Bioaccumulation and biomarker responses of cubic and octahedral Cu2O micro/nanocrystals in Daphnia magna

Fan, Wenhong; Shi, Zhiwei; Yang, Xiuping; Cui, Minming; Wang, Xiaolong; Zhang, Dongfeng; Liu, Hong; Guo, Lin

doi:10.1016/j.watres.2012.08.019

Cited by 49 publications

(33 citation statements)

References 30 publications

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“…This is based on our findings showing that the reactive oxygen species, triggered in bacterial cells after their exposure to CuO NPs, were due to dissolved Cu ions . Additionally, in more complex aquatic organisms like crustaceans D. magna (Blinova et al, 2010;Fan et al, 2012;Heinlaan et al, 2008;Jo et al, 2012) the toxic effects of CuO NPs have often been associated with the soluble fraction of NPs as well. Similarly, inhibition of cholinesterase activity in juvenile carp Cyprinus carpio and interference with zebrafish embryo hatching observed after exposure of these organisms to CuO NPs were mostly due to dissolved Cu ions.…”

Section: Toxicity Of Ag Zno and Cuo Nanoparticles Due To Dissolutionmentioning

confidence: 99%

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

et al. 2013

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Silver, ZnO and CuO nanoparticles (NPs) are increasingly used as biocides. There is however increasing evidence of their threat to ''non-target'' organisms. In such a context, the understanding of the toxicity mechanisms is crucial for both the design of more efficient nanoantimicrobials, i.e. for ''toxic by design'' and at the same time for the design of nanomaterials that are biologically and/or environmentally benign throughout their life-cycle (safe by design). This review provides a comprehensive and critical literature overview on Ag, ZnO and CuO NPs' toxicity mechanisms on the basis of various environmentally relevant test species and mammalian cells in vitro. In addition, factors modifying the toxic effect of nanoparticles, e.g. impact of the test media, are discussed. Literature analysis revealed three major phenomena driving the toxicity of these nanoparticles: (i) dissolution of nanoparticles, (ii) organismdependent cellular uptake of NPs and (iii) induction of oxidative stress and consequent cellular damages. The emerging information on quantitative structure-activity relationship modeling of nanomaterials' toxic effects and the challenges of extrapolation of laboratory results to the environment are also addressed.

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Section: Toxicity Of Ag Zno and Cuo Nanoparticles Due To Dissolutionmentioning

confidence: 99%

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

et al. 2013

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“…It is noteworthy that, although high‐index facets that have high‐density atomic edges with corners and plentiful unsaturated active sites are promising for catalysis and sensing applications, those facets are often unstable, and hardly obtained by traditional chemical methods 17, 18, 19, 20, 21, 22, 23. Thus, the shape‐dependent catalysis and sensing behaviours is primarily focused on NCs enclosed by low‐index facets, especially the three basic facets (i. e., the {100}, {111}, and {110} facets) 6, 7, 8, 9, 12, 13, 14, 16, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34. For instance, by employing hydrofluoric acid as a capping agent (CA), H. G. Yang et al34 were the first to obtain uniform anatase TiO 2 single crystals with a high percentage (47%) of highly reactive {001} facets, which possessed promising applications in sensors, solar cells and photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, the inexpensive, non‐toxic and abundantly available Cu 2 O nanomaterials, with unique optical and electrical properties,4, 9, 10, 53, 54, 55, 56, 57, 58 have recently aroused general attention, due to their outstanding morphology‐dependent applications in catalysis (gas oxidation,2, 3, 17, 59, 60, 61 CO 2 reduction,62, 63, 64, 65 organocatalysis,14, 24, 32, 40, 50, 66 electrocatalysis,28, 67, 68 and photocatalysis36, 44, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, sensing (gas sensors,8, 79, 80, 81, 82, 83 ion detection,29 and surface‐enhanced Raman scattering (SERS)84, 85, 86, 87, 88, 89, as adsorbents,7, 90 biotoxicity,26, 91, 92 as chemical templates35, 38, 45, 4...…”

