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Search results for: SILVER, GOLD, TIO2

  • Plasmon resonance in gold-silver nanoalloys

    Open Research Data
    open access

    Surface plasmon resonance (SPR) can lead to improve or formation a new linear or nonlinear optical phenomena. Especially it can enhance a light emission from luminescence materials. The presence of metal nanostructures or nanoparticles is necessary to excitation of the SPR. It is well known that gold and silver nanostructures exhibit plasmon resonance...

  • Depth profile of the gold-silver bimetallic structures

    Open Research Data
    open access

    Silver and gold bimetallic layers were deposited on a silicon substrate by magnetron sputtering method. Both, Au and Ag layers had 3 nm of thickness. That prepared nanostructures were measured by XPS method. To obtain a depth profile of chemical composition, an Argon ion (Ar+) gun was used for etching surface of sample. Each cycle of etching takes 30...

  • Dewetting of silver films detected by XPS method

    Open Research Data
    open access

    Dewetting of silver thin films was detected by XPS method. Thin metallic films were deposited by magnetron sputtering method. Formation of nanostructures , as a result of thermal annealing, was confirmed by SEM microscope. For comparision three samples were measured. Bulg gold, as-deposited silver film with thickness of 3 nm and nanostructures.

  • X-Ray diffraction of the metallic nanostructures

    Open Research Data
    open access

    Metallic nanostructures (gold and silver) were manufactured as a thermal annealing of gold or silver thin film. Gold films with thickness of 2.8 nm were deposited on a silicon substrates using a table-top dc magnetron sputtering coater (EM SCD 500, Leica), equipped with quartz microbalance for in-situ thickness measurements. Films were deposited from...

  • Plasmon resonance in a TiO2-Au NPs structures

    Open Research Data
    open access

    Investigated structures were deposited on a pre cleaned Corning 1737 glass substrates, which provided flat optical transmission characteristics and high transmission coefficient in a visible light range. Plasmonic nanostructures were formed as a result of thermal annealing. For gold films with thickness of 2.8 nm depiction a table-top dc magnetron sputtering...

  • Electrical measurements of the dewetting of metal thin films

    Open Research Data
    open access

    In situ observations of dewetting of thin films is very complicated. One of the method, that helps to observe it, could be electrical measurements. For experiments, thin gold, silver and gold-silver nanoalloy films were deposited by magnetron sputtering method. Films were deposited on a Corning glass substrates. Samples were measured by four point method...

  • TEM imaging of metal nanoparticle cross section

    Open Research Data
    open access

    TEM microscope was used for a imaging of metallic nanostructures. Metallic nanostructures were manufactured by thermal annealing of thin films. Gold and silver nanostructures were chosen for measurements. Samples were annealed for 15 and 60 minutes at 550 deg.

  • Interface diffusion between metallic nanoparticles and silicon substrate

    Open Research Data
    open access

    Interface diffusion between metallic nanoparticles and silicon substrate was detected by EDX method. Metallic nanostructures were manufactured by thermal annealing of thin films. Gold and silver nanostructures were chosen for measurements. Samples were annealed for 15 and 60 minutes at 550 deg.

  • 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...

  • 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...

  • Linear impedance of vanadate glasses containing BaTiO3

    Open Research Data
    open access

    The linear impedance of vanadate glasses doped with BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated (573...

  • Linear impedance of vanadate glass-ceramics containing BaTiO3

    Open Research Data
    open access

    The linear impedance of vanadate glass-ceramics containing BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated...

  • Linear impedance of 35P2O5-30Fe2O3-20Nb2O5-15TiO2

    Open Research Data
    open access

    The electrical properties of phosphate-iron glasses containing niobium and titanium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-20Nb2O5-15TiO2 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG) and TiO2...

  • Linear impedance of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2

    Open Research Data
    open access

    The electrical properties of phosphate-iron glasses containing niobium and titanium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG) and...

  • Linear impedance of 35P2O5-30Fe2O3-35Nb2O5

    Open Research Data
    open access

    The electrical properties of phosphate-iron glasses containing niobium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-35Nb2O5 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG) and TiO2 (≥99.9%, anatase...

