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Search results for: chemical%20engineering

  • Tables of Physical and Chemical Constants

    Open Research Data
    restricted access

    File contains short tables of physical and chemical constants that might be of use during the physics laboratory classes run in the Institute of Naval Architecture and Ocean Engineering.

  • Chemical composition of V2O5 nanorods

    Open Research Data
    open access - series: Vanadium oxides

    The DataSet contains the chemical compositions of the V2O5 nanorods on a silicon substrate. The thin films were obtained by the sol-gel method.  The information about sol synthesis is described in the Journal of Nanomaterials. The As-prepared thin films were annealed at 600C under a synthetic air atmosphere.

  • Imaging and chemical investigation of silver coating

    Open Research Data
    open access - series: Scanning Probe Microscopies data

    The recovery of silver from materials such as plates, still used in clinical radiography [1], or scrap jewelery is still very popular. The subject of the research, part of which was microscopic imaging, was to recreate the behavior of an electrochemically deposited silver coating. The copper electrodes were covered with a layer of silver obtained from...

  • Depth chemical profile in a CeIr3 sample

    Open Research Data
    open access

    The polycrystalline sample of CeIr3 used in the present studies was synthesized by arc-melting cerium (4N) and iridium (3N5) in an arc furnace on a water-cooled copper hearth using a tungsten electrode under a high purity argon atmosphere. A piece of zirconium was used as an oxygen getter. First, a button of Ir was prepared by arc-melting the iridium...

  • Chemical composition analysis of the LSNO ceramics

    Open Research Data
    open access

    The chemical composition of a series of La-Sb-Nb-O ceramics manufactured by the solid-phase reaction method was analyzed. The samples with a various antimony content were measured by XPS method (OmicronNanotechnology UHV system). Analysis confirmed presence of elements: La, Sb, Nb.

  • Chemical analysis of the Au-Ag nanoaloys

    Open Research Data
    open access

    The nanostructures of AuAg nanoalloys were prepared by sequential sputtering of gold and silver thin films.  Single layer thickness was usually 2.8 nm were deosted by magnetron sputtering method in a Ar plasma. As deposited layers were annealed in Ar atmosphere at 550 degress for 15 minutes. For XPS measurements five samples were selected: pure gold...

  • Measurements of the chemical composition of LTO:Cu powders

    Open Research Data
    open access

    Lithium titanate doped by copper was measured by X-ray photoemission spectroscopy (XPS). For sol-gel synthesis lithium acetate dehydrate and titanium (IV) butoxide 97% and copper (II) nitrate from Alfa Aesar were used as a reagents. Cu precursor was added in the proper weight to get an x index equal 0, 0.1 and 0.2. In the first step lithium acetate...

  • The chemical and mechanical pressure influence on chromium luminescence

    Open Research Data
    open access

    In this study, we aim to compare the changes in the luminescence properties of Ga2O3:Cr3+ modified by Al or Sc ion substitution (chemical pressure) and hydrostatic pressure. We find the same behavior for Ga2–xAlxO3:Cr3+ and different behavior for Ga2–xScxO3:Cr3+ in terms of the optical properties under chemical and mechanical pressure. We consider Al...

  • Analysis of the chemical composition of MnO-B2O3 glass

    Open Research Data
    open access

    Structural and thermal properties of xMnO−(100−x)B2O3 (where x = 40, 50 and 60 mol%) glass samples have been investigated with the employment of various techniques. Fourier transform infrared spectroscopy results revealed the influence of MnO on glass matrix. Decrease of B–O bond-related band intensities has been observed. MnO addition was found to...

  • Chemical investigation of the Al2O3 ultra-thin films

    Open Research Data
    open access

    Ultra-thin layers of oluminum oxide (Al2O3) were deposited by ALD method.  Atomic layer deposition provides precise thickness control down to a single atomic layer. The precursors used were trimethylaluminum (Sigma-Aldrich) and purified water. The deposition of the atomic layer was carried out at 200 °C. Samples with a thickness of 2 and 8 nm of alumina...

  • Chemical properties of bismuth telluride – carbon composites.

