Understanding the toxicity of carbon nanotubes in the environment is crucial to the control of nanomaterials in producing and processing and the assessment of health risk for human: A review

Du, Jia; Wang, Shutao; You, Hong; Zhao, Xuesong

doi:10.1016/j.etap.2013.05.007

Cited by 160 publications

(96 citation statements)

References 132 publications

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“…The bio-effect of CNTs have evaluated on various organisms, such as aquatic animals, bacteria and higher plants [18]. As showed in our study, it was obvious that MWCNTs promoted the growth of rice roots, shoots and fresh weights after 10days' exposure, which identified with previous studies [19].…”

Section: Discussionsupporting

confidence: 75%

Effect of Different Nanoparticles on Seed Germination and Seedling Growth in Rice

Hao¹,

Zhang²,

Rui³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Section: Discussionsupporting

confidence: 75%

Effect of Different Nanoparticles on Seed Germination and Seedling Growth in Rice

Hao¹,

Zhang²,

Rui³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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“…3 shows bands D, G and G' respectively, as well as the ratio of band D and G (ID/IG) which equals to 1.15. Such band ratio indicates that once the catalyzer is eliminated from the CNTs structure, the walls are shifted generating an increase in the CNTs crystallinity [15].…”

Section: Cnts Synthesismentioning

confidence: 99%

“…Several researchers have emphasized the importance of studying the adverse effects of nanomaterials on the environment and biological tissues. Extensive reviews have provided a better explanation of the many factors behind the nanotoxicology of engineered nanomaterials [15,16]. Physicochemical properties of nanoparticles such as size, chemical composition and surface structure exhibit adverse biological effects at the cellular level.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube dispersion for in-vitro applications

Espinosa

Ortiz

Cornelio

et al. 2017

DYNA

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Carbon nanotubes (CNTs) have gained popularity due to their many characteristics which make them the promising material for biomedical applications. A major challenge when working with CNTs is the difficulty to distribute them evenly throughout liquids. This research is a comparative analysis of the dispersion of multi wall CNTs (MWCNTs) in different liquid media (distilled water, ultrapure water of type I [Milli-Q], ethanol, dimethyl sulfoxide [DMSO] and cell culture medium [RPMI-1640]) by using two different sonication techniques (probetype sonication and ultrasonic bath sonication) as well as determining the effect of sterilization in the presence and absence of fluid before dispersion. The results indicate that the best method to achieve a CNTs dispersion is to use a probe-type sonicator as well as to sterilize the CNTs samples in the presence of fluid.Keywords: Carbon Nanotube; Dispersion; Ultrasound. Dispersión de nanotubos de carbono para aplicaciones in-vitroResumen Los nanotubos de carbono (CNTs) han atraído un enorme interés debido a sus muchas características que los convierten en un material prometedor para aplicaciones biomedicas. Un desafío importante cuando se trabaja con CNTs es la dificultad de dispersarlos homogéneamente en un fluido. Esta investigación es un análisis comparativo de la dispersión de nanotubos de carbono de pared múltiple (MWCNTs) en diferentes fluidos (agua destilada, agua ultrapura de tipo I [Milli-Q], etanol, dimetilsulfóxido [DMSO] y medio de cultivo celular [RPMI-1640]). Utilizando dos diferentes técnicas de sonicación (sonicación con lanza ultrasónica y sonicación ultrasónica de baño), así como la determinación del efecto de la esterilización en presencia y ausencia de fluido antes de la dispersión. Los resultados indican que el mejor método de dispersión de los CNTs es usando un sonicador tipo lanza y esterilizarlos en presencia de fluido.Palabras clave: Nanotubos de Carbono; Dispersión; Ultrasonido.

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“…3,4 However, until previous uncertainties concerning CNTs' prolonged in vivo cytotoxicity as well as relationships between their potential toxicity and 1) morphology/surface chemistry, 2) administration routes, and 3) efficiency of harmless excretion are fully dispelled, the international scientific society cannot cross the threshold of the first medical application. [5][6][7] Since the past several years, CNTs have emerged as new candidates for applications in medical imaging and, currently, this is one of the most attractive fields of scientific investigations. 8,9 Magnetic resonance imaging (MRI), as a noninvasive technique, is applied worldwide and takes on ever-new forms using the developments in computer technology and by enhancing/refining the image with contrast agents (CAs).…”

Section: Introductionmentioning

confidence: 99%

Amalgamation of complex iron(III) ions and iron nanoclusters with MWCNTs as a route to potential T2 MRI contrast agents

Kuźnik¹,

Tomczyk²,

Wyskocka³

et al. 2015

IJN

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Iron-filled multiwall carbon nanotubes (Fe@MWCNTs) were functionalized toward a variety of potential magnetic resonance imaging contrast agents. Oxidized Fe@MWNCTs were covered with PEG5000 via direct esterification or using acyl chloride derivatives. Alternatively, the latter were functionalized with an aminophenol ligand (Fe@O-MWCNT-L). Moreover, pristine Fe@MWCNTs were functionalized with N -phenylaziridine groups (Fe@f-MWCNT) via [2+1] cycloaddition of nitrene. All of these chemically modified nanotubes served as a vehicle for anchoring Fe 3+ ions. The new hybrids – Fe(III)/Fe@(f-/O-)MWCNTs – containing 6%–14% of the “tethered” Fe 3+ ions were studied in terms of the acceleration of relaxation of water protons in nuclear magnetic resonance. The highest transverse relaxivity r 2 =63.9±0.9 mL mg −1 s −1 was recorded for Fe(III)/Fe@O-MWCNT-L, while for Fe(III)/Fe@f-MWCNT, with r 2 =57.9±2.9 mL mg −1 s −1 , the highest impact of the anchored Fe(III) ions was observed. The T 1 / T 2 ratio of 30–100 found for all of the nanotube hybrids presented in this work is a very important factor for their potential application as T 2 contrast agents. Increased stability of the hybrids was confirmed by ultraviolet–visible spectrophotometry.

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Understanding the toxicity of carbon nanotubes in the environment is crucial to the control of nanomaterials in producing and processing and the assessment of health risk for human: A review

Cited by 160 publications

References 132 publications

Effect of Different Nanoparticles on Seed Germination and Seedling Growth in Rice

Effect of Different Nanoparticles on Seed Germination and Seedling Growth in Rice

Carbon nanotube dispersion for in-vitro applications

Amalgamation of complex iron(III) ions and iron nanoclusters with MWCNTs as a route to potential T2 MRI contrast agents

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