Relevant bibliographies by topics / Nickel(II) oxide

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Nickel(II) oxide'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Nickel(II) oxide"

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Young, Jay A. "Nickel(II) Oxide." Journal of Chemical Education 82, no. 6 (June 2005): 831. http://dx.doi.org/10.1021/ed082p831.

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Cochran, SJ, and FP Larkins. "An X-Ray Photoelectron Study of Doped and Supported Nickel Oxide." Australian Journal of Chemistry 38, no. 9 (1985): 1293. http://dx.doi.org/10.1071/ch9851293.

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The surfaces of lithium-and chromium-doped nickel oxide and of nickel oxide supported on alumina have been examined by X-ray photoelectron spectroscopy. The concentration of the nickel(III) species increased for the lithium-doped oxide and decreased for the chromium-doped oxide relative to the undoped oxide. The effects of doping were manifested most clearly however by the amount of oxygen-containing species adsorbed on the oxide surface rather than by variations in the nickel(III) peak intensity. Lithium-doped oxides were also shown to reduce more readily than undoped or chromium-doped oxides in the presence of carbon-containing impurities. The rate of reduction is influenced by the activation energy for electron transport which is related to the availability of the nickel(III) species. Supported oxides showed significant surface enhancement of nickel(II) as well as an absence of the nickel(III) species. The nickel(II) species in the supported oxide was not easily reduced to nickel(0).
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Pourroy, G., J. L. Guille, and P. Poix. "Reactivity of metal oxides copper(I) oxide, manganese(II) oxide, cobalt(II) oxide, nickel(II) oxide, copper(II) oxide and zinc oxide with indialite." Chemistry of Materials 2, no. 2 (March 1990): 101–5. http://dx.doi.org/10.1021/cm00008a007.

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Moreno-Fuquen, Rodolfo, Olga Cifuentes, Jaime Valderrama Naranjo, Luis Manuel Serratto, and Alan R. Kennedy. "Dichlorobis(triphenylphosphine oxide-κO)nickel(II)." Acta Crystallographica Section E Structure Reports Online 60, no. 12 (November 20, 2004): m1861—m1862. http://dx.doi.org/10.1107/s1600536804029125.

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Sharma, S. K., F. J. Vastola, and P. L. Walker. "Reduction of nickel oxide by carbon: II. Interaction between nickel oxide and natural graphite." Carbon 35, no. 4 (1997): 529–33. http://dx.doi.org/10.1016/s0008-6223(97)83727-x.

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SAWATARI, Katsuhiko. "Differential determination of nickel (II) oxide and nickel (III) oxide in airborne particulate substances." INDUSTRIAL HEALTH 26, no. 2 (1988): 115–23. http://dx.doi.org/10.2486/indhealth.26.115.

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Sathiyaraj, Ethiraj, Govindasamy Gurumoorthy, and Subbiah Thirumaran. "Nickel(ii) dithiocarbamate complexes containing the pyrrole moiety for sensing anions and synthesis of nickel sulfide and nickel oxide nanoparticles." New Journal of Chemistry 39, no. 7 (2015): 5336–49. http://dx.doi.org/10.1039/c4nj02250e.

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Rare anagostic interaction is observed in (N-(pyrrol-2-ylmethyl)-N-furfuryldithiocarbamato-S,S′)(thiocyanato-N)(triphenylphosphine)nickel(ii). Bis(N-(pyrrol-2-ylmethyl)-N-furfuryldithiocarbamato-S,S′)nickel(ii) is used for the preparation of spherical nickel sulfide and nickel oxide nanoparticles.
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Markov, L., and K. Petrov. "Nickel-cobalt oxide spinels prepared by thermal decomposition of nickel(II)-cobalt(II) hydroxide nitrates." Reactivity of Solids 1, no. 4 (August 1986): 319–27. http://dx.doi.org/10.1016/0168-7336(86)80024-9.

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Liang-Gui, Wang. "Bis(2-pyridinecarboxylatoN-oxide-κ2O,O′)nickel(II)." Acta Crystallographica Section E Structure Reports Online 63, no. 12 (November 28, 2007): m3168. http://dx.doi.org/10.1107/s1600536807059958.

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Pretorius, Eugene B., and Arnulf Muan. "Activity of Nickel(II) Oxide in Silicate Melts." Journal of the American Ceramic Society 75, no. 6 (June 1992): 1490–96. http://dx.doi.org/10.1111/j.1151-2916.1992.tb04215.x.

