar

doi:10.1088/2053-1591/ab2313

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…During these years of research on synthesizing titanium oxide nanoparticles, the sol–gel, − hydrothermal method, − and chemical vapor and liquid phase deposition , were most often used. , However, the sol–gel and hydrothermal methods have been identified as the most common and are simple to implement. The hydrothermal method is a relatively inexpensive method that ensures high purity and size uniformity of the synthesized one-dimensional TiO 2 nanostructures. − The process of crystallization of the substance occurs inside a Teflon or polypropylene autoclave and a stainless-steel vessel, which is stored at a temperature above 100 °C and a pressure of more than 1 atm.…”

Section: Introductionmentioning

confidence: 99%

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

Stepanova,

Tite,

Ivanenko

et al. 2023

ACS Omega

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Photocatalysis is one of the approaches for solving environmental issues derived from extremely harmful pollution caused by industrial dyes, medicine, and heavy metals. Titanium dioxide is among the most promising photocatalytic semiconductors; thus, in this work, TiO 2 powders were prepared by a hydrothermal synthesis using titanium tetrachloride TiCl 4 as a Ti source. The effect of the hydrochloric acid (HCl) concentration on TiO 2 formation was analyzed, in which a thorough morphostructural analysis was performed employing different analysis methods like XRD, Raman spectroscopy, SEM/TEM, and N 2 physisorption. EPR spectroscopy was employed to characterize the paramagnetic defect centers and the photogeneration of reactive oxygen species. Photocatalytic properties were tested by photocatalytic degradation of the rhodamine B (RhB) dye under UV light irradiation and using a solar simulator. The pH value directly influenced the formation of the TiO 2 phases; for less acidic conditions, the anatase phase of TiO 2 crystallized, with a crystallite size of ≈9 nm. Promising results were observed for TiO 2 , which contained 76% rutile, showing a 96% degradation of RhB under the solar simulator and 91% under UV light after 90 min irradiation, and the best result showed that the sample with 67% of the anatase phase after 60 min irradiation under the solar simulator had a 99% degradation efficiency.

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Section: Introductionmentioning

confidence: 99%

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

Stepanova,

Tite,

Ivanenko

et al. 2023

ACS Omega

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“…The particles produced via this method are more likely to have smoother sizes, larger surface areas, smaller crystallite sizes, and higher stability compared to those produced by other methods. [12][13][14][15] Ghosh et al synthesized CdO and CuO nanocrystals under solvothermal conditions. Nanocrystals are characterized by electron microscope, absorption spectroscopy, and fluorescence spectroscopy as well as X-ray diffraction.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Examination of Structural and Electrical Properties of CuO‐Doped CdO Nanocomposites Produced by the Hydrothermal Method

Yıldız

Katı

Gül

2022

Cryst. Res. Technol.

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In this study, pure CdO and CdO‐CuO nanopowders with different dopant concentrations are synthesized by the hydrothermal method. Structural properties of the nanopowders are characterized by X‐ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), morphological properties and elemental analyses are characterized by Field Emission Scanning Electron Microscopy (FESEM), optical properties are characterized by UV–vis spectroscopy, and electrical properties are characterized by the current–voltage technique. XRD data show that nanopowders are polycrystalline and crystallinity decreases with the doping concentration. In the analysis of FESEM images, it can be concluded that the morphology of the particles is shaped as needle‐like, spherical‐like, and randomly oriented nanorods forms from the cube form. Also, by joining those nanorods, spherical‐like microstructures occur, and while the dopant concentration increases, echinus‐like forms are obtained. The energy bandgap of the nanopowders decreases with an increased dopant concentration of CuO. It is observed that the dopant concentration of CuO also changes the electrical properties.

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Functionalized multi-walled carbon nanotubes for oil spill cleanup from water

Abdullah

Juzsakova

Hafad

et al. 2021

Clean Techn Environ Policy

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The growing global economy resulted in an incessant increase in transportation and exploitation of oil. Hence, the oil spillage has been considered a serious threat to aquatic and terrestrial ecosystems. Therefore, water purification has been considered a major challenge around the world. There are numerous classical methods available for oil removal from water, but owing to multiple defects and disadvantages, research efforts have focused to find such adsorbents which can improve oil adsorption capability. Traditional adsorbent material typically applied in oil removal includes activated carbon, organoclays, wool, zeolites, etc. These materials suffer from several drawbacks such as low absorption capacity, non-selective absorption, and complicated reusability, whereas nano-adsorbents offer multiple advantages such as having multiple sorption sites, large surface area, short intra-particle diffusion distance, tuneable pore size, and ease of low-temperature modification. Multi-walled carbon nanotubes (MWCNTs) are extensively used adsorbent materials with a strong affinity for the removal of organic pollutants. The functionalization MWCNTs further increase the sorption capacity of adsorbents manifolds to remove organic materials. These nanocomposites are also compatible with green materials and considered environmentally friendly adsorbents. This review paper aims at providing an insight to understand the properties of the MWCNTs and their potential use to adsorb hydrocarbons from water. Moreover, the synthesis methods of those materials, their modification procedures including the functionalization with metal oxide nanoparticles, and applications are also discussed in detail. Graphic abstract

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Antibacterial activity of TiO₂ and TiO₂ composites nanopowders prepared by hydrothermal method

Cited by 6 publications

References 22 publications

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

Examination of Structural and Electrical Properties of CuO‐Doped CdO Nanocomposites Produced by the Hydrothermal Method

Functionalized multi-walled carbon nanotubes for oil spill cleanup from water

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Antibacterial activity of TiO2 and TiO2 composites nanopowders prepared by hydrothermal method

Cited by 6 publications

References 22 publications

TiO2 Phase Ratio’s Contribution to the Photocatalytic Activity

TiO2 Phase Ratio’s Contribution to the Photocatalytic Activity

Examination of Structural and Electrical Properties of CuO‐Doped CdO Nanocomposites Produced by the Hydrothermal Method

Functionalized multi-walled carbon nanotubes for oil spill cleanup from water

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Product

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Antibacterial activity of TiO₂ and TiO₂ composites nanopowders prepared by hydrothermal method

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity

TiO₂ Phase Ratio’s Contribution to the Photocatalytic Activity