Enviromentaly Friendly Functionalization of Carboxylated Shortend Multi-Wall Nanotubes with Sunset Yellow Dye

Azizian, Javad; Zomorodbakhsh, Shahab; Shameli, Abolghasem; Entezari, Mohammad Hassan

doi:10.13005/ojc/280117

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Acid solution mixture will attack the double bonding of the carbon in the hexagonal carbon at region 500-1000 cm -1 [2]. It reduces the intensity of the peak elucidates presence of large number, it also said that the peaks around 600 and 800 cm -1 are originated from the C=C bond from aromatic rings form during the oxidation process [17]. While in c), the two prominent peaks at around 1216 cm -1 and 1366 cm -1 proved the successfulness of the citric acid treatment.…”

Section: Resultsmentioning

confidence: 99%

Chemical Surface Modification of CNTs via Three Oxidative Acid Treatments

Gindana

Jamil

Bernard

et al. 2015

AMR

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Carbon nanotubes are commonly used to create polymer-nanotube composite for various applications. To suffice the needs of the emerging interest in utilizing nanotube, a great concern in creating a stable dispersion of the nanotube in solvent emerged. There is a paramount need to enhance the adhesion between the polymer and carbon nanotube to give a homogenous and stable dispersion throughout the polymer matrix. Thus, oxidative acid treatments are often chosen to chemically functionalize carbon nanotube in order to give such dispersing ability to the nanomaterials. In this study, purified multi-walled carbon nanotubes (MWCNTs) is oxidized under the influence of three types of oxidants i) hydrogen peroxide, ii) citric acid monohydrate and iii) mixture of 3:1 sulphuric and nitric acid. All the MWCNTs suspensions ultrasonicated for 8 hours to create opening defects on the MWCNTs to allow the surface modification to occur. In this comparative study of chemically surface modification using oxidative acid treatments, FTIR was used to examine the formation of -OH, -COOH and -C=O groups on the surface of the MWCNTs, TGA and XRD used to determine the thermal behaviour and the crystal structure studies of the modified MWCNTs respectively.

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Section: Resultsmentioning

confidence: 99%

Chemical Surface Modification of CNTs via Three Oxidative Acid Treatments

Gindana

Jamil

Bernard

et al. 2015

AMR

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“…Followed that, Raman spectroscopy was performed for MWCNTs compared to their drug conjugated form. [27][28][29] Nanofluid Preparation…”

Section: Nano-drug Characterizationmentioning

confidence: 99%

“…Several studies demonstrated the possibility of using CNTs as a nanocarrier for TB drug delivery and were conducted to overcoming on antibacterial resistance of TB. 15,28 One study in 2019 reported that chitosan-functionalized CNTs could increase the drug permeability of INH in the treatment of TB in the bone and wound tissues. 33 Also, Barros et al, 34 demonstrated the efficacy of naphthoimidazoles together with INH and rifampin, as the main drugs for controlling tuberculosis.…”

Section: Conclusion and Future Perspectivementioning

confidence: 99%

<p>The Effects Study of Isoniazid Conjugated Multi-Wall Carbon Nanotubes Nanofluid on <em>Mycobacterium tuberculosis</em></p>

Zomorodbakhsh¹,

Abbasian²,

Naghinejad³

et al. 2020

IJN

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Background: Tuberculosis (TB) has always been recognized as one of the fatal infectious diseases, which is caused by Mycobacterium tuberculosis (M.tb). Isonicotinic acid hydrazide or isoniazid (INH) is one of the most commonly utilized drugs in the treatment of TB. Patients need to take 300 mg daily of INH for 6 months in combination with another anti-TB drug and tolerate several side effects of INH. On the other hand, the emergence of resistant strains of anti-TB antibiotics is one of the major problems in the treatment of this disease. So, antimicrobial drug delivery by nanofluids could improve the efficacy, and reduce the adverse effects of antimicrobial drugs. The purpose of this study was to perform a novel method to synthesize INH-conjugated multi-wall carbon nanotubes (MWCNTs) for more effective drug delivery, as well as, TB treatment. Methods: INH-conjugated functionalized MWCNTs were prepared, using a reflux system. The characterization of the obtained nano-drug was performed by the elemental analyses of total nitrogen, hydrogen, carbon and sulfur (CHNS), Raman spectroscopy, Fourier transform infrared (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) methods. The nanofluid of nano-drug was prepared by the ultrasonic method, and the related antibacterial effect studies were carried out on the two strains of M.tb. Results: The antimicrobial effect of INH-conjugated MWCNTs was found to be much better at low concentrations than the pure drug in all of the strains. Conclusion: Since one of the main antimicrobial mechanisms of MWCNTs is through the destruction of the bacterial cell wall, in addition to its antimicrobial effects, it increased the drug delivery of INH at lower doses compared to drug alone. So, the nanofluid, containing INH-conjugated MWCNTs, had a better lethal effect on a variety of M.tb strains than that of the drug alone.

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Mechanisms of Nanoparticle Toxicity

Singh

2016

Engineered Nanoparticles

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Enviromentaly Friendly Functionalization of Carboxylated Shortend Multi-Wall Nanotubes with Sunset Yellow Dye

Cited by 3 publications

References 17 publications

Chemical Surface Modification of CNTs via Three Oxidative Acid Treatments

Chemical Surface Modification of CNTs via Three Oxidative Acid Treatments

<p>The Effects Study of Isoniazid Conjugated Multi-Wall Carbon Nanotubes Nanofluid on <em>Mycobacterium tuberculosis</em></p>

Mechanisms of Nanoparticle Toxicity

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