A series of composites containing nanoparticles NiO (from 1 to 10% by weight per Ni), deposited on NORIT charcoal, was prepared the decomposition Ni0 complex Ni(cod)2 (cod = cis,cis-1,5-cyclooctadiene). Ni content in set loading appropriate quantities precursor. The catalytic activity associated with situ generation active sites due a reduction NiO, hence could be stored air without loss their ...

This report focuses on a novel strategy for the preparation of transition metal-MoS2 hybrid nanoclusters based on a one-step, dual-target magnetron sputtering, and gas condensation process demonstrated for Ni-MoS2. Aberration-corrected STEM images coupled with EDX analysis confirms the presence of Ni and MoS2 in the hybrid nanoclusters (average diameter = 5.0 nm, Mo:S ratio = 1:1.8 ± 0.1). The ...

Sodium chloride has been proved that it is an effective promoter for the reduction of high-magnesium, low-nickel oxide ore. The aim of current work is to clarify the promotion behavior of sodium chloride in the roasting reduction process. The influence of moisture on the reduction of ore in the presence of sodium chloride is studied to get clear comprehension of promotion process. In the presen...

We have previously shown that oxide semiconductors (TiO2, NiO, Cr2O3, etc.) exhibit remarkable catalytic effects when heated at high temperatures of about 350–500 C and that the effect has been interpreted in terms of the formation of a large number of highly oxidative holes caused by thermal excitation of semiconductors. This prompted us to utilize this technology for complete removal of volat...

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 solv...

The electronic spectrum, energy gap and local magnetic moment of paramagnetic NiO are computed using the local density approximation plus dynamical mean-field theory LDA DMFT . To this end the noninteracting Hamiltonian obtained within the LDA is expressed in Wannier function basis, with only the five antibonding bands with mainly Ni 3d character taken into account. Complementing it by local Co...

Nickel oxide (NiO) nanoflowers are synthesized via a one-pot method using an amphiphilic block copolymer in aqueous solution. Pluronics F-127 works as structure-directing agent the formation of NiO nanoflowers. The controlled hydrolysis precipitating slowly releases ammonia that can form Ni(OH)2, which is stabilized polymer calcination removes polymeric part nanocomposite and converts Ni(OH)2 i...

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 usin...

We use first-principles calculations to find that in infinite-layer nickelates $R$NiO$_2$, the widely studied tetragonal $P4/mmm$ structure is only dynamically stable for early lanthanide elements $R$ = La-Sm. For late Eu-Lu, an imaginary phonon frequency appears at $A=(\pi,\pi,\pi)$ point. those nickelates, condensation of this mode into leads a more energetically favorable $I4/mcm$ characteri...