Search results for: AG-PT/TIO2

• The effect of nanoparticles size on photocatalytic and antimicrobial properties of Ag-Pt/TiO2 photocatalysts

  Publication

  • A. Zielińska-Jurek
  • Z. Wei
  • I. Wysocka
  • P. Szweda
  • E. Kowalska

  - APPLIED SURFACE SCIENCE - Year 2015

  Ag-Pt-modified TiO2 nanocomposites were synthesized using the sol–gel method. Bimetallic modified TiO2 nanoparticles exhibited improved photocatalytic activity under visible-light irradiation, better than monometallic Ag/TiO2 and Pt/TiO2 nanoparticles (NPs). All modified powders showed localized surface plasmon resonance (LSPR) in visible region. The photocatalysts’ characteristics by X-ray diffractometry (XRD), scanning transmission...

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• Ag/Pt-modified TiO2 nanoparticles for toluene photooxidation in the gas phase

  Publication

  • A. Zielińska-Jurek
  • A. Zaleska-Medynska

  - CATALYSIS TODAY - Year 2014

  Ag/Pt-modified TiO2nanocomposites were synthesized using the sol–gel method. The effect of metal typeand amount as well as synthesis route on the photocatalytic activity in reaction of toluene removal, usedas a model volatile organic compound, was investigated. Toluene, at the concentration of about 200 ppm,was irradiated over modified TiO2using light-emitting diodes (LEDs, max= 415 nm). The results showedthat toluene could be...

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• The effect of Ag, Au, Pt, and Pd on the surface properties, photocatalytic activity and toxicity of multicomponent TiO2-based nanomaterials

  Publication

  • A. Malankowska
  • A. Mikołajczyk
  • J. Mędrzycka
  • I. Wysocka
  • G. Nowaczyk
  • M. Jarek
  • T. Puzyn
  • E. Mulkiewicz

  - Environmental Science-Nano - Year 2020

  Multicomponent TiO2-based nanomaterials (MC-NMs) show better physicochemical properties than their individual components or bulk materials. However, the same unique properties that offer innovative applications might also pose unknown risks to human health and the environment. In this context, TiO2- based nanomaterials with a mixture of noble metal precursors (Ag, Au, Pt, and Pd) for large-scale technological applications in air...

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• Zastosowanie metod spektroskopowych do charakterystyki nanokompozytów Ag-TiO2

  Publication

  • A. Zielińska
  • A. Zaleska-Medynska
  • I. Chabowska
  • M. Gazda
  • E. Kowalska
  • J. Hupka

  - Year 2008

  Nanocząstki Ag-TiO2 zawierające od 1,5 do 8% mol. srebra otrzymano poprzez hydrolizę tetraizopropylo tytanianu w mikroemulsji woda-AOT-cykloheksan, zawierającej w fazie wewnętrznej prekursor cząstek srebra i następnie redukcję jonów srebra. Charakterystyka otrzymanych fotokatalizatorów Ag-TiO2 obejmowała, wyznaczenie właściwości absorpcyjnych, energii pasma wzbronionego (Eg), powierzchni właściwej BET, badanie aktywności fotokatalitycznej...

• Evaluation of the Antibacterial Activity of Ag- and Au-Nanoparticles Loaded TiO2 Nanotubes

  Publication

  • K. Arkusz
  • E. Paradowska
  • M. Nycz
  • J. Mazurek-Popczyk
  • K. Baldy-Chudzik

  - Journal of Biomedical Nanotechnology - Year 2020

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• Characterization of TiO2 Modified with Bimetallic Ag/Au Nanoparticles Obtained in Microemulsion System

  Publication

  • A. Gołąbiewska
  • A. Zielińska-Jurek
  • A. Zaleska-Medynska

  - JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES - Year 2012

  Fotokatalizatory TiO2 modyfikowane nanocząstkami bimetalicznymi Ag/Au przygotowano metodą mikroemulsyjną w układzie woda/surfaktant/cykloheksan. Aktywność fotokatalityczna próbek Ag/Au-TiO2 oszacowano przez wyznaczenie stopnia degradacji fenolu pod wpływem światła VIS. Fenol został użyty jako model zanieczyszczeń, ponieważ jest substancją niebezpieczną dla środowiska. Najwyższą aktywność w zakresie światła widzialnego wykazała...

• Study of the influence of the matrix characteristics over the photocatalytic ozonation of parabens using Ag-TiO2

  Publication

  • J. Gomes
  • A. Lopes
  • M. Gmurek
  • R. Quinta-Ferreira
  • R. Martins

  - SCIENCE OF THE TOTAL ENVIRONMENT - Year 2019

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• Preparation and characterization of Pt–N/TiO2 photocatalysts and their efficiency in degradation of recalcitrant chemicals

  Publication

  • A. Zielińska-Jurek
  • I. Wysocka
  • M. Janczarek
  • W. Stampor
  • J. Hupka

  - SEPARATION AND PURIFICATION TECHNOLOGY - Year 2015

  Series of Pt–N/TiO2 photocatalysts were synthesized using the sol–gel method. The photocatalysts’ characteristics by X-ray diffractometry (XRD), scanning transmission electron microscopy (STEM), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) showed that sample with the molar ratio Ti:N equal 1:4 and platinum nanoparticles size of about 3 nm had anatase structure, about 94 m2/g specific surface area...

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• Size-Controlled Synthesis of Pt Particles on TiO2 Surface: Physicochemical Characteristic and Photocatalytic Activity

  Publication

  • A. Zielińska-Jurek
  • Z. Wei
  • M. Janczarek
  • I. Wysocka
  • K. Ewa

  - Catalysts - Year 2019

  Different TiO2 photocatalysts, i.e., commercial samples (ST‐01 and P25 with minority of rutile phase), nanotubes, well‐crystallized faceted particles of decahedral shape and mesoporous spheres, were used as supports for deposition of Pt nanoparticles (NPs). Size‐controlled Pt NPs embedded in TiO2 were successfully prepared by microemulsion and wet‐impregnation methods. Obtained photocatalysts were characterized using XRD, TEM,...

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• Apatite-coated Ag/AgBr/TiO2 nanocomposites: Insights into the antimicrobial mechanism in the dark and under visible-light irradiation

  Publication

  • N. Mohaghegh
  • M. Endo-Kimura
  • K. Wang
  • Z. Wei
  • A. Hassani
  • F. Zehtabi
  • N. Hosseinzadeh
  • S. Sharma
  • A. B. Markowska-Szczupak
  • E. Kowalska

  - Applied Surface Science - Year 2023

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