  • High temperature linear impedance of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2

    Open Research Data
    open access

    The high temperature electrical properties of phosphate-iron glasses containing niobium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG)...

  • High temperature linear impedance of 35P2O5-30Fe2O3-25Nb2O5-15TiO2

    Open Research Data
    open access

    The high temperature electrical properties of phosphate-iron glasses containing niobium and titanium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-20Nb2O5-15TiO2 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%,...

  • High temperature linear impedance of 35P2O5-30Fe2O3-35Nb2O5

    Open Research Data
    open access

    The high temperature electrical properties of phosphate-iron glasses containing niobium were investigated. Glass samples of the composition of 35P2O5-30Fe2O3-35Nb2O5 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG) and TiO2...

  • Nonlinear impedance of vanadate glasses containing BaTiO3

    Open Research Data
    open access

    The nonlinear impedance of vanadate glasses doped with BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated (573...

  • GSADF test results for national art market (G-7 group) + selected investments

    Open Research Data
    embargo

    The dataset contains data illustrating the results of detecting and data-stamping price explosivity periods in national art markets in G-7 countries with additional investments from a second group (MSCI, S&P 500, crude oil, gold and silver). The files contain:•    01_diagnostics_gsadf – summary of results for analysed time series.•    02_st_value...

  • Nonlinear impedance of vanadate glass-ceramics containing BaTiO3

    Open Research Data
    open access

    The nonlinear impedance of vanadate glasses doped with BaTiO3 was measured. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on a preheated (573...

  • Nonlinear high temperature impedance of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2 glass

    Open Research Data
    open access

    The nonlinear high temperature impedance of iron- phosphate glasses doped with niobium oxide was measured.  Glass samples of the composition of 35P2O5-30Fe2O3-27.5Nb2O5-7.5TiO2 (in %mol) were prepared by the conventional melt quenching technique. Appropriate amounts of reagents ((NH4)2HPO4 (≥99.9%, POCH), Fe2O3 (≥99.9%, POCH), Nb2O5 (≥99.9%, PLUKA AG)...

  • SEM - Expanded polystyrene coated by TiO2 or SiO2-TiO2

    Open Research Data
    open access

    Data contain SEM images taken in SEM Hitachi SU8000 with voltage of 5.0 kV. SEM images show expanded plystyrene spheres coated by a thin layer of TiO2 or bilayer SiO2-TiO2. 

  • Photoluminescence spectra of TiO2

    Open Research Data
    open access

    These data contain photoluminescence spectra of TiO2 measured at the temperature of liquid nitrogen. There is a comparison of the photoluminescence spectra of TiO2 heat treated at 400-600oC in the ambient (Ar) and reduced (H2) atmospheres. These emission spectra were recorded after TiO2 excitation with a wavelength of 290 nm

  • XRD-TiO2 and SiO2

    Open Research Data
    open access

    Data contain results from XRD measurements of amorphous silica and TiO2 of antase and rutile phases. The commercial TiO2 named as P25 produced by Evonik was also analyzed.

  • TiO2-TG analyses -OH groups

    Open Research Data
    open access

    TG analyses of TiO2 were performed under nitrogen flow to monitor desorption of hydroxyl groups. Physisorbed weak-bonded hydroxyl groups were desorbed totally at around 120oC, whereas chemisorbed ones at around 500oC. The mass loss at these temperatures was used as concentration of hydroxyl groups on TiO2 surface. The amount of analysed TiO2 was 10...

  • Morphology of the gold nanoislands

    Open Research Data
    open access

    Dewetting of the thin metallic films leads to formation of an isolated islands. morphology of nanostructures was measured by SEM microscope. Thin gold films with a thickness of 1.2 nm, 1.5 nm and 3.4 nm were anealed at 550, 600 and 650 Celcius degress.

  • TiO2-zeta potential

    Open Research Data
    open access

    Data contain results from the measurements of zeta potential of TiO2 versus pH. Data are saved as original files and in the format of Excel file. measurements were perfomed in Zetasizer Nano ZS with using Multi-Purpose Titrator MPT-2. 