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Dissertations / Theses on the topic "Nickel(II) oxide"

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Sialvi, Muhammad Z. "Enhanced electrochromic performance of nickel oxide-based ceramic precursor films." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12779.

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An electrochromic (EC) material is able to change colour under the influence of an electric potential. The development of energy efficient smart windows for architectural applications is at present the subject of intense research for both economic and environmental reasons. Thus there is now a considerable research effort to develop smart windows with natural colour switching properties, i.e. shades of grey. In this regard, a promising metal oxide with a brown-black anodic colouring state is NiO or hydrated nickel oxide (also called nickel hydroxide , Ni(OH)2). The present work outlines the preparation and optimisation of EC nickel oxide-based ceramic precursor films onto various conducting substrates towards smart window applications. The literature review chapter outlines the different methods used for generating ceramic materials, a review of electrochromism and history of nickel oxide-based EC materials are also provided. Thins films have been deposited by an electrochemical cathodic deposition and by aerosol assisted chemical vapour deposition (AACVD) technique. For hydrated NiO films prepared by electrochemical cathodic deposition, various deposition factors at small-scale area (30 x 7 mm) have been investigated in order to optimise the films properties towards EC applications. With deposition on fluorine-doped tin oxide (SnO2:F, FTO) on glass, use of nickel nitrate (0.01 mol dm-3) solution at an applied current of -0.2 mA (-0.1 mA cm-2) for 800 s was optimal for preparing uniform deposits with a porous interconnecting flake-like structure, which is generally regarded as favourable for the intercalation/deintercalation of hydroxide ions during redox cycling. The as-deposited hydrated NiO films showed excellent transmittance modulation (Δ%T = 83.2 at 432 nm), with average colouration efficiency (CE) of 29.6 cm2 C-1 and low response times. However, after 50 voltammetric cycles, the cycle life was found to fade by 17.2% from charge measurements, and 28.8 % from in-situ transmittance spectra measurements. In an attempt to prepare films with improved durability, AACVD has been used for the first time in the preparation of thin-film EC nickel(II) oxide (NiO). The as-deposited films were confirmed to be cubic NiO from analysis of powder X-ray diffraction data, with an optical band gap that decreased from 3.61 to 3.48 eV with an increase in film thickness (in the range 330 820 nm). The EC properties of the films were investigated as a function of film thickness, following 50, 100 and 500 conditioning oxidative voltammetric cycles in aqueous KOH (0.1 mol dm-3). Light modulation of the films increased with the number of conditioning cycles. EC response times were < 10 s and generally longer for the colouration than the bleaching process. The films showed excellent stability when tested for up to 10000 colour/bleach cycles. Using a calculation method based on the integration of experimental spectral power distributions derived from in-situ visible region spectra over the CIE 1931 colour-matching functions, the colour stimuli of the NiO-based films, and the changes that take place on reversibly switching between the bleached and coloured forms have been calculated. Films prepared by both deposition techniques gave positive a* and b* values to produce orange. However, in combination with low L* values, the films were perceived as brown-grey. Hydrated NiO prepared via electrochemical cathodic deposition suffers from two well-known limitations; firstly, it shows catalytic properties towards the oxygen evolution reaction (OER), which is a process very close to the Ni(II)/Ni(III) redox process. Secondly, hydrated NiO shows poor cycling durability in alkaline solution. The co-deposition of single or bimetallic additives is an effective way to overcome these problems. Electrochemical studies revealed that the combination of cobalt (10%) with lanthanum (5%) was found to be the optimal composition for preparing hydrated NiO films with improved film durability. Finally, the emphasis of this work was on scale-up of deposition. Therefore, optimised deposition conditions from small scale (3.0 x 0.7 cm) have been used to successfully deposit films on two different sized large-area (10 x 7.5 and 30 x 30 cm) conducting substrates.
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Ferretti, Eleonora. "Reductive Activation of Nitric Oxide and Nitrosobenzene at a Dinickel(II) Dihydride Complex and New Pyrazole-Based Diiron Compounds." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E594-D.

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SANTOS, José Ribamar Nascimento dos. "COMPLEXO NÍQUEL(II)-BIS(1,10-FENANTROLINA) SUPORTADO EM ÓXIDO DE GRAFENO REDUZIDO PARA A ELETRO-OXIDAÇÃO DE ETANOL." Universidade Federal do Maranhão, 2017. https://tedebc.ufma.br/jspui/handle/tede/tede/1993.

