The effect of Cu doping on structural, optical properties and photocatalytic activity of Co3O4 nanoparticles synthesized by sonochemical method

Muradov, M. B.; Mammadyarova, S.J.; Eyvazova, Goncha M.; Balayeva, Ofeliya O.; Hasanova, I.; Aliyeva, Gulshan; Melikova, S. Z.; Abdullayev, Mahammadali

doi:10.1016/j.optmat.2023.114001

Cited by 10 publications

(4 citation statements)

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“…Dislocation density ( δ ) and unit cell volume ( V ) were determined by () and () equations using 2 θ = 9.59°; and 59.84°, respectively [17]:

δ = \frac{n}{D^{2}} .

V = a^{3} .

…”

Section: Resultsmentioning

confidence: 99%

“…These substances, which are recognized active species quenchers, were entered to the reaction mixture. The technique was the same as that employed in earlier photocatalytic studies [16,17].…”

Section: Determination Of Active Speciesmentioning

confidence: 99%

“…This is due to the fact that the high doping of C 60 leads to covering the active centers and decreasing the conductivity of semiconductor material of ZnAl-LDH, because fullerene is not an electrical conductor. It was revealed that complete photodegradation of MB ($99%) on the nanocomposites occurred over the course of 10 h. It is found that the rate of photodegradation of organic dyes by heterogeneous photocatalysis follows Langmuir-Hinshelwood kinetics model which provides the relationship (17) between the photodegradation rate and substrate concentration [44][45][46].…”

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

confidence: 99%

“…0.005 M isopropyl alcohol (IPA), ascorbic acid, and trilon b were added to the reaction mixture to determine the participation of hydroxyl radicals (˙OH), superoxide anion radicals (˙O 2À ), and holes (h+) in the degradation process [16,17]. Hydroxyl radicals are important in the oxidation of organic pollutants, due to their high reactivity.…”

Section: Photocatalytic Properties Of C 6 0 @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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“…Dislocation density ( δ ) and unit cell volume ( V ) were determined by () and () equations using 2 θ = 9.59°; and 59.84°, respectively [17]:

δ = \frac{n}{D^{2}} .

V = a^{3} .

…”

Section: Resultsmentioning

confidence: 99%

Section: Determination Of Active Speciesmentioning

confidence: 99%

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

confidence: 99%

Section: Photocatalytic Properties Of C 6 0 @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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Noncovalent Doping of Fullerene (C60) into ZnAl–LDH/PVA Matrix and Photocatalytic Degradation of Methylene Blue and Congo Red from Water

Balayeva,

Azizov,

Muradov

et al. 2023

J Inorg Organomet Polym

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Remarkable reactions of doped and Co-doped Co3O4 thin films synthesized by spray pyrolysis technique for enhanced catalytic degradation of methylene blue dye under sun light irradiation

Bencharef,

Benkhetta,

Messemeche

et al. 2024

Reac Kinet Mech Cat

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The effect of Cu doping on structural, optical properties and photocatalytic activity of Co3O4 nanoparticles synthesized by sonochemical method

Cited by 10 publications

References 46 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

Noncovalent Doping of Fullerene (C60) into ZnAl–LDH/PVA Matrix and Photocatalytic Degradation of Methylene Blue and Congo Red from Water

Remarkable reactions of doped and Co-doped Co3O4 thin films synthesized by spray pyrolysis technique for enhanced catalytic degradation of methylene blue dye under sun light irradiation

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The effect of Cu doping on structural, optical properties and photocatalytic activity of Co3O4 nanoparticles synthesized by sonochemical method

Cited by 10 publications

References 46 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

Noncovalent Doping of Fullerene (C60) into ZnAl–LDH/PVA Matrix and Photocatalytic Degradation of Methylene Blue and Congo Red from Water

Remarkable reactions of doped and Co-doped Co3O4 thin films synthesized by spray pyrolysis technique for enhanced catalytic degradation of methylene blue dye under sun light irradiation

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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