SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

Balayeva, Ofeliya O.

doi:10.52676/1729-7885-2022-4-63-73

Cited by 1 publication

(2 citation statements)

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“…The removal degrees of the photodegradation of MB are 65.16%, 55.57%, 53.31%, and 58.56% after 180 min, respectively. The photocatalytic degradation mechanism can be described as following reactions (20-32) [52][53][54][55][56][57][58] and schematic illustration (Figure 8).…”

Section: Photocatalytic Properties Of C 6 0 @Znal-ldh/pvamentioning

confidence: 99%

C_{60} @ ZnAl goodbreak- LDH / PVA goodbreak+ C_{16} H_{18} {ClN}_{3} normalS \to physical adsorption .

C_{60} @ ZnAl goodbreak- LDH / PVA goodbreak+ italichν \to C_{60} @ ZnAl goodbreak- LDH / PVA ((), e^{-} goodbreak+ h^{+}) .

{normalH}_{2} O + {normalh}^{+} \to \cdot OH + {normalH}^{+} .

{2H}_{2} O + {2h}^{+} \to {normalH}_{2} {normalO}_{2} + {2H}^{+} .

{normalH}_{2} {normalO}_{2} + hν \to 2 \cdot OH .

{normalh}^{+} + {OH}^{-} \to \cdot OH .

{normalO}_{2} + {normale}^{-} \to {O_{2}}^{- •} .

…”

Section: Photocatalytic Properties Of C60@znal‐ldh/pvamentioning

confidence: 99%

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Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

Balayeva,

Israfilli,

Azizov

2023

J Chinese Chemical Soc

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IntroductionLayered double hydroxides (LDHs) are widely studied anionite clays consisting of positively‐charged hydroxide nanosheets which is described by the general formula: [M(II)1−xM(III)x(OH)2][An−·mH2O], where M(II) and M(III) are the divalent (e.g., Mg2+, Zn2+, Ca2+, Co2+, Ni2+, etc.) and trivalent (e.g., Al3+, Fe3+, Cr3+, etc.) metal ions, An− and H2O is the interlamellar anion (e.g., Cl¯, Br¯, NO3¯, CO32¯, SO42¯, SeO42¯) for charge‐neutralization and hydrated state, respectively. They have been widely used in different industry sectors, in materials science and research. Polymer/LDH nanocomposites have gained significant attention in recent years.Carbon‐based nanomaterials, like fullerene, carbon nanotubes (CNT), graphene and graphene oxide have attracted significant attention. Fullerene molecules (C60, C70) are used as reinforcing material for polymers to improve their mechanical, thermal, optical, energy storage and charge transport properties.ObjectivesC60‐doped ZnAl‐layered double hydroxide/polyvinyl alcohol nanocomposites were successfully synthesized and their photocatalytic activity for photodegradation of methylene blue (MB) synthetic dye was quantitatively analyzed by ultraviolet (UV) spectroscopy. The effect of C60 on the optical, structural, morphological properties, and photocatalytic activity of LDHs was investigated, and the impact of C60/LDH mass ratio and aging time on the properties was also studied.MethodsFullerene‐doped ZnAl‐LDH/PVA nanocomposites were synthesized via urea hydrolysis and coprecipitation‐coformation method. First, 10 wt% PVA/water solution (40 mL) is added into the mixed solution containing 0.015 mol of Zn(NO3)2·6H2O and 0.005 mol of Al2(SO4)3·9H2O and titrated by 2 M of NaOH and 1 M of NaHCO3 mixed base solution to adjust pH 9. The obtained white slurry was shaken very hard and aged for 1 year. The obtained samples were marked by the mass percentage of C60 as 1% C60@LDH/PVA, 10% C60@LDH/PVA, 20% C60@LDH/PVA, and 60% C60@LDH/PVA.Results and DiscussionThe basal spacing of C60‐doped ZnAl‐LDH was estimated to be 9.217 Å which is wide enough from the general LDH (~7.0 Å). The crystallite size of nanoparticles is 9.217 nm and ~6 nm by Scherrer's equation and Williamson–Hall method from the XRD data, respectively. Rice‐shaped 2D morphology was formed with 100 nm–2 μm width and 500 nm–10 μm in length by SEM. The maximal photodegradation efficiency was found with 20% of C60 doping (PD% = 96.98) after 360 min, where the sorption efficiency with this compound is very high (R% = 85.55).ConclusionsIn the presented work, the effect of C60 on the optical, structural, morphological properties, and photocatalytic activity of LDHs was investigated, and the impact of C60/LDH mass ratio and aging time on the properties was also studied. For the identification of the photocatalytic activity of obtained C60/LDH nanocomposites, MB was used as a model pollutant and the efficiency of the Zn/Al LDH nanocomposite, with various quantities of fullerene, is also evaluated.

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Section: Photocatalytic Properties Of C 6 0 @Znal-ldh/pvamentioning

confidence: 99%

C_{60} @ ZnAl goodbreak- LDH / PVA goodbreak+ C_{16} H_{18} {ClN}_{3} normalS \to physical adsorption .

C_{60} @ ZnAl goodbreak- LDH / PVA goodbreak+ italichν \to C_{60} @ ZnAl goodbreak- LDH / PVA ((), e^{-} goodbreak+ h^{+}) .

{normalH}_{2} O + {normalh}^{+} \to \cdot OH + {normalH}^{+} .

{2H}_{2} O + {2h}^{+} \to {normalH}_{2} {normalO}_{2} + {2H}^{+} .

{normalH}_{2} {normalO}_{2} + hν \to 2 \cdot OH .

{normalh}^{+} + {OH}^{-} \to \cdot OH .

{normalO}_{2} + {normale}^{-} \to {O_{2}}^{- •} .

…”

Section: Photocatalytic Properties Of C60@znal‐ldh/pvamentioning

confidence: 99%

Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

Balayeva,

Israfilli,

Azizov

2023

J Chinese Chemical Soc

Self Cite

View full text Add to dashboard Cite

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SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

Cited by 1 publication

References 53 publications

Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

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SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

Cited by 1 publication

References 53 publications

Fullerene (C60)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

Fullerene (C60)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

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Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution

Fullerene (C₆₀)‐doped zinc‐aluminium layered double hydroxide/polyvinyl alcohol nanocomposites: Synthesis, characterization, and photodegradation of methylene blue from water solution