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Manjunatha J, Deraman M, Basri N, Talib I. Fabrication of poly (Solid Red A) modified carbon nano tube paste electrode and its application for simultaneous determination of epinephrine, uric acid and ascorbic acid. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2014.10.009] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Price GJ, Nawaz M, Yasin T, Bibi S. Sonochemical modification of carbon nanotubes for enhanced nanocomposite performance. ULTRASONICS SONOCHEMISTRY 2018; 40:123-130. [PMID: 28274544 DOI: 10.1016/j.ultsonch.2017.02.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
Multi-walled carbon nanotubes (CNTs) have been treated using 20kHz ultrasound in combination with dilute nitric and sulfuric acids at much lower concentrations than previously reported. The measurements revealed an optimum set of sonication conditions (in this case 30min at 12Wcm-2) exists to overcome aggregation of the nanotubes and to allow efficient dispersion in ethanol or in chitosan. Transmission electron microscopy and Raman spectroscopy suggested the removal of amorphous material and reduction of the CNT diameter as well as modifications to their defect structures. The surface oxidation was determined by FTIR spectroscopy. At longer times or higher ultrasound intensities, degradation such as nanotube shortening and additional defect generation in the graphitic network occurred and the benefits of using ultrasound decreased. The modified CNTs were used as fillers for chitosan films and gave a tenfold increase in tensile strength and integrity of the films. The methodology was combined with sonochemical generation of gold or iron oxide nanoparticles to produce a range of functional membranes for catalytic reductive hydrogenation or dye degradation under conditions that are more environmentally benign than those previously used. Our results further add to the usefulness of sonochemistry as a valuable tool in preparative materials chemistry but also illustrate the crucial importance of careful control over the experimental conditions if optimum results are to be obtained.
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Affiliation(s)
- Gareth J Price
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Mohsan Nawaz
- Department of Chemistry, Hazara University, Mansehra, Pakistan
| | - Tariq Yasin
- Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
| | - Saira Bibi
- Department of Chemistry, Hazara University, Mansehra, Pakistan; Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
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Jain SM, Cesano F, Scarano D, Edvinsson T. Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates. Phys Chem Chem Phys 2017; 19:30667-30674. [PMID: 29119158 DOI: 10.1039/c7cp06973a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Carbon nanotubes (CNTs) are considered promising for a large range of emerging technologies ranging from advanced electronics to utilization as nanoreactors. Here we report a controlled facile synthesis of aligned carbon nanotubes with very small dimensions directly grown on steel grid substrates via two-step catalytic chemical vapor deposition (CCVD) of a molecular catalyst (ferrocene) with ethylene as the carbon source. The system is characterized by resonance Raman spectroscopy and the results show single walled carbon nanotube (SWCNT) arrays composed of 0.80 nm to 1.24 nm semiconducting CNTs, as analyzed using Kataura analysis, which is approaching the lowest diameters attainable for SWCNTs. The G+ and G- mode splitting, G- line shapes and ring breathing modes (RBMs) are analyzed to characterize the CNTs. The approach results in close packed and vertically aligned SWCNT bundles formed into hair shapes, with some contribution from multiwall CNTs (MWCNTs). IR spectroscopy is utilized to characterize the edge/defect states that have the ability to form esters and ether bonds in the as-prepared CNTs. The stepwise deposition of the catalyst followed by the carbon source gives control over the formation of small diameter single walled carbon nanotubes (SWCNTs). The utilization of molecular catalysts for narrow diameter growth directly on steel grid substrates forms a promising approach for producing cost-effective CNT substrates for a plethora of sensing and catalytic applications.
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Affiliation(s)
- Sagar Motilal Jain
- SPECIFIC, College of Engineering Swansea University Bay Campus, Fabian Way, SA1 8EN Swansea, UK
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Cravanzola S, Cesano F, Gaziano F, Scarano D. Carbon Domains on MoS 2/TiO 2 System via Catalytic Acetylene Oligomerization: Synthesis, Structure, and Surface Properties. Front Chem 2017; 5:91. [PMID: 29209606 PMCID: PMC5701632 DOI: 10.3389/fchem.2017.00091] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 10/23/2017] [Indexed: 12/12/2022] Open
Abstract
Carbon domains have been obtained at the surface of a MoS2/TiO2 (Evonik, P25) system via oligomerization and cyclotrimerization reactions involved in the interaction of the photoactive material with acetylene. Firstly, MoS2 nanosheets have been synthesized at the surface of TiO2, via sulfidation of a molybdenum oxide precursor with H2S (bottom-up method). Secondly, the morphology and the structure, the optical and the vibrational properties of the obtained materials, for each step of the synthesis procedure, have been investigated by microscopy and spectroscopy methods. In particular, transmission electron microscopy images provide a simple tool to highlight the effectiveness of the sulfidation process, thus showing 1L, 2L, and stacked MoS2 nanosheets anchored to the surface of TiO2 nanoparticles. Lastly, in-situ FTIR spectroscopy investigation gives insights into the nature of the oligomerized species, showing that the formation of both polyenic and aromatic systems can be taken into account, being their formation promoted by both Ti and Mo catalytic sites. This finding gives an opportunity for the assembly of extended polyenic, polyaromatic, or mixed domains firmly attached at the surface of photoactive materials. The presented approach, somehow different from the carbon adding or doping processes of TiO2, is of potential interest for the advanced green chemistry and energy conversion/transport applications.
