Synthesis and characterization of NiO/Cr2O3 nanocomposite with effective sunlight driven photocatalytic degradation of organic dyes

Yadav, Sapna; Rani, Nutan; Saini, Kalawati

doi:10.1007/s11356-022-22746-x

Cited by 14 publications

(4 citation statements)

References 49 publications

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“…(where CV = Crystal Violet, MV = Methyl violet, MB = Methylene Blue). Photocatalyst Dye Light source Time (min) Degradation (%) Reference CuCo 2 O 4 MV Sunlight 60 93 [ 56 ] GO/NiS CV Sunlight 80 91.01 [ 57 ] SnO 2 MV Sunlight 120 80 [ 58 ] Mg-doped ZrO 2 MV UV 70 92 [ 59 ] Co(II) based coordinate polymer MV UV 50 86.1 [ 60 ] NiO/Cr 2 O 3 CV Sun light 180 88.47 [ 61 ] ZnS–ZnO NC CV UV 180 88.36 [ 62 ] ZnS QD MV UV 120 91.4 [ 63 ] MgFe ...…”

Section: Resultsmentioning

confidence: 99%

ZnSe-rGO nanocomposites as photocatalysts for purification of textile dye contaminated water: A green approach to use wastewater for maize cultivation

Zahra,

Yasmeen,

Aftab

et al. 2023

Heliyon

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Section: Resultsmentioning

confidence: 99%

ZnSe-rGO nanocomposites as photocatalysts for purification of textile dye contaminated water: A green approach to use wastewater for maize cultivation

Zahra,

Yasmeen,

Aftab

et al. 2023

Heliyon

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“…This outstanding feature makes Ni and Cr oxide nanoparticles suitable for use in bacterial environments such as hospitals or biological laboratories. 21,22 There are several methods for the synthesis of Ni and Cr oxide nanocomposite, including sol-gel, 23 co-extrusion, 24 chemical oxidation, 25 and hydrothermal. 26 The appropriate corrosion and wear resistance of 304 stainless steel (SS304), along with other excellent functional properties and its reasonable price, are the primary reasons for its widespread use in industries.…”

Section: Introductionmentioning

confidence: 99%

“…This outstanding feature makes Ni and Cr oxide nanoparticles suitable for use in bacterial environments such as hospitals or biological laboratories 21,22 . There are several methods for the synthesis of Ni and Cr oxide nanocomposite, including sol–gel, 23 co‐extrusion, 24 chemical oxidation, 25 and hydrothermal 26 …”

Section: Introductionmentioning

confidence: 99%

Mechanical, morphological, and corrosion features of Ni–Cr oxide nanocomposite coating deposited on SS304 by EPD

Mohammadzadeh,

Jafari,

Azargoon

2024

Int J Applied Ceramic Tech

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Ceramic composites are suitable materials to improve the surface characteristics of steel. Therefore, in this research, Ni–Cr oxide nanocomposite was coated on 304 stainless steel (SS304) by the electrophoretic approach. The effect of chemical composition and coating parameters (time and voltage) was investigated on morphology, corrosion, microhardness, and wear behavior. The nanocomposites were successfully synthesized in three different compositions (Ni–Cr oxides of 70–30, 60–40, and 50–50). The products were coated on the SS304 in 1, 2, and 3 min and 90, 110, and 130 V. Fourier‐transform infrared spectroscopy, X‐ray diffraction, transmission electron microscope, and field emission scanning electron microscopy analyses were employed to investigate the characteristics of the synthesized powder and resulting coatings. The hardness, wear properties, and corrosion resistance of the coating were studied by microhardness, ball‐on‐disk, electrochemical impedance spectroscopy, and polarization methods. The coatings deposited at 1 min and 110 V were sound and free of microcracks. The wear resistance increased by increasing Cr%, so the 50–50 coating showed the best wear resistance with a friction coefficient of .763 and wear mass of 1.6 mg. However, the coating 70–30 presented the highest microhardness of 180.28 Hv. The coating 60–40 had the best corrosion resistance with a corrosion current density of 5.92 µA/cm2. The corrosion resistance improved for thicker coatings.

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“…Many works have been done to investigate the method and properties in NiO and/or Cr2O3 [46]. However, there is a lack of rational information and systematic studies to find the associations between crystalline features, composition ratio, and final physical properties.…”

Section: Introductionmentioning

confidence: 99%

Structural characterization, lattice features, and optical, and magnetic properties of Ni-Cr oxide nanocomposite

Javadi

Mohammadzadeh

Aghaeinejad‐Meybodi

2023

Preprint

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In the present study, the nanocomposite of Ni-Cr oxide was synthesized through the chemical co-precipitation route with different ratios of NiO to Cr2O3, including 50–50, 60 − 40, and 70 − 30 wt. %. The morphological and physical properties of products were assessed thoroughly. Moreover, the possible chemical reactions through synthesis were proposed based on FTIR and XRD results. The crystallite size, the lattice strain, and stress were evaluated through some well-known methods based on XRD diffraction. The particle size and morphology of produced powders were studied by FESEM imaging. Also, the optical and magnetic features were assessed by UV-Vis spectroscopy and VSM analysis, respectively. The results proved the presence of NiO and NiCr2O4 in the calcined products, with uniform distribution of elements and an average particle size of < 30 nm. Moreover, the crystallite size, and the lattice stress and strain decreased with increasing NiO in the product. According to the VSM curves, nanocomposite powders showed a weak ferro/ferrimagnetic signal with a fairly dominant superparamagnetic feature. While the largest coercivity of 252 Oe belonged to the sample 70 − 30, the highest magnetization saturation (0.291 emu/g) was observed for 50–50. According to the UV-Vis curves, the value of band gap energy was in the semiconductor’s domain and increased by NiO value in the hybrid oxide combination.

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Synthesis and characterization of NiO/Cr2O3 nanocomposite with effective sunlight driven photocatalytic degradation of organic dyes

Cited by 14 publications

References 49 publications

ZnSe-rGO nanocomposites as photocatalysts for purification of textile dye contaminated water: A green approach to use wastewater for maize cultivation

ZnSe-rGO nanocomposites as photocatalysts for purification of textile dye contaminated water: A green approach to use wastewater for maize cultivation

Mechanical, morphological, and corrosion features of Ni–Cr oxide nanocomposite coating deposited on SS304 by EPD

Structural characterization, lattice features, and optical, and magnetic properties of Ni-Cr oxide nanocomposite

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