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Submitted by Maria Aparecida (cidazen@gmail.com) on 2017-11-16T13:16:54Z No. of bitstreams: 1 JOSÉ RIBAMAR NASCIMENTO DOS SANTOS.pdf: 1283725 bytes, checksum: 4c5d6eba4cec82d8cb883aa89b0a81f6 (MD5)
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The electro-oxidation of ethanol was evaluated on a pyrolytic graphite electrode (PGE) chemically modified with the nickel(II)-bis(1,10-phenanthroline) complex (Ni(II)(Phen)2) supported on reduced graphene oxide (RGO) (rGO/Ni(II)(Phen)2/PGE). The Ni(II)(Phen)2 complex, reduced graphene oxide (rGO) and the rGO/Ni(II)(Phen)2 composite were prepared and characterized by the techniques of Spectroscopy in the UV-Vis, Fourier Transform Infrared Spectroscopy and Diffraction of X-rays. The electrocatalytic activity of the material was evaluated by cyclic voltammetry and chronoamperometry. In alkaline solution, the voltamograms obtained for rGO/Ni(II)(Phen)2/PGE showed the formation of well defined redox peaks associated with the Ni(II)/Ni(III) redox couple. The results showed that the RGO/Ni(II)(Phen)2 composite significantly increases the electrocatalytic activity for ethanol oxidation compared to the electrode modified only with the Ni(II)(Phen)2 complex. Using the Laviron theory, the charge transfer rate constant (ks) and the electron transfer coefficient (α) of the electrode reaction were calculated to be 0.56 s-1 and 0.61, respectively. A investigation of the electro-oxidation of ethanol was performed by evaluating the effect of different parameters such as potential scan rate, OH- concentration and alcohol concentration. The chronoamperometric experiments were used to determine the diffusion coefficient of ethanol (D = 4.7 Χ 10-6 cm2 s-1) and the catalytic rate constant (kcat = 1.26 Χ 107 cm3 mol-1 s-1). The results obtained in this study clearly indicate the viability of rGO/Ni(II)(Phen)2/PGE as an electrocatalyst for ethanol oxidation.
A eletro-oxidação do etanol foi avaliada em um eletrodo de grafite pirolítico (PGE) quimicamente modificado com o complexo de níquel(II)-bis(1,10-fenantrolina) (Ni(II)(Phen)2) suportado em óxido de grafeno reduzido (rGO) (rGO/Ni(II)(Phen)2/PGE). O complexo Ni(II)(Phen)2, o óxido de grafeno reduzido (rGO), e o compósito rGO/Ni(II)(Phen)2 foram preparados e caracterizados pelas técnicas de Espectroscopia na região do UV-Vis, Espectroscopia de Infravermelho com Transformada de Fourier e Difração de Raios X. A atividade eletrocatalítica do material foi avaliada por voltametria cíclica e cronoamperometria. Em solução alcalina, os voltamogramas obtidos para rGO/Ni(II)(Phen)2/PGE mostraram processos redox bem definidos associados ao par redox Ni(II)/Ni(III). Os resultados mostraram que o compósito rGO/Ni(II)(Phen)2 aumenta significativamente a atividade eletrocatalítica para a oxidação do etanol em comparação com o eletrodo modificado apenas com o complexo Ni(II)(Phen)2 adsorvido na superfície do eletrodo. Usando a teoria de Laviron, a constante de velocidade de transferência de carga (ks) e o coeficiente de transferência de elétrons (α) da reação do eletrodo foram calculados sendo 0,56 s-1 e 0,61, respectivamente. Uma investigação da eletro-oxidação do etanol foi realizada avaliando o efeito de diferentes parâmetros, como a velocidade de varredura do potencial, a concentração de OH- e a concentração de álcool. Os experimentos cronoamperométricos foram utilizados para determinar o coeficiente de difusão do etanol (D = 4,7 Χ 10-6 cm2 s-1) e a constante de velocidade catalítica (kcat = 1,26 Χ 107 cm3 mol-1 s-1). Os resultados obtidos neste estudo indicam, claramente, a viabilidade do rGO/Ni(II)(Phen)2/PGE como eletrocatalisador da oxidação de etanol.
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Smith, Thomas. "Studies of p-type semiconductor photoelectrodes for tandem solar cells." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14522.

