Synthesis and characterizations of NiO nanoparticles via solid-state thermal decomposition of nickel(II) Schiff base complexes (original) (raw)
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In this paper, plate-like NiO nanoparticles were prepared by one-pot solid-state thermal decomposition of nickel (II) Schiff base complex as new precursor. First, the nickel (II) Schiff base precursor was prepared by solid-state grinding using nickel (II) nitrate hexahydrate, Ni(NO3)2∙6H2O, and the Schiff base ligand N,N′-bis-(salicylidene) benzene-1,4-diamine) for 30 min without using any solvent, catalyst, template or surfactant. It was characterized by Fourier Transform Infrared spectroscopy (FT-IR) and elemental analysis (CHN). The resultant solid was subsequently annealed in the electrical furnace at 450 °C for 3 h in air atmosphere. Nanoparticles of NiO were produced and characterized by X-ray powder diffraction (XRD) at 2θ degree 0-140°, FT-IR spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The XRD and FT-IR results showed that the product is pure and has good crystallinity with cubic structure because no characteristic peaks of im...
Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Five different Nickel (II) complexes were prepared using a ONNO type Schiff base bis-N;N'(salicylidene)-1,3-propanediamine (LH2) and an ONO type Schiff base N(2-hydroxy)salicylaldimine (SAPH2) in the presence of NH3 or amine and NiO nanoparticles were obtained with thermal decomposition of this complexes in air. The prepared complexes and Schiff bases have been characterized by element analysis, IR spectroscopy, Thermogravimetry (TG), 1 HNMR and 13 CNMR spectroscopy, Mass Spectrometry (MS), Atomic absorption spectrometry (AAS), and Scanning Electron Microscopy (SEM). The surface area of the obtained nanoparticle NiO material was measured by the Brunauer-Emmett-Teller (BET) method. The thermal decomposition products NiO nanoparticles were investigated with XRD, and SEM technics. SEM investigations showed that due to the very little solubility of the prepared two complexes and consequently they were precipitated in the form of nanoparticles. In addition, it observed that this very insoluble complexes are converted to NiO nanoparticles a result of thermal decomposition.
Synthesis and Characterization of NiO Nanoparticles by Thermal Decomposition Method
Nickel oxide (NiO) nanoparticles were prepared by Thermal Decomposition method. Thermal decomposition or thermolysis is a chemical decomposition caused by heat. Thermal decomposition was thoroughly studied in order to control the particles size of the as-prepared NiO Nano powders. Transition metal oxides and metals have been researched extensively due to their interesting catalytic, electronic and magnetic properties. It has more applications like electro chromic coatings, plastics, textiles, nanowires, Nano fibers and specific alloy and catalyst applications. It is also used in active optical filters, ceramic structure, p-type transparent conductive films and energy efficient smart windows. The synthesized nickel oxide (NiO) nanoparticles were subjects to various studies like X-ray diffraction (XRD) technique and Fourier Transfer Infrared spectroscopy (FTIR).
In this paper, nickel oxide (NiO) nanoparticles have been prepared by solid state thermal decomposition of an acyclic nickel(II) complex (1,2-bis(2-formyl-3-methoxyphenyl)propane)nickel(II) chloride, [NiL]Cl 2 , in an electrical furnace at optimal temperature, 450 ºC for 3.5 h. The nickel(II) complex is obtained via solid state synthesis using nickel(II) chloride and tetradentate O 4 acyclic ligand 1,2-bis(2-formyl-3-methoxyphenyl)propane. The structure and morphology of NiO nanoparticles are characterized by Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD and TEM analysis show that NiO nanoparticles have pure and cubic phase with the average size of 5-10 nm.
Iranian Journal of Chemistry & Chemical Engineering-international English Edition, 2017
A new tetradentate N2O2 Schiff base ligand (MeO-bph)2bn = N,N¢-bis(2-hydroxy-4-methoxybenzophenone)-1,4-butanediamine was prepared from the condensation of butane-1,4-diamine with 4-methoxy-2-hydroxybenzophenone and characterized by 1H-NMR spectroscopy and single-crystal X-ray diffraction. Its nickel(II) and copper(II) complexes characterized using elemental analyses (CHN) and IR spectroscopy. Thermogravimetric analysis of the Schiff base ligand and its Ni(II) and Cu(II) complexes revealed their thermal stability and decomposition pattern. Finally, the complexes were used for the preparation of NiO and CuO nanoparticles by solid-state thermal decomposition. The nanoparticles were characterized by FT-IR, XRD, and SEM. FT-IR and XRD confirmed the purity of the formed products NiO and CuO.
Journal of Molecular Structure
The Nickel (II) Schiff base complex of NiL2, (L = 2-[(E)-[2-chloroethyl) iminoimethylphenolate) have been synthesized and characterized by elemental (CHN) analysis, UV vis and FT-IR spectroscopy. The molecular structure of [NiL2] was determined by single crystal X-ray diffraction technique. The Schiff base ligand HL acts as a chelating ligand and coordinates via one nitrogen atom and one oxygen atom to the metal center. The nickel (II) center is coordinated by two nitrogen and two oxygen atoms from two Schiff base ligands in an approximately square planar trans-1MN202] coordination geometry. Thermogravimetric analysis of NiL2 showed that it decomposed in three stages. In addition, complex NiL2 thermally decomposed in air at 660 C and the XRD pattern of the obtained solid showed the formation of NiO nanoparticles with an average size of 43 nm. In addition, the conformational analysis and molecular structures of NiL2 were investigated by means of density functional theory (DFT) calcul...
Synthesis and Characterization of Nickel Oxide Nanoparticles from Ni(salen) as Precursor
Journal of Cluster Science, 2013
Nickel oxide nanoparticles have been synthesized by thermal treatment of N,N 0 -(bis(salicylidene)-ethylene-1,2-diamine)Nickel(II); [Ni(salen)]; as precursor which has been synthesized via two methods: [Ni(salen)] were obtained by solid state reaction in absence solvent and co-precipitation reaction in presence of propanol as solvent, respectively. Nickel oxide nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy.
Facile synthesis of Ni/NiO nanocomposites via thermal decomposition
2018
In this study, Ni/NiO nanocomposites were prepared using simple, environment-friendly and low-cost solid-state thermal decomposition method from nickel (II) Schiff base complex at 400 and 500°C for 3 hours. The Ni/NiO nanocomposites were characterized with Fourier transformed infra-red spectroscopy (FT-IR), X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and X-Ray fluorescence (XRF). Results of XRD and XRF confirmed that the nanocomposite products contain a mixture of nickel and nickel oxide. The Ni or NiO content varied with the temperature used for the synthesis. Upon increasing the temperature from 400 to 500°C, the amount of NiO was found to be increased due to a complete oxidation of Ni to NiO. The TEM images demonstrated that the composites were spherical with a distribution size of about 10-30 nm. In addition, the products displayed reasonable electrochemical performance.