Titanium dioxide nanoparticles: synthesis, characterisations and aquatic ecotoxicity effects

Mezni, Amine; Alghool, Samir; Sellami, Badreddine; Saber, Nesrine Ben; Altalhi, Tariq

doi:10.1080/02757540.2017.1420178

Cited by 25 publications

(12 citation statements)

References 27 publications

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“…The aging processes, including organic matter coating and thus dispersion, freeze-thaw cycles, as well as expansion and contraction because of the temperature change, will result in the detachment of these particles. These released nanoparticles may also have potential risks to the ecosystems, as summarized by several review papers (Devin et al 2017;Mezni et al 2018;Rana and Kalaichelvan, 2013).…”

Section: Dissolvable Contaminantsmentioning

confidence: 99%

Environmental behavior of engineered biochars and their aging processes in soil

Duan

Oleszczuk

Pan

et al. 2019

Biochar

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In recent years, due to the broad application of biochars, the preparation, environmental behavior and aging processes of biochars have attracted wide attention globally, especially the modification of biochars. However, most of the studies only consider the improvement of biochar properties right after the modification, but neglect a complete evaluation of the longterm stability and eco-toxicity of these newly developed materials after entering the environment. With the development and utilization of biochars, engineered biochars (EngBCs) will soon enter the market, but its environmental risk still remains unclear. The literature does not provide adequate information on how aging of EngBCs will affect their properties, and indirectly impact the properties of soils (cycle of elements and organic matter). Therefore, this review paper summarizes the aging process and environmental risk of biochars, aiming at better understanding the interactions between EngBCs and soil components or pollutants. More importantly, this review is to point out the contradictory speculations of environmental behavior of EngBCs studied at the present stage. Due to the modification, the EngBCs stability may be significantly reduced. However, the formation of functional group on EngBCs will enhance their interaction with soil minerals to form biocharsmineral complex, and thus EngBCs could be protected. The impacts of EngBCs after entering the environment are also ambiguous. Therefore, understanding EngBCs environmental behavior is critical, which is helpful to reduce the potential risk and to produce EngBCs following the rule of sustainable development and safety to the environment.

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Section: Dissolvable Contaminantsmentioning

confidence: 99%

Environmental behavior of engineered biochars and their aging processes in soil

Duan

Oleszczuk

Pan

et al. 2019

Biochar

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“…Among anthropogenic contaminants of emerging concern are engineered nanomaterials (ENMs) that can be divided into two general classes: carbon-based and metal-containing ENMS (Fadeel and Garcia-Bennett, 2010). Titanium dioxide (TiO 2 ) are metal oxide particles which are extensively used in various industrial applications and consumer products including water treatment approaches, biomaterials, cosmetics, and electronic equipments (Robichaud et al, 2009;Mezni et al, 2018), mainly due to their high transparency to visible light and high UV absorption (Braydich-Stolle et al, 2009). For this reason it is estimated that the worldwide TiO 2 particles production will reach 2.5 million tons by 2025 (Mezni et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Titanium dioxide (TiO 2 ) are metal oxide particles which are extensively used in various industrial applications and consumer products including water treatment approaches, biomaterials, cosmetics, and electronic equipments (Robichaud et al, 2009;Mezni et al, 2018), mainly due to their high transparency to visible light and high UV absorption (Braydich-Stolle et al, 2009). For this reason it is estimated that the worldwide TiO 2 particles production will reach 2.5 million tons by 2025 (Mezni et al, 2018). There are three crystalline forms of TiO 2 : i) anatase (tetragonal), ii) rutile (tetragonal), and iii) brookite (orthorhombic) (Cho et al, 2013;Iswarya et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Mytilus galloprovincialis is considered a good bioindicator due to its capacity to tolerate and accumulate various contaminants, sedentary lifestyle, wide geographical distribution and abundance (Wang et al, 1996;Viarengo et al, 2007;Banni et al, 2014). Although recent studies already revealed the impacts of TiO 2 particles in M. galloprovincialis (Canesi et al, 2010(Canesi et al, , 2012Ciacci et al, 2012;Barmo et al, 2013;Mezni et al, 2018), to our knowledge no information is available on the toxic effects of rutile and anatase forms on this mussel species. Therefore, the present study evaluated the impacts induced by different concentrations of rutile and anatase particles in M. galloprovincialis, by measuring histopathological and metabolic alterations as well as oxidative and neurotoxic status.…”

Section: Introductionmentioning

confidence: 99%

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Biochemical and histopathological impacts of rutile and anatase (TiO2 forms) in Mytilus galloprovincialis

Leite

Coppola

Monteiro

et al. 2020

Science of The Total Environment

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“…The advancements in nanotechnology and application of engineered nanomaterials (NMs) have raised public concerns for their potential environmental and health impacts. Nanosize titanium dioxide (nTiO 2 ) is among the most widely used NMs due to its excellent electrical properties and optical performance (Abdullah and Kamarudin, 2017;Mezni et al, 2018), and its projected production quantities are up to 7,800-38,000 tons/ year (Mueller and Nowack, 2008;Hendren et al, 2011). The increased manufacture will inherently result in increased environmental exposure (Chapman, 2006;Leite et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Nano-Titanium Dioxide Exposure Impacts Nitrogen Metabolism Pathways in Cyanobacteria

Cherchi

Lin

2021

Environmental Engineering Science

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The wide and increasing use of nano-titanium dioxide (nTiO 2 ) has led to its release in the environment that will likely impact aquatic eco-relevant biota. In this study, we investigated the impact of sublethal concentrations of nTiO 2 on the nitrogen (N) metabolism of the primary producer, nitrogen-fixing cyanobacteria Anabaena PCC 7120, using transcriptional-level information of biomarker genes involved in global N regulation, N fixation-, N assimilation-, and N storage-specific pathways. The results showed that both the circadian patterns of cyanobacterial metabolism and nTiO 2 intrinsic properties distinctively governed the toxicity responses during light and dark exposure to nTiO 2 . During illuminated conditions, the majority of genes linked to cellular nitrogen status exhibited a clear upregulation in the dose range of 6-60 mg/L$h, whereas overall gene downregulation was mainly observed at the end of dark cycle, characterized by low cell metabolism and energy (ATP) levels. The nTiO 2 dose-dependent production of intracellular metabolites (amino acids) involved in both the GS-GOGAT pathway of N assimilation and the intracellular N storage pathway suggests that pathways involving amino acid biosynthesis or degradation might be activated or repressed. This, possibly, contributes to the increase of newly synthesized proteins needed for detoxification in response to the cellular stresses induced by nTiO 2 treatment. These findings suggest that under environmental perturbations generated by nTiO 2 , cyanobacteria are likely to modify their intracellular carbon and nitrogen balance, thus impact, at a larger scale, ecological trophic interactions and food web dynamics within complex ecological systems.

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Titanium dioxide nanoparticles: synthesis, characterisations and aquatic ecotoxicity effects

Cited by 25 publications

References 27 publications

Environmental behavior of engineered biochars and their aging processes in soil

Environmental behavior of engineered biochars and their aging processes in soil

Biochemical and histopathological impacts of rutile and anatase (TiO2 forms) in Mytilus galloprovincialis

Nano-Titanium Dioxide Exposure Impacts Nitrogen Metabolism Pathways in Cyanobacteria

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