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Affiliation(s)
| | - Federico Cesano
- Department of Chemistry and Nanostructured Interfaces and Surfaces, Interdepartmental Centre and INSTM Centro di Riferimento, University of Turin, Turin, Italy
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Cesano F, Rahman MM, Bardelli F, Damin A, Scarano D. Magnetic Hybrid Carbon via Graphitization of Polystyrene-co-Divinylbenzene: Morphology, Structure and Adsorption Properties. ChemistrySelect 2016. [DOI: 10.1002/slct.201600278] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Federico Cesano
- Dept. of Chemistry, NIS; Nanostructured Interfaces and Surfaces); Interdepartmental Centre; University of Torino; Via P. Giuria, 7 10125 Torino Italy
| | - Mastabur M. Rahman
- Dept. of Chemistry, NIS; Nanostructured Interfaces and Surfaces); Interdepartmental Centre; University of Torino; Via P. Giuria, 7 10125 Torino Italy
| | - Fabrizio Bardelli
- Dept. of Chemistry, NIS; Nanostructured Interfaces and Surfaces); Interdepartmental Centre; University of Torino; Via P. Giuria, 7 10125 Torino Italy
| | - Alessandro Damin
- Dept. of Chemistry, NIS; Nanostructured Interfaces and Surfaces); Interdepartmental Centre; University of Torino; Via P. Giuria, 7 10125 Torino Italy
| | - Domenica Scarano
- Dept. of Chemistry, NIS; Nanostructured Interfaces and Surfaces); Interdepartmental Centre; University of Torino; Via P. Giuria, 7 10125 Torino Italy
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6
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Yu F, Ma J, Wang J, Zhang M, Zheng J. Magnetic iron oxide nanoparticles functionalized multi-walled carbon nanotubes for toluene, ethylbenzene and xylene removal from aqueous solution. CHEMOSPHERE 2016; 146:162-72. [PMID: 26714299 DOI: 10.1016/j.chemosphere.2015.12.018] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/03/2015] [Accepted: 12/06/2015] [Indexed: 05/26/2023]
Abstract
An effectively and functionally magnetic multi-walled carbon nanotube (MWCNTs) nano-composite (APCNT-KOH) was synthesized by a one-pot and facile method. The residual Fe catalyst particles of the as-prepared MWCNTs were utilized as magnetic materials through KOH activation. The resulting APCNT-KOH exhibited very high adsorption capacities for toluene (T), ethylbenzene (E), and xylene (X) (TEX) pollutants than many other adsorbents, because of their large specific surface area and high degree of surface activity. The adsorption process was found to be pH, ionic strength, and temperature dependent, and the maximum adsorption capacity was observed at pH 6 for TEX pollutants. The adsorption isotherm data were analyzed by applying the Langmuir, Freundlich, and Dubinin-Radushkevich isothermal models. The Langmuir model showed the best fit to the experimental isotherm data with a maximum adsorption capacity(qm,toluene = 63.34 mg/g, qm, ethylbenzene = 249.44 mg/g, qm,m-xylene = 227.05 mg/g, qm,o-xylene = 138.04 mg/g, qm,p-xylene = 105.59 mg/g). Adsorption kinetics of TEX on APCNT-KOH was appropriately described by the pseudo-second-order rate model. The desorption experiments revealed the typical adsorption-desorption hysteresis, indicating that the adsorption and desorption processes of TEX undergo different pathways due to porous structure changes before and after adsorption and desorption. Collective results demonstrate that the functionalized magnetic APCNT-KOH composites are highly-effective adsorbents for TEX removal, which provides a promising and green route for MWCNTs in wastewater treatment.
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Affiliation(s)
- Fei Yu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Hai Quan Road, Shanghai 201418, China; State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Jie Ma
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Hai Quan Road, Shanghai 201418, China; State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Juan Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Hai Quan Road, Shanghai 201418, China
| | - Mingzheng Zhang
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH, 44325, USA
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH, 44325, USA.
