A Study of the Porosity of Activated Carbons Using the Scanning Electron Microscope

Achaw, Osei-Wusu

doi:10.5772/36337

Cited by 27 publications

(19 citation statements)

References 36 publications

(21 reference statements)

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“…The path a molecule takes to reach an adsorption site can be different due to the graphene layering within the carbons. The activation method and starting materials alone of a carbon can produce a variety of pores in the form of thermal cracks, pitting, and pore enlargement (Achaw, 2012). Chiang et al (2001) found that nitrogen adsorption to bituminous carbons revealed slit-shaped capillaries which were formed by aggregates of plates (or chains of carbons), while coconut carbons possessed narrow, slit-like pores.…”

Section: Correlations Between Idcs Rsscts and Pvdsmentioning

confidence: 99%

A rapid kinetic dye test to predict the adsorption of 2-methylisoborneol onto granular activated carbons and to identify the influence of pore volume distributions

2015

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Section: Correlations Between Idcs Rsscts and Pvdsmentioning

confidence: 99%

A rapid kinetic dye test to predict the adsorption of 2-methylisoborneol onto granular activated carbons and to identify the influence of pore volume distributions

2015

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“…The porosity of the electrode can be ascertained from Figure 4, which is a scanning electron microscopy (SEM) image of the MWCNT electrode. Pores are classified according to their size [22]. Table 3 classifies different types of pores along with their sizes.…”

Section: Fabrication Of Mwcnt Electrodementioning

confidence: 99%

“…The major amount of hydrogen stored in solid state is in ultramicropores [23]. Pores are classified according to their size [22]. Table 3 classifies different types of pores along with their sizes.…”

Section: Fabrication Of Mwcnt Electrodementioning

confidence: 99%

Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

2019

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For sustainable and incremental growth, mankind is adopting renewable sources of energy along with storage systems. Storing surplus renewable energy in the form of hydrogen is a viable solution to meet continuous energy demands. In this paper the concept of electrochemical hydrogen storage in a solid multi-walled carbon nanotube (MWCNT) electrode integrated in a modified unitized regenerative fuel cell (URFC) is investigated. The method of solid electrode fabrication from MWCNT powder and egg white as an organic binder is disclosed. The electrochemical testing of a modified URFC with an integrated MWCNT-based hydrogen storage electrode is performed and reported. Galvanostatic charging and discharging was carried out and results analyzed to ascertain the electrochemical hydrogen storage capacity of the fabricated electrode. The electrochemical hydrogen storage capacity of the porous MWCNT electrode is found to be 2.47 wt%, which is comparable with commercially available AB5-based hydrogen storage canisters. The obtained results prove the technical feasibility of a modified URFC with an integrated MWCNT-based hydrogen storage electrode, which is the first of its kind. This is surelya step forward towards building a sustainable energy economy.

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“…COD removal percentages of RO16 solution with time in electrolysis using composite electrodes with different sources of charcoals Anode material is one of the vital part of an anodic oxidation process (Chen 2004). SEM was utilized to study the topography of the charcoals, which give useful information on surface features (Achaw 2012). Figure 6 shows the SEM images of all raw charcoals used.…”

Section: Sugercane Charcoal Mangrove Wood Charcoalmentioning

confidence: 99%

Electrochemical Degradation of Reactive Orange 16 by using Charcoal-Based Metallic Composite Electrodes

Zakaria¹,

Othman²,

Hasan³

et al. 2019

JSM

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The performance of charcoal composite electrodes, by using commercial activated charcoal and charcoals from coconut trunk, mangrove wood, rubber wood, and sugarcane, was compared in an attempt to fabricate effective and low cost electrodes for wastewater treatment in textile industries. Reactive Orange 16 was chosen as a model dye because of its high resistance towards conventional treatment methods, while sodium chloride was selected as a supporting electrolyte. The electrode efficiencies were determined based on the percentage of Reactive Orange 16 decolourisation. The charcoals used, duration of electrolysis, functional groups present in charcoals, Brunauer-Emmett-Teller surface area and production of hypochlorite ion that contribute to the effectiveness of the electrodes were examined. The coconut trunk, rubber wood, sugarcane, mangrove wood, and commercially available activated charcoals that were incorporated into tin composite electrodes were able to degrade Reactive Orange 16 until 98.5%, 96.2%, 83.0%, 71.2%, and 29.6%, respectively, after 20 min of electrolysis. The degradation increases with duration of electrolysis. This study illustrated that the production of hypochlorite ion from sodium chloride in solution was the main factor that enhanced the Reactive Orange 16 colour removal. Adsorption process on the electrode surface did not play any significant role in the dye decolourisation.

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A Study of the Porosity of Activated Carbons Using the Scanning Electron Microscope

Cited by 27 publications

References 36 publications

A rapid kinetic dye test to predict the adsorption of 2-methylisoborneol onto granular activated carbons and to identify the influence of pore volume distributions

A rapid kinetic dye test to predict the adsorption of 2-methylisoborneol onto granular activated carbons and to identify the influence of pore volume distributions

Hydrogen Production and Subsequent Adsorption/Desorption Process within a Modified Unitized Regenerative Fuel Cell

Electrochemical Degradation of Reactive Orange 16 by using Charcoal-Based Metallic Composite Electrodes

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