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Photoelectrodes and photovoltaic devices have been prepared via multiple thin film deposition methods. Aerosol assisted chemical vapour deposition (AACVD), electrodeposition (ED), chemical bath deposition (CBD) and doctor blade technique (DB) have been used to deposit binary and ternary metal oxide films on FTO glass substrates. The prepared thin films were characterised by a combination of SEM (Scanning Electron Microscopy), powder X-ray diffraction, mechanical strength tests and photochemical measurements. Nickel oxide (NiO) thin films prepared by AACVD were determined to have good mechanical strength . with a photocurrent of 7.6 μA cm-2 at 0 V and an onset potential of about 0.10 V. This contrasted with the dark current density of 0.3 μA cm-2 at 0 V. These NiO samples have very high porosity with crystalline columns evidenced by SEM. In comparison with the AACVD methodology, NiO films prepared using a combination of ED and DB show good mechanical strength but a higher photocurrent of 24 μA cm-2 at 0 V and an onset potential of about 0.10 V with a significantly greater dark current density of 7 μA cm-2 at 0 V. The characteristic features shown in the SEM are smaller pores compared to the AACVD method. Copper (II) oxide (CuO) and copper (I) oxide (Cu2O) films were fabricated by AACVD by varying the annealing temperature between 100-325°C in air using a fixed annealing time of 30 min. It was shown by photocurrent density (J-V) measurements that CuO produced at 325 °C was most stable and provided the highest photocurrent of 173 μA cm-2 at 0 V with an onset potential of about 0.23 V. The alignment of zinc oxide (ZnO) nano-rods and nano-tubes fabricated by CBD have been shown to be strongly affected by the seed layer on the FTO substrate. SEM images showed that AACVD provided the best seed layer for aligning the growth of the nano-rods perpendicular to the surface. Nano-rods were successfully altered into nano-tubes using a potassium chloride bath etching method. NiO prepared by both AACVD and the combined ED/DB method were sensitized to absorb more of the solar spectrum using AACVD to deposit CuO over the NiO. A large increase in the photocurrent was observed for the p-type photoelectrode. These p-type photoelectrode showed a photocurrent density of approximately 100 μA cm-2 at 0 V and an onset potential of 0.3 V. This photocathode was then used as a base to produce a solid state p-type solar cell. For the construction of the solid state solar cells several n-type semiconductors were used, these were ZnO, WO3 and BiVO4. WO3 and BiVO4 were successfully produced with BiVO4 proving to be the optimum choice. This cell was then studied more in depth and optimised by controlling the thickness of each layer and annealing temperatures. The best solid state solar cell produced had a Jsc of 0.541 μA cm-2 (541 nA) and a Voc of 0.14 V, TX146 made up of NiO 20 min, CuFe2O4 50 min, CuO 10 min, BiVO4 27 min, using AACVD and then annealed for 30 min at 600°C.
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Goldcamp, Michael Joseph. "Development of nickel(II) complexes of oxime containing ligands for the activation of dioxygen." Cincinnati, Ohio : University of Cincinnati, 2002. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1028824928.

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GOLDCAMP, MICHAEL JOSEPH. "DEVELOPMENT OF NICKEL (II) COMPLEXES OF OXIME CONTAINING LIGANDS FOR THE ACTIVATION OF DIOXYGEN." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1028824928.

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Vollmering, Ingo. "Oxime als Basis von Metallomesogenen mit quadratisch planarer Komplexgeometrie am Nickel(II)-Koordinationszentrum Synthesen und Eigenschaften /." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=961621966.

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Buch, Arnaud. "Etude thermodynamique et cinétique de l'extraction liquide-liquide du Nickel(II) par la 2-Ethylhexanal Oxime et un mélange de 2-Ethylhexanal Oxime et d'acide Di-2-(Ethylhexyl) phosphorique." Paris 6, 2001. https://tel.archives-ouvertes.fr/tel-00011562.

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Jones, Rebecca M. "Uniting experiment and theory the development and application of theoretical molecular models to nickel(II) tris(oxime)amine complexes /." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1084753268.

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JONES, REBECCA MARIE. "UNITING EXPERIMENT AND THEORY: THE DEVELOPMENT AND APPLICATION OF THEORETICAL MOLECULAR MODELS TO NICKEL(II)TRIS(OXIME)AMINE COMPLEXES." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1084753268.

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Books on the topic "Nickel(II) oxide"

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Bode, H. Study of nickel hydroxide electrodes II oxidation products of nickel (II) hydroxides. Washington, DC: National Aeronautics and Space Administration, 1986.