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Cappelletti L, Vaghi L, Rinaldi L, Rotolo L, Palmisano G, Cravotto G, Penoni A. One-pot sonochemical synthesis of ferrocenyl derivatives via a three-component reaction in aqueous media. ULTRASONICS SONOCHEMISTRY 2015; 27:30-36. [PMID: 26186817 DOI: 10.1016/j.ultsonch.2015.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 03/28/2015] [Accepted: 04/14/2015] [Indexed: 06/04/2023]
Abstract
An ultrasound-assisted three-component, one-pot domino reaction with ferrocenecarboxaldehyde is herein reported. The sequence of reactions entails the allylindation and dehydrative alkylation of stabilized C-nucleophiles (e.g. electron-rich-(hetero)aromatics and stabilized enols) and N-nucleophiles (e.g. azoles). Sonochemical reactions have been performed in three different high-intensity reactors: a bath (20.3 kHz, 60 W), as well as two cup horns working at 19.9 kHz (75 W) and 300.5 kHz (70 W) giving a library of 18 new ferrocenyl derivatives.
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Affiliation(s)
- Luca Cappelletti
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Luca Vaghi
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Laura Rinaldi
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Laura Rotolo
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Giovanni Palmisano
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Andrea Penoni
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
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Cintas P, Tagliapietra S, Caporaso M, Tabasso S, Cravotto G. Enabling technologies built on a sonochemical platform: challenges and opportunities. ULTRASONICS SONOCHEMISTRY 2015; 25:8-16. [PMID: 25547851 DOI: 10.1016/j.ultsonch.2014.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 10/25/2014] [Accepted: 12/08/2014] [Indexed: 05/13/2023]
Abstract
Scientific and technological progress now occurs at the interface between two or more scientific and technical disciplines while chemistry is intertwined with almost all scientific domains. Complementary and synergistic effects have been found in the overlay between sonochemistry and other enabling technologies such as mechanochemistry, microwave chemistry and flow-chemistry. Although their nature and effects are intrinsically different, these techniques share the ability to significantly activate most chemical processes and peculiar phenomena. These studies offer a comprehensive overview of sonochemistry, provide a better understanding of correlated phenomena (mechanochemical effects, hot spots, etc.), and pave the way for emerging applications which unite hybrid reactors.
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Affiliation(s)
- Pedro Cintas
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias-UEX, Avda de Elvas s/n, E-06006 Badajoz, Spain
| | - Silvia Tagliapietra
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125 Turin, Italy
| | - Marina Caporaso
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125 Turin, Italy
| | - Silvia Tabasso
- Dipartimento di Chimica, University of Turin, Via P. Giuria 7, 10125 Turin, Italy
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125 Turin, Italy
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9
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Steimecke M, Rümmler S, Bron M. The effect of rapid functionalization on the structural and electrochemical properties of high-purity carbon nanotubes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.142] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Cravanzola S, Jain SM, Cesano F, Damin A, Scarano D. Development of a multifunctional TiO2/MWCNT hybrid composite grafted on a stainless steel grating. RSC Adv 2015. [DOI: 10.1039/c5ra15003e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A multifunctional TiO2/MWCNT hybrid material grafted on durable and thermally inert stainless-steel grating is proposed, thus combining photodegradation with magnetic properties, which makes the recovery of a solution from a photocatalyst easier.
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Affiliation(s)
- Sara Cravanzola
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre and INSTM Centro Di Riferimento
- University of Torino
- 10125 Torino
- Italy
| | - Sagar M. Jain
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre and INSTM Centro Di Riferimento
- University of Torino
- 10125 Torino
- Italy
| | - Federico Cesano
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre and INSTM Centro Di Riferimento
- University of Torino
- 10125 Torino
- Italy
| | - Alessandro Damin
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre and INSTM Centro Di Riferimento
- University of Torino
- 10125 Torino
- Italy
| | - Domenica Scarano
- Department of Chemistry
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre and INSTM Centro Di Riferimento
- University of Torino
- 10125 Torino
- Italy
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Cintas P, Cravotto G, Barge A, Martina K. Interplay Between Mechanochemistry and Sonochemistry. Top Curr Chem (Cham) 2014; 369:239-84. [PMID: 25860254 DOI: 10.1007/128_2014_623] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ultrasonic irradiation-based mechanochemical strategies have recently been the subject of intensive investigation because of the advantages they offer. These include simplicity, energy savings and wide applicability. Traditional areas of sonoprocessing such as cleaning, efficient mixing and solid activation have been extended to both macromolecular and micro/nanostructures, some of which are biologically significant, ultrasound-responsive actuators and crystal design, among others. Unlike conventional mechanochemical protocols, which require little solvent usage if any at all, mechanical (and chemical) effects promoted by ultrasound are observed in a liquid medium. Tensile forces, which share similarities with solid mechanochemistry, are generated by virtue of nonlinear effects, notably cavitation, when high-amplitude waves propagate in a fluid. This work aims to provide insight into some recent developments in the multifaceted field of sono-mechanochemistry using various examples that illustrate the role of ultrasonic activation, which is capable of boosting hitherto sterile transformations and inventing new crafts in applied chemistry. After a preliminary discussion of acoustics, which is intended to provide a mechanistic background, we mainly focus on experimental developments, while we often mention emerging science and occasionally delve into theoretical models and force simulations.
