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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 …
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On the other hand, the relatively high ratio of sulfur (a major pollutant) to nickel in most nickel concentrates increases the burden of sulfur containment in the smelters. Various …
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Nickel oxide can easily be prepared via several methods, including chemical route, evaporation,7 sputtering,15,16 chem-ical deposition,17–19 oxidation of nickel,20 sol–gel method21 and thermal decomposition.22 In particular, thermal decomposition method is a broad category for its powder preparation that
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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 …
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The implementation of protective layers on catalyst surfaces has emerged as a robust strategy to prevent direct electrolyte contact and mitigate catalyst dissolution. …
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High purity nickel (99.999% at) has been used as a starting material for both, the oxidation rate measurements of nickel metal, and for obtaining Ni 1−y O samples to determine deviation from stoichiometry and chemical diffusion in this oxide. The specimens in the form of rectangular plates (10×15 mm 2) with the thickness from 0.1 up to 1 mm …
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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 …
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Hydrodeoxygenation catalysts: A series of NiO x /SiO 2 catalysts that contain oxygen vacancies is prepared by a sol–gel and controllable temperature-programmed reduction method. Results show that NiO x /SiO 2 has a superior phenol hydrogenation activity in deoxygenation to Ni 2 P/SiO 2 even at 180 °C. The high hydrogenation activity …
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ABSTRACT. We describe herein a unique approach to fabricate the silica-coated nickel oxide a core-shell nanostructure by using a different concentration of surfactant and characterized in terms of shape, size, and phase structure by means of various standard spectroscopic techniques like powder X-ray diffraction (PXRD), …
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Nickel (Ni) is a trace element beneficial for plant growth and development and could improve crop yield by stimulating urea decomposition and nitrogen-fixing enzyme activity. ... NiO bulk (b … Nickel Oxide Nanoparticles Improve Soybean Yield and Enhance Nitrogen Assimilation Environ Sci Technol. 2023 May 16;57(19):7547-7558. doi: …
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The primary reason for this is the predominant use of nickel nitrate in NCM material production, which results in higher energy consumption during nickel extraction …
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The voltammetric features in these conditions have been attributed to the oxidation and reduction of nickel hydrides, 10,14–16 nickel oxides and nickel hydroxides. 17–23 In this work, we intend to present a clarified interpretation of the electrode processes on Ni in alkaline media that is supported by voltammetric, XRD and X-ray ...
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Morphology engineering is an attractive method for controlling the activity of metal and metal oxide catalysts. However, there have been only a few studies on nickel oxide regarding the shape control and observation of its catalytic properties. Here, we synthesized various morphologies of nickel oxide nanoparticles, namely octahedral ((111) facet …
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Nickel oxide nanoparticles can be manufactured by thermal decomposition of freshly prepared nickel hydroxife by sol gel route at 300°C (572°F). The nickel oxide nanoparticles created using this method can be characterized using x-ray diffractometer and vibrating sample magnetometer.
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Researchers have unveiled a promising lithium manganese oxide battery technology that hits a whopping 820 watt-hours per kilogram energy density without voltage decay, besting conventional lithium ...
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Activated vinylcyclopropanes can form zwitterionic π-allylmetal species in the presence of transition metals and are widely used in organic synthesis. A nickel-catalyzed asymmetric allylation of secondary phosphine oxides with vinylcyclopropanes was described. Tertiary phosphine oxide products could be obtained with up to 91% yield and 92% ee.
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ChemSpider record containing structure, synonyms, properties, vendors and database links for Nickel oxide, . Accessed: Mon, 26 Aug 2024 15:13:33 GMT. Simple; Structure; Advanced; This is the new ChemSpider site, some advanced search features are still to be released. ...
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The Ni 50 O 30 H 20 spectrum pre-annealing shows the three mixed phases: nickel, nickel oxide, and nickel hydroxide. After annealing, the nickel hydroxide phase is lost, leaving behind only nickel and nickel oxide. No new phases were observed. There was almost no annealing temperature effect on the diffraction scans.
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Nickel oxide (NiO) is a broad band gap antiferromagnetic p-type semiconductor 2. NiO nanoparticles are used in gas sensors 3, batteries 4, transparent conducting layers 5, solar thermal absorbers ...
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The synthesis of Nickel oxide nanoparticles (NiO NPs) is reported in this paper using Solanum trilobatum leaf ext. as the fuel and nickel nitrate as the precursor through hot plate combustion method. X-ray diffraction (XRD) studies exhibited a fcc. phase with high crytallinity and an av. crystallite size of 23.21 nm. A cylindrical and rod like ...
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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-effectiveness, abundance, and well-defined electrochemical properties. Recent studies have identified that mixing NiO with …
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Iron nickel oxide (Fe 2 O 3 /NiO) nanopowder is a class of nanomaterial with properties such as superior magnetic, electrical and selective absorption. It can be used as an …
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ChemSpider record containing structure, synonyms, properties, vendors and database links for Nickel(II) oxide, . Accessed: Mon, 26 Aug 2024 17:34:30 GMT. Simple; Structure; Advanced; This is the new ChemSpider site, some advanced search features are still to be released. ...
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Facile synthesis of three-dimensional graphene/nickel oxide nanoparticles composites for high performance supercapacitor electrodes. Chemical Engineering Journal, Volume 264, 2015, pp. 603-609.
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Nickel oxide (NiO) thin films were deposited onto glass substrates by the DC reactive magnetron sputtering technique. The as-deposited films were post-annealed in air at 450–500 °C for 5 h.The effect of annealing on the structural, microstructural, electrical and optical properties were studied by X-ray diffraction (XRD), atomic force microscope …
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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 …
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Both samples obtained by calcination depicted nickel oxide nanoparticles, and representative X-ray pattern is shown in Fig. 2.In both NiO1 and NiO2, the peak positions which appeared at 2θ values of 33.37, 43.05, 58.50, 72.15, and 76.13 are readily ascribed to (111), (200), (220), (311), and (222) crystal planes of NiO respectively …
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3.1 Structural studies. The structural analysis of electrodeposited Manganese and Nickel oxide on Nickel electrodes were studied with X-ray diffractometer by varying the diffraction angles 2θ from 10 to 95 in the Fig. 1.The peaks 44.69°, 52.14° and 76.74°can be indexed to the (111), (200) and (220) planes …
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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.
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