    Open Research Data
    open access

    Carbon nanotubes and amorphous carbon have been introduced into bismuth telluride matrix (in 0.15 and 0.30 wt % ratio) in order to investigate influence of carbon on composite’s thermoelectric properties. Composites with well-dispersed additives have been obtained by sonication and ball-milling. Chemical composition of materials was confirmed by XPS...

  • Depth profile of the chemical composition of the Au-Ag multilayers

    Open Research Data
    open access

    Silver and gold multilayers were deposited on a silicon substrate by magnetron sputtering method. Both type, Au and Ag thin films had 2 nm of thickness. Totally structure had thickness of 6 nm (Au-Ag-Au). That prepared multilayers were measured by XPS method. To obtain a depth profile of chemical composition, an Argon ion (Ar+) gun was used for etching...

  • Polymers doped by Ca or P. Chemical composition investigations

    Open Research Data
    open access

    The calcium and phosphorus doped polyurethane polymers (PU) were analyzed by XPS method. A series of samples with various content of Ca and P dopand - from 0% up to 21%) were selected for measutements. The chemical composition and valence state of elements were measurements using OmicronNatechnology UHV system wih  Argus hemispherical photoelectron...

  • Influence of the annealing condictions on the chemical structure of LaBaGdCo ceramics

    Open Research Data
    open access

    Ceramic samples based on Barium, Lanthanum, Gadolinium and Cobaltium were produced by solid state reaction.  After sintring in a furnance, samples were annealed at 300 Celsius degree in wet and dry atmosphere. Annealing takes 72h or 2h. Results of annealing were observed by X-Ray photoemission spectroscopy (XPS), OmicronNanotechnology.  XPS analysis...

  • Chemical investigations of the MoO3 doped by K films deposited FTO

    Open Research Data
    open access

    MoO3 thin films were synthesized via thermal annealing of thin, metallic Mo films deposited onto the FTO substrate using a magnetron sputtering system. The influence of photointercalation of alkali metal cation (K+) into the MoO3 structure on the photoelectrochemical properties of the molybdenum trioxide films was investigated. The chemical characterisation...

  • The results of physico – chemical monitoring of watercourses around the municipality of Gdańsk in 2016

    Open Research Data
    open access

    The dataset contains the results of a physico-chemical study of watercourses waters within the administrative boundaries of Gdańsk city in 2016. The examined material consisted of water samples collected from 16 watercourses (5 rivers, 6 streams, 2 storm water sewers, 1 artificial canal, 1 artificial arm of a river and 1 drainage trench) flowing directly...

  • Graphene oxide thin films deposited on a PCB board - chemical analysis

    Open Research Data
    open access

    Graphene oxides based films were measured by  X-ray photoemission spectroscopy (XPS) method. TheXPS measurements were carried out with the Omicron NanoTechnology UHV equipment. The hemispherical spectrophotometer was equipped with a 128-channel collector. The XPS measurements were performed at room temperature at a pressure below 1.1 × 10−8 mBar. The...

  • Bio-based polyester polyols for polyurethane foams - chemical structure of reference sample

    Open Research Data
    open access - series: struktura chemiczna bio-polioli

    Presented dataset includes the results of FTIR and H NMR spectroscopy of bio-based polyester polyol - poly(propylene succinate) (reference sample for materials obtained during MINIATURA 4 project realization).

  • bio-based polyester polyols - chemical structure of Miniatura 4 proper samples

    Open Research Data
    open access - series: struktura chemiczna bio-polioli

    Presented results are related with project MINIATURA 4 realization. At the document, the chemical structure of bio-based polyester polyols (poly(propylene-co-propan-1,2,3-triol succinate)s) are presented as analysis of FTIR and H NMR spectroscopy.

  • The results of physico – chemical and microbiological testing of watercourses around the municipality of Gdańsk in 2009

    Open Research Data
    open access

    The dataset contains the results of a bacteriological and physico-chemical study of watercourses waters within the administrative boundaries of Gdańsk city in 2009. The examined material consisted of water samples collected from 16 watercourses within the administrative boundaries of Gdańsk, Poland.