NiO nanostructures: synthesis, characterization and photocatalyst application in dye wastewater treatment

Motahari, Fereshteh; Mozdianfard, Mohammad Reza; Soofivand, Faezeh; Salavati‐Niasari, Masoud

doi:10.1039/c4ra02697g

Cited by 272 publications

(69 citation statements)

References 40 publications

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“…11. Degradation of Safranine O [10], Rhodamine B [87], 4-cholorophenol [88] by NiO in UV light were studied by different research groups. Though degradation of organics using NiO nanomaterials have been extensively studied, to the best of the literature survey done, we are the first to report the degradation in solar light.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Combustion synthesis and characterization of NiO nanoparticles

Ramasami

Reddy

Balakrishna

2015

Materials Science in Semiconductor Processing

127

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Section: Photocatalytic Activitymentioning

confidence: 99%

Combustion synthesis and characterization of NiO nanoparticles

Ramasami

Reddy

Balakrishna

2015

Materials Science in Semiconductor Processing

127

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“…Because of the biological importance of amino acid Schiff‐base complexes as a nonenzymatic model for a Schiff‐base metal complex, using this precursor to synthesize ceramic NPs has become a hot topic and is categorized as a green method . Salavati‐Niasari et al used [ N , N ‐bis(salicylaldehydo)ethylene diamine] complexes to synthesize ZnO, NiO, and Cu 3 V 2 O 8 nanostructures . A mixed‐ligand complex containing the amino acid Schiff‐base and 1,10‐phenanthroline is an interesting system for researchers because of its applications in anticancer drugs, sensors, photophysics, and so on Preparation of water‐soluble complexes, owing to their higher compatibility with biosystems and less environmental contamination, has gained special importance.…”

Section: Introductionmentioning

confidence: 99%

Water‐based synthesis of ZnO nanoparticles via decomposition of a ternary zinc complex containing Schiff‐base, chelating, and Phen ligands

Gharagozlou

Naghibi

Ataei

2018

J Chinese Chemical Soc

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The recent environmental awareness has been the motivation for the growing preference for environmentally friendly and water‐based systems in chemical synthesis. In the present work, ZnO nanoparticles were synthesized via a novel method without any water‐insoluble compounds. At the first step, a binary Zn Schiff‐base complex was prepared from sodium salicylaldehyde‐5‐sulfonate, L‐alanine, and zinc acetate. Then, a ternary Zn complex containing the Schiff‐base, chelating, and Phen ligands was synthesized from the as‐synthesized binary Zn Schiff base and 1,10‐phenanthroline monohydrate. This intermediate product showed high water solubility and long‐term stability. Finally, ZnO nanoparticles were synthesized through the calcination of the ternary complex powder at 400, 500, and 600 °C. Combining X‐ray diffraction (XRD) and energy dispersive spectroscopy (EDS) results, it was concluded that the samples contained the ZnO phase without any impurity phases, but Fourier transform infrared (FTIR) spectra implied the presence of a remaining impurity. According to the XRD, FTIR, and photoluminescence (PL) analyses, the as‐synthesized samples differed in terms of the defect content and lattice strain. The sample calcined at 500 °C possessed the lowest defect content and lattice strain. Transmission electron microscopy (TEM) imaging revealed the formation of ZnO nanoparticles with particles sizes of <20, ~50, and ~100 nm for samples heat‐treated at the different temperatures.

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“…Hence, the active surface of the Co-L 1 was increased, which is of great importance for the catalytic performance in the oxidation of cyclohexene. The pore size was obtained using the Barrett-Joyner-Halenda (BJH) method (Motahari et al, 2014). Table 3 indicates that all of the three catalysts were active in the oxidation reaction.…”

Section: Resultsmentioning

confidence: 99%

Carbonylation of cyclohexene to 2-cyclohexene-1-one by montmorillonite-supported Co(II) catalysts

2015

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A novel environmentally-friendly catalytic system for the carbonylation of cyclohexene with molecular oxygen under conditions of mild temperature, and under an atmospheric oxygen pressure is presented. In this system, a series of readily-prepared cobalt complexes of 2-aminophenol and its derivatives immobilised onto montmorillonite were used as catalysts. The catalysts were characterised by FT-IR, elemental analysis, thermogravimetric analysis, powder X-ray diffraction, diffuse reflectance ultraviolet visible spectra, scanning electron microscopic measurements, transmission electron microscopic measurements and the Brunauer-Emmett-Teller method. The effects of various reaction conditions such as catalyst dosage, temperature and time were optimised, obtaining an 88.7 % conversion with 72.0 % selectivity of 2-cyclohexene-1-one in 6 h. The results show that the catalytic activity of the cobalt complexes encapsulated in montmorillonite is higher than those of the free complexes. In addition, the heterogeneous catalysts were stable and can be recycled up to five times without any noticeable change in the catalytic activity.

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NiO nanostructures: synthesis, characterization and photocatalyst application in dye wastewater treatment

Cited by 272 publications

References 40 publications

Combustion synthesis and characterization of NiO nanoparticles

Combustion synthesis and characterization of NiO nanoparticles

Water‐based synthesis of ZnO nanoparticles via decomposition of a ternary zinc complex containing Schiff‐base, chelating, and Phen ligands

Carbonylation of cyclohexene to 2-cyclohexene-1-one by montmorillonite-supported Co(II) catalysts

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