  • Analyses of sulphur in TiO2 by XRFS

    Open Research Data
    open access

    Data contain content of sulphur in TiO2 determined by X-ray fluorescence spectroscopy. The results were obtained by using internal pattern.

  • Photocatalytic decomposition of acetaldehyde over TiO2 (titanium dioxide) supported on nickel foam and Ni-doped (nickel-doped) TiO2

    Open Research Data
    open access

    This dataset contains chromatograms recorded during the decomposition of acetaldehyde in a high-temperature reaction chamber under UV irradiation using as photocatalytic systems  TiO2 (titanium dioxide) supported on nickel foam, TiO2 supported on oxidized nickel foam and TiO2 doped by metallic nickel (Ni) powder. The detailed equipment and measurement...

  • TiO2-potential zeta in water

    Open Research Data
    open access

    Data contain results from measurements of zeta potential for powdered TiO2 in a diluted aqueous solution. The measurements were performed in Zetasizer Nano ZS analyser.

  • Photocatalytic decomposition of ethylene on the TiO2-polystyrene spheres

    Open Research Data
    open access

    Data contain results from the measurements of the photocatalytic decomposition of ethylene under UV irradiation with using TiO2 coating on the expanded polystyrene spheres (EPS). EPS-SiO2-TiO2 and EPS-TiO2 were used as the photocatalytic beds in the fluidized bed reactor.  Both, stationary and fluidized beds were tested. The comparison of ethylene decomposition...

  • Formation of gold nanostructures detected by XPS method

    Open Research Data
    open access

    Gold nanostructers were manufactured by thermal dewetting of thin film. Film with thickness of 2.8 nm was deposited by magnetron sputtering method. As a result of annealing at 550 deg, nanostructures appear. Bulk gold, as-deposited gold film and metallic nanostructures were measured by XPS method. 

  • XPS-TiO2 heated in H2

    Open Research Data
    open access

    These XPS spectra were recorded for TiO2 heat-treated at 450-600oC in H2. Surface oxygen groups were determined. Deconvolution of Ti 2p peak allowed to determine Ti3+ on the titania surface.

  • TG analyses - content of SiO2 and TiO2 in polystyrene

    Open Research Data
    open access

    TG analyses were performed for polystyrene spheres coating by SiO2 and then coating by SiO2-TiO2. Thermal analyses of polystyrene spheres only were also performed. The content of inorganic remaining was used for calculation the quantity of coating SiO2 and TiO2 in the polystyrene spheres.

  • Physicochemical and photocatalytic data of Cu-TiO2/Ti3C2 composites

    Open Research Data
    open access

    In this dataset, we include the data regarding the physicochemical properties (XRD, DR/UV-vis, photoluminescence, electrochemistry) and photocatalytic activity of TiO2/Ti3C2 and Cu-TiO2/Ti3C2 composites in the reaction of carbamazepine degradation. Herein we present the results for pure TiO2/Ti3C2 and composites modified with copper particles (0.25%,...

  • Oxidation of silver nanostructures

    Open Research Data
    open access

    Silver nanostructures were prepared on  Si substrate. Thin Ag films (2 and 6 nm thickness) were deposited using a tabletop dc magnetron sputtering coater (EM SCD 500, Leica) in pure Ar plasma. The Ag target was of 99.99% purity, the rate of layer deposition was about 0.4 nm·s−1 , and the incident power was in the range of 30–40 W. The layer thickness...

  • Ethylene decomposition on TiO2 under UV

    Open Research Data
    open access

    Data contain chromatograms recorded during decomposition of ethylene over TiO2 in a flow reactor under UV irradiation. Semilac UV lamp with total power of 72 W was used as a source of UV light. Chromatograms were recorded in Trace GC Ultra chromatograph equipped in FID detector. Sampling was realised via the dosing sample loop. TiO2 was coated on the...