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Book chapters on the topic "Nickel(II) oxide"

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of bis(trialkylphosphine)oxide complex of nickel(II)." In Magnetic Properties of Paramagnetic Compounds, 1366. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_732.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) chloride adduct with 2-(2-pyridyl)-4, 4, 5, 5-tetramethyl-4, 5-dihydro-1H-imidazolyl-1-oxy-3-oxide." In Magnetic Properties of Paramagnetic Compounds, 1285–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_690.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) hexafluoroacetylacetonate complex with 2-(2-pyridyl)-4, 4, 5, 5-tetramethyl-4, 5-dihydro-1H-imidazolyl-1-oxy-3-oxide." In Magnetic Properties of Paramagnetic Compounds, 1288–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53971-2_691.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) chelate with 2-hydroxylbenzophenone oxime." In Magnetic Properties of Paramagnetic Compounds, 91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_47.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) chelate with 2-hydroxyl-methylaceto-phenone oxime." In Magnetic Properties of Paramagnetic Compounds, 90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_46.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of nickel(II) complex with 2-hydroxyacetophenone- oxime-thiourea-trioxane resin." In Magnetic Properties of Paramagnetic Compounds, 448. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_259.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of hetrodinuclear nickel(II)-copper(II) mixed ligand complex with half unit of vicinal oxime-imine and acetic acid." In Magnetic Properties of Paramagnetic Compounds, 600–601. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_377.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand nickel(II) complex with half unit of vicinal oxime-imine and chloride." In Magnetic Properties of Paramagnetic Compounds, 552–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_347.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand nickel(II) complex with half unit of vicinal oxime-imine and acetic acid." In Magnetic Properties of Paramagnetic Compounds, 541–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_341.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand nickel(II) complex with half unit of vicimal oxime-imine and monochloroethanoic acid." In Magnetic Properties of Paramagnetic Compounds, 543–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54234-7_342.

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Conference papers on the topic "Nickel(II) oxide"

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Yanagida, Shozo, and Takeko Matsumura. "Quantum chemistry molecular modeling for radio-frequency and microwave- frequency thermo-upconversion heating of metal oxides of NiO and Fe2O3." In Ampere 2019. Valencia: Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.10234.

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Under irradiance of 1kW-MW, nickel oxide (Ni(II)O, 25 gr)) can heat up to 1,300°C in 6 min, while ferric oxide (Fe(III)2O3, 25gr) up to 88°C in 30 min. Since Ni(II) and Fe(III) have unpaired electron (spin) of respective 2 and 5, the big difference in the MW heating speed must be explained by thermo-upconversion mechanism as recently verified for quick MW heating of water clusters.1) MW heating power by magnetic loss factor of magnetic metal oxides with unpaired electron, i.e., spin dcould not rationalize such heating-speed and temperature difference. Density functional theory-based molecular modeling(DFT/MM, B3LYP, 6-31G*) of NiO-tetramer of [(NiO)2]2 is successfully carried out with negative heat of formation, giving effective absorption in both FIR and IR regions, which verifies that Ni(II)O should be heated up through thermo-upconversion to the IR region via radio-, MW- and FIR-absorption, i.e., FIR/IR absorption and thermal IR dissipation
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Tawancy, H. M., and Luai M. Al-Hadhrami. "Role of Platinum in Thermal Barrier Coatings Used in Gas Turbine Blade Applications." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59153.

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Current technology of thermal barrier coating systems used in gas turbine blade applications relies upon the use of a metallic bond coat, which has a two-fold function: i) it develops a thin layer of aluminum oxide enhancing the adhesion of the ceramic top coat, and ii) it provides an additional resistance to oxidation. It was the objective of this study to develop an understanding of the role of platinum in bond coats of the diffusion-type deposited on a nickel-base superalloy. Two Pt-containing bond coats were included in the study: i) a platinum-aluminide and ii) a bond coat formed by interdiffusion between an electroplated layer of platinum and the superalloy substrate. In both cases, the top ceramic coat was yttria-stabilized zirconia. For reference purposes, a simple aluminide bond coat free of Pt was also included in the study. Thermal exposure tests at 1150 °C with a 24-hour cycling period to room temperature were used to compare the coating performance. Microstructural features were characterized by various electron-optical techniques. Experimental results indicated that Pt acts as a “cleanser” of the oxide-bond coat interface by decelerating the kinetics of interdiffusion between the bond coat and superalloy substrate. This was found to promote selective oxidation of Al resulting in a purer Al2O3 scale of a slower growth rate increasing its effectiveness as “glue” holding the ceramic top coat to the underlying metallic substrate. However, the exact effect of Pt was found to be a function of the state of its presence within the outermost coating layer. Of the two bond coats studied, a surface layer of Pt-rich gamma prime phase (L12 superlattice) was found to provide longer coating life in comparison with a mixture of PtAl2 and beta phase. This could be related to the effectiveness of gamma prime phase as a sink for titanium minimizing its detrimental effect on the adherence of aluminum oxide.
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Proust, Antoine, Michael Guillodo, Miche`le Pijolat, and Krzysztof Wolski. "Determination of Oxidation and Metallic Cations Release Kinetics on Nickel Base Alloys in PWR: Description of the On-Line Measurement Techniques." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48704.

