نتایج جستجو برای: ni p c
تعداد نتایج: 2184242 فیلتر نتایج به سال:
To improve the electromagnetic characteristics of conductive nano fillers, carbon nanofibers (CNFs) with nickel-phosphorous (Ni-P) and nickeliron (Ni-Fe) have been fabricated by the electroless plating process. Observations by the electron microscopy (SEM/TEM) and element analyzer (EDS/ELLS) showed the uniform Ni-P and Ni-Fe coated CNFs. The compositions of the plating layers were about Ni-6wt%...
The crystal structure of the title compound, [Ni(C(6)H(6)N(4)S(2))(H(2)O)(4)][Ni(C(7)H(3)NO(4))(2)]·3H(2)O, consists of Ni(II) complex cations, Ni(II) complex anions and lattice water mol-ecules. The Ni(II) ions in both the complex cation and anion assume a distorted octa-hedral coordination geometry. O-H⋯O, N-H⋯O and C-H⋯S hydrogen bonds occur in the crystal structure.
Water and soil pollution with heavy metals has become a worldwide environmental issue. Therefore, development of efficient and low-cost methods for removal of metals from water or metal stabilization in soil has been identified as priority research areas. Biochar, produced from plant biomass and agricultural wastes, has recently been used to remove heavy metals from aqueous solutions as an...
We have demonstrated an extremely facile procedure for the preparation of 1D porous Ni@C nanostructures by pyrolysis of Ni-based coordination polymer nanorods. The highly aligned Ni-based polymer nanorods were prepared using nitrilotriacetic acid (NTA) as a chelating agent by a one-step solvothermal approach. The obtained precursors are demonstrated to have a well-designed 1D nanostructure and ...
The nature of surface complexes formed on Ni uptake onto montmorillonite (a dioctahedral smectite) has been investigated over an extended time period by polarized extended X-ray absorption fine structure (P-EXAFS) spectroscopy. Self-supporting films of Ni-sorbed montmorillonite were prepared by contacting Ni and montmorillonite at pH 7.2, high ionic strength (0.3 M NaClO4), and low Ni concentra...
Two new end-to-end (EE) cyanate bridged 1D coordination polymers of Ni(II) are isolated which contain linear (180°) Ni-N-C and Ni-O-C angles in Ni-NCO-Ni bridges and show ferromagnetic (F) coupling in agreement with the reported theoretical model for linear EE bridges.
is called a covering system if every integer satisfies at least one of the congruences (1) . An old conjecture of P . Erdös states that for every integer a there is a covering system with n l = c. Selfridge and others settled this question for c < 8 . The general case is still unsettled and seems difficult . A system (1) is called disjoint if every integer satisfies at most one of the congruenc...
Au-Ge alloys are promising materials for high-power and high-frequency packaging, and Ni is frequently used as diffusion barriers. This study investigates interfacial reactions in Au-12Ge/Ni joints at 300 °C and 400 °C. For the reactions at 300 °C, typical interfacial morphology was observed and the diffusion path was (Au) + (Ge)/NiGe/Ni5Ge3/Ni. However, an interesting phenomenon--the formation...
The deprotonated Schiff base ligand in the title compound, [Ni(C(8)H(8)N(3)O(2)S)(C(18)H(15)P)]Cl, functions as an N,O,S-chelating anion to the phosphine-coordinated Ni atom, which exists in a distorted square-planar geometry. The hy-droxy group forms an intra-molecular O-H⋯O hydrogen bond. The two amino groups of the cation are hydrogen-bond donors to the chloride anion; the hydrogen bonds gen...
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