Carbon coated monolith, a mesoporous material for the removal of methyl orange from aqueous phase: Adsorption and desorption studies

Hosseini, Soraya; Khan, Moonis Ali; Malekbala, Mohamad Rasool; Cheah, Willie; Choong, Thomas Shean Yaw

doi:10.1016/j.cej.2011.05.010

Cited by 171 publications

(68 citation statements)

References 39 publications

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“…41 The adsorption capacity of CM slightly increased with the increase of adsorption temperature to 60°C ( Figure 6B). Considering the apparent activation energy of MB adsorption on CM using the Arrhenius equation…”

Section: Adsorption Kinetics Of Methylene Blue (Mb)mentioning

confidence: 96%

Adsorption and Desorption of Methylene Blue on Porous Carbon Monoliths and Nanocrystalline Cellulose

Male

Nesterenko

et al. 2013

ACS Appl. Mater. Interfaces

337

199

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1021/am403222u ACS Applied Materials & Interfaces, 5, 17, pp. 8796-8804, 2013-08-09 Adsorption and desorption of Methylene blue on porous Carbon monoliths and nanocrystalline cellulose He, Xiaoyun; Male, Keith B.; Nesterenko, Pavel N.; Brabazon, Dermot; Paull, Brett; Luong, John H. T. ABSTRACT:The dynamic batch adsorption of methylene blue (MB), a widely used and toxic dye, onto nanocrystalline cellulose (NCC) and crushed powder of carbon monolith (CM) was investigated using the pseudo-first-and -second-order kinetics. CM outperformed NCC with a maximum capacity of 127 mg/g compared to 101 mg/g for NCC. The Langmuir isotherm model was applicable for describing the binding data for MB on CM and NCC, indicating the homogeneous surface of these two materials. The Gibbs free energy of −15.22 kJ/mol estimated for CM unravelled the spontaneous nature of this adsorbent for MB, appreciably faster than the use of NCC (−4.47 kJ/mol). Both pH and temperature exhibited only a modest effect on the adsorption of MB onto CM. The desorption of MB from CM using acetonitrile was very effective with more than 94 % of MB desorbed from CM within 10 min to allow the reusability of this porous carbon material. In contrast, acetonitrile was less effective than ethanol in desorbing MB from NCC. The two solvents were incapable of completely desorbing MB on commercial granular coal-derived activated carbon.

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Section: Adsorption Kinetics Of Methylene Blue (Mb)mentioning

confidence: 96%

Adsorption and Desorption of Methylene Blue on Porous Carbon Monoliths and Nanocrystalline Cellulose

Male

Nesterenko

et al. 2013

ACS Appl. Mater. Interfaces

337

199

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“…Among the physical, chemical and biological methods of dye removal, oxidation (using oxidizing agents like ozone, ultraviolet [UV] irradiation, and hydrogen peroxide), membrane separation, coagulation and flocculation, and adsorption are commonly used [3,13]. However, other than the adsorption techniques, these methods have either high costs and/ or are technically complicated [14].…”

Section: Introductionmentioning

confidence: 99%

“…However, other than the adsorption techniques, these methods have either high costs and/ or are technically complicated [14]. The adsorption method is highly preferable due to its low cost consumption, easy operation, higher efficiency, insensitivity to toxic materials and versatility [1,13,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Adsorption capability of activated carbon synthesized from coconut shell

Islam¹,

Ang²,

Gharehkhani³

et al. 2016

Carbon letters

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Activated carbon was synthesized from coconut shells. The Brunauer, Emmett and Teller surface area of the synthesized activated carbon was found to be 1640 m 2 /g with a pore volume of 1.032 cm 3 /g. The average pore diameter of the activated carbon was found to be 2.52 nm. By applying the size-strain plot method to the X-ray diffraction data, the crystallite size and the crystal strain was determined to be 42.46 nm and 0.000489897, respectively, which indicate a perfect crystallite structure. The field emission scanning electron microscopy image showed the presence of well-developed pores on the surface of the activated carbon. The presence of important functional groups was shown by the Fourier transform infrared spectroscopy spectrum. The adsorption of methyl orange onto the activated carbon reached 100% after 12 min. Kinetic analysis indicated that the adsorption of methyl orange solution by the activated carbon followed a pseudo-second-order kinetic mechanism (R 2 > 0.995). Therefore, the results show that the produced activated carbon can be used as a proper adsorbent for dye containing effluents.