  • SEM of TiO2 heated at 400-600oC in Ar or H2

    Open Research Data
    open access

    Data contain some SEM images of TiO2 taken after its heat treatment in Ar or H2 at 400-600oC. Treated TiO2 was crystalline anatase phase with 3-4 % of rutile nclei.

  • EPR of TiO2 hydrogenated at 500 and 600oC

    Open Research Data
    open access

    Data contain EPR spectra of TiO2 (anatase phase) heat treated in H2 at 500 and 600oC. Sample heated at 500oC contained 4 wt% of rutile and that at 600oC 8 wt% of rutile.

  • FTIR-TiO2 heated at 400-600oC in Ar or H2

    Open Research Data
    open access

    Data contain FTIR diffuse eflectance spectra of TiO2, which was heat-treated at 400-600oC in Ar or H2. Hydrogen reduced TiO2 revealed new bands due to the adsorption of some species on the titania oxygen vacancy sites.

  • XRD-TiO2 heat-treated at 400-600oC in Ar or H2

    Open Research Data
    open access

    These data contain XRD patterns of TiO2 heat-treated at 400-600oC in Ar or H2. Two pases of TiO2 were identified: anatase and rutile.

  • Ethylene decomposition on TiO2 - UV and Fluorescence lamp

    Open Research Data
    open access

    Data contain chromatograms recorded during decomposition of ethylene flowing over TiO2 through the quartz tubular shape reactor. TiO2 was coated onto glass plates with dimension of 2cmx2cm, in total 3 plates were used and placed inside reactor. Reactor was irradiated by UV (Special 'TL'E, Philips) or fluorescent (Lumilux, OSRAM) 3 ring-shaped lamps,...

  • TG-hydroxyl groups in TiO2-P25

    Open Research Data
    open access

    TG analyses were performed for powdered TiO2 - commercial P25 sample, which was heat-treated from room temperature to 500 C in the nitrogen atmosphere. Mass loss at lower temperature such as 120 C was related to the physisorbed water, and that one occurring at 500 C to the chemisorbed hydroxyl groups.

  • 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...

  • SEM inwestigation of the silver nanostructures

    Open Research Data
    open access

    Silver thin films with a thickness of 1nm, 3nm, 5nm, 7nm and 9nm were deposited by a table-top magnetron sputtering unit in a pure argon plasma from a high-purity silver target. Silicon wafers was used as a substrates. As-deposired films were annealed in Ar atmosphere at 550 Celsius degree for 15 minutes.As a result of annealing, Ag nanostructures formed...

  • Physicochemial data of the faceted anatase TiO2 nanoparticles

    Open Research Data
    open access

    Raw XRD, DR-UVvis and FTIR data of the faceted TiO2 nanoparticles, as extracted from the source files. Description of the basic measurements conditions and used quipment included in the file.

  • BET of TiO2 heated at 400-600 C degrees

    Open Research Data
    open access

    These data refer to the results of BET surface area of TiO2, which was treated firstly in autoclave at 150 C degrees for 1h (sample marked as A150), then was further heat treated in Ar or H2 at 400-600 C degrees. As a raw material TiO2 was used, which was a semiproduct from the industrial production of titania white by sulphur method. The raw material...

  • Gold nanocubic structures functionalization with organic layers

    Open Research Data
    restricted access - series: Electrochemical Au-Minecraft: a new approach towards the impedimetric biosensing system

    This dataset contains the XPS spectra obtained for gold nanocubes (AuNC), which were deposited at the gold electrode surface and dried. The AuNC's were first functionalized with either cysteamine in EtOH or mercaptopropionic acid in EtOH. The concentration of these compounds was 20 mM. The interaction of the functionalized with the AuNC surface was...

  • XPS studies of PDA-modified TiO2 nanotubes

    Open Research Data
    open access

    This dataset contains the XPS results (survey and high-resolution spectra) of the samples from TiO2 nanotubes modified with polydopamine. The studies were presented as a part of the research on "Band Gap Engineering toward Semimetallic Character of Quinone-Rich Polydopamine" (DOI: 10.1021/acs.jpcc.2c08804).