Study on efficient removal of anionic, cationic and nonionic dyes from aqueous solutions by means of mesoporous carbon nanospheres with empty cavity

Konicki, Wojciech; Cendrowski, Krzysztof; Bazarko, Grzegorz; Mijowska, Ewa

doi:10.1016/j.cherd.2014.08.006

Cited by 55 publications

(28 citation statements)

References 54 publications

(44 reference statements)

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“…The electrostatic interaction between Fe 3 O 4 @C composites and RhB is one of the important factors affecting the adsorption ability [23,32]. Furthermore, adsorption ability will also be strengthened due to hydrogen bonds between hydroxyl groups and carbonyl groups [33,34]. The saturation capacity of MR-Fe 3 O 4 @C composite exceeds 135 mg g −1 , whereas the values of C-Fe 3 O 4 @C and TA-Fe 3 O 4 @C composites are only about 76 and 100 mg g −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Effect of magnetite nanoparticles on dye absorption properties of magnetite@carbon composites

Liu

Zhao

et al. 2017

Bull Mater Sci

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Magnetite@ @carbon (Fe 3 O 4 @ @C) composites were prepared using three kinds of Fe 3 O 4 nanoparticles (NPs). All the Fe 3 O 4 @ @C composites could be easily separated from water by an external magnet. The Fe 3 O 4 NPs synthesized by a microreactor system have the smallest size and narrowest size distribution among the three kinds of Fe 3 O 4 NPs. The saturated capacity of the Fe 3 O 4 @ @ @C composite originating from microreactor-prepared Fe 3 O 4 NPs to absorb Rhodamine B at 20 • C exceeds 135 mg g −1 , which is 1.35 times as much as the value of the Fe 3 O 4 @ @C composite originating from traditional Fe 3 O 4 NPs. This value for the Fe 3 O 4 @ @C composite using commercial Fe 3 O 4 NPs as core is only 76 mg g −1. The Fe 3 O 4 @ @C composite using microreactor-prepared Fe 3 O 4 NPs also has good retrievability and reusability.

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Section: Resultsmentioning

confidence: 99%

Effect of magnetite nanoparticles on dye absorption properties of magnetite@carbon composites

Liu

Zhao

et al. 2017

Bull Mater Sci

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“…showed that there were no significant changes in percentage of dye removal as the initial dye concentration varied from 10 to 40 mg/L, while the actual amount of dye adsorbed per unit mass of the adsorbent increased from 2.5 to 9.9 mg/g. An increase in the initial dye concentration led to an increase in mass gradient between the solution and adsorbent, acting as driving force for the transfer of dye molecules from bulk solution to the particle surface .…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Dye Adsorption Onto SBA‐15 Using Image Analysis

Nešić

Kokunešoski

Meseldzija

et al. 2016

CLEAN Soil Air Water

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In this work, the reliability of image analysis for the numerical evaluation of Basic Red 46 (BR 46) dye adsorption process was studied. The image analysis was carried out on dye adsorbed onto SBA‐15 mesoporous silica, by use of Image‐Pro Plus software. Pixel‐specific calibration curves were derived and used to obtain dye concentration from the three different primary color channels (red, green, and blue) recorded at each pixel. In order to establish credibility of this method for quantification of adsorption processes, these data were compared with dye adsorption parameters obtained by UV‐vis analysis. Among the three different primary color channels, the best results were obtained when the blue color channel was applied. In this case, the average relative error was 0.86%. The obtained results showed that a dye adsorbed on SBA‐15 can be determined with the use of Image‐Pro Plus with the same sensitivity as with the use of spectrophotometric analysis for the determination of changes in dye concentration during the adsorption process.

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“…On contrary, at the multilayer adsorption step the positive value of ∆ܵ indicates an increase in disorder of system's interface [29,39].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 90%

“…Considering the functional groups observed at the SB biomass FTIR analysis, the carboxyl were identified as the main responsible groups for the dye adsorption. Thus, at low pH values carboxylic groups may become protonated leading to an residual positive charge at SB biomass surface [2,38,39]. Furthermore, the FTIR analysis of the RB5G dye showed the presence of sulfonate groups (SO 3 -), which gives the anionic character to this molecule [7].…”

Section: Initial Phmentioning

confidence: 98%

Monolayer–multilayer adsorption phenomenological model: Kinetics, equilibrium and thermodynamics

Scheufele

Módenes

Borba

et al. 2016

Chemical Engineering Journal

152

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Study on efficient removal of anionic, cationic and nonionic dyes from aqueous solutions by means of mesoporous carbon nanospheres with empty cavity

Cited by 55 publications

References 54 publications

Effect of magnetite nanoparticles on dye absorption properties of magnetite@carbon composites

Effect of magnetite nanoparticles on dye absorption properties of magnetite@carbon composites

Evaluation of Dye Adsorption Onto SBA‐15 Using Image Analysis

Monolayer–multilayer adsorption phenomenological model: Kinetics, equilibrium and thermodynamics

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