Synthesis and characterization of Ni/NiO nanochains

Mammadyarova, S.J.; Muradov, M. B.; Maharramov, Abel M.; Eyvazova, Goncha M.; Aghamaliyev, Z. A.; Balayeva, Ofeliya O.; Hasanova, I.

doi:10.1016/j.matchemphys.2020.124171

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…Ni/NiO hybrid was also studied as an adsorbent for Pb and Cd ions (Shivangi et al 2020 ), Congo red and Cr(VI) (Zhao et al 2016 ), catalytic decomposition of ozone (Gong et al 2020 ), and also applied for water splitting (Wang et al 2017 ). Synthesis’ conditions affect the morphology, particle size, and band gap of Ni/NiO particles (Mammadyarova et al 2021 ). Ni/NiO has been fabricated by various routes, such as solution combustion using different fuels (Adhikari and Madras 2017 ; Srinivasa et al 2021 ), thermal annealing of Ni(CH 3 CO 2 ) 2 ·4H 2 O and graphene mixture (Wang et al 2021 ), precipitation using NaBH 4 and ethylene glycol as a basic precipitant (Zhao et al 2016 ), and precipitation of nickel oxalate in the presence of polyethylene glycol followed by calcination (Shivangi et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of mesoporous nano Ni/NiO and its synergistic role as super adsorbent and photocatalyst under sunlight irradiation

Mohamed

Elhgrasi

Ali

2022

Environ Sci Pollut Res

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Tailoring a material that has a synergistic role as an adsorbent and a photocatalyst for environmental application is an attractive field for research. This article presents a study of facile synthesis of NiO and Ni/NiO with a synergistic role as super adsorbents in the lake of light and photocatalysts under light irradiation. Nano flower-like mesoporous NiO and Ni/NiO were synthesized by the co-precipitation method. XRD, SEM, EDAX, XPS, BET, and DR/UV–Vis spectroscopy techniques were employed for samples’ analysis. The point of zero surface charge of prepared samples was detected by the batch equilibrium method. The adsorption efficiency was investigated in the absence of light using aniline blue as a pollutant model dye. The synergistic effect as an adsorbent and a photocatalyst was investigated under UV and sunlight irradiation. Different parameters affecting the adsorption in the dark have been optimized. The results showed that in the absence of light, the prepared samples are super adsorbents with a maximum adsorption capacity ranging from 210 to 230 mg g−1 and a removal % ranging from 95 to 100% within 2 h. Under UV or sunlight irradiation, the adsorbent/photocatalyst attained a dye removal % of 99.8% within 30 min. The adsorption data matched the pseudo-second-order model, and the equilibrium adsorption data showed compatibility with Langmuir model. The findings of experiments revealed that the adsorption is spontaneous, exothermic, and results in less entropy. Under sunlight irradiation, the dye removal efficiency increased by 19% in the case of Ni/NiO hybrid; it showed a removal efficiency of 99.5% within 30 min under sunlight irradiation versus 80% after 120 min in the dark.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of mesoporous nano Ni/NiO and its synergistic role as super adsorbent and photocatalyst under sunlight irradiation

Mohamed

Elhgrasi

Ali

2022

Environ Sci Pollut Res

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“…The (200) has the highest intensity of the three peaks, indicating that it is the preferred crystal orientation, with higher periodicity than the other orientations 54 . For Ni-G-SA coating, there are two diffraction peaks; the peak at 2θ values of 21.6° corresponds to graphene, while that at 44.5 corresponds to Ni 55 . The graphene peak is broad, showing that graphene has a small particle size.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of eco-friendly graphene-based superhydrophobic coating on steel substrate and its corrosion resistance, chemical and mechanical stability

Mohamed

Ezzat

Abdel‐Gaber

2022

Sci Rep

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Superhydrophobic coatings were successfully fabricated on steel substrates using potentiostatic electrodeposition of Ni and Ni-graphene, Ni-G, coatings followed by immersion in an ethanolic solution of stearic acid, SA. Rice straw, an environmentally friendly biomass resource, was used to synthesize high-quality graphene. The Raman spectra proved the high quality of the produced graphene. The Fourier transform infrared spectroscopy, FTIR, results showed that the Ni coating grafted with stearic acid, Ni-SA, and the Ni-G composite grafted with stearic acid, Ni-G-SA, were successfully deposited on the steel substrate. The scanning electron microscope, SEM, results showed that the prepared superhydrophobic coatings exhibit micro-nano structures. The wettability results revealed that the values of contact angles, CAs, for Ni-SA and Ni-G-SA coatings are 155.7° and 161.4°, while the values of sliding angles, SAs, for both coatings are 4.0° and 1.0°, respectively. The corrosion resistance, chemical stability, and mechanical abrasion resistance of the Ni-G-SA coating were found to be greater than those of the Ni-SA coating.

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NiO nanocrystal anchored on pitaya peel-derived carbon laminated mesoporous composites for the electrocatalytic oxidation of ethanol

Guo

Gao

Zhang

et al. 2023

Journal of Alloys and Compounds

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Synthesis and characterization of Ni/NiO nanochains

Cited by 5 publications

References 21 publications

Facile synthesis of mesoporous nano Ni/NiO and its synergistic role as super adsorbent and photocatalyst under sunlight irradiation

Facile synthesis of mesoporous nano Ni/NiO and its synergistic role as super adsorbent and photocatalyst under sunlight irradiation

Fabrication of eco-friendly graphene-based superhydrophobic coating on steel substrate and its corrosion resistance, chemical and mechanical stability

NiO nanocrystal anchored on pitaya peel-derived carbon laminated mesoporous composites for the electrocatalytic oxidation of ethanol

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