Wrapping carbon nanotubes with poly (sodium 4-styrenesulfonate) for enhanced adsorption of methylene blue and its mechanism

Zhang, Zhao Yang; Xu, Xuecheng

doi:10.1016/j.cej.2014.06.020

Cited by 105 publications

(23 citation statements)

References 33 publications

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“…According to the above discussion, it can be concluded that these interactions are effective in enhancing the adsorption process of MB dye on the surface of the SATCS. Similar results were reported by other studies for the MB dye adsorption on multi-wall carbon nanotube [52], chemically treated carbon microspheres [53], wrapping carbon nanotube [54], and coal activated carbon [37].…”

Section: Adsorption Mechanismsupporting

confidence: 91%

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

233

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Coconut (Cocos nucifera) shell was chemically treated with sulfuric acid (H2SO4) to produce acid-factionalized biosorbent for methylene blue (MB) dye removal from aqueous environment. Various analytical techniques were utilized to investigate the surface area, surface morphology, crystallinity, elemental composition, and functional group of the sulfuric acid-treated coconut shell (SATCS). The adsorption parameters such as adsorbent dosage (0.02-0.20 g), solution pH (3-10), contact time (0-360 min), and initial MB dye concentration (25-200 mg/L) were studied. The adsorption results were illustrated by pseudo-second order kinetic and Freundlich isotherm models. It was found that SATCS has a maximum adsorption capacity (q max) of 50.6 mg/g at 303 K. The adsorption mechanism of MB dye on the SATCS surface can be assigned to the various types of interactions such as electrostatic attractions, H-bonding interaction, and π-π interaction. This work shows SATCS as promising acid-factionalized biosorbent for removal MB dye.

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Section: Adsorption Mechanismsupporting

confidence: 91%

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Jawad

Abdulhameed

Mastuli

2020

Journal of Taibah University for Science

233

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“…Hybridization with other materials such as chitosan, graphene, and cellulose has been reported to enhance their dispersion properties and adsorption capacities [8][9][10] . However, coating CNTs with poly(sodium-4-styrenesulfonate), alumina, TiO 2 , and silica layer is another technique that can overcome such problems, because these materials offer superior characteristics with a high specific surface area, high ordering, as well as a narrow poresize distribution that makes them ideal adsorbents [11][12][13][14][15] . Recently, we also revealed the preparation of mesostructured silica nanoparticles (MSNs) coated onto MWCNTs, which resulted in efficient adsorption towards methylene blue (MB) dye 4 .…”

Section: Introductionmentioning

confidence: 99%

Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity

et al. 2015

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ARTICLE This journal isSingle-walled carbon nanotubes (SWCNTs)-mesostructured silica nanoparticle (MSN) adsorbents (S-MSNs) were prepared through a simple one-step method with various loadings of SWCNTs. Their surface properties were characterized by XRD, TEM, N 2 physisorption, and FTIR spectroscopy. A grape-like S-MSN was produced, for which the growth of MSNs became intense with increasing CNT loading. A bimodal pore structure also developed, which increased the average pore size and pore volume, but decreased the surface area. The increasing amount of CNTs was found to provide more sites for silica growth that enhanced the adsorptivity of the S-MSNs toward methylene blue (MB) dye. Accordingly, 0.1 g L -1 5 wt% S-MSN was able to adsorb 478 mg g -1 (q m ) of 50 mg L -1 MB at pH 7 and 323 K. The equilibrium data were evaluated using the Langmuir, Freundlich, Redlich-Peterson, and Dubinin-Radushkevich isotherm models, with the Langmuir and Redlich-Peterson models affording the best fit to the adsorption data. The adsorption was best described by a pseudo-second-order kinetics model and thermodynamically favored the endothermic chemisorption process. These results indicated the potential of S-MSN as an effective new adsorbent for dye adsorption.

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“…As illustrated in Table 3 , the adsorption data can be better described by Freundlich model with higher values of correlation constant, suggesting other interactions except ion exchange may exist in HA adsorption. Previous researchers have revealed the cation-π bonding and π-π interaction between organic pollutants and various adsorbents 30 , 31 . More recently, the π-π interaction has been proposed between the adsorbed HA molecules and free HA molecules 14 , 29 .…”

Section: Resultsmentioning

confidence: 99%

Preparation of Permanent Magnetic Resin Crosslinking by Diallyl Itaconate and Its Adsorptive and Anti-fouling Behaviors for Humic Acid Removal

Hua

et al. 2017

Sci Rep

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In this research, a series of permanent magnetic anion exchange resins (MAERs) were prepared by polymerizing glycidyl methacrylate monomer and crosslinking diallyl itaconate (DAI) and divinylbenzene. The properties and performances of these novel MAERs were systematically characterized and evaluated for humic acid (HA) adsorption by batch experiments. With the increase of DAI content from 0 to 15%, the moisture of MAERs was elevated from 50.23% to 68.53%, along with the adsorption capacity increasing from 2.57 to 3.14 mmol g−1. As the concentrations of co-existing cation (Ca2+ and Mg2+) increased, the adsorption amounts of HA dropped drastically at first and increased a little at high cation concentrations. Although ion exchange was the primary mechanism for HA adsorption, other physical interactions and electrostatic attraction between HA molecules and newly formed oxonium group also played significant roles for HA adsorption. The MAERs could be efficiently regenerated by a mixture of NaCl/NaOH solution (10%/1%), and notably, the MAER-3 with the highest DAI content displayed unapparent loss of adsorption capacity during twenty-one successive adsorption-desorption cycles. These results suggested a novel resin adsorbent for its excellent performances on adsorption, regeneration, and sedimentation in water treatment for natural organic matter removal.

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Wrapping carbon nanotubes with poly (sodium 4-styrenesulfonate) for enhanced adsorption of methylene blue and its mechanism

Cited by 105 publications

References 33 publications

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Acid-factionalized biomass material for methylene blue dye removal: a comprehensive adsorption and mechanism study

Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity

Preparation of Permanent Magnetic Resin Crosslinking by Diallyl Itaconate and Its Adsorptive and Anti-fouling Behaviors for Humic Acid Removal

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