Surface modification of carbon black nanoparticles by dodecylamine: Thermal stability and phase transfer in brine medium

Soares, Meiriane Cristina Faria; Viana, Marcelo Machado; Schaefer, Zachary L.; Gangoli, Varun Shenoy; Cheng, Yinhong; Caliman, Vinicius; Wong, Michael S.; Silva, Glaura G.

doi:10.1016/j.carbon.2014.02.008

Cited by 68 publications

(39 citation statements)

References 31 publications

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“…One can observe that the peak intensities decreased after each step of the surface treatment. Presumably, the surface modifications involving a strong oxidant have a significant effect on the aromaticity of the CNT and damage the CNT walls [18,27,33,34]. As results, the samples show a decreased of sp 2 C C species after the treatment [18,33].…”

Section: Resultsmentioning

confidence: 82%

“…The deconvoluted XPS C1s spectra (Fig. 3a-c) show a main peak at 284.4 eV for all samples, which can be assigned to sp 2 hybridized carbon atoms of the nanotube structure [18]. The peak centered at 285.2 eV, can be assigned to sp 3 C CH bonds, and it is related to defect sites on the CNT walls [18,31].…”

Section: Resultsmentioning

confidence: 95%

“…Further confirmation of the oxidation process is appearance of bands at 2920 and 2850 cm −1 , which may be assigned to asymmetric (v a CH 2 ) and symmetric (v s CH 2 ) stretching vibrations of methylene group, respectively [20,27]. The appearance of bands at 2920 and 2850 cm −1 may be attributable to loss of aromaticity (oxidation of sp 2 carbon hybridization) in rings of CNTs caused by oxygened functional groups anchored to carbon atoms in CNT-Ac [18,26,27]. Therefore, the appearance of oxygenated groups and the modification of nanotube aromatic structure indicate that the surface was successfully modified by the acid.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 3d shows the N1s curve fitting and it is usually deconvoluted in three components at 400.1 eV (N C), 398.9 eV (NH 2 C) and 401.5 eV (N O) [18]. The deconvoluted XPS C1s spectrum (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…These forces give rise to the formation of aggregates, which in turn make it difficult the CNT dispersion in organic solvents and polymers [16]. Therefore, the manufacture of carbon nanotubes with good dispersion and stability has been a challenging and great labor-intensive task [17,18].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Ferreira

Francisco

Menezes

et al. 2015

Applied Surface Science

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Ferreira

Francisco

Menezes

et al. 2015

Applied Surface Science

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Surface functionalized Fe₃O₄‐polyacrylamide dispersion for improved oil recovery at harsh conditions

Haruna

Wen

2023

J of Applied Polymer Sci

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With the growing demand for energy supply and the natural decline of oil reservoirs, the development of new enhanced oil recovery (EOR) techniques become more and more critical. Polymer flooding EOR is one of the most successful chemical EOR methods but suffers many drawbacks at high temperatures and high salinity (HT‐HS) conditions. Superparamagnetic nanoparticles (NPs) have been recently investigated for subsurface applications, including in EOR, due to their unique physicochemical properties. Their applicability under harsh reservoir conditions, however, is yet to be examined. In this work, a novel approach is developed to synthesize superparamagnetic Fe3O4 (NPs) with unique surface functionalization (SMag‐NPs) and to form stable polyacrylamide (PAM) dispersions (SMag‐NPs‐PAM). Both stability and core flooding experiment results demonstrate the promising future of the new dispersion. The SMag‐NPs‐PAM dispersion is not only stable at HT‐HS conditions, but also show excellent EOR capability at HT‐HS by recovering, 61.72% of the initial oil quantity, which is significantly higher than those from conventinal NPs‐PAM disperison and pure PAM fluid. These findings show the promising application potential of SMag‐NPs‐PAM for improving oil recovery in challenging HT‐HS reservoir conditions.

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Surface modification of commercial carbon black by silane coupling agents for improving dispersibility in rubber compounds

Jaberi Mofrad,

Ostad Movahed,

Ahmadpour

2024

J of Applied Polymer Sci

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The dispersion of a filler in a rubber matrix is a crucial parameter affecting the mechanical and dynamical properties of a rubber compound. It is the current issue of the rubber compounding industry because, most fillers are categorized as a mineral, while the rubber is an organic material. The surface modification of the filler has been accepted as an effective technique for the improvement of the abovementioned parameter. First, the surface premodification of commercial carbon black with a grade of N660 (CB) was implemented by four different oxidation methods. After that, among of used methods, the oxidation method using citric acid was selected to produce modified carbon black (CB‐Oxi) for further treatment. Subsequently, the coupling agent, Bis[3‐(triethoxysilyl)propyl] tetrasulfide (TESPT) was functionalized on the surface of CB‐Oxi to produce modified‐CB‐Oxi. Also, for comparison purposes, the TESPT functionalization was accomplished on untreated CB to form modified‐CB. The FTIR spectra of CB‐Oxi showed using the premodification method introduced the hydroxyl and carboxyl groups on the surface of CB. The correspondent spectra for modified‐CB‐Oxi confirmed the existence of silane groups on the surface of the carbon black. However, the mentioned silane groups were not observed on the surface of modified‐CB. The findings were strengthened by several characteristic techniques including, FESEM, XRD, EDS, CHNS elemental analysis, and RAMAN spectra. The FESEM graphs and elemental mapping showed homogeneous dispersion and uniform distribution of sulfur and silicon elements on the modified‐CB‐Oxi surface. According to RAMAN spectra, the disturbance in the structure of carbon black graphite was reduced after surface modification. modified‐CB‐Oxi is proposed as a potential substitute filler for current commercial carbon black in rubber compounding.

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Surface modification of carbon black nanoparticles by dodecylamine: Thermal stability and phase transfer in brine medium

Cited by 68 publications

References 31 publications

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Surface functionalized Fe₃O₄‐polyacrylamide dispersion for improved oil recovery at harsh conditions

Surface modification of commercial carbon black by silane coupling agents for improving dispersibility in rubber compounds

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Surface modification of carbon black nanoparticles by dodecylamine: Thermal stability and phase transfer in brine medium

Cited by 68 publications

References 31 publications

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Carbon nanotube functionalized with dodecylamine for the effective dispersion in solvents

Surface functionalized Fe3O4‐polyacrylamide dispersion for improved oil recovery at harsh conditions

Surface modification of commercial carbon black by silane coupling agents for improving dispersibility in rubber compounds

Contact Info

Product

Resources

About

Surface functionalized Fe₃O₄‐polyacrylamide dispersion for improved oil recovery at harsh conditions