Toxicity of TiO2 nanoparticles to cladocerans, algae, rotifers and plants – Effects of size and crystalline structure

Clément, Laura; Hurel, Charlotte; Marmier, Nicolas

doi:10.1016/j.chemosphere.2012.09.013

Cited by 334 publications

(158 citation statements)

References 30 publications

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“…suspension preparation method with use of solvent, sonication, filtration, (Clement et al, 2013;Arouja et al, 2009; and iii) mode of exposure to organism i.e. the time of exposure, UV exposure (Zhu et al, 2010;Dabrunz et al, 2011;Seitz et al, 2013;Ma et al, 2012).…”

Section: The Effect Factor Calculationmentioning

confidence: 99%

Freshwater ecotoxicity characterisation factor for metal oxide nanoparticles: A case study on titanium dioxide nanoparticle

Salieri

Righi

Pasteris

et al. 2015

Science of The Total Environment

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Section: The Effect Factor Calculationmentioning

confidence: 99%

Freshwater ecotoxicity characterisation factor for metal oxide nanoparticles: A case study on titanium dioxide nanoparticle

Salieri

Righi

Pasteris

et al. 2015

Science of The Total Environment

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“…Moreover, the attachment of nanocrystallite with the cell influence on the production of intracellular reactive oxygen species (ROS). Previous study showed that the coordination and surface properties allow anatase after dispersion induce the generation of ROS [34].…”

Section: Discussionmentioning

confidence: 99%

Antibacterial Applications of Anatase TiO<SUB>2</SUB> Nanoparticle

Alhadrami¹,

Baqasi²,

Iqbal³

et al. 2017

AJN

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Many methods have been used for the preparation of nanostructured metal oxides. Here we report the synthesis of TiO 2 nanoparticles by facile hydrothermal process by varying the concentration of the precursor and reaction temperature while keeping the process time constant. Morphological, structural and optical studies were carried out by scanning electron microscopy equipped with energy dispersive spectroscopy, X-ray powder diffraction spectroscopy and VU-Vis-NIR spectroscopy. Morphological and compositional analysis reveal that the prepared nanoparticles are highly pure with an approximate average particle size 5-15nm. XRD studies showed their crystalline structure and the sizes around 5 nm, while the optical absorption studies in the photon wavelength range 300-600 nm reveal that the strong absorbance peak is positioned at around 3.5 eV nm whereas visible energy is almost transparent for the materials. Finally, the antibacterial effect of TiO 2 nanoparticles has been studied. Plating technique was used to determine lowest concentration that prevent or inhibit growth of bacteria. This technique of TiO 2 nanoparticle was used against most common organisms which cause wound infection including: MRSA, E. coli and Pseudomonas aeruginosa. Different concentrations of TiO 2 nanoparticles were used 100 μg/ml, 200 μg/ml, 400 μg/ml, 600 μg/ml and 800 μg/ml. Inhibition of bacteria was different for prepared TiO 2 samples due to different concentration of the precursors and synthesis temperature.

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“…Eco-toxicity of singular NMs and their microbial and organismal uptake are known to be influenced by material-specific physicochemical properties such as size, [143] shape, [144] aggregation state, [145] surface functionality and coating, [146] reactive oxygen species (ROS) generation capability, [143,147] photoactivity, [148] crystallinity [149] and dissolution [26,145] of metal NMs and bandgap [150] of metal oxide NMs. When NMs are exposed to the environment they experience aggregation in aqueous media [25] and deposition onto solid surface [151] and porous media, [152] which contribute to their mobility in the aqueous environment.…”

Section: Environmental Interaction Of Nanohybridsmentioning

confidence: 99%

“…Several carbonaceous (fullerene, [180,181] CNT [182] or graphene oxide [183] ) and metallic NMs (Ag, [26] TiO 2 , [149,184] ZnO, [184] CuO [184] ) are known to illicit toxicological effects on biological species. The key mechanisms associated with such toxic responses include: ROS mediated oxidative stress, [143] direct interaction of metal NMs with cell membranes, [144] lipid peroxidation, [185] ROS independent protein oxidation, [186] dissolution and relevant reactive membrane or enzymatic damage, [26] asbestos-like inflammation by CNTs [187] and physical rupture of cell membranes.…”

Section: Toxicitymentioning

confidence: 99%

A critical review of nanohybrids: synthesis, applications and environmental implications

et al. 2014

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Environmental context. Recent developments in nanotechnology have focussed towards innovation and usage of multifunctional and superior hybrid nanomaterials. Possible exposure of these novel nanohybrids can lead to unpredicted environmental fate, transport, transformation and toxicity scenarios. Environmentally relevant emerging properties and potential environmental implications of these newer materials need to be systematically studied to prevent harmful effects towards the aquatic environment and ecology.Abstract. Nanomaterial synthesis and modification for applications have progressed to a great extent in the last decades. Manipulation of the physicochemical properties of a material at the nanoscale has been extensively performed to produce materials for novel applications. Controlling the size, shape, surface functionality, etc. has been key to successful implementation of nanomaterials in multidimensional usage for electronics, optics, biomedicine, drug delivery and green fuel technology. Recently, a focus has been on the conjugation of two or more nanomaterials to achieve increased multifunctionality as well as creating opportunities for next generation materials with enhanced performance. With incremental production and potential usage of such nanohybrids come the concerns about their ecological and environmental effects, which will be dictated by their not-yet-understood physicochemical properties. While environmental implication studies concerning the single materials are yet to give an integrated mechanistic understanding and predictability of their environmental fate and transport, the importance of studying the novel nanohybrids with their multidimensional and complex behaviour in environmental and biological exposure systems are immense. This article critically reviews the literature of nanohybrids and identifies potential environmental uncertainties of these emerging 'horizon materials'.

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Toxicity of TiO2 nanoparticles to cladocerans, algae, rotifers and plants – Effects of size and crystalline structure

Cited by 334 publications

References 30 publications

Freshwater ecotoxicity characterisation factor for metal oxide nanoparticles: A case study on titanium dioxide nanoparticle

Freshwater ecotoxicity characterisation factor for metal oxide nanoparticles: A case study on titanium dioxide nanoparticle

Antibacterial Applications of Anatase TiO<SUB>2</SUB> Nanoparticle

A critical review of nanohybrids: synthesis, applications and environmental implications

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