The entirely accidental observation of increased sintering performance of nickel-infiltrated yttria-stabilized zirconia (8YSZ) in a molybdenum and oxygen rich atmosphere was explored. Molybdenum and nickel were found to be synergistic sintering aids for 8YSZ. However, sintering had to take place in an atmosphere of flowing oxygen. …
General studies on sulfuric acid pressure leaching of nickel concentrates are characterized by the operating conditions of the pressure oxidation process and thus …
In this study, bismuth oxide/nickel oxide (Bi 2 O 3 /NiO)-based composite is supported over the nickel (Bi 2 O 3 /NiO-NF) and carbon nanotube fiber (Bi 2 O 3 /NiO-CNTF) to develop two different electrode systems for water-splitting studies.
The electrochemical behavior and catalytic properties of nickel oxide (NiOx) are enhanced through cathodic electroplating and subsequent electrochemical activation in an alkaline aqueous electrolyte. The electrochemical detection of ʟ-glutamate becomes feasible by introducing an amine group through immobilizing APTES ((3-aminopropyl ...
Metallic oxides are an interesting research area due to their intriguing physicochemical, electrical, magnetic and optical properties [].Hence, the metal oxide nanoparticles such as nickel oxide, iron oxide, zinc oxide, tin oxide, titanium oxide, and copper oxide have been recurrently synthesized because of their fascinating properties …
Typically, all of the nickel oxide and about 60 to 70% of the iron oxide are reduced, and the resulting product is ferronickel. Depending on ... The Direct Leaching of Nickel Sulfide …
Nickel concentrates typically are smelted and refined to produce Class 1 nickel products which can be used to manufacture metal salts. Alternatively, a process …
An in situ Raman spectroscopic investigation has been carried out to identify the composition of the active phase present on the surface of nickel electrodes used for the electrochemical evolution of oxygen. The electrolyte in all cases was 0.1 M KOH. A freshly polished Ni electrode oxidized upon immersion in the electrolyte and at potentials …
Nickel oxide nanoparticles (NiO NPs) were synthesized by a green method using nickel nitrate (Ni(NO 3) 2.6H 2 O) and sodium hydroxide (NaOH) in the presence of Acacia nilotica leaf extracts (aqueous and ethanolic). The nanostructures were characterized by X-ray diffraction (XRD) studies, Fourier-transformed infrared (FTIR) …
Nickel oxide (NiO) being a p- type semiconductor,has wide bandgap and is eco-friendly, low cost and stable material that can serve as promising material for a counter electrode in the DSSC (Dye-Sensitized Solar Cells). The use of capping agent is to control the size of nanoparticles and also prohibit the agglomeration of the synthesized material.
The deposition of iron-nickel oxides has already been reported few times for other applications involving highly concentrated nickel films (Ni > 83% atomic mass). …
Nickel oxide (NiO) has emerged as one of the most promising transition-metal oxides (TMOs) for electrochemical capacitors, batteries, catalysis, and electrochromic films, owing to its cost …
Nickel oxide (NiO) is a wide band gap semiconductor material that is used as an electrochromic layer or an ion storage layer in electrochromic devices. In this work, the effect of annealing temperature on sol-gel NiO films was investigated. Fourier transform infrared spectroscopy (FTIR) showed that the formation of NiO via decomposition of the …
Nickel oxide (CAS # ) was evaluated for repeated-dose toxicity in F344/N rats (5//group) administered daily whole-body exposures to target aerosol (MMAD 3.9 um) concentrations …
In this work, a low temperature chlorination roasting -water leaching process was proposed to extract metals from low-grade mixed oxide–sulfide nickel concentrate. …
A mechanism of corrosive interaction between periclase-chromite, periclase, and chromite refractories and molten copper (I) oxide and slag melts containing copper oxide and nickel oxide has been studied. The refractories in question are shown to be insufficiently resistant to slag attack typical of smelting technologies for converting nickel-containing copper …
Oxygen evolution catalysis in alkaline conditions over hard templated nickel-cobalt based spinel oxides. International Journal of Hydrogen Energy 2017, 42 (46), 27910-27918.
Although largely studied, contradictory results on nickel oxide (NiO) properties can be found in the literature. We herein propose a comprehensive study that aims at leveling contradictions related to NiO …
The mineralogical characterization and possible beneficiation strategies of a nickel sulfide concentrate from a Western Australian deposit were investigated to …
Nickel oxide nanotubes with great antibacterial activities, electrochemical capacitance, and magnetic properties have been synthesized through a precursor method with dimethylglyoxime as precipitant for the precursor, and the method has been developed for the synthesis of Ni/C nanorods.
