Establishing structure-property-hazard relationships for multi-walled carbon nanotubes: The role of aggregation, surface charge, and oxidative stress on embryonic zebrafish mortality

Falinski, Mark M.; Garland, Michael A.; Hashmi, Sara M.; Tanguay, Robert L.; Zimmerman, Julie

doi:10.1016/j.carbon.2019.08.063

Cited by 23 publications

(12 citation statements)

References 86 publications

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“…In accordance with well‐established trends, [33,39] the total oxygen concentration increased when pristine MWCNTs were treated with nitric acid and ozone, while high‐temperature annealing of CT−N and CT−P samples decreased overall oxygen concentration, with greater decreases occurring at higher temperatures. As a measure of surface defect concentration, the I D / I G ratio was determined using Raman spectroscopy (for sample spectra, see the Supporting Information, Figure S2).…”

Section: Resultssupporting

confidence: 85%

“…MWCNTs were purchased from CheapTubes (Grafton, VT, USA) and had a reported diameter of 10–20 nm and a reported length of 10–30 μm. After purchase, these were modified by a combination of oxidative processing and high‐temperature annealing, some of which has been previously reported [39] . Pristine CheapTubes samples were referred to as “CT−P”.…”

Section: Methodsmentioning

confidence: 99%

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Performance and Sustainability Tradeoffs of Oxidized Carbon Nanotubes as a Cathodic Material in Lithium‐Oxygen Batteries

et al. 2020

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Climate change mitigation efforts will require a portfolio of solutions, including improvements to energy storage technologies in electric vehicles and renewable energy sources, such as the high‐energy‐density lithium‐oxygen battery (LOB). However, if LOB technology will contribute to addressing climate change, improvements to LOB performance must not come at the cost of disproportionate increases in global warming potential (GWP) or cumulative energy demand (CED) over their lifecycle. Here, oxygen‐functionalized multi‐walled carbon nanotube (O‐MWCNT) cathodes were produced and assessed for their initial discharge capacities and cyclability. Contrary to previous findings, the discharge capacity of O‐MWCNT cathodes increased with the ratio of carbonyl/carboxyl moieties, outperforming pristine MWCNTs. However, increased oxygen concentrations decreased LOB cyclability, while high‐temperature annealing increased both discharge capacity and cyclability. Improved performance resulting from MWCNT post‐processing came at the cost of increased GWP and CED, which in some cases was disproportionately higher than the level of improved performance. Based on the findings presented here, there is a need to simultaneously advance research in improving LOB performance while minimizing or mitigating the environmental impacts of LOB production.

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Section: Resultssupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Performance and Sustainability Tradeoffs of Oxidized Carbon Nanotubes as a Cathodic Material in Lithium‐Oxygen Batteries

et al. 2020

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“…[22] Shape may impact interactions due to the physical nature of a shape where, for example, sharper edges are able to penetrate cells, or due to impacts of shape impacts on aggregation state of the material, as has been found in carbon nanotubes. [23] Alternatively, shape and facets also dictate the surface area available, the available sites of interaction, charge to surface area ratio, and surface Rebecca Klaper is a professor at the School of Freshwater Sciences, University of Wisconsin-Milwaukee. She studies the potential impact of emerging contaminants, such as nanoparticles on aquatic life.…”

Section: All Nanomaterials Are Not Created Equal: Known Characteristimentioning

confidence: 99%

The Known and Unknown about the Environmental Safety of Nanomaterials in Commerce

Klaper

2020

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The widespread nanomaterial use in commercial products has fed significant concern over environmental health and safety ramifications. Initially, little was known as to how these highly reactive particulates interacted with biological systems. Nanomaterials have introduced complexities not normally considered in traditional safety assessments of chemicals and therefore have generated uncertainty in the reliability of standard tests of safety. Advances in understanding the potential impacts of nanomaterials have occurred since their introduction, particularly for those used in the greatest quantities in commerce. The impact of characteristics such as charge, size, surface functionalization, chemical composition, and certain transformations on the potential effect of nanomaterials in the environment continue to move the field forward. However, generalizations of risk based on any one factor across nanomaterials is not possible. Estimating risk also remains difficult due to the introduction of materials that are new and more complex, minimal information on the specific molecular interactions of nanomaterials and organisms, and the need for more tools for measuring the dynamics of nanomaterial state and fate in complex matrices. Finally, exposure estimates are difficult due to difficulty of environmental monitoring which may be exacerbated by lack of information on nanomaterials in products and new uses in the marketplace.

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“…Oxygenized MWCNTs increased embryonic mortality that did not depend on ROS levels. This suggests that not only oxidative stress but also the physicochemical properties of MWCNT play a key role in toxicity [ 71 ]. These results are consistent with a second study in which the toxic effect of short and long MWCNTs differed.…”

Section: Developmental Carbon Nanotoxicitymentioning

confidence: 99%

Reproductive and Developmental Nanotoxicity of Carbon Nanoparticles

et al. 2022

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The presented review aims to summarize the knowledge regarding the reproductive and developmental toxicity of different types of carbon nanoparticles, such as graphene, graphene oxide, multi- and single-walled nanotubes, fullerenes, and nanodiamonds. Carbon nanoparticles have unique chemical and physical properties that make them an excellent material that can be applied in many fields of human activity, including industry, food processing, the pharmaceutical industry, or medicine. Although it has a high degree of biocompatibility, possible toxic effects on different tissue types must also be taken into account. Carbon nanoparticles are known to be toxic to the respiratory, cardiovascular, nervous, digestive system, etc., and, according to current studies, they also have a negative effect on reproduction and offspring development.

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Establishing structure-property-hazard relationships for multi-walled carbon nanotubes: The role of aggregation, surface charge, and oxidative stress on embryonic zebrafish mortality

Cited by 23 publications

References 86 publications

Performance and Sustainability Tradeoffs of Oxidized Carbon Nanotubes as a Cathodic Material in Lithium‐Oxygen Batteries

Performance and Sustainability Tradeoffs of Oxidized Carbon Nanotubes as a Cathodic Material in Lithium‐Oxygen Batteries

The Known and Unknown about the Environmental Safety of Nanomaterials in Commerce

Reproductive and Developmental Nanotoxicity of Carbon Nanoparticles

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