Improving the surface properties of multi-walled carbon nanotubes after irradiation with gamma rays

Safibonab, Behroz; Reyhani, A.; Golikand, Ahmad Nozad; Mortazavi, Seyedeh Zahra; Mirershadi, Soghra; Ghoranneviss, M.

doi:10.1016/j.apsusc.2011.08.085

Cited by 67 publications

(28 citation statements)

References 55 publications

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“…This shows that the bonds are dissociated during irradiation which demolished the structure of CNTs and rearrangements decreased the pores between the carbon layers. The high gamma dose breaks the carbon-carbon bonds of CNTs by different mechanisms which involve breaking, creation and restructuring of the bonds [16]. The reported mechanism for CNTs include: displacing and sputtering of carbon atoms due to energy transfer by high energy radiation on carbon atoms [23].…”

Section: Analysis Of Cntsmentioning

confidence: 99%

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Chitosan/CNTs green nanocomposite membrane: Synthesis, swelling and polyaromatic hydrocarbons removal

Bibi

Yasin

Hassan

et al. 2015

Materials Science and Engineering: C

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Section: Analysis Of Cntsmentioning

confidence: 99%

“…This treatment affected the mechanical and electrical performance of the CNTs. The modification of CNTs with high energy radiations is a fast and more effective method [16]. Radiation has many advantages such as: easy control over its modification, low reaction temperatures, chemical free solvent and time saving [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Chitosan/CNTs green nanocomposite membrane: Synthesis, swelling and polyaromatic hydrocarbons removal

Bibi

Yasin

Hassan

et al. 2015

Materials Science and Engineering: C

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“…After the third cycle, the high degree of swelling in the reaction mixture and lack of mechanical strength caused the membrane to break up and lose its cohesiveness as shown in Fig. 39,45 These interactions not only enhance the mechanical properties of the matrix but also bind the Au-NPs tightly preventing leaching during catalysis. Some reduced catalytic activity was retained since the Au-NPs were still present.…”

Section: Catalysis Studymentioning

confidence: 99%

Eco-friendly synthesis and catalytic application of chitosan/gold/carbon nanotube nanocomposite films

et al. 2016

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a Novel eco-friendly chitosan nanocomposite membranes containing gold nanoparticles and carbon nanotubes (CNTs) have been synthesized. The catalytic activity of the nanocomposites was explored using a model reduction reaction of 4nitrophenol to 4-aminophenol. Kinetic studies demonstrated that the presence of CNTs increased the rate of the reaction, mainly by reducing the induction time. TEM images confirmed the uniform distribution of gold and CNTs in the chitosan matrices. Scanning electron microscopy micrographs revealed that the inclusion of CNTs led to a more compact and less porous network structure which improved the mechanical properties of the films. Catalytically active membranes prepared from the nanocomposites could be reused at least ten times with no loss of mechanical integrity or catalytic effect, opening up the possibility of using this new, environmentally-friendly catalyst support in a continuous flow system.

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“…However, water absorbance slightly increases in the samples coated with PU/irradiated FMWCNT at 150 KGy. This increase may be attributed to the degradation effect of γ‐irradiation on FWMCNT, which has destroyed the nanostructure of carbons, leading to defects in the structure of FMWCNT . It can also be seen that the water uptake decreases by increasing the content of FMWCNT (0.05, 0.1, and 0.2 wt%), due to the hydrogen bond formation and good dispersion shown by FESEM.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, gamma irradiation can be easily controlled and prevent impurities in the materials . Safibonab et al and other researchers have estimated the effect of γ‐rays on the surface area of MWCNTs and have showed larger surface area and pore volume with carbonyl functional groups in MWCNTs irradiated at 100 kGy.…”

Section: Introductionmentioning

confidence: 99%

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

2018

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The aim of this study is to avoid or reduce the risks of biofouling of ship hulls, using polyurethane/γ‐irradiated functionalized multiwall carbon nanotubes (PU/FMWCNT) nanocomposites as a coating for wood. These nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR) measurements, transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM), and hardness, adhesion, and bending of the coated samples were examined. The antifouling ability of PU/γ‐irradiated FMWCNTs was studied by using an algae test. FTIR proved the presence of COOH group on the surface of MWCNT, while the FESEM results showed good dispersion of FMWCNT in polyurethane matrix. Mechanical properties of the coated wooden samples were improved; the samples showed good hardness and very good adhesion, and reasonable flexural modulus. The antifouling property of the coatings showed that 0.1 and 0.2 wt% FMWCNTs immobilized on polyurethane composite and irradiated for 100 kGy, were the most efficient antifouling coat when immersed in Chlorella vulgaris microalgae. POLYM. COMPOS., 39:E1196–E1207, 2018. © 2018 Society of Plastics Engineers

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Improving the surface properties of multi-walled carbon nanotubes after irradiation with gamma rays

Cited by 67 publications

References 55 publications

Chitosan/CNTs green nanocomposite membrane: Synthesis, swelling and polyaromatic hydrocarbons removal

Chitosan/CNTs green nanocomposite membrane: Synthesis, swelling and polyaromatic hydrocarbons removal

Eco-friendly synthesis and catalytic application of chitosan/gold/carbon nanotube nanocomposite films

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

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