Selective removal of anionic dyes with exceptionally high adsorption capacity and removal of dichromate (Cr2O72-) anion using Ni-Co-S/CTAB nanocomposites and its adsorption mechanism

Chowdhury, Arif; Kumari, Suman; Khan, Afaq Ahmad; Hussain, Sahid

doi:10.1016/j.jhazmat.2019.121602

Cited by 86 publications

(25 citation statements)

References 68 publications

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“…The maximum adsorption capacity of the assembly for RhB was about 500 mg/g (Figure S16), which partly exceeds that of nanocomposite adsorbents and are particularly well suited for dye removal. [53][54][55] The same qualitative experiments were conducted with other commercial dyes, methylene blue and Thioflavin T. Similar with RhB, each tested dye was mostly encapsulated in the RPWM assemblies and visibly removed from water (Figure S17). The removal efficiency was separately calculated as 99.2 % and 98.7 % for methylene blue and Thioflavin T, suggesting the remarkable capability of RPWM assemblies for dye removal from aqueous solution.…”

Section: Temperature-responsive Morphological Transition For Sustainable Pollutant Removalmentioning

confidence: 91%

“…The removal efficiency could reach as high as 99.5 %, comparable to the previously reported materials. [51][52][53] Afterwards, the precipitates were mixed with water again and placed under 4 °C for the further release. As shown in Figure S15, only few dye molecules (< 3%) were detected to be released from the assemblies after 24 h. Since the system was kept at 4 °C, the initially formed nanosphere structures were not destroyed, thus the adsorbed or embedded RhB molecules were still persisted in the assembly system.…”

Section: Temperature-responsive Morphological Transition For Sustainable Pollutant Removalmentioning

confidence: 99%

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Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

Zhang

Qin

Xing

et al. 2021

Chemistry A European J

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Fabricating structural complex assemblies from simple amino acid-based derivatives is attracting great research interests due to their easy accessibility and preparation. However, the morphological regulation of racemates (an equimolar mixture of enantiomers) were largely overlooked. In this work, through rational modulation of kinetic and thermodynamic parameters, we achieved multiple dimensional architectures employing tryptophan-based racemate (RPWM). Upon assembling, 1D bundled nanofibers, 2D lamellar nanostructure and 3D urchin-like microflowers could be obtained depending on the solvents used. The corresponding morphology evolutions were successfully illustrated by changing the enantiomeric excess (ee) value. Moreover, for RPWM, uniform 0D nanospheres were formed in H 2 O under 4 °C, which could spontaneously convert into lamella under ambient temperature. Taking advantages of its temperature-responsive phase change behavior, RPWM assemblies exhibited excellent removal efficiency for organic dye RhB, and could be reused for several consecutive cycles without significant changes in its removal performance. Taken together, it's rational to envision that the engineering of racemates assembly pathways can greatly increase the robustness in a wide variety of supramolecular materials and further lead to their blooming versatile applications.

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Section: Temperature-responsive Morphological Transition For Sustainable Pollutant Removalmentioning

confidence: 91%

Section: Temperature-responsive Morphological Transition For Sustainable Pollutant Removalmentioning

confidence: 99%

Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

Zhang

Qin

Xing

et al. 2021

Chemistry A European J

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“…The maximum adsorption capacity of Co/N-mC adsorbent for MO and RhB respectively is 178 mg g −1 and 141 mg g −1 . As listed in Table 1, compared with magnetic porous carbon [33], CMK-3 [34], magnetic biochar [35], N-doped carbons [36] and other types of adsorbents [37][38][39], Co@N-mC composites presented higher adsorption activity for RhB or MO. The adsorption capacity over Co@N-mC composites was sequenced by MO > RhB might be caused by (1) small sized MO need shorter time but adsorption amount might be increased which the porosity of carbon plays a leading role.…”

Section: Resultsmentioning

confidence: 99%

In-situ carbonization of ZIF-67 to fabricate magnetically Co/N-mC with high adsorption capacity toward water remediation

2021

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Co and N co-modified mesoporous carbon composites (Co/N-mC) have been simply prepared at low cost from the carbonization of ZIF-67 wherein not only providing surface N-modification for promoting the adsorption behavior of acidic dyes, but also constructing a magnetic property for convenient separation. Co/N-mC composite presented the adsorption ability of MO (178 mg g−1) > RhB (141 mg g−1) (T = 25 °C, pH = 7.0, C0 = 20 mg L−1) because of its spacious porous structure (BET: 250.8 m2 g−1; pore size: 3.9 nm) and functional basic character (pyrrolic-N and pyridinic-N). Compared with basic dyes (RhB), mesoporous C doped with N improves the adsorption of acid dyes (MO). In addition, the magnetic properties introduced in the Co/N-mC make it easier to separate after adsorption and regeneration by an external magnetic field.

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“…). 14 Huang et al adopted in situ synthesis to prepare PEI-Pt modied bacterial cellulose as a bio-adsorbent for the efficient adsorption of anionic dyes. 15 Methacrylatoethyltrimethyl ammonium chloride (DMC) is a type of cationic monomer containing quaternary ammonium groups.…”

Section: àmentioning

confidence: 99%

“…For example, Chowdhury et al synthesized a positively charged Ni–Co–S/CTAB adsorbent that exhibited effective adsorption for Congo red, methyl orange, and dichromate (Cr 2 O 7 2− ). 14 Huang et al adopted in situ synthesis to prepare PEI–Pt modified bacterial cellulose as a bio-adsorbent for the efficient adsorption of anionic dyes. 15 Methacrylatoethyltrimethyl ammonium chloride (DMC) is a type of cationic monomer containing quaternary ammonium groups.…”

Section: Introductionmentioning

confidence: 99%

Novel Fe₃O₄–poly(methacryloxyethyltrimethyl ammonium chloride) adsorbent for the ultrafast and efficient removal of anionic dyes

et al. 2021

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Selective removal of anionic dyes with exceptionally high adsorption capacity and removal of dichromate (Cr2O72-) anion using Ni-Co-S/CTAB nanocomposites and its adsorption mechanism

Cited by 86 publications

References 68 publications

Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

In-situ carbonization of ZIF-67 to fabricate magnetically Co/N-mC with high adsorption capacity toward water remediation

Novel Fe₃O₄–poly(methacryloxyethyltrimethyl ammonium chloride) adsorbent for the ultrafast and efficient removal of anionic dyes

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Selective removal of anionic dyes with exceptionally high adsorption capacity and removal of dichromate (Cr2O72-) anion using Ni-Co-S/CTAB nanocomposites and its adsorption mechanism

Cited by 86 publications

References 68 publications

Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan‐Based Racemate

In-situ carbonization of ZIF-67 to fabricate magnetically Co/N-mC with high adsorption capacity toward water remediation

Novel Fe3O4–poly(methacryloxyethyltrimethyl ammonium chloride) adsorbent for the ultrafast and efficient removal of anionic dyes

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Novel Fe₃O₄–poly(methacryloxyethyltrimethyl ammonium chloride) adsorbent for the ultrafast and efficient removal of anionic dyes