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A common issue in Nuclear Power Plants (NPP) is the release of corrosion products from the steam generator tubes in primary circuit which gives rise, after their neutronic activation, to a residual activity very problematic during chemistry transients. The objectives of this work are not to solve directly this problem but rather to improve the understanding of this phenomenon by determining experimentally the kinetics of oxidation and metallic cations release of nickel base alloys. These results will contribute to progress in the building of a physical mechanism. The specificity of the test facility is (i) the on-line measurements of cation release rate by a highly sensitive analytical device and (ii) the in-situ measurement of oxidation rate by Diffuse Reflectance Spectroscopy (DRS). The primary water chemistry is controlled by means of a circulating micro-loop in titanium to avoid any interference with the test samples. A specific test vena is connected between the titanium micro-loop and the analytical device for on-line measurements. Metallic cation release from SG tube-samples is deduced from the measurement of nickel and iron concentrations in upstream the test vena by use of differential polarography and ICP-AES techniques. The precision on the determination of Ni and Fe concentrations is assumed to be a few tens of ppt. Oxidation or corrosion measurements are performed off-line by optical diffuse reflectance measurements specifically developed in this framework. The corrosion sample is mounted in a High Temperature and Pressure (HT-HP) spectroscopic flow-through cell connected to the test vena and fed with the primary chemistry from the titanium micro-loop. Analysis of reflection spectra provides the thickness of oxide layer. A set of parameters such as (i) temperature, (ii) hydrogen content and (iii) metallurgical surface state in nominal primary chemistry for test durations of 1500–2000 hours is planned to be investigated in the frame of metallic cation release and oxidation kinetics measurements of Ni base alloys. The aim of this paper is focused on the presentation of the online technique specifically developed in the French Technical Centre of AREVA NP to determine the metallic cation release and oxidation kinetic of Ni base alloys in primary water chemistry. First results of cation release and oxidation rate are given for shorter duration test.
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Reports on the topic "Nickel(II) oxide"

1

SE Ziemniak and MA Goyette. Nickel (II) Oxide Solubility and Phase Stability in High Temperature Aqueous Solutions. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/837463.

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2

S.E. Ziemniak and M.A. Goyette. Nickel(II) Oxide Solubility and Phase Stability in High Temperature Aqueous Solutions. Office of Scientific and Technical Information (OSTI), March 2003. http://dx.doi.org/10.2172/821370.

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3

Scholz, Florian. Sedimentary fluxes of trace metals, radioisotopes and greenhouse gases in the southwestern Baltic Sea Cruise No. AL543, 23.08.2020 – 28.08.2020, Kiel – Kiel - SEDITRACE. GEOMAR Helmholtz Centre for Ocean Research Kiel, November 2020. http://dx.doi.org/10.3289/cr_al543.

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R/V Alkor Cruise AL543 was planned as a six-day cruise with a program of water column and sediment sampling in Kiel Bight and the western Baltic Sea. Due to restrictions related to the Covid-19 pandemic, the original plan had to be changed and the cruise was realized as six oneday cruises with sampling in Kiel Bight exclusively. The first day was dedicated to water column and sediment sampling for radionuclide analyses at Boknis Eck and Mittelgrund in Eckernförde Bay. On the remaining five days, water column, bottom water, sediment and pore water samples were collected at eleven stations covering different types of seafloor environment (grain size, redox conditions) in western Kiel Bight. The data and samples obtained on cruise AL543 will be used to investigate (i) the sedimentary cycling of bio-essential metals (e.g., nickel, zinc, and their isotopes) as a function of variable redox conditions, (ii) the impact of submarine groundwater discharge and diffusive benthic fluxes on the distribution of radium and radon as well as greenhouse gases (methane and nitrous oxide) in the water column, and (iii) to characterize and quantify the impact of coastal erosion on sedimentary iron, phosphorus and rare earth element cycling in Kiel Bight.
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