Comparative study of carbon nanotubes and granular activated carbon: Physicochemical properties and adsorption capacities

Gangupomu, Roja Haritha; Sattler, Melanie L.; Ramirez, David

doi:10.1016/j.jhazmat.2015.09.002

Cited by 61 publications

(18 citation statements)

References 94 publications

(81 reference statements)

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“…range, the growth of bands for the PdN/C catalyst can be attributed mainly to C-N stretching [32] because of the support treatment with nitric acid during the synthesis of the catalyst. Figure 3 shows the Raman spectra of the catalysts and carbon support in the range of 100-2000 cm −1 .…”

Section: Catalysts and Support Characterizationmentioning

confidence: 99%

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High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

Carrara

Betti

Coloma

et al. 2018

International Journal of Chemical Engineering

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A series of low-loaded metallic-activated carbon catalysts were evaluated during the selective hydrogenation of a medium-chain alkyne under mild conditions. e catalysts and support were characterized by ICP, hydrogen chemisorption, Raman spectroscopy, temperature-programmed desorption (TPD), temperature-programmed reduction (TPR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR micro-ATR), transmission electronic microscopy (TEM), and X-ray photoelectronic spectroscopy (XPS). When studying the effect of the metallic phase, the catalysts were active and selective to the alkene synthesis. NiCl/C was the most active and selective catalytic system. Besides, when the precursor salt was evaluated, PdN/C was more active and selective than PdCl/C. Meanwhile, alkyne is present in the reaction media, and geometrical and electronic effects favor alkene desorption and so avoid their overhydrogenation to the alkane. Under mild conditions, nickel catalysts are considerably more active and selective than the Lindlar catalyst.

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Section: Catalysts and Support Characterizationmentioning

confidence: 99%

“…1350 cm −1 are observed, which are the typical signals of the graphite spectrum. e first signal is known as the G band associated with the graphitic order, and the second is named the D band and is attributed to structural defects [32].…”

Section: Catalysts and Support Characterizationmentioning

confidence: 99%

High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

Carrara

Betti

Coloma

et al. 2018

International Journal of Chemical Engineering

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“…For comparison, CVD using methane as the carbon source produced multi-walled CNT with a surface area of 82 m 2 /g (Kuo et al, 2008), whereas multi-walled CNT with a surface area of 187 m 2 /g were reported by Gangupomu et al (2016). As-grown multi-walled CNT with a wide range surface area, from 50 to 150 m 2 /g, have also been reported (Lee & Park, 2012).…”

Section: Surface Area and Pore Structure Of The Cntmentioning

confidence: 99%

The Effect of Metal Loading on the Performance of Tri-metallic Supported Catalyst for Carbon Nanotubes Synthesis from Liquefied Petroleum Gas

Setyopratomo

Wulan²,

Sudibandriyo³

2018

IJTech

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Carbon nanotubes (CNT) were synthesized from liquefied petroleum gas by a chemical vapor deposition method using a Fe-Co-Mo/MgO supported catalyst. Metal loading was varied from 2.5 to 20 wt%. The catalyst with metal loading of 10 wt% produced the highest CNT yield, at 4.55 g CNT/g catalyst. This high CNT yield was attributed to the high pore volume of the catalyst. The diameter of the CNT was quite variable: the outer diameter ranged from about 4 to 12 nm, while the inner diameter ranged from about 2 to 5 nm. The catalyst with 10 wt% metal loading produced CNT with the highest surface area and the largest total pore volume. XRD analysis detected the existence of highly oriented pyrolytic graphite, C(002), at 2 theta ≈ 26 o , which was attributed to the CNT.

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“…Fe 3 O 4 @C core-shell nanoparticles consist of a magnetic core and carbon coating (Figures 1-3), owing its importance to characteristics such as high adsorption, easy magnetic separation and regeneration capacity [12,[15][16][17][18][19][20][21][22][23][24].…”

Section: Fe 3 O 4 @C Core-shell Nanoparticles Characteristicsmentioning

confidence: 99%

“…Several works in the literature show the magnetic separation capacity of Fe 3 O 4 @C core-shell nanoparticles and their application in various effluent treatments [12,[17][18][19][20][21][22][23][24]. Wu et al [17] stated in their study that easy separation is the major priority of magnetic adsorbents.…”

Section: Fe 3 O 4 @C Core-shell Nanoparticles Characteristicsmentioning

confidence: 99%

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mm¹,

Macuvele²,

Müller³

et al. 2017

J Adv Chem Eng

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Journal of Advanced Chemical EngineeringLima et al., J Adv Chem Eng 2017, 7:1 DOI: 10.4172/2090 Volume AbstractCore-shell Fe 3 O 4 @C nanoparticles consist of a magnetic core and carbon coating, and exhibit high adsorptive capacity, easy magnetic separation and reusability. Due to these properties, core-shell Fe 3 O 4 @C nanoparticles have great potential application in adsorption, separation and wastewater treatment. Magnetic separation based on the super paramagnetic Fe 3 O 4 has received considerable attention and is widely used for the removal of dye, oil pharmaceuticals and metals from water due to its high efficiency and economic viability. Therefore, the main characteristics of the core-shell Fe 3 O 4 @C nanoparticles, the different types of synthesis, as well as the main applications for the removal of water pollutants were reviewed. In this brief review, an overview of the basic properties of the Fe 3 O 4 @C core-shell nanoparticles are given, and the most important and more frequently used methods for the synthesis of Fe 3 O 4 @C core-shell nanoparticles have been summarized along with the description of its adsorbent application potential.

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Comparative study of carbon nanotubes and granular activated carbon: Physicochemical properties and adsorption capacities

Cited by 61 publications

References 94 publications

High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

The Effect of Metal Loading on the Performance of Tri-metallic Supported Catalyst for Carbon Nanotubes Synthesis from Liquefied Petroleum Gas

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

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