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Affiliation(s)
- Pedro Cintas
- Departamento de Química Orgánica e Inorgánica, Universidad de Extremadura, Avenida de Elvas s/n, 06006, Badajoz, Spain.
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS, Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125, Turin, Italy.
| | - Alessandro Barge
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS, Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125, Turin, Italy
| | - Katia Martina
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS, Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, 10125, Turin, Italy
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Inhibition of catecholamine secretion by iron-rich and iron-deprived multiwalled carbon nanotubes in chromaffin cells. Neurotoxicology 2013; 39:84-94. [PMID: 23999117 DOI: 10.1016/j.neuro.2013.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 07/23/2013] [Accepted: 08/21/2013] [Indexed: 01/26/2023]
Abstract
The assay of the toxic effects of carbon nanotubes (CNTs) on human health is a stringent need in view of their expected increasing exploitation in industrial and biomedical applications. Most studies so far have been focused on lung toxicity, as the respiratory tract is the main entry of airborne particulate, but there is also recent evidence on the existence of toxic effects of multiwalled carbon nanotubes (MWCNTs) on neuronal and neuroendocrine cells (Belyanskaya et al., 2009; Xu et al., 2009; Gavello et al., 2012). Commercial MWCNTs often contain large amounts of metals deriving from the catalyst used during their synthesis. Since metals, particularly iron, may contribute to the toxicity of MWCNTs, we compared here the effects of two short MWCNTs samples (<5μm length), differing only in their iron content (0.5 versus 0.05% w/w) on the secretory responses of neurotransmitters in mouse chromaffin cells. We found that both iron-rich (MWCNT+Fe) and iron-deprived (MWCNT-Fe) samples enter chromaffin cells after 24h exposure, even though incorporation was attenuated in the latter case (40% versus 78% of cells). As a consequence of MWCNT+Fe or MWCNT-Fe exposure (50-263μg/ml, 24h), catecholamine secretion of chromaffin cells is drastically impaired because of the decreased Ca(2+)-dependence of exocytosis, reduced size of ready-releasable pool and lowered rate of vesicle release. On the contrary, both MWCNTs were ineffective in changing the kinetics of neurotransmitter release of single chromaffin granules and their quantal content. Overall, our data indicate that both MWCNT samples dramatically impair secretion in chromaffin cells, thus uncovering a true depressive action of CNTs mainly associated to their structure and degree of aggregation. This cellular "loss-of-function" is only partially attenuated in iron-deprived samples, suggesting a minor role of iron impurities on MWCNTs toxicity in chromaffin cells exocytosis.
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Aldieri E, Fenoglio I, Cesano F, Gazzano E, Gulino G, Scarano D, Attanasio A, Mazzucco G, Ghigo D, Fubini B. The role of iron impurities in the toxic effects exerted by short multiwalled carbon nanotubes (MWCNT) in murine alveolar macrophages. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2013; 76:1056-1071. [PMID: 24188191 DOI: 10.1080/15287394.2013.834855] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Lung toxicity mediated by multiwalled carbon nanotubes (MWCNT) has been widely demonstrated and recently associated with induction of carcinogenic asbestos-like effects, but the chemical features that drive this toxic effect have still not been well elucidated. The presence of metals as trace contaminants during MWCNT preparation, in particular iron (Fe) impurities, plays an important role in determining a different cellular response to MWCNT. Our goal was to clarify the mechanisms underlying MWCNT-induced toxicity with correlation to the presence of Fe impurities by exposing murine alveolar macrophages to two different MWCNT samples, which differed only in the presence or absence of Fe. Data showed that only Fe-rich MWCNT were significantly cytotoxic and genotoxic and induced a potent cellular oxidative stress, while Fe-free MWCNT did not exert any of these adverse effects. These results confirm that Fe content represents an important key constituent in promoting MWCNT-induced toxicity, and this needs to be taken into consideration when planning new, safer preparation routes.
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Affiliation(s)
- E Aldieri
- a Department of Oncology , University of Torino , Torino , Italy
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Electrocatalytic and simultaneous determination of isoproterenol, uric acid and folic acid at molybdenum (VI) complex-carbon nanotube paste electrode. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.09.017] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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