Evaluation of toxicity of nanoclays and graphene oxide in vivo: a Paramecium caudatum study

Kryuchkova, Marina; Danilushkina, Anna; Lvov, Yuri; Fakhrullin, Rawil

doi:10.1039/c5en00201j

Cited by 161 publications

(123 citation statements)

References 47 publications

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“…[5] Among the aluminosilicates, halloysite nanotubes (Al 2 Si 2 O 5 (OH) 4 ·2H 2 O) (HNTs) are special nano-geomaterials similar to commonly used platy kaolin that have garnered interest in material science due to their versatile advantages of biocompatibility, environmental friendliness, large surface area, high porosity, widely spreadable properties and tunable surface chemistry as well as low cost. Moreover, HNTs are nanomaterials not toxic to aqueous species as confirmed by several studies on the interaction of halloysite nanotubes with microscopic algae Chlorella pyrenoidosa, [6] fresh water ciliate protist Paramecium caudatum [7] and nematode Caenorhabditis elegans. [8] Similarly HNTs exhibits no ecotoxicity towards Raphanus sativus L. [9] HNTs exhibit potential application owing to their gibbsite octahedral sheet aluminium (innermost) and silicate (outermost) surfaces, which allow different chemical functionalities onto the internal and the external surfaces.…”

Section: Introductionmentioning

confidence: 86%

“…[19] Cucurbiturils (CB) are cyclic oligomers of glycoluril units which can exhibit host-guest chemistry like cyclodextrins. There are different homologues of cucurbiturils i. e., CB [5], CB [6], CB [7], CB [8], etc. These pumpkin shaped compounds have a sufficiently large hydrophobic internal cavity of~5.5 which is accessible through two carbonyl fringed hydrophilic portals of~4 diameters for strong interactions with hydrophobic molecules.…”

Section: Introductionmentioning

confidence: 99%

“…[20] Several host-guest binding studies have been reported on cucurbiturils like host molecules. [21] For instance CB [7] was indicated as a drug delivery agent for the cancer drug, oxaliplatin. [22] It is also known that cucurbiturils can strongly bind to hydrocarbons; for example, CB [5] and CB [6] can hold small gas molecules, aliphatic and unsubstituted aromatic guests, while CB [7] can host a few substituted aromatic guests.…”

Section: Introductionmentioning

confidence: 99%

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Ecocompatible Halloysite/Cucurbit[8]uril Hybrid as Efficient Nanosponge for Pollutants Removal

et al. 2016

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Hybrid materials based on halloysite nanotubes (HNT) and cucurbit [8]uril (CB[8]) were prepared with the aim to obtain efficient nanosponges towards hydrocarbons both in liquid and vapor phases. The loading on both HNT surfaces and the hybrid morphology were evidenced by FTIR spectroscopy, thermogravimetric analysis and scanning electron microscopy. In order to highlight the interactions in the hybrid 13 C { 1 H} CP-MAS NMR experiments were performed. The aqueous colloidal stability of HNT/CB[8] was highlighted through z potential and dynamic light scattering measurements. The HNT/CB[8] composite was employed as nanosponge to capture aromatic oils in aqueous phase as evidenced by fluorescence emission spectra of pyrene. These results were correlated with the adsorption capacity of the hybrid toward toluene in vapor phase. This paper provides an efficient way to prepare a biocompatible hybrid material that could be used as a potential multi-pockets nano-container for decontamination of polluted water and/or air.

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Section: Introductionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecocompatible Halloysite/Cucurbit[8]uril Hybrid as Efficient Nanosponge for Pollutants Removal

et al. 2016

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“…As a widely used environmentally friendly clay tubes, HNTs have good biocompatibility [13]. HNTs were confirmed have non-toxic not only in vivo [10], but also in vitro [14].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances on Surface Modification of Halloysite Nanotubes for Multifunctional Applications

Yang¹,

Chen²,

Fan³

et al. 2017

Preprint

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Halloysite nanotubes (HNTs) are natural occurring mineral clay nanotubes that have excellent application potential in different fields. However, HNTs are affected by size effect, surface electron effect and hydrogen bond formation on the surface which lead to weak affinity and prone to reunion at some extent. It is very significant to modify the HNTs' surface for expand its applications. In this review, the structural characteristics, performance and the related applications of surface modification HNTs are reviewed and summarized. we focus on the surface modified methods of HNTs, the effect of surface modification on materials and its related applications in various regions. In addition, future prospects and the meaning of surface modification have been discussed in HNTs studies. This review provided a reference for the application of HNTs modifications in new fields.

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“…Compared to other nanoparticles such as organic carbon nanotubes, this kind of inorganic tube is naturally occurring, cheap, abundantly available, and bio- 4,5 and eco-compatible. 6 Chemically, HNTs are constituted by siloxane groups on the external surface, while the aluminol groups are located in the inner lumen.…”

Section: ■ Introductionmentioning

confidence: 99%

Synthesis and Characterization of Halloysite–Cyclodextrin Nanosponges for Enhanced Dyes Adsorption

Massaro

Colletti

Lazzara

et al. 2017

ACS Sustainable Chem. Eng.

127

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Inorganic−organic nanosponge hybrids based on halloysite clay and organic cyclodextrin derivatives (HNT-CDs) were developed by means of microwave irradiations in solvent-free conditions. The HNT-CDs nanomaterials characterized by FT-IR, TGA, BET, TEM, SEM, DLS, and ζ-potential have showed a hyper-reticulated network which possesses both HNT and cyclodextrin peculiarities. The new HNT-CDs nanosponge hybrids were employed as nanoadsorbents, first choosing Rhodamine B as the dye model, and furthermore for the removal of some cationic and anionic dyes, under different pH values (1.0, 4.54, and 7.4). The collected results showed that the pH solution as well as the electrostatic interactions affect the adsorption process. Factors controlling the adsorption process were discussed. The experimental adsorption equilibrium and kinetic data were best described by the Freundlich isotherm model. Excellent adsorption efficiency for cationic dyes were observed with respect to anionic ones. The results suggest that HNT-CDs nanosponge hybrids are a good nanoadsorbent for selective adsorption of cationic dyes with respect to the anionic ones from aqueous solutions.

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Evaluation of toxicity of nanoclays and graphene oxide in vivo: a Paramecium caudatum study

Abstract: We report here the successful use of a protozoan model organism P. caudatum to investigate the toxicity of clay nanoparticles (montmorillonite, halloysite, kaolin, and bentonite), silica nanospheres and graphene oxide nanoflakes.

Cited by 161 publications

References 47 publications

Ecocompatible Halloysite/Cucurbit[8]uril Hybrid as Efficient Nanosponge for Pollutants Removal

Ecocompatible Halloysite/Cucurbit[8]uril Hybrid as Efficient Nanosponge for Pollutants Removal

Recent Advances on Surface Modification of Halloysite Nanotubes for Multifunctional Applications

Synthesis and Characterization of Halloysite–Cyclodextrin Nanosponges for Enhanced Dyes Adsorption

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