Characterization of micro-mesoporous carbon media

Do, D.D.; Nguyen, Cuong V.; Do, H.D.

doi:10.1016/s0927-7757(01)00621-5

Cited by 102 publications

(53 citation statements)

References 43 publications

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“…Pore size distributions (PSD, f V (x) and f S (x) with respect to the pore volume and the specific surface area, respectively) were calculated using overall equation within the framework of Density Functional Theory (DFT) (Do et al 2001;Platzer and Maurer 1989) The differential PSDs f V (x) were converted to incremental PSDs (IPSD). The f V (x) and f S (x) functions were used to calculate contributions of micropores (S * mic , V mic ) at the pore half-width x < 1 nm, mesopores (S * mes , V mes ) at 1 < x < 25 nm, and macropores (S * mac , V mac ) at 25 < x < 100 nm to the specific surface area and the total porosity.…”

Section: Methodsmentioning

confidence: 99%

Hydrothermal modification of carbon adsorbents

et al. 2011

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The effects of high-pressure autoclave treatments on porous structure and surface properties were studied for a variety of activated carbons (AC, synthetic and produced from plum stones) treated with water vapour, hydrogen peroxide (10-50%) or 10% aqueous ammonia solution at relatively low temperatures (250, 350, 400 • C). Surface and structural parameters of modified ACs were determined using nitrogen, water, ammonia and benzene adsorption isotherms. It was found that the effects of AC modification resulting in changes in their porous structure and surface chemistry depend on the kind of initial ACs, modifier type and concentration of modifier and treatment temperature. At the same conditions synthetic ACs are modified to a larger extent than ACs prepared using natural raw materials. Repeated treatment of a given carbon intensifies changes in its porous structure.

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Section: Methodsmentioning

confidence: 99%

Hydrothermal modification of carbon adsorbents

et al. 2011

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“…Pore size distributions (PSD, differential f(R p ) ~ dV p /dR p ) were calculated using the overall isotherm equation (with the framework of Density Functional Theory, DFT [56]) with a model of voids between the spherical particles described elsewhere [57] and solved using a regularization procedure based on the CONTIN algorithm [58]. The differential distribution functions f V (R p ) were converted to incremental PSD (IPSD)…”

Section: Methodsmentioning

confidence: 99%

Titania deposits on nanosilicas

Gun'ko¹,

Богатырев²,

Лебода³

et al. 2009

Annales UMCS, Chemistry

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Titania (content C TiO2 = 2.7-20.0 wt%) was synthesized on different fumed silica substrates (A-50, A-100, A-380) using Ti[OCH(CH 3 ) 2 ] 4 as a precursor interacting with silica/adsorbed water in 2-propanol or CCl 4 medium, dried and then heated at 1073 K for 1 h. Initial and pretreated nanosilicas and titania/silicas were studied using XRD, adsorption, FTIR, TEM, AFM, and TPD-MS methods. The morphology of grafted titania (anatase/rutile/amorphous phase composition, particle size distribution, aggregation, textural porosity) depends on the types of a nanosilica matrix and a solvent, suspension treatments and reaction conditions.

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“…For determining the surface area and pore size distribution of porous carbonaceous materials, this method has been intensively studied and widely used [36,38,[45][46][47][48]. In Figure 4b, we show the adsorbed mass of benzene per mass of FGSs (both measured using the QCM) as a function of the benzene partial pressure, p to which the FGS film was exposed measured as the fraction of the saturation pressure p sat .…”

Section: Electrode Porosity Factormentioning

confidence: 99%

Electrochemical Performance of Graphene as Effected by Electrode Porosity and Graphene Functionalization

et al. 2010

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Graphene-based electrodes have recently gained popularity due to their superior electrochemical properties. However, the exact mechanisms of electrochemical activity are not yet understood. Here, we present data from NADH oxidation and ferri/ferrocyanide redox probe experiments to demonstrate that both (i) the porosity of the graphene electrodes, as effected by the packing morphology, and (ii) the functional group and the lattice defect concentration play a significant role on their electrochemical performance.

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Characterization of micro-mesoporous carbon media

Cited by 102 publications

References 43 publications

Hydrothermal modification of carbon adsorbents

Hydrothermal modification of carbon adsorbents

Titania deposits on nanosilicas

Electrochemical Performance of Graphene as Effected by Electrode Porosity and Graphene Functionalization

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