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“…It was observed that increasing the layers is not effective for the photocatalytic process, whereas increasing the porous layer (mesoporous carbon) had a strong impact on the photocurrent. N 2 adsorption/desorption isotherms ( Figure 5) illuminated that mesoporous carbon and TiO 2 nanoparticles exhibited a typical type IV isotherm according to the IUPAC classification, 20 indicating mesopore-rich textural properties for both samples. In mesoporous carbon, a steep and sharp H1-type hysteresis loop at a high relative pressure (P/P 0 .0.6) was observed.…”

Section: Results and Discussion Characterization Of Photoanodesmentioning

confidence: 99%

Synthesis, characterization, and performance evaluation of multilayered photoanodes by introducing mesoporous carbon and TiO<sub>2</sub> for humic acid adsorption

Hosseini¹,

Jahangirian²,

Webster³

et al. 2016

IJN

Self Cite

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Nanostructured photoanodes were prepared via a novel combination of titanium dioxide (TiO 2 ) nanoparticles and mesoporous carbon (C). Four different photoanodes were synthesized by sol–gel spin coating onto a glassy substrate of fluorine-doped tin oxide. The photocatalytic activities of TiO 2 , TiO 2 /C/TiO 2 , TiO 2 /C/C/TiO 2 , and TiO 2 /C/TiO 2 /C/TiO 2 photoanodes were evaluated by exposing the synthesized photoanodes to UV–visible light. The photocurrent density observed in these photoanodes confirmed that an additional layer of mesoporous carbon could successfully increase the photocurrent density. The highest photocurrent density of ~1.022 mA cm −2 at 1 V/saturated calomel electrode was achieved with TiO 2 /C/C/TiO 2 under an illumination intensity of 100 mW cm −2 from a solar simulator. The highest value of surface roughness was measured for a TiO 2 /C/C/TiO 2 combination owing to the presence of two continuous layers of mesoporous carbon. The resulting films had a thickness ranging from 1.605 µm to 5.165 µm after the calcination process. The presence of double-layer mesoporous carbon resulted in a 20% increase in the photocurrent density compared with the TiO 2 /C/TiO 2 combination when only a single mesoporous carbon layer was employed. The improved performance of these photoanodes can be attributed to the enhanced porosity and increased void space due to the presence of mesoporous carbon. For the first time, it has been demonstrated here that the photoelectrochemical performance of TiO 2 can be improved by integrating several layers of mesoporous carbon. Comparison of the rate of removal of humic acid by the prepared photoanodes showed that the highest performance from TiO 2 /C/C/TiO 2 was due to the highest photocurrent density generated. Therefore, this study showed that optimizing the sequence of mesoporous carbon layers can be a viable and inexpensive method for enhanced humic acid removal.

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Carbon coated monolith, a mesoporous material for the removal of methyl orange from aqueous phase: Adsorption and desorption studies

Cited by 171 publications

References 39 publications

Adsorption and Desorption of Methylene Blue on Porous Carbon Monoliths and Nanocrystalline Cellulose

Adsorption and Desorption of Methylene Blue on Porous Carbon Monoliths and Nanocrystalline Cellulose

Adsorption capability of activated carbon synthesized from coconut shell

Synthesis, characterization, and performance evaluation of multilayered photoanodes by introducing mesoporous carbon and TiO<sub>2</sub> for humic acid adsorption

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