Section: Introductionmentioning

confidence: 99%

“…Compared to Cu 2 O nanowires72, 81, 104, 105, 106 or nanorods,83, 107 nanospheres,53, 64, 76, 82, 84, 87, 90, 108, 109 hollow structures,42, 57, 67, 73, 79, 94, 95, 101, 110, 111, 112, 113, 114 self‐assembled superstructures,8, 115, 116 and Cu 2 O polyhedra enclosed by high‐index planes,17, 117, 118, 119, 120, 121, 122 the preparation of Cu 2 O polyhedra enclosed by low‐index planes2, 3, 7, 8, 9, 14, 25, 26, 29, 32, 55, 57, 66, 68, 75, 91, 92, 123, 124, 125, 126, 127, 128, 129 is simple and large‐scale. Even more importantly, several novel facet‐controlled routes, including carving,…”

Section: Introductionmentioning

confidence: 99%

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Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

2015

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Shape‐dependent catalysis and sensing behaviours are primarily focused on nanocrystals enclosed by low‐index facets, especially the three basic facets ({100}, {111}, and {110}). Several novel strategies have recently exploded by tailoring the original nanocrystals to greatly improve the catalysis and sensing performances. In this Review, we firstly introduce the synthesis of a variety of Cu2O nanocrystals, including the three basic Cu2O nanocrystals (cubes, octahedra and rhombic dodecahedra, enclosed by the {100}, {111}, and {110} facets, respectively), and Cu2O nanocrystals enclosed by high‐index planes. We then discuss in detail the three main facet‐controlled synthetic strategies (deposition, etching and templating) to fabricate Cu2O‐based nanocrystals with heterogeneous, etched, or hollow structures, including a number of important concepts involved in those facet‐controlled routes, such as the selective adsorption of capping agents for protecting special facets, and the impacts of surface energy and active sites on reaction activity trends. Finally, we highlight the facet‐dependent properties of the Cu2O and Cu2O‐based nanocrystals for applications in photocatalysis, gas catalysis, organocatalysis and sensing, as well as the relationship between their structures and properties. We also summarize and comment upon future facet‐related directions.

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“…The production and use of NMs results in releases that may produce various effects on exposed aquatic organisms. Although not extensive, some studies have been performed that address the toxic effects, mechanism of action in living organisms, bioaccumulation, and bioavailability of NMs (Fouqueray et al 2012, Zhu et al 2010, Fan et al 2012.…”

Section: Introductionmentioning

confidence: 99%

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

Krzyżewska¹,

Kyzioł-Komosińska²,

Rosik-Dulewska³

et al. 2016

Archives of Environmental Protection

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Abstract:The aim of this paper is to present characteristics, toxicity and environmental behavior of nanoparticles (NPs) (silver, copper, gold, zinc oxide, titanium dioxide, iron oxide) that most frequently occur in consumer products. In addition, NPs are addressed as the new aquatic environmental pollutant of the 21 st century. NPs are adsorbed onto particles in the aquatic systems (clay minerals, fulvic and humic acids), or they can adsorb environmental pollutants (heavy metal ions, organic compounds). Nanosilver (nAg) is released from consumer products into the aquatic environment. It can threaten aquatic organisms with high toxicity. Interestingly, copper nanoparticles (Cu-NPs) demonstrate higher toxicity to bacteria and aquatic microorganisms than those of nanosilver nAg. Their small size and reactivity can cause penetration into the tissues and interfere with the metabolic systems of living organisms and bacterial biogeochemical cycles. The behavior of NPs is not fully recognized. Nevertheless, it is known that NPs can agglomerate, bind with ions (chlorides, sulphates, phosphates) or organic compounds. They can also be bound or immobilized by slurry. The NPs behavior depends on process conditions, i.e. pH, ionic strength, temperature and presence of other chemical compounds. It is unknown how NPs behave in the aquatic environment. Therefore, the research on this problem should be carried out under different process conditions. As for the toxicity, it is important to understand where the differences in the research results come from. As NPs have an impact on not only aquatic organisms but also human health and life, it is necessary to recognize their toxic doses and know standards/regulations that determine the permissible concentrations of NPs in the environment.Unauthenticated Download Date | 5/12/18 7:36 AM

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Bioaccumulation and biomarker responses of cubic and octahedral Cu2O micro/nanocrystals in Daphnia magna

Cited by 49 publications

References 30 publications

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

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Bioaccumulation and biomarker responses of cubic and octahedral Cu2O micro/nanocrystals in Daphnia magna

Cited by 49 publications

References 30 publications

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

Mechanisms of toxic action of Ag, ZnO and CuO nanoparticles to selected ecotoxicological test organisms and mammalian cells in vitro: A comparative review

Facet‐Controlled Synthetic Strategy of Cu2O‐Based Crystals for Catalysis and Sensing

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

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Product

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Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing