Toxicity assessment of anatase and rutile titanium dioxide nanoparticles: The role of degradation in different pH conditions and light exposure

Matteis, Valeria De; Cascione, Mariafrancesca; Brunetti, Virgilio; Toma, Chiara Cristina; Rinaldi, R.

doi:10.1016/j.tiv.2016.09.010

Cited by 83 publications

(42 citation statements)

References 59 publications

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“…Most nanotoxicity studies have reported dose-dependent toxic effects for metal and metal oxide nanoparticles, and consequently the observed toxic effects were partially attributed to the increased free metal concentration in the medium (Ates et al, 2013b; Jovanovi, 2015; DeMatteis et al, 2016). For instance, titanium ion concentration was higher for the suspensions of anatase polymorph in acidic pHs (DeMatteis et al, 2016). UV-light irradiation also reported to deteriorate the stability of anatase polymorph.…”

Section: Resultsmentioning

confidence: 99%

“…Anatase form was found more toxic than anatase/rutile mixture to human lung epithelial cells (Hsiao & Huang, 2011). DeMatteis et al (2016) also reported that anatase polymorph could be more prone to degradation and physicochemical stresses (pH, light exposure) to cause higher toxic effects. Therefore, there is a need to investigate different crystal polymorphs n -TiO 2 systematically and simultaneously to elucidate their physicochemical and toxicological properties.…”

Section: Introductionmentioning

confidence: 97%

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Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia Salina

Johnson

Ateş

Arslan

et al. 2017

Journal of Nanotoxicology and Nanomedicine

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Knowledge of nanomaterial toxicity is critical to avoid adverse effects on human and environment health. In this study, the influences of crystal morphology on physico-chemical and toxic properties of nanoscale TiO2 (n-TiO2) were investigated. Artemia salina were exposed to anatase, rutile and mixture polymorphs of n-TiO2 in seawater. Short-term (24 h) and long-term (96 h) exposures were conducted in 1, 10 and 100 mg/L suspensions of n-TiO2 in the presence and absence of food. Anatase form had highest accumulation followed by mixture and rutile. Presence of food greatly reduced accumulation. n-TiO2 dissolution was not significant in seawater (p<0.05) nor was influenced from crystal structure. Highest toxic effects occurred in 96h exposure in the order of anatase > mixture > rutile. Mortality and oxidative stress levels increased with increasing n-TiO2 concentration and exposure time (p<0.05). Presence of food in the exposure medium alleviated the oxidative stress, indicating that deprivation from food could promote toxic effects of n-TiO2 under long-term exposure.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia Salina

Johnson

Ateş

Arslan

et al. 2017

Journal of Nanotoxicology and Nanomedicine

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“…Out of the two, anatase has a larger band gap, is more chemically reactive and has a more active surface, properties that make it both more attractive to use and more toxic. [63,64] The toxicity of TiO 2 NM depends on various aspects, but among the most important ones are size, aspect ratio and surface reactivity. TiO 2 NM can cross biological barriers and accumulate in tissues and organs.…”

Section: Titanium Dioxide Nanomaterialsmentioning

confidence: 99%

Third‐Generation Solar Cells: Toxicity and Risk of Exposure

Buitrago

Novello

Meyer

2020

Helvetica Chimica Acta

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Solar energy is considered clean energy, and its use is predicted to increase in the near future. Most installed units today are crystalline solar cells, but the field is in constant development, and when the first dye sensitized solar cell was published by Grätzel and O'Reagan a new, third‐generation, solar power was born. Highly toxic metals are used to produce the photovoltaic units today, and with the predicted increase in solar cell installation, the human health hazards of these panels could become an issue. Additionally, many of these materials are used in their nanoform, which is associated with an additional risk. In this article, we discuss the technology behind the third‐generation solar cells with its valuable use of nanotechnology as well as the possible health hazard when such nanomaterials are used in solar power units. We will show that the main exposure will occur either during the development and production phases or at the end‐of‐life stage of the solar cells, where toxic material can leach into landfills, and subsequently into the environment and impact the ecosystem directly, or humans indirectly through edible plants or drinking water.

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“…Figure 2 shows a structural drawing of rutile and anatase bulk materials. The lengths of the connections and the angles between the atoms are shown, showing the elongated cubic form [5].…”

Section: Lattice Structure Of Tiomentioning

confidence: 99%

Design and Growth of Metal Oxide Film as Liquefied Petroleum Gas Sensors

Sonker¹,

Shabajeet²,

Johari³

et al. 2020

Gas Sensors

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Nowadays innovations in synthesis methods for metal oxide-based nanomaterials such as nanostructured and both physical and chemical route techniques have been adopted by various researchers around the world. The investigation has been focusing on various deposition parameters for fabricating nanostructured metal oxide. Gas sensors that use metal oxide materials are broadly utilized in industry to monitor combustion processes. While they are economical to powerful in high temperature environments, many of these instruments are not selective towards the species of interest when placed in a stream composed of multiple gases. Research on nanostructured metal oxide materials has generated great interest in scientific community. Metal oxide is a chemically stable, harmless, biocompatible, inexpensive material with very high dielectric constant and interesting photocatalytic activities. It is a wide-gap semiconductor and depending on its chemical composition, it shows a large range of electrical conductivity. Synthesis strategies regarding nanocomposites of metal oxide with other inorganic and organic materials sensing activities has been reviewed. The measure response of metal oxide film-based sensor highat low concentration of LPG.

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Toxicity assessment of anatase and rutile titanium dioxide nanoparticles: The role of degradation in different pH conditions and light exposure

Cited by 83 publications

References 59 publications

Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia Salina

Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia Salina

Third‐Generation Solar Cells: Toxicity and Risk of Exposure

Design and Growth of Metal Oxide Film as Liquefied Petroleum Gas Sensors

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