Effect of carbon nanofiber functionalization on the adsorption properties of volatile organic compounds

Cuervo, Montserrat R.; Asedegbega–Nieto, Esther; Dı́az, Eva; Vega, Aurelio; Ordóñez, Salvador; Castillejos, Eva; Rodrı́guez-Ramos, I.

doi:10.1016/j.chroma.2008.02.061

Cited by 73 publications

(34 citation statements)

References 30 publications

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“…Thus, ACNF15-850-w70 with the highest oxygen content exhibits a close adsorption capacity of benzene with ACNF15-850-w30. Cuervo et al (2008) described that carbon nanofibers after oxidation had more carboxyl and anhydride on the surface, resulting in lower adsorption capacities for benzene and toluene. The lowest content of carboxyl groups on the surface of ACNF15-850-w80 among three samples may contribute to the best adsorption performance of benzene on ACNF15-850-w80.…”

Section: Adsorption Characteristics Of Acnfs With Different Burn-offsmentioning

confidence: 98%

“…Usually, porous carbon materials, such as activated carbons (ACs) and activated carbon fibers (ACFs) are common adsorbents which are widely studied (Benkhedda et al 2000;Dolidovich et al 1999;Yi et al 2009;Dwivedi et al 2004). Recently, activated carbon nanofibers (ACNFs) have showed great potential in the removal of VOCs due to their smaller diameter (sub-micrometer) and more developed micropore compared with ACFs (Ramos et al 2010;Shim et al 2006;Oh et al 2008a, b;Cuervo et al 2008;Hsieh and Chou 2006;Lee et al 2010); Tavanai et al (2009) found that the microporosity of ACNFs was more developed than that of ACFs. In spite of lower specific surface area, carbon nanofibers have shown higher adsorption amounts for benzene and toluene, compared to ACs (Jahangiri et al 2011).…”

Section: Introductionmentioning

confidence: 98%

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Adsorption of benzene and ethanol on activated carbon nanofibers prepared by electrospinning

et al. 2013

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Activated carbon nanofibers (ACNFs) were prepared by electrospinning polyacrylonitrile solutions, and subsequent steam activation process. The ACNFs were characterized by scanning electron microscope, X-ray photoelectron spectroscopy and nitrogen adsorption at 77 K. The adsorption equilibrium data for benzene and ethanol were obtained by using static vapor adsorption system. As-prepared ACNFs demonstrate higher adsorption capacities for volatile organic compounds (VOCs) than activated carbon fibers (ACFs) by virtue of smaller diameter and more available adsorption sites on the surface. The adsorption performance of ACNFs increases with the burn-off, as a result of the increased microporosity. In addition, it is noteworthy that surface chemistry has an important effect on the adsorption of polar VOCs. The ACNF with higher oxygen content has a stronger adsorption tendency for ethanol.

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Section: Adsorption Characteristics Of Acnfs With Different Burn-offsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Adsorption of benzene and ethanol on activated carbon nanofibers prepared by electrospinning

et al. 2013

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“…Several methods have been developed, including adsorption, filtration, and thermal oxidation, while adsorption is the preferred technique for controlling gaseous contaminants at low concentration levels because it is efficiency, economical, and easy-to-use. ACNFs have been widely used as gas adsorbents due to the abundant micropores, large surface area, and excellent adsorption capacity [47][48][49]. The forces between gas molecules and adsorbents are the attractive dispersion force and the short-range repulsive forces; in addition, specific molecular interactions (polarization, field dipole, field gradient quadrupole) usually occur as a result of particular geometric and electronic properties of the adsorbent and adsorptive [50,51]; through these forces, the gases could be adsorbed onto the adsorbents.…”

Section: Adsorption Of Toxic Gasesmentioning

confidence: 99%

Adsorbents Based on Electrospun Nanofibers

Wang

2014

Nanostructure Science and Technology

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In the past few decades, removing or controlling the concentration levels of the pollutants including toxic gases, heavy metal ions, and organic contaminants in environmental systems has attracted tremendous attention. Among the numerous approaches, adsorption is considered to be one of the most versatile and promising approach in removing pollutants due to its convenience, ease of operation, simplicity of design, and universal in use. Electrospun nanofibers have unique properties such as large surface area, tailored pore structure, high porosity, and flexibility of surface functionalization, therefore could be used as advanced adsorbents for contaminant removal. Importantly, nanofiber-based adsorbents are expected to possess strong adsorption capacity, fast kinetics, and good reproducibility due to the unique structure of nanofibers. In this chapter, we summarize recent progress in the development of electrospun nanofibrous membrane-based adsorbent for the removal of toxic gases and pollutants in aqueous solution (heavy metal ions and organic contaminants), describe the design of the nanofibrous materials, and discuss their adsorption performance in detail. This chapter might trigger further development and evolution of adsorption based on electrospun nanofibers as one potential to ease the environmental pollution problem.

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“…Linear and cyclic alkanes, aromatic compounds and chlorohydrocarbons were used as model compounds. It was found that both the capacity and strength of adsorption decrease after the oxidant treatment of carbon nanofibers (Cuervo et al, 2008).…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Carbon‐based sorbents in chromatography. New achievements

Cserháti

2009

Biomedical Chromatography

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The newest results in the employment of carbon-based composites in various chromatographic techniques such as gas-liquid chromatography, high-performance liquid chromatography and electrically driven separation techniques for the separation, quantitative determination and identification of a wide variety of compounds in complicated matrices are compiled. The results are concisely described and critically evaluated. The future trends in the application of carbon-based compounds in the chromatographic separation methods are briefly discussed.

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Effect of carbon nanofiber functionalization on the adsorption properties of volatile organic compounds

Cited by 73 publications

References 30 publications

Adsorption of benzene and ethanol on activated carbon nanofibers prepared by electrospinning

Adsorption of benzene and ethanol on activated carbon nanofibers prepared by electrospinning

Adsorbents Based on Electrospun Nanofibers

Carbon‐based sorbents in chromatography. New achievements

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