Although used battery cathodes, the nickel oxides/hydroxides were incorporated with graphene materials to enhance the charge density and the power density of the hydrid supercapattery nanocomposites. The higher power density and energy density of the hydrid supercapattery nanocomposites bridges the gap between batteries and …
IGO Limited, an ASX listed nickel miner, has recently patented a process for production of high purity/battery grade nickel sulfate directly from nickel sulfide …
Do not put nickel carbonate powder directly into the tank 2-7 lbs (2.4-8.4 g/L) of nickel carbonate per 100 gallons of plating solution. 2. A better (in my opinion) method is to pack a filter with nickel oxide circulate the nickel bath through the filter until the pH reaches 5-5.2. It takes about 1.5-5.25 lbs of nickel oxide per 100 gallons of ...
Acetone is a tracer for monitoring air quality and a potential breath maker for diabetes. It remains a great challenge for current portable sensors to sensitively and selectively detect acetone at low-ppb (part per billion) level. Herein, we present an ordered mesoporous nickel oxide (NiO) with both large mesopores and ultrathin crystalline …
Nickel oxide is the principal oxide of nickel and is used in a number of key industrial applications, with several novel uses of nickel oxide developed over the past few years. However, as it is classed as a …
Sol–gel derived nickel oxide (NiO x) has been extensively investigated as the hole injection layer (HIL) for many optoelectronic devices because of its advantages of high environmental stability and low cost …
Iron nickel oxide nanopowder, <50 nm particle size (APS), ≥98% trace metals basis; CAS Number: 1; EC Number: 235-335-3; Synonyms: Diiron nickel tetraoxide; Linear Formula: Fe2NiO4; find Sigma-Aldrich-637149 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich
Abstract Semiconductor metal oxides have attracted wide attention in the area of gas sensor due to that they have unique advantages in the rapid and accurate detection of harmful gases. A simple strategy is to synthesize porous NiO hollow microspheres via a simple hydrothermal method with trisodium citrate as structure guide …
Nickel-rich layered transition-metal oxides with high reversible capacity are considered the most promising cathode candidates for next-generation LIBs. However, their applications are limited by an …
The present work focused on synthesizing and characterizing nickel oxide-Pluronic127-Escin hybrid nanomaterials (NiO-PF127-Escin HNMs) and evaluating their antibacterial and cytotoxic properties against cervical (HeLa) and liver cancer (Hep3B) cells. The NiO-PF127-Escin HNMs were synthesized using a chemical precipitation process. …
As it is considered impossible to eliminate every trace of nickel from products or verify 'free' status in the laboratory, some brands use highly purified iron oxides and/or lower levels of minerals in their formulations to ensure products fall at or below one part per million of bioavailable nickel — ie 1ppm (0.0001%), which is safe for ...
Here we demonstrate a highly porous three-dimensional nickel–cobalt oxide (NiCo 2 O 4) nanomaterial as a potential glucose oxidase (GOx) enzyme-mimicking catalyst for the electrochemical oxidation of glucose and lactic acid in alkaline medium.The as-synthesized NiCo 2 O 4 nanomaterial based anode exhibits an excellent catalytic …
We studied the reduction kinetics of bulk NiO crystals by hydrogen and the corresponding structural transformations in the temperature range of 543–1593 K. A new experimental approach allows us to arrest and quench the reaction at different stages with millisecond time resolution. Two distinctive temperature intervals are found where the …
Considering on the low grade of nickel and iron in laterite nickel ore, solid-state reduction roasting combined with magnetic separation to remove the magnesium …
Nickel-based electrodes undergo different phase transformations in different atmospheres and upon electrochemical operation. [32, 33] In our work, β-Ni(OH) 2 was the precursor material, characterized by a hexagonal unit-cell and a layered structure with one nickel, two oxygen atoms, and two hydrogen atoms per cell. [34] Upon deprotonation, …
ChemSpider record containing structure, synonyms, properties, vendors and database links for Nickel(II) oxide, Accessed: Tue, 03 Sep 2024 20:37:31 GMT Simple
Electron-beam-evaporated nickel oxide (NiOx) films are known for their high quality, precise control, and suitability for complex structures in perovskite (PVK) solar cells (PSCs). However, untreated NiOx films have inherent challenges, such as surface defects, relatively low intrinsic conductivity, and shallow valence band maximum, which seriously …
Nickel oxide (NiO) micro/nanoflowers were synthesized by hydrothermal treatment followed by calcination. The concentration of potassium persulfate (K 2 S 2 O 8) plays a significant role in the formation of the NiO micro/nanoflowers.The NiO film annealed at 300 °C for 1.5 h exhibits fast coloration/bleaching response (1.3 s for coloration and 3.2 s for …
We aim at elucidating the mechanism of the trimethyl aluminum (TMA) decomposition on oxidized nickel (NiO) and metallic nickel (Ni) facets in the absence of a source of hydroxyl groups. This TMA decomposition mechanism constitutes the earliest stage of growth of Al2O3 coatings